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Kazuaki Hori

Section

Graduate School of Science

Job title

Professor

Degree

博士（理学）（東京大学）
修士（理学）（東京大学）

researchmap

https://researchmap.jp/read0156692

J-GLOBAL ID

201101087160820653

Research History 8

2021/04 - Present

Tohoku University　Graduate School of Science Department of Earth Science
2011/04 - 2021/03

Nagoya University　Graduate School of Environmental Studies Department of Social and Human Environment
2007/04 - 2011/03

Meijo University　Faculty of Science and Technology Department of Environmental Science and Technology
2003/10 - 2007/03

Meijo University　Faculty of Science and Technology Department of Environmental Science and Technology
2002/01/01 - 2003/09/30

科学技術振興事業団(日本学術振興会)科学技術特別研究員
2001/07/01 - 2001/12/31

社会福祉法人恩賜財団母子愛育会リサーチ・レジデント
2001/04/01 - 2001/09/24

Rissho University
1998/04/01 - 2001/03/31

日本学術振興会特別研究員（DC1）

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Education 2

The University of Tokyo　Graduate School, Division of Science

1998/04 - 2001/03
The University of Tokyo　Faculty of Science

1992/04/01 - 1996/03/28

Committee Memberships 13

東北地理学会　編集委員

2021/06 - Present
国土交通省国土政策局　土地履歴調査地区調査委員会委員

2020/08 - Present
日本第四紀学会　評議員

2019/08 - Present
日本地球惑星科学連合　地球人間圏科学セクションボード

2016/06 - Present
Editorial Board: Geomorphology (Elsevier)　Editorial Board

2004/01 - Present
日本地理学会　代議員

2018/03 - 2024/03
JpGU　Program Committee

2016/10 - 2023/05
国土交通省国土地理院　治水地形判定委員会委員

2009/11 - 2021/03
名古屋市　環境影響評価審査会委員

2018/11 - 2021/01
JpGU　Program Committee Chair

2018/06 - 2019/05
知立市史　調査執筆委員

2010/05 - 2018/03
国土交通省国土政策局　土地履歴調査地区調査委員会委員

2011/08 - 2013/03
日本第四紀学会　編集委員

2007/09 - 2011/08

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Professional Memberships 5

東北地理学会
American Geophysical Union
Japan Geoscience Union
日本第四紀学会
日本地理学会

Research Interests 7

drainage basin
海水準変動
sea-level change
Holocene
landform evolution
coastal lowland
floodplain

Research Areas 2

Humanities & social sciences / Geography /
Natural sciences / Human geoscience /

Awards 3

学術賞

2023/08　日本第四紀学会　完新世における沖積平野、特にデルタの地形発達と堆積システムの変化に関する第四紀学的研究
Geomorphology, Best Reviewer Award 2022

2023/04　Elsevier
日本地理学会賞（社会貢献部門）

2013/05　日本地理学会　東日本大震災発生直後に津波被災マップを作成し、災害対応に必要な重要な情報を社会に向けてすみやかに提供したことに対する社会貢献

Papers 59

Grain-size variability and formation process of lowstand river sediments in the Japanese Islands: A review and outlook

Susumu Tanabe, Taku Komatsubara, Kazuaki Hori

Earth-Science Reviews　243　2023/08

DOI： 10.1016/j.earscirev.2023.104504 　

ISSN： 0012-8252
Accumulation of thick fluvial sediments in the Shinano River incised-valley fills: implications for sequence stratigraphy and alluvial architecture

Kazuaki Hori, Susumu Tanabe, Atsushi Urabe

Journal of Sedimentary Research　93　(7)　453-468　2023/07

DOI： 10.2110/jsr.2022.049 　

ISSN： 1527-1404
Sedimentary characteristics and formation of riverine source bordering dunes in a humid region: an example from the lower reaches of Kiso River, central Japan

Kohei Ohata, Kazuaki Hori, Yuji Ishii, Toru Tamura

Geomorphology　426　2023/04

DOI： 10.1016/j.geomorph.2023.108602 　

ISSN： 0169-555X
濃尾平野臨海部における沖積層・熱田層の広域テフラ層序と派生した問題．

牧野内猛, 檀原徹, 堀和明, 野々垣徹

瑞浪市化石博物館研究報告　49　145-165　2022/11
Classification, Architecture, and Evolution of Large-River Deltas (2nd edition) Invited Peer-reviewed

Kazuaki Hori, Yoshiki Saito

Large Rivers: Geomorphology and Management. 2nd edition,　114-145　2022/04

DOI： 10.1002/9781119412632.ch6 　
Deltas

Kazuaki Hori

Treatise on Geomorphology　527-543　2022/01/01

DOI： 10.1016/B978-0-12-818234-5.00070-5 　
Quantitative analysis of land transformation in a Holocene delta: An example from the Tama River lowland, central Japan

Kodai Hasada, Kazuaki Hori

MARINE GEOLOGY　425　2020/07

DOI： 10.1016/j.margeo.2020.106193 　

ISSN： 0025-3227

eISSN： 1872-6151
Bathymetry and Bottom Sediments of Oxbow Lakes along the Lower Reaches of the Ishikari River

堀和明, 清水啓亮, 谷口知慎, 野木一輝

地理学評論　93　(3)　2020

ISSN： 1883-4388
Late Pleistocene to Holocene sedimentary sequence and landform of the Nobi Plain, central Japan

堀和明, 羽佐田紘大, 石井祐次, 石井祐次, 石井祐次, 高橋瑛人

地質学雑誌　125　(1)　2019

ISSN： 0016-7630
Differences in radiocarbon ages among molluscan shells, plant materials, and total organic carbon: An example from the paleo-Changjiang incised-valley fill, China

Kazuaki Hori, Yoshiki Saito

Quaternary International　455　45-55　2017/10/07
Publisher: Elsevier Ltd
DOI： 10.1016/j.quaint.2017.07.037 　

ISSN： 1040-6182
Latest pleistocene to holocene alluvial basin construction: An example from the Nara Basin, central Japan

Nobuaki Itoh, Kazuaki Hori, Masashi Takada

QUATERNARY INTERNATIONAL　455　102-112　2017/10

DOI： 10.1016/j.quaint.2017.06.016 　

ISSN： 1040-6182

eISSN： 1873-4553
Middle to late Holocene flood activity estimated from loss on ignition of peat in the Ishikari lowland, northern Japan Peer-reviewed

Yuji Ishii, Kazuaki Hori, Arata Momohara

GLOBAL AND PLANETARY CHANGE　153　1-15　2017/06

DOI： 10.1016/j.gloplacha.2017.04.004 　

ISSN： 0921-8181

eISSN： 1872-6364
Response of a coarse-grained, fluvial to coastal depositional system to glacioeustatic sea-level fluctuation since the Last Glacial Maximum: An example from the Tenryu River, Japan Peer-reviewed

Kazuaki Hori, Shigenobu Nagasawa, Yoshiki Sato, Toshimichi Nakanishi, Wan Hong

JOURNAL OF SEDIMENTARY RESEARCH　87　(2)　133-151　2017/02

DOI： 10.2110/jsr.2017.3 　

ISSN： 1527-1404

eISSN： 1938-3681
Middle to late-Holocene decreased fluvial aggradation and widespread peat initiation in the Ishikari lowland (northern Japan) Peer-reviewed

Yuji Ishii, Kazuaki Hori, Arata Momohara, Toshimichi Nakanishi, Wan Hong

THE HOLOCENE　26　(12)　1924-1938　2016/12

DOI： 10.1177/0959683616646189 　

ISSN： 0959-6836

eISSN： 1477-0911
利根川低地における「弥生の小海退」の検証 Peer-reviewed

田辺晋, 堀和明, 百原新, 中島礼

地質学雑誌　122　(4)　135-153　2016/04

DOI： 10.5575/geosoc.2016.0007 　
Formation and infilling of oxbow lakes in the Ishikari lowland, northern Japan Peer-reviewed

Yuji Ishii, Kazuaki Hori

QUATERNARY INTERNATIONAL　397　136-146　2016/03

DOI： 10.1016/j.quaint.2015.06.016 　

ISSN： 1040-6182

eISSN： 1873-4553
Carbon storage in a Holocene deltaic sequence: An example from the Nobi Plain, central Japan Peer-reviewed

