Osawa Hikaru

オオサワヒカル | Osawa Hikaru

Affiliation and department：
Job title： Senior Researcher

Research field (3)： Atmospheric and hydrospheric science , Human geoscience , Forest science

Research keywords (12)： Hydrology , Geomorphology , Landslide , Landslides , Snowmelt , Groundwater , Vadose zone , Field monitoring , Hydrological modeling , Landslides in cold regions , Coastal landslides , Earthquake induced landslides

Research theme for competitive and other funds (17)：

2024 - 2027 積雪内部における氷板の生成が水分浸透に及ぼす影響の解明とモデル化
2024 - 2027 極端気象に伴う降雪量の変動が地すべり活動へ及ぼす影響
2023 - 2027 付加体堆積岩山地における水文・地盤情報カップリングによる雨水貯留・排水特性の把握
2022 - 2027 地震動の時空間的ばらつきを考慮した高精度な地震時の斜面安定性評価手法の開発
2025 - 2026 気候変動に伴う海岸斜面削剥プロセスと土砂流出の定量的評価-現地観測データを活用した海洋生態系への影響評価-

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Papers (17)：

Hikaru OSAWA, Issei DOI, Hiroyuki HIRASHIMA, Takashi OKAMOTO. Propagation characteristics of sonic waves in disturbed wet snow. Bulletin of Glaciological Research. 2024. 42. 95-102
Hikaru OSAWA, Shinichi TOSA, Sumio MATSUURA, Tatsuya SHIBASAKI, Issei DOI, Takashi OKAMOTO. Development and application of a high-resolution monitoring system for a large-displacement rapid landslide. Journal of the Japan Landslide Society. 2024. 61. 3. 91-97
Shinichi TOSA, Tatsuya SHIBASAKI, Yusuke MURAI, Nobuya HAGIWARA, Takashi OKAMOTO, Hikaru OSAWA. Pressure gauge installation using a lightweight boring machine at Busuno Landslide, Niigata Prefecture, Japan : Case study of static and dynamic pore-water pressure observation. Journal of the Japan Landslide Society. 2024. 61. 2. 54-59
Hikaru Osawa, Yuki Matsushi, Sumio Matsuura, Takashi Okamoto. Semiempirical modeling of the transient response of pore pressure to rainfall and snowmelt in a dormant landslide. Landslides. 2023. 21. 2. 245-256
Sumio MATSUURA, Hikaru OSAWA, Tatsuya SHIBASAKI. Destruction of Matsuno tunnel in Ban'etsu West Railway Line due to 1917 landslide during snowmelt period. Journal of the Japan Landslide Society. 2023. 60. 4. 154-160

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MISC (68)：

平島寛行, 大澤光, 山口悟. 斜面積雪中の毛管障壁及び氷板が側方流にあたえる影響-モデルを用いた数値実験-. 雪氷研究大会講演要旨集(Web). 2024. 2024
積雪斜面における選択的な水の流れに関するレビューと今後の課題. Seppyo. 2023. 85. 1. 36-38
平島寛行, 大澤光, 山口悟, AVANZI Francesco. Lateral flow simulation of liquid water in the snowpack - Reproduction simulation for tracer experiment and multi compartment lysimeter data -. 雪氷研究大会講演要旨集(Web). 2022. 2022
平島寛行, 山口悟, AVANZI Francesco, WEVER Nander, 大澤光. Reproduction simulation of nonuniform discharge by lateral flow using multi-dimensional water transport model. 雪氷研究大会講演要旨集(Web). 2021. 2021
大澤光, 土井一生, 荒井紀之, 山川陽祐, 渡壁卓磨. Estimation of subsurface structure in the linear depression spreading over the landslide crown. 日本地球惑星科学連合大会予稿集(Web). 2021. 2021

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Lectures and oral presentations (75)：

ベトナム北部山岳地の土地利用に基づく治山計画の検討
(日本森林学会大会 2025)
2023年5月5日石川県能登地方の地震で被害を受けた斜面の令和6年能登半島地震における被害調査
(京都大学防災研究所研究発表講演会(令和6年度) 2025)
Spatial patterns of sediment discharge in a mountain catchment in northern Vietnam: What the data tell us about the impact of land-use along historical and contemporary contexts
(American Geophysical Union Annual Meeting 2024 2024)
ベトナムにおける治山施設の現状と日本の治山技術の適用可能性
(日本地すべり学会研究発表会 2024)
再活動型地すべりの最大速度までの変位プロセス
(日本地すべり学会研究発表会 2024)

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Education (1)：

2013 - 2018 Kyoto University Graduate School of Science Division of Earth and Planetary Sciences

Professional career (1)：

Ph. D. (Science) (Kyoto University)

Work history (5)：

2023/04 - 現在 Forestry and Forest Products Research Institute Erosion Control Laboratory Senior Researcher
2021/07 - 現在 University of Tsukuba Part-time lecturer
2021/04 - 2023/03 Forestry and Forest Products Research Institute Erosion control laboratory Researcher
2018/11 - 2021/03 University of Tsukuba Ikawa Forest Station, Mountain Science Center, Faculty of Life and Environmental Sciences Assistant Professor
2018/04 - 2018/10 Disaster Prevention Research Institute Geohazards Research Group Researcher

Committee career (3)：

2018/11 - 現在日本地すべり学会地震地すべり研究委員会
2018/11 - 2024/03 日本地すべり学会雪氷圏の地すべり研究委員会
2020/04 - 2021/03 筑波大学山岳科学センター共同利用教育拠点運営委員会

Awards (5)：

2024/09 - Japan Landslide Society Research encouragement award
2020/10 - 日本地すべり学会第59回研究発表会若手優秀発表賞地すべり地における多雪年と少雪年の間隙水圧応答の比較
2017/10 - The Japan Landslide Society Landslide Photo Contest, Excellent Award
2015/09 - International Association of Engineering Geology and the Environment 10th Asian Regional Conference of IAEG, Excellent Paper Award Effects of Snow Load on Water Infiltration in the Ground Surface Layer of a Landslide
2013/08 - The Japan Landslide Society Young Poster Award

Association Membership(s) (4)：

Japanese Geomorphological Union , The Japanese Society of Snow and Ice , JAPAN GEOSCIENCE UNION , THE JAPAN LANDSLIDE SOCIETY

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