1986 - 1987 A stdy on the relationship between the formation of alluvialplain and chuseki-so (Recent alluvial sediments) and the natural environment in latest Quaternary.
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Papers (66):
HIRAI NYUKIHIRO. Why does Lake Abashiri have the largest birdfoot type delta in Japan?. 2022. 67. 9. 88-96
HIRAI YUKIHIRO. Deciphering the Ainu place names attached to the sandbars of Lake Saroma. 2022. 67. 1. 103-111
HIRAI YUKIHIRO. Why is the sandbar of Lake Saroma the longest in Japan?. 2021. 66. 9. 76-83
Hirai Yukihiro. Traditional irrigation system in the first Imperial Mausoleum of the Nguyen Dynasty in central Vietnam and challenges for its regeneration (Part 2). Geography. 2020. 65. 10. 72-79
Hirai Yukihiro. Traditional irrigation system in the first Imperial Mausoleum of the Nguyen Dynasty in Central Vietnam and challenges for its regeneration (Part 1). 2020. 65. 9. 92-99
HIRAI Yukihiro, NGUYEN Van Lap, OANH TA Thi Kim. Big Flood Occurred in Decenber 1999 around Hue and the Tam Giang-Cau Hai Lagoon in Middle Vietnam. 2000. 58. 74-75
Books (22):
The Encyclopedia of Geography
2022 ISBN:9784621307939
The Encyclopedia of New Geopolitics
2020 ISBN:9784621304631
Environmental Topics at Tam Giang Lagoon in Central Viet Nam: Climate change, Shrimp farming and Tourism
Kokon-Shoin Publishers 2015 ISBN:9784772271387
2006/04/01 - 現在 Komazawa University Faculty of Letters, Department of Geography Environmental Study Program
Committee career (2):
2008/04 - 2022/03 日本地理学会 代議員
2013/08 - 2019/07 Tokyou Geographical Society a member of editorial board
Association Membership(s) (6):
日本地理学会
, The Japanese Geomorphological Union
, The Tohoku Geographical Association
, The Japanese Society for Geographical Science
, Tokyou Geographical Society
, Japan Cartographaphers Association