Kodai Hasada, Kazuaki Hori

QUATERNARY INTERNATIONAL　397　194-207　2016/03

DOI： 10.1016/j.quaint.2015.08.010 　

ISSN： 1040-6182

eISSN： 1873-4553
電柱を指標とした津波挙動分析 Peer-reviewed

堀和明, 鈴木宗親, 前田一樹

地学雑誌　124　(2)　227-239　2015/04

DOI： 10.5026/jgeography.124.227 　
「弥生の小海退」の海水準低下レベルの測定

田邉晋, 堀和明

国土地理協会第１３回学術研究助成（平成２５年度）報告書　-　1-19　2015
Characteristics of Delta Front Deposits and Reexamination of Existing Boring Logs : An Example from the Nobi Plain, Central Japan Peer-reviewed

HORI Kazuaki, NONOGAKI Toru, MATSUBARA Kosuke, NAKASHIMA Rei, NAKANISHI Toshimichi, HONG Wan, MAKINOUCHI Takeshi

35　(3)　233-249-249　2014/07
Publisher:
ISSN： 0389-1755

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This paper discussed the characteristics of delta front deposits, especially lower part of them, based on the analysis of three borehole core sediments (NB, SW, and AP1 cores) obtained from the Nobi Plain, central Japan. Lower delta front deposits have the following features: (1) upward-coarsening succession and upward-decreasing mud content showing convex-upward trend, (2) small luminosity compared with the underlying prodelta deposits under the wet condition, and (3) increase in accumulation rates from the prodelta deposits with concave-upward trend, and large accumulation rates (more than 10 mm/yr). When we determine the timing of passage of delta front through a site with sufficient accuracy, it is possibly effective using the horizon with mud content of fifty percent (almost equivalent to the boundary of sand and mud) because the horizon is identified easily, found commonly in the almost same depth among borehole sites, and can be formed near the river mouth with a relatively short period. It is expected that research on Holocene coastal and fluvial depositional systems will further progress by applying the detailed analysis result of borehole core sediments to reexamination of a huge number of existing boring logs.
Changes in sedimentary environment and sedimentation rate of the IK1 core obtained from the inner part of Ishikari lowland, northern Japan Peer-reviewed

Ishii Yuji, Ito Ayana, Nakanishi Toshimichi, Hong Wan, Hori Kazuaki

The Quat. Res.　53　(3)　143-156-156　2014/06
Publisher: Japan Association for Quaternary Research
DOI： 10.4116/jaqua.53.143 　

ISSN： 0418-2642

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Sedimentary environment and sedimentation rate of the Ishikari floodplain were investigated by analyzing borehole core sediments. The sedimentary environment changed from meandering river channel to floodbasin before 10,000calBP, and sedimentation rate increased around 8,000 calBP in response to the landward shift of the depocenter caused by sea-level rise. Sedimentation rate decreased largely after approximately 7,500 calBP in response to the deceleration of sea-level rise. Between 7,500 and 5,000calBP, the sedimentary environment was mainly occupied by floodbasin. Relatively successive peat had accumulated for 3,500 years after 5,000calBP under sea-level standstill. The timing of the decrease in sedimentation rate in the meandering fluvial system nearly coincides with that of the initiation of bayhead delta progradation in the barrier-lagoon system located just downstream of the meandering fluvial system. It is important to note that the evolution of meandering fluvial systems as well as of delta systems is influenced by the rate of sea-level change.
Magnitude and duration of the Yayoi regression: Examination from the Alluvium in the Tonegawa Lowland, Kanto Plain, central Japan

Tanabe Susumu, Hori Kazuaki, Nakashima Rei

Annual Meeting of the Geological Society of Japan　2014　590　2014
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2014.0_590 　

ISSN： 1348-3935

eISSN： 2187-6665
空中写真の実体視判読に基づく2011年東北地方太平洋沖地震の津波浸水域認定の根拠 Peer-reviewed

杉戸信彦, 松多信尚, 後藤秀昭, 熊原康博, 堀和明, 廣内大助, 石黒聡士, 中田高, 海津正倫, 渡辺満久, 鈴木康弘

自然災害科学　31　(2)　113-125　2012/09
Floodplain evolution and ringed artificial levee formation in the northern Nobi Plain, central Japan Peer-reviewed

HORI Kazuaki, TANABE Susumu

The Quaternary Research (Daiyonki-Kenkyu)　51　(2)　93-102-102　2012/04
Publisher: Japan Association for Quaternary Research
DOI： 10.4116/jaqua.51.93 　

ISSN： 0418-2642

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Evolution and aggradation rates of floodplains on a centennial to millennial-scale were investigated by analyzing landform features and borehole core sediments. This study was performed at the floodplain along the former course of the Ibi River flowing through the Nobi Plain, central Japan, because the microtopography in the floodplain can be easily identified. The sedimentary environment changed from a delta to a floodplain after 3,200calBP, and a floodbasin environment continued for nearly 2,000 years. However, an avulsion of the Ibi River that happened approximately 400 years ago caused channel erosion at the point that became a river course and a rapid aggradation of natural levee deposits along the channel. Additionally, it was suggested that a part of the artificial ringed levee ("Wajyu" in Japanese) distributed along the channel originated from the natural levee which was formed in relation to the avulsion. Although the millennial-scale floodplain aggradation rate was about 3mm/yr, the aggradation rate shows a large variation depending on the sedimentary environment. The rate is estimated to be more than 10mm/yr on the natural levee and 1 to 2mm/yr in the floodbasin.
Crevasse-Splay Deposits of the Asuwa River Valley Plain Caused by the Fukui Heavy Rainfall Peer-reviewed

HORI Kazuaki, HIROUCHI Daisuke

Geographical review of Japan Series A　84　(4)　93-102-368　2011/07
Publisher:
DOI： 10.4157/grj.84.358 　

ISSN： 1883-4388
Sediment facies and Holocene deposition rate of near-coastal fluvial systems: An example from the Nobi Plain, Japan Peer-reviewed

Kazuaki Hori, Shogo Usami, Hiroki Ueda

JOURNAL OF ASIAN EARTH SCIENCES　41　(2)　195-203　2011/05

DOI： 10.1016/j.jseaes.2011.01.016 　

ISSN： 1367-9120
Glaciological Research Project in Patagonia 2006-2009 Studies at Glaciar Perito Moreno, Hielo Patagonico Sur, in area of Hielo Patagonico Norte, and along the Pacific Coast

安仁屋政武, SKVARCA Pedro, 杉山慎, 青木賢人, 松元高峰, 安間了, 内藤望, 榎本浩之, 堀和明, MARINSEK Sebastian, 紺屋恵子, 縫村隆行, 津滝俊, 刀根健太, BARCAZA Gonzalo

Bulletin of Glaciological Research (Web)　29　(29)　1-17　2011
Publisher: THE JAPANESE SOCIETY OF SNOW AND ICE
DOI： 10.5331/bgr.29.1 　

ISSN： 1345-3807
Sedimentary Facies and Accumulation Rates of Core Sediments Obtained from the Tenryu River Alluvial Fan(Regional Geomorphology) Peer-reviewed

NAGASAWA Shigenobu, HORI Kazuaki

Transactions,Japanese Geomorphological Union　30　(4)　305-316-316　2009/04
Publisher:
ISSN： 0389-1755

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A 50-m-long core (TR1 core) was collected from an alluvial fan at the lower reaches of Tenryu River, central Japan. TR1 core was divided into three units on the basis of sedimentary facies and physical properties. Unit 1, consisting of the alternation of pebble and pebbly sand, was considered to be fluvial sediment deposited before 9600 cal BP. Unit 2 (9600 to 7100 cal BP) consists of the alternation of sand and mud with rich organic matter. Electric conductivity and diatom species suggest that the deposition of the Unit 2 was occurred under the marine and estuarine environments. Unit 3, consisting of clast-supported gravel and organic-rich mud was formed under the fluvial environment after 7100 cal BP. Larger accumulation rate, approximately 12.4m/kyr, occurred in Unit 1 and Unit 2. After about 8000 cal BP, it decreases considerably by 2.5m/kyr. They should be related to the deceleration of the post-glacial eustatic sea-level rise.
Paleohydrological implications of late Quaternary fluvial deposits in and around archaeological sites in Syria Peer-reviewed

