Rchr
J-GLOBAL ID:201801011123558537
Update date: Oct. 22, 2024
Niiya Hirofumi
ニイヤ ヒロフミ | Niiya