Takashi Oguchi, Kazuaki Hori, Chiaki T. Oguchi

GEOMORPHOLOGY　101　(1-2)　33-43　2008/10

DOI： 10.1016/j.geomorph.2008.05.033 　

ISSN： 0169-555X
Holocene fluvial deposits of cores ST1 and ST2 from the northern part of Nobi Plain, central Japan Peer-reviewed

HORI Kazuaki, KOIDE Satoru, SUGIURA Masanori

The Quat. Res.　47　(1)　51-56-56　2008/02
Publisher: Japan Association for Quaternary Research
DOI： 10.4116/jaqua.47.51 　

ISSN： 0418-2642

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Two sediment cores named ST1 and ST2 were taken from the floodplain in the inner part of Nobi Plain to investigate sedimentary facies of the subsurface deposits. Brackish to marine deposits underlying fluvial deposits occur in both cores, and their characteristics, such as sedimentary facies and facies succession, are quite similar to each other, though ST1 is located approximately 280m west of ST2. Sedimentary environment during the deposition of brackish to marine deposits would have been mostly the same in the two sites. Fluvial deposits accumulated since ca. 4,000 cal BP. Overbank mud characterized by abundant thin plant layers has been deposited at the ST1 site, while channel sand and gravel erodes the underlying brackish to marine deposits at the ST2 site. The channel deposits are overlain by overbank mud, as in the ST1. Two well-sorted very fine- to fine-sand beds, at approximately 1 and 5m depth, are intercalated in the mud in both cores. This suggests that these sites had experienced floods, which deposited sands, at least twice.
Sedimentary facies of borehole cores from the Mekong River floodplain in Cambodia Peer-reviewed

HORI Kazuaki, HARUYAMA Shigeko, SIENG Sotham

Geographical review of Japan series A　80　(12)　183-194-692　2007/10
Publisher: The Association of Japanese Geographers
DOI： 10.4157/grj.80.681 　

ISSN： 1347-9555

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This study analyzes three borehole cores to examine the sedimentary facies of the extensive floodplain of the Mekong River in Cambodia and discusses the relationship between sedimentary facies and surface topography. Sedimentary facies vary according to surface topographic features on the floodplain. Core PA, located near the end of an abandoned channel, records the history of the formation and subsequent filling of the channel during the Holocene. The channel was filled with interlaminated sand and mud overlain by grayish brown to dull reddish brown stiff mud during the last 4500 years. Core CK was located on the southwestern edge of an area of scroll bars and swales between the Mekong and Bassac rivers. In this core, muddy overbank deposits overlie sandy deposits that probably represent a point bar. The accumulation of the overbank deposits may have started around 2000 cal yr BP. Core TA was obtained from the floodplain along the west bank of the Tonle Sap River. Mottled stiff mud containing granules occurs about 1m below the surface and overlies subangular granules. Muddy overbank deposits corresponding to those of the other two boreholes are not present at the site despite frequent flooding of the Tonle Sap River.
An early Holocene sea-level jump and delta initiation Peer-reviewed

Kazuaki Hori, Yoshiki Saito

Geophysical Research Letters　34　(18)　2007/09/28

DOI： 10.1029/2007GL031029 　

ISSN： 0094-8276
電気探査からみたベトナムナムディン省バッコック村における地形発達

平出重信, 春山成子, 中里裕臣, 堀和明, 田辺晋, Doanh L. Q

地質汚染―医療地質―社会地質学会誌　3　26-40　2007/07
Horizontal and vertical variation of 2004 Indian tsunami deposits: An example of two transects along the western coast of Thailand Peer-reviewed

Kazuaki Hori, Ryota Kuzumoto, Daisuke Hirouchi, Masatomo Umitsu, Naruekamon Janjirawuttikul, Boonrak Patanakanog

MARINE GEOLOGY　239　(3-4)　163-172　2007/04

DOI： 10.1016/j.margeo.2007.01.005 　

ISSN： 0025-3227
Rapid on-site topographic mapping with a handheld laser range finder for a geoarchaeological survey in Syria Peer-reviewed

Yuichi S. Hayakawa, Takashi Oguchi, Junko Komatsubara, Kaori Ito, Kazuaki Hori, Yoshihiro Nishiaki

GEOGRAPHICAL RESEARCH　45　(1)　95-104　2007/03

DOI： 10.1111/j.1745-5871.2007.00431.x 　

ISSN： 1745-5863
Palynological record of climate change during the last deglaciation from the Song Hong (Red River) delta, Vietnam Peer-reviewed

Z Li, Y Saito, E Matsumoto, YJ Wang, S Haruyama, K Hori, LQ Doanh

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY　235　(4)　406-430　2006/06

DOI： 10.1016/j.palaeo.2005.11.023 　

ISSN： 0031-0182
アジアの大河川にみられる沖積層 Peer-reviewed

堀和明, 斎藤文紀, 田辺晋

地質学論集　59　(59)　157-168-168　2006/05
Publisher: 日本地質学会
ISSN： 0385-8545
Anisotropy of magnetic susceptibility (AMS) characteristics of tide-influenced sediments in the Late Pleistocene-Holocene Changjiang Incised-Valley Fill, China Peer-reviewed

BZ Liu, Y Saito, T Yamazaki, A Abdeldayem, H Oda, K Hori, QH Zhao

JOURNAL OF COASTAL RESEARCH　21　(5)　1031-1041　2005/09

DOI： 10.2112/03-0078.1 　

ISSN： 0749-0208
Yangtze offshore, China: Highly laminated sediments from the transition zone between subaqueous delta and the continental shelf Peer-reviewed

ZH Wang, Y Saito, K Hori, A Kitamura, ZY Chen

ESTUARINE COASTAL AND SHELF SCIENCE　62　(1-2)　161-168　2005/01

DOI： 10.1016/j.ecss.2004.08.012 　

ISSN： 0272-7714
Sedimentary facies, physical properties, and radiocarbon dates of the GS-SK-1 core obtained from Kakinoki district, Nakagawa lowland, central Japan.

ISHIHARA YOSHIRO, KIMURA KATSUMI, TANABE SUSUMU, NAKASHIMA REI, MIYACHI YOSHINORI, HORI KAZUAKI, INAZAKI TOMIO, HACHINOHE SHOICHI

地質調査研究報告　55　(7-8)　183-200　2004/11/30
Publisher: National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan
DOI： 10.9795/bullgsj.55.183 　

ISSN： 2186-490X 1346-4272

eISSN： 2186-490X

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"Chuseki-so", which is an incised-valley fill deposited since the last glacial maximum, is distributed under the Nakagawa Lowland, Saitama Prefecture, central Japan. In this study, sedimentary facies, radiocarbon dates and sediment properties of the GS-SK-1 cores (GS-SK-1A, GS-SK-1N and GS-SK-1T) drilled at a central part of the Nakagawa Lowland, were analyzed for clarifying stratigraphy and sedimentary environments of incised valley fills in the Nakagawa Lowland. The "Chusekiso" of the GS-SK-1A core is composed of fluvial to shallow marine sediments as follows, in ascending order: (1) fluvial channel fills of pebble to pebbly sand, (2) flood plain to salt marsh deposits of alternation of sand and mud, (3) muddy tidal flat deposits of massive mud containing molluskan fossils, (4) sandy tidal flat to sand shoal deposits of poorly-sorted silty sand containing shell fragments and granules, (5) inner bay (prodelta to delta front) deposits of massive mud intercalated by thin ripple sand and abundant burrows, and (6) fluvial channels fills to flood plain deposits of alternation of sand and mud. Nineteen radiocarbon dates, 48,350 to 1,270 yrBP in radiometric 14C ages,indicate that the incised valley fills are formed by a set of transgression and regression. Sediment properties, i.e. N-value, mud contents, bulk densities, magnetic susceptibility, water contents, luminosity and color contrasts of these deposits, vary stratigaraphically, corresponding to sedimentary facies or at boundaries of them.
Sedimentary facies, physical properties, and radiocarbon dates of the GS-KM-1 cores from Komatsugawa district, Tokyo Lowland, central Japan.

MIYACHI YOSHINORI, KIMURA KATSUMI, ISHIHARA YOSHIRO, TANABE SUSUMU, NAKASHIMA REI, HORI KAZUAKI, NAKAYAMA TOSHIO, SAITO YOSHIKI

地質調査研究報告　55　(7-8)　201-219　2004/11/30
Publisher: National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan
DOI： 10.9795/bullgsj.55.201 　

ISSN： 2186-490X 1346-4272

eISSN： 2186-490X

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The latest Pleistocene to Holocene deposits, filling incised valleys carved during the last glacial age, are distributed beneath the Tokyo Lowland, Tokyo Metropolis, central Japan. The GSKM-1 cores (GS- KM -1A, GS- KM -1B and GS- KM -1C) were drilled at a central part of the Tokyo Lowland, and sedimentary facies, AMS radiocarbon dates and physical properties of the cores were analyzed in detail for clarifying stratigraphy, sedimentary environments and the relationship between sedimentary environment and sediment properties on incised valley fills in the Tokyo Lowland. The latest Pleistocene to Holocene deposits of GS-SK-1 cores consist of fluvial to shallow marine succession as follows, in ascending order: (1) fluvial channel fills of pebble to pebbly sand, (2) flood plain,fluvial channel fills influenced by tidal current and muddy tidal flat deposits, which are characterized by alternation of sand and mud, (3) sandy tidal flat to sand shoal deposits of sand containing blackish to marine shell fragments, (5) inner bay (prodelta to delta front) deposits of massive mud intercalated by thin ripple sand and abundant burrows, and (6) fluvial channels fills to flood plain deposits in deltaplain of alternation of sand and mud. The AMS radiocarbon dates of 21 numbers, covering 11,090 to 2,350 yrBP in radiometric 14C ages, indicate that the incised valley fills were formed by a set of transgression and regression. Sediment properties, such as N-value, mud contents, bulk densities,magnetic susceptibility, water contents, luminosity and color contrasts tend to vary with horizon and sedimentary facies.
Delta initiation and Holocene sea-level change: example from the Song Hong (Red River) delta, Vietnam Peer-reviewed

K Hori, S Tanabe, Y Saito, S Haruyama, Nguyen, V, A Kitamura

SEDIMENTARY GEOLOGY　164　(3-4)　237-249　2004/02

DOI： 10.1016/j.sedgeo.2003.10.008 　

ISSN： 0037-0738
Song Hong (Red River) delta evolution related to millennium-scale Holocene sea-level changes Peer-reviewed

S Tanabe, K Hori, Y Saito, S Haruyama, VP Vu, A Kitamura

QUATERNARY SCIENCE REVIEWS　22　(21-22)　2345-2361　2003/11

DOI： 10.1016/S0277-3791(03)00138-0 　

ISSN： 0277-3791
Early Holocene mud-ridge formation in the Yangtze offshore, China: a tidal-controlled estuarine pattern and sea-level implications Peer-reviewed

ZY Chen, Y Saito, K Hori, YW Zhao, A Kitamura

MARINE GEOLOGY　198　(3-4)　245-257　2003/07

DOI： 10.1016/S0025-3227(03)00119-1 　

ISSN： 0025-3227
Morphology and Sediments of Large River Deltas Peer-reviewed

HORI Kazuaki, SAITO Yoshiki

J. Geogr.　112　(3)　337-359-359　2003/06
Publisher: Tokyo Geographical Society
DOI： 10.5026/jgeography.112.3_337 　

ISSN： 0022-135X

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Large rivers with high sediment discharge, such as the Amazon, Ganges-Brahmaputra, and Huanghe (Yellow) rivers, have formed mega-deltas at their mouths. This paper reviews morphology and sediments of mega-deltas and their Holocene evolution in relation to sea-level changes, channel avulsion, and past-sediment discharge. Application of various radiometric dating techniques to delta deposits, especially since the 1980's has made it possible to clarify delta evolution dynamically on 10-to 1000-year time scales. Most of the deltas are located in developing countries, and have environmental problems principally caused by human activities. For the evaluation of current status and human activities in deltas and drainage basins, both natural and anthropogenic changes of deltas should be analyzed from the viewpoints of geology, sedimentology, and their evolution.
Sedimentary facies and radiocarbon dates of the Nam Dinh-1 core from the Song Hong (Red River) delta, Vietnam Peer-reviewed

S Tanabe, K Hori, Y Saito, S Haruyama, LQ Doanh, Y Sato, S Hiraide

JOURNAL OF ASIAN EARTH SCIENCES　21　(5)　503-513　2003/02

DOI： 10.1016/S1367-9120(02)00082-2 　

ISSN： 1367-9120
Control of incised-valley fill stacking patterns by accelerated and decelerated sea-level rise: the Changjiang example during the last deglaciation Peer-reviewed

K Hori, Y Saito, Q Zhao, P Wang

GEO-MARINE LETTERS　22　(3)　127-132　2002/11

DOI： 10.1007/s00367-002-0105-y 　

ISSN： 0276-0460
Evolution of the coastal depositional systems of the Changjiang (Yangtze) River in response to late pleistocene-holocene sea-level changes Peer-reviewed

K Hori, Y Saito, QH Zhao, PX Wang

JOURNAL OF SEDIMENTARY RESEARCH　72　(6)　884-897　2002/11

DOI： 10.1306/052002720884 　

ISSN： 1527-1404

eISSN： 1938-3681
Paleotidal regime in the Changjiang (Yangtze) Estuary, the East China Sea, and the Yellow Sea at 6 ka and 10 ka estimated from a numerical model Peer-reviewed

Uehara, K, Saito, Y, Hori, K

Marine Geology　183　179-192　2002/04

DOI： 10.1016/S0025-3227(01)00255-9 　
Architecture and evolution of the tide-dominated Changjiang (Yangtze) River delta, China Peer-reviewed

K Hori, Y Saito, QH Zhao, PX Wang

SEDIMENTARY GEOLOGY　146　(3-4)　249-264　2002/01

DOI： 10.1016/S0037-0738(01)00122-1 　

ISSN： 0037-0738

eISSN： 1879-0968
The Huanghe (Yellow River) and Changjiang (Yangtze River) delta: a review on their characteristics, evolution and sediment discharge during the Holocene Peer-reviewed

Saito, Y, Yang, Z, Hori, K

Geomorphology　41　219-231　2001/11

DOI： 10.1016/S0169-555X(01)00118-0 　
Sedimentary facies and Holocene progradation rates of the Changjiang (Yangtze) delta, China Peer-reviewed

K Hori, Y Saito, QH Zhao, XR Cheng, PX Wang, Y Sato, CX Li

GEOMORPHOLOGY　41　(2-3)　233-248　2001/11

DOI： 10.1016/S0169-555X(01)00119-2 　

ISSN： 0169-555X

eISSN： 1872-695X
Element geochemistry of Holocene sediment and paleoenvironmental change in the Changjiang Estuary Peer-reviewed

SY Yang, CX Li, QH Zhao, Y Saito, K Hori

SCIENCE IN CHINA SERIES B-CHEMISTRY　44　40-46　2001/08

ISSN： 1006-9291
Highest-latitude coral reef at Iki Island, Japan Peer-reviewed

H Yamano, K Hori, M Yamauchi, O Yamagawa, A Ohmura

CORAL REEFS　20　(1)　9-12　2001/08

DOI： 10.1007/s003380100137 　

ISSN： 0722-4028
Progradation of the Changjiang River delta since the mid-Holocene Peer-reviewed

K Hori, Y Saito, QH Zhao, PX Wang, CX Li

SCIENCE IN CHINA SERIES B-CHEMISTRY　44　87-91　2001/08

ISSN： 1006-9291
Sedimentary facies of the tide-dominated paleo-Changjiang (Yangtze) estuary during the last transgression Peer-reviewed

K Hori, Y Saito, QH Zhao, XR Cheng, PX Wang, Y Sato, CX Li

MARINE GEOLOGY　177　(3-4)　331-351　2001/07

DOI： 10.1016/S0025-3227(01)00165-7 　

ISSN： 0025-3227

eISSN： 1872-6151
Paleocurrent analysis for the Late Pleistocene-Holocene incised-valley fill of the Yangtze delta, China by using anisotropy of magnetic susceptibility data Peer-reviewed

B Liu, Y Saito, T Yamazaki, A Abdeldayem, H Oda, K Hori, Q Zhao

MARINE GEOLOGY　176　(1-4)　175-189　2001/06

DOI： 10.1016/S0025-3227(01)00151-7 　

ISSN： 0025-3227
Submarine Morphology of the Island Shelf off the Middle and South Ryukyu Islands, Southwest Japan Peer-reviewed

HORI Kazuaki, KAYANNE Hajime

Geographical review of Japan. Ser.A　73A　(3)　161-181-181　2000/03
Publisher: The Association of Japanese Geographers
DOI： 10.4157/grj1984a.73.3_161 　

ISSN： 0016-7444

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The submarine morphology and distribution of depositional features of marine sediments on the island shelf off the middle and south Ryukyu Islands were examined using echo sounding and seismic profiling data and drilling cores through the modern reef crest and moat. The geomorphic development of the island shelf is discussed in terms of relative sea level change since the Last Glacial Maximum. The distinctive morphological features on the island shelf are classified as the reef slope (RS), inner break (TB), outer break (OB), inner shelf break (ISB), and shelf break (SB), in descending order. The average depth of the TB is about 50-55 m on the investigated part of the island shelf with the exception of Kikai Island which has been uplifting rapidly. Pinnacles are well developed and sediments are expected to be composed mainly of reef materials on the slopes above the TB. On the other hand, pinnacles are poorly developed and detrital deposits accumulate below the TB. Gently seaward-sloping platforms are often observed from the TB to OB. The depth relationship between the TB and relative sea level change suggests that the reef accumulation started to grow actively after 10-11 kyr B. P. The reef accumulation area, however, has been estimated to move landward because the rate of sea level rise exceeded the rate of upward growth of the coral reefs. Erosional processes may have occurred on the seabed from the TB to OB to form some platforms with gently seaward slopes during the periods of stand still or slow rise in sea level after the Last Glacial Maximum.
Late Pleistocene Geomorphic Development of the Coastal Plain in the Middle and Lower Reaches of the Toyo River, Central Japan Peer-reviewed

HORI Kazuaki

Geographical review of Japan. Ser.A　71A　(4)　254-271-271　1998/04
Publisher: The Association of Japanese Geographers
DOI： 10.4157/grj1984a.71.4_254 　

ISSN： 0016-7444

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The geomorphic development of coastal plains is considered to be influenced by sea-level changes associated with glacial-interglacial cycles. The author has selected the middle and lower reaches of the Toyo River as the study area to discuss the relationships between the geomorphic development of the coastal plains and sea-level changes since the Late Pleistocene, and identified the stratigraphy of the river terraces and the subsurface deposits by analyzing boring data. The main results are summa-rized in the following. The fluvial surfaces formed by the Toyo River are classified into five levels: highest terraces; higher terraces; middle terraces (Toyohashi terrace and Kozakai terrace); lower terraces; and allu-vial surfaces, in descending order (Fig. 3). Older fans and younger fans were formed by tributaries of the Toyo River. The highest terraces and higher terraces were formed before the oxygen isotope stage (abbreviated as St. 6). The middle terraces were thought to be formed after St. 5 and before St. 2. The lower terraces and alluvial surfaces were formed during the period of St. 2 and St. 1, respec-tively. Two sedimentary cycles associated with the glacio-eustatic sea-level changes are recognized under the alluvial and Kozakai surfaces in the lower reaches of the river, respectively (Fig. 7). The depos-its beneath the alluvial surface are composed of an alluvial basal gravel bed (ABG), lower sand bed (LS), middle mud bed (MM), and upper sand bed (US) The ABG was deposited during the lower sea level at St. 2. Radiocarbon ages on mollusks of 6, 640, 6, 620, and 6, 494 yr BP have been obtained from the MM (Fig. 9). The MM is the deposit resulting in the postglacial transgression. The deposits be-neath the Kozakai surfaces are divided into four members: Kozakai basal gravel bed (KBG); Kozakai sand bed (KS); Kozakai mud bed (KM); and Kozakai gravel bed (KG), in ascending order. The KBG was formed in the lower sea level at St. 6. The KM is thought to be marine sediments resulting from the transgression during St. 6 to St. 5e. The KG was deposited as a fluvial deposit during the regres-sion after the last interglacial transgression. Geomorphic development during the period of St. 6-5e was mainly influenced by sea-level changes, in particular the rapid transgression at St. 5e. A similar process is also observed during the period St. 2-1. A rapid sea-level rise dominated the geomorphic development during the period from the glacial to the interglacial stage.

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Misc. 41

Evolution of the Kikugawa Lowland based on sediment core analysis

Hori Kazuaki, Ishii Yuji, Tamura Toru, Sato Yoshiki, Ianazaki Tomio, Nakanishi Toshimichi, Kitagawa Hiroyuki, Hirouchi Daisuke, Mitoma Kayo, Matta Nobuhisa

Proceedings of the General Meeting of the Association of Japanese Geographers　2022s　158　2022
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2022s.0_158 　

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The topographic features such as marine terraces and coastal plains and their sediments have been used to study the crustal movement and tsunami history associated with the repeated earthquakes in the Nankai Trough. In order to extract valuable information on crustal movement and tsunamis through the analysis of these landforms and sediments, it is necessary to clarify the relationship between the landforms and strata formation and glacial sea-level change. We report the results of analysis of sediment cores obtained from the Kikugawa lowland in the eastern part of the Enshunada and discuss the formation process of the Kikugawa lowland.
GPR survey for estimating the internal structure of the beach levee formed in the coastal lowland of Enshunada Sea

中埜貴元, 松多信尚, 堀和明, 廣内大助, 杉戸信彦, 佐藤善輝, 石山達也

日本地球惑星科学連合大会予稿集(Web)　2020　2020
氾濫原にみられる微高地はすべて自然堤防起源か—特集防災知っておきたい地形用語

堀和明

地理　62　(10)　24-28　2017/10
Publisher: 東京 : 古今書院
ISSN： 0577-9308
Difference of the tsunami height according to type of the coastal landforms in the case of the 2011 Tohoku-oki tsunami and historical tsunamis

MATSUTA Nobuhisa, SUGITO Nobuhiko, SENDA Yoshimichi, HORI Kazuaki, ISHIGURO Satoshi, UCHIDA Chikara, SUZUKI Yasuhiro

Proceedings of the General Meeting of the Association of Japanese Geographers　2013　100091-100091　2013
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2013a.0_100091 　
Holocene sedimentary environment change and peat formation in the lower reaches of the Ishikari River

ISHII Yuji, HORI Kazuaki

Proceedings of the General Meeting of the Association of Japanese Geographers　2013　102-102　2013
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2013s.0_102 　
東北地方太平洋沖地震による津波被災マップの作成経緯と意義 Peer-reviewed

松多信尚, 杉戸信彦, 後藤秀昭, 石黒聡士, 中田高, 渡辺満久, 宇根寛, 田村賢哉, 熊原康博, 堀和明, 廣内大助, 海津正倫, 碓井照子, 鈴木康弘

E-journal GEO　7　(2)　214-224　2012/11
What the causes of differentiated local casualties in the 2011 Tohoku Earthquake?

Takahashi Makoto, Hori Kazuaki, Matsuta Nobuhisa, Tanaka Shigeyoshi

Proceedings of the General Meeting of the Association of Japanese Geographers　2012　(82)　100058-100058　2012
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2012a.0_100058 　

ISSN： 1345-8329

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In this paper, we examine the interrelationships between locally varied casualties, and physical mechanisms of tsunami flows, physical geographies and social conditions of the localities, and then discuss what caused the catastrophe in the 2011 Tohoku Earthquake.
Latest Pleistocene to Holocene deposits of the inner part of the Ishikari Plain

Hori Kazuaki, Ito Ayana, Tanabe Susumu, Nakanishi Toshimichi, Hong Wan

Proceedings of the General Meeting of the Association of Japanese Geographers　2012　100084-100084　2012
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2012s.0_100084 　

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We recovered two borehole cores from the inner part of the Ishikari Plain to clarify the evolution of the floodplain in response to latest Pleistocene to Holocene environmental change. The base of the both cores were composed of sand and gravel formed probably during a sea-level lowstand. Thick, organic-rich mud occurs in the upper part of the cores. Radiocarbon ages suggest that the mud were accumulated after about 7 cal kyr BP.  
P8. Uplift of the Matsudai mud volcano associated with the earthquake near the border of Nagano and Niigata Prefectures, measured by 3D laser scanner(Abstracts of Paper Presented at Fall Meeting of the Union, September 2011)

MATTA Nobuhisa, HAYAKAWA Yuichi S., HORI Kazuaki, KUO Yu-ting, SUGITO Nobuhiko

33　(1)　94-95　2012
Publisher: 日本地形学連合
ISSN： 0389-1755
津波被災地における名古屋大グループの浸水高調査

海津正倫, 杉戸信彦, 松多信尚, 堀和明, 石黒聡士

月刊地理　56　(12)　38-45　2011
Publisher: 古今書院
ISSN： 0577-9308
2万5千分の1津波被災マップ

日本地理学会津波被災マップ作成チーム, 鈴木康弘, 石黒聡士, 碓井照子, 海津正倫, 後藤秀昭, 杉戸信彦, 中田高, 廣内大助, 堀和明, 松多信尚, 渡辺満久, 宇根寛

月刊地理　56　(6)　49-57　2011
Publisher: 古今書院
ISSN： 0577-9308
P20. Floodplain accumulation rates during the Holocene(Meeting of the Union in October 2009)

HORI Kazuaki

31　(1)　76-76　2010
Publisher: 日本地形学連合
ISSN： 0389-1755
Sedimentary facies of the late pleistocene to early holocene incised-valley fill: an example from the Nobi Plain

Bulletin of Research Institute of Meijo University　(14)　149-152　2009
Publisher: 名城大学総合研究所
ISSN： 1344-8099
Fan deltas formed at glacial lakes around the Northern Patagonian Icefield

AOKI Tatsuto, HORI Kazuaki

Proceedings of the General Meeting of the Association of Japanese Geographers　2009　(0)　159-159　2009
Publisher: The Association of Japanese Geographers
DOI： 10.14866/ajg.2009s.0.159.0 　
Classification, Architecture, and Evolution of Large-river Deltas

Kazuaki Hori, Yoshiki Saito

Large Rivers: Geomorphology and Management　75-96　2008/02/13
Publisher: John Wiley & Sons, Ltd
DOI： 10.1002/9780470723722.ch6 　
Change of desert environment and human activities during the last 3000 years in the lowest reaches of Heihe River, China

ENDO Kunihiko, QI Wuyun, MU Guijin, ZHENG Xiangmin, MURATA Taisuke, HORI Kazuaki, SOHMA Hidehiro, TAKADA Masashi

Project report on an Oasis-region　6　(2)　181-199　2007/03
P7. Sedimentary facies and accumulation rates of natural levee and floodbasin deposits : an example from the northern part of the Nobi Plain(Presented at the Meeting of the Union in March 2007)

HORI Kazuaki, UEDA Hiroki, USAMI Shogo

28　(3)　285-285　2007
Publisher: 日本地形学連合
ISSN： 0389-1755
Sedimentary facies of borehole cores from the flood plain of the Mekong River

HORI Kazuaki, HARUYAMA Shigeko, SOTHAM Sieng

(69)　234-234　2006/03/10
Fluvial deposits of the ST1 and ST2 cores obtained from the northern part of the Nobi Plain

HORI Kazuaki, KOIDE Satoru, SUGIURA Masanori

(69)　95-95　2006/03/10
Flood disaster as seen from paleoflood research by geomorphologists(Abstracts of Papers Presented at the Fall Meeting of the Union, October 2005)

OGUCHI Takashi, HORI Kazuaki, AOKI Tatsuto, OGUCHI Chiaki

27　(1)　97-97　2006
Publisher: 日本地形学連合
ISSN： 0389-1755
P1. Tsunami deposits along the western coast of Thailand caused by the earthquake off Sumatra(Abstracts of Papers Presented at the Fall Meeting of the Union, October 2005)

HORI Kazuaki, HIROUCHI Daisuke, Umitsu Masatomo

27　(1)　108-108　2006
Publisher: 日本地形学連合
ISSN： 0389-1755
18. River terraces and their deposits along the Khabur River, Northeast Syria (2nd report)(Abstracts of Papers Presented at the Fall Meeting of the Union, October 2005)

OGUCHI Takashi, HORI Kazuaki, WATANUKI Takuya, CHEN Yue Gau, KOMATSUBARA Junko, OGUCHI Chiaki T., HAYAKAWA Yuichi, NISHIAKI Yoshihiro

27　(1)　107-107　2006
Publisher: 日本地形学連合
ISSN： 0389-1755
Mouth of the Abe River

Hori Kazuaki

26　(2)　1-1　2005
Publisher: 日本地形学連合
ISSN： 0389-1755
Reconstruction of Paleoenvironment in the lower reaches of Heihe, Inner Mongolia, north China-migration of Heihe and Juyan lakes-

Endo,Kunihiko, Sohma,Hidehiro, Mu, Guijin, Hori,Kazuaki, Murata,Taisuke, Qi,Wuyun

Project Report on an Oasis-region　3　(2)　1-10　2003/11
Coordinate Transformation of the Population Mesh Data in Japanese Census using Interpolation Methods

AOKI Tatsuto, HORI Kazuaki, OGUCHI Takashi, ESAKI Yuji

63　102　2003/03/29
A relationship between incised-valley fill systems and a rate of sea-level change

HORI Kazuaki, SAITO Yoshiki

63　105-105　2003/03/29
Noduler gravel formed by salt precipitation along the Khabur River, Northeast Syria(Papers Presented at the Spring Meeting of the Union, May, 2003)

OGUCHI Chiaki, OGUCHI Takashi, HORI Kazuaki, NISHIAKI Yoshihiro

24　(3)　330-331　2003
Publisher: 日本地形学連合
ISSN： 0389-1755
River terraces and fluvial deposits along the Khabur River, Northeast Syria(Papers Presented at the Spring Meeting of the Union, May, 2003)

OGUCHI Takashi, HORI Kazuaki, OGUCHI Chiaki, NISHIAKI Yoshihiro

24　(3)　335-336　2003
Publisher: 日本地形学連合
ISSN： 0389-1755
Sedimentary facies and sediment properties of GS-KM-1 and GS-SK-1 cores obtained from the Tokyo and Nakagawa Lowlands, Kanto Plain

Tanabe Susumu, Ishihara Yoshiro, Kimura Katsumi, Miyachi Yoshinori, Nakashima Rei, Hara Mikiya, Kawai Sayuri, Ishihara Sonoko, Hori Kazuaki

Annual Meeting of the Geological Society of Japan　2003　47-47　2003
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2003.0_47_2 　
Sedimentary system and stratigraphy of the Latest Pleistocene to Holocene incised-valley fills in the Tokyo and Nakagawa Lowlands, Kanto

KIMURA Katsumi, MIYACHI Yoshinori, ISHIHARA Yoshiro, TANABE Susumu, INAZAKI Tomio, NAKASHIMA Rei, HARA Mikiya, NAKAYAMA Toshio, HACHINOHE Shoichi, NAKAZAWA Tsutomu, HORI Kazuaki, SAITO Yoshiki

Annual Meeting of the Geological Society of Japan　2003　46-46　2003
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2003.0_46_2 　
Seimentary facies and evolution of the Song Hong (Red River) delta, Vietnam

HORI Kazuaki, TANABE Susumu, HARUYAMA Shigeko, SAITO Yoshiki, NGUYEN Viet

(62)　134-134　2002/09/26
Characteristics of large river deltas : an example from the Changjiang River delta

HORI Kazuaki, SAITO Yoshiki

61　251-251　2002/03/01
O-95 Integrated Project Planning of Geology and Applied Earth-Science in Urban Areas

Kimura K., Hachinohe S., Hasegawa I., Hori K., Horikawa H., Inazaki T., Ishii T., Ishihara Y., Kano N., Komazawa M., Miyachi Y., Mizuno K., Murakami F., Murakami Y., Murata Y., Nakajima R., Nakayama T., Nakazato H., Nakazawa T., Nishimura K., Ozaki M., Sangawa A., Saito Y., Satake K., Sekiguchi H., Shimokawa K., Taguchi Y., Takahashi M., Uchida Y., Wakita K., Watanabe M., Yamaguchi K., Yanagisawa Y., Yokokura T.

Annual Meeting of the Geological Society of Japan　2002　46　2002
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2002.0_46_2 　

ISSN： 1348-3935

eISSN： 2187-6665
O-212 Song Hong (Red River) delta evolution related to mid-Holocene sea level changes

Tanabe Susumu, Hori Kazuaki, Saito Yoshiki, Haruyama Shigeko, Phai Vu Van

Annual Meeting of the Geological Society of Japan　2002　104-104　2002
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2002.0_104_2 　
An estuary system formed in the paleo-Changjiang incised-valley during the last transgression

HORI Kazuaki, SAITO Yoshiki, ZHAO Quanhong, WANG Pinxian

59　101-101　2001
The vertical electrical sounding in Bac Coc Village,Vietnam

HIRAIDE Shigenobu, HARUYAMA Shigeko, HORI Kazuaki, TANABE Susumu, DOANH Le Quoc

58　78-79　2000/10
IAG Yangtze Fluvial Conference 参加報告

堀和明

地形 = Transactions, Japanese Geomorphological Union　21　(1)　74-76　2000/01/25
Publisher: 日本地形学連合
ISSN： 0389-1755
O-162 Sequence stratigraphy of the incised-valley fill in the Changjiang (Yangtze) delta, China

SAITO Yoshiki, HORI Kazuaki, ZHAO Quanhong, WANG Puixian, LI Congxian

Annual Meeting of the Geological Society of Japan　2000　92-92　2000
Publisher: The Geological Society of Japan
DOI： 10.14863/geosocabst.2000.0_92_1 　
Holocene progradation rate of the Changjiang (Yangtze) Delta, China

HORI Kazuaki, SAITO Yoshiki, ZHAO Quanhong, CHENG Xinrong, WANG Pinxian, LI Congxian

57　152-153　2000
The buried valley morphology and deposits under the Changjiang River delta

HORI Kazuaki, SAITO Yoshiki, ZHAO Quanhong, CHENG Xinrong, WANG Pinxian, LI Congxian

55　110-111　1999/03
豊川下流域の埋没谷と後期更新世以降の地殻変動

堀和明

日本地理学会予稿集　50　106-107　1996/10/01

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Books and Other Publications 7

Reference Module in Earth Systems and Environmental Sciences

Elsevier　2021
沖積低地の地形環境学（沖積低地を構成する地層はどのようにしてできてきたか，世界のデルタ，濃尾平野の表層堆積物）

海津正倫編

古今書院　2012/10/20

ISBN: 9784772252638
Human and Natural Environmental Impact for the Mekong River

Haruyama, S. Ed

TERRAPUB　2011/02/28

ISBN: 9784887041554
宇宙から見た地形（ミシシッピデルタ―典型的な鳥趾状デルタとその変遷）

加藤碵一, 山口靖, 山崎晴雄, 渡辺宏, 汐川雄一, 薦田麻子

朝倉書店　2010/02/20

ISBN: 9784254163476
デジタルブック最新第四紀学（世界と日本のデルタ，日本列島の地形と地質（概説））

日本第四紀学会

日本第四紀学会　2009/12
人口・居住と自然－GISによる分析－

小口高ほか

（財）統計情報研究開発センター　2009/04/01
Large Rivers: Geomorphology and Management (Classification, architecture, and evolution of large-river deltas)

Gupta A. Ed

Wiley　2008/02/11

ISBN: 9780470849873

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Research Projects 20

Paleoflood events deciphered from valley-floor deposits

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2023/06/30 - 2026/03/31
Floodplain evolution focusing on river avulsion

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2023/04/01 - 2026/03/31
地域の災害リスクを踏まえた教材開発による防災教育の高度化とその実用性の検討

牛山素行, 吉田圭一郎, 堀和明, 高橋信人

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 静岡大学

2022/04/01 - 2026/03/31
氾濫原―輪中景観における災害軽減／生態系保全のための自然・文化を基盤とする解決策の体系化：持続的な地域の共創に向けた社会規範の再構築に向けて

秋山晶則, 荒木裕子, 倉田和己, 末松憲子, 鷲見哲也, 陀安一郎, 永山滋也, 橋本操, 堀和明, 堀田典裕, アディチャイ・ポルンプロンミン, 森誠一

Offer Organization: 総合地球環境学研究所

System: 土地利用革新のための知の集約プログラム

Category: インキュベーション研究

Institution: 東海国立大学機構名古屋大学

2023/04 - 2024/03
Elucidation of drainage basin characteristics by focusing on the longitudinal and planar morphology of river channel from the headwaters to the mouth

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2021/07/09 - 2023/03/31
Diversity of Nankai Trough earthquakes revealed by Holocene geomorphic development

MATTA NOBUHISA

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Okayama University

2018/04/01 - 2022/03/31

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The purpose of this study was to explicitly show the diversity of Nankai Trough earthquakes and the existence of low-frequency super earthquakes by focusing on beach ridges and sand dunes. Specifically, we reexamined the developmental history of the Kikukawa Lowland, estimated uplift rates, and attempted to clarify formation process of the beach ridge sequence. As a method, we attempted to estimate the basement and Holocene marine sediments depth by making full use of geophysical surveys such as tight-lattice gravity survey, shallow reflection seismic survey, microtremor survey, and GPR survey. These surveys revealed that buried terraces and incised-valleys that cut the terraces were found under the Kikugawa Lowland, and the landform evolution since the middle Holocene has been influenced by the paleo-topography. The uplift rate was estimated to be approximately 1-1.6 mm/yr.
Identification of the chronological and spatial changes of the radiocarbon marine reservoir effect around Japan

Nakanishi Toshimichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Japan Atomic Energy Agency

2018/04/01 - 2021/03/31

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The radiocarbon ages derived from the marine surface water before the nuclear tests are 200 to 1000 years older than the values of atmospheric origin around Japan. On the other hand, the radiocarbon ages of marine carbonate fossils are as old as than terrestrial plant samples of atmospheric origin from the same horizons of Holocene sediments in Kyushu to the Korean coast. These marine reservoir effects are crucial problem in academic fields such as earth science, physical geography, archeology, and history because they obstruct the calibration of radiocarbon ages of marine samples to the calendar years. In order to solve the problem, the spatio-temporal changes in the marine reservoir effect were investigated the latest Pleistoce to Holocene coastal sediments in the region from eastern Hokkaido to southwestern Taiwan.
沖積層解析にもとづく完新世の土石流評価 Competitive

System: 科学研究費助成事業

Category: 挑戦的研究（萌芽）

2017/06 - 2019/03
沈降域の沖積層を用いた最終氷期最盛期以降の海水準変動復元 Competitive

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

2014/04 - 2018/03
Disaster-geographic Investigation on the 2011 Great East Japan Earthquake, toward Improving Hazard Estimation Method

SUZUKI Yasuhiro, MIZUTANI Norimi, KUMAKI Yohta, SUGITO Nobuhiko, NAKANO Takayuki, HORI Kazuaki, OGUCHI Takashi, NODA Toshihiro, KAMIYA Izumi, SUGAI Toshihiko, HAYASHI Yoshitsugu, OKATANI Takaki, KOARAI Mamoru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Nagoya University

2012/04/01 - 2015/03/31

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The myriad of problems that resulted from the 2011 Great East Japan Earthquake exemplified the limitations of scientific understanding of the disaster. This project examines the geographical distribution of disasters, and discusses the results of observing regional disparities among tsunamis and other geo-hazards, ultimately positing that disasters should be considered a primary subject of geography. Finally, we published a special issue of Journal of Geography entitled “Geographical Investigation on the 2011 Great East Japan Earthquake Disaster, Focusing on the Regional Diversity of Tsunamis and Geo-hazards”. This issue gathers our results and examines the geographical variety and regionality of the related disasters. This examination may help us explain unique characteristics of the earthquake or the fundamental reason for damage expansion.
古代日本成立期の自然環境基盤:平城京と奈良盆地周辺の完新世環境変動から Competitive

高田将志

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

2011/04 - 2015/03
河跡湖堆積物の解析にもとづく流域環境復元 Competitive

堀和明

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(A)

2010/04 - 2014/03
Research on geoenvironmental dynamics of coastal and alluvial lowlands Competitive

UMITSU Masatomo, NAKAMURA Toshio, NAGASAWA Ryota, OKUNUKI KeiーIchi, HORI Kazuaki, ONO Eisuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Nagoya University

2007/04 - 2011/03

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In this study, we discussed on the evolution and geo-environment of alluvial and coastal lowlands in relation to natural disasters and environmental change. The landforms of the alluvial lowlands have developed in response to sealevel and climate changes during the postglacial age. The Tsugaru, Noubi and Echigo plains were the target plains, and the sedimentation rate and the evolution process of the alluvial lowlands were discussed by 10^3 or 10^2 years. As a result, it was found that the eruption of Towada had a great influence on the geo-environmental change in the flood plain formed by the Iwaki river and its tributaties. The aggradation of flood plain sediments in the Nobi and Tenryu plains progressed after the culmination of the Holocene transgression. In the Echigo plain, the rate of the sedimentation is almost equivalent to the Holocene sealevel rise. The sedimentation rate of natural levees in the Nobi plain is about 10 times larger than that of the flood basin. Flood condition and micro-landforms of the flood plain were studied about in the plains of Thailand and Java. Flood level based on the images of RADARSAT was analyzed in relation to the topography. Based on the analysis, good relationship between flood condition and the seasonal variation of the paddy-rice planting pattern were clarified in the flood plain of central Thailand. Landform classification based on SRTM-DEM data and satellite images were done in the Thu Bon alluvial plain, central Vietnam. Good relationship between the flood condition and the topography of the plain were clarified and shown with GIS. Furthermore, formation of the acid sulfate acid soil in the Lower Central Plain, Thailand was discussed. And it was made clear that the distribution of acid sulfate soils is related to the distribution of mangrove forest which developed along the extended coastline during the middle Holocene embayment. As mentioned above, time and spatial dynamics in relation to the formation of alluvial lowland were clarified, and the relationship between the geo-environmental dynamics in alluvial and coastal plains and various issues as to natural disasters and human habitation in the lowlands were shown in this study. In addition, several researches for this study were done particularly in Southeastern Asian areas and the result may be able to contribute to the local people.
Evolution of fan delta systems in temperate-humid and tectonically active region Competitive

HORI Kazuaki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Young Scientists (B)

Institution: Meijo University

2007/04 - 2010/03

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This research obtained sediment cores (TR1 and TR2) from the fan delta developed at the lower reaches of the Tenryu River, central Japan to clarify stratigraphy and sedimentary environments of the fan delta. Two sediment cores are similar to each other, and are divided into three depositional units, units 1 to 3. Unit 1 consists of alternation of pebble to pebbly sand, which is interpreted as fluvial sediments. Unit 2 is characterized by organic-rich, sand-mud alternation. Electric conductivity suggests that the unit was formed under marine influence. Unit 3 is composed of clast-supported gravels underlain by mud. Radiocarbon dates show that each unit was deposited almost simultaneously between the both sites. Large accumulation rates, approximately 12 m/kyr, occurred between about 11000 and 8000 cal BP. In contrast, accumulation rates decreased considerably after about 8000 cal BP. The change is probably related to the rate of post-glacial sea-level rise. Moreover, upward-coarsening successions observed at both cores around 8000 cal BP suggest the beginning of regression.
Mechanism of Glacier Variations and Elucidation of the Holocene Environment in Patagonia Icefield, South America. Competitive

ANIYA Masamu, ENOMOTO Hiroyuki, AOKI Tatsuto, HORI Kazuaki, ANMA Ryo, MARUOKA Teruyuki, NAITO Nozomu, FUJITA Koji, MATSUMOTO Takane, SUGIYAMA Shinn

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (A)

Institution: University of Tsukuba

2006/04 - 2010/03

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(1) At Perito Moreno Glacier of the Southern Patagonia Icefield, we measured the glacier surface heights, glacier flow velocity, and calving speed, and long-term temperature at the upper reach.We drilled 510m boreholes with a hotwater drill.Three LIA advances in 15C, 17C and 19C were recognized. (2) The fan deltas distributed on the eastern side of the Northern Patagonia Icefield were investigated. Variations of 21 outlet glaciers of the NPI between 2004/5 and 2008/9 resulted in a total area loss of 5.8 km^2. (3) With the JAMSTEC's research ship [Mirai] we cored sea floor sediments at the offshore of the NPI.
Impact Evaluation of social environment effected by natural environmental change in the large-river-Mekong River Basin Competitive

HARUYAMA Shigeko, URUSHIBARA Kazuko, HORI Kazuaki, OHOKURA Hiroshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (A)

2004/04 - 2008/03

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In this study, we tried to clarify for the Holocene sedimentation and Holocene paleo- geographical process of Large lake of Tonle sap lake, the grate Mekong river and also Mekong delta in the view of land-sea linkage environment and human environment change. In the study filed, the several major archaeological sites of Angkor kingdom of the grate Asia kingdom located on the Tonle sap lake side alluvial plain near Seam reap city and the lowest Mekong delta of Vietnamese territory includes also several important the archaeological site of pre- Angkor kingdom before Angkor period. Their historical successful or die-successful showed by monument and historic materials were effected by the natural environmental change under Asia Monsoon and also converted by the human activities such as the palace construction, deforestation and embankment, dam- construction. We made the geomorphologic land classification map of the Mekong Delta and surrounding area showing the flooding affected area based on the field survey and analysis of JERS 1SAR and Land sat TM Images using remote sensing technology. Also, the hydro-process of the Mekong delta was simulated by Hydro-GIS and presented 3D based on the geomorphologic feature and sedimentation process.
河成低地堆積システムの第四紀環境変動への応答 Competitive

堀和明

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(B)

Institution: 名城大学

2004/04 - 2007/03

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河成層の累重様式と平野微地形の形成過程を,堆積物のボーリング調査にもとついて論じた.今年度は,濃尾平野の河成低地を構成する旧河道と自然堤防上で採取された堆積物コア(AP1およびAP2)を解析し,堆積物の特徴や堆積時期,堆積速度などを検討した.調査地点は岐阜県安八町である. その結果,以下のことがわかった.約3200yrBP以降,両地点は後背湿地の環境となり,植物遺体を多く含む泥の堆積が続いた.その後,揖斐川がAP1コア採取地点の上を流れるようになり,AP1コアの後背湿地堆積物の一部は侵食を受けた.一方,AP2コア採取地点では,砂質の自然堤防堆積物が後背湿地堆積物を覆って急速に堆積するようになった.堆積物の年代測定結果によれば,この地点が揖斐川の流路となったのは,約400cal BP以降と考えられる.歴史記録によると,揖斐川の流路がAP1を通過するようになったのは慶長年間(1596-1615年)の洪水時とされている.したがって,本研究で得られた年代測定結果は,歴史記録とも矛盾しない. 年代測定結果にもとついて,河川成堆積物の堆積速度を推定した.後背湿地堆積物の堆積速度は,AP1コアで約0.1cm/yr, AP2コアで約0.2cm/yrとなる.一方,自然堤防堆積物の堆積速度は約1.5cm/yrであり,後背湿地堆積物の堆積速度に比べて約4-15倍大きい. 河成層の厚さは,AP1コアで7m, AP2コアで10m程度となっており,河成層の下限の標高は約-3mとなり,現在の海水準よりも明らかに低い.これは濃尾平野が養老断層の活動に関係して沈降傾向にあるためだと考えられる. なお,研究成果については,2006年夏の国際堆積学会および2007年春の日本地形学連合春季大会で発表した.
沖積低地の微地形形成と地形環境動態に関する研究 Competitive

海津正倫

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

2005/04 - 2006/03
Environmental Change and Environmental prediction of the Red River Delta

HARUYAMA Shigeko, SHIMAO Minoru, HIRAI Yukihiro, MATSUMOTO Jun, OHKURA Hiroshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: The University of Tokyo

2000 - 2002

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In fact, with the position and the distribution in Vietnamese economy, the Red River Delta has an important role. People are trying to understand more about the formation of the Delta. The natural environmental conditions in present years in the Red River Delta have being considered and researched properly. There is a relation between the geological position, river dynamics, climate and formation of the Delta. With the influence of the embankment system had been set up from a lomg time, the formation of the Delta has been affected by humans activities. As a result, there is a mangrove forest and mangrove ecosystem in the river mouths. Sea level changing had had a relation with the formation of the Delta, now it also affects on the coastal area, changes the coastline by erosion. Climatic changes with the impact of global warming affect directly on the environmental condition of the low land in the coastal area. The lack of precipitation in summer causes the decrease in river discharge, was followed by the salinity intrusion in the river mouths changing in the coast, in where there is increase in sea product cultivation's square. It is necessary to study and research about, the changes of natural environment, gain knowledge and estimate its influences. It also helps people to live in matural environment and improve it.
琉球列島における島棚地形の研究

堀和明

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 特別研究員奨励費

Institution: 東京大学

1998 - 2000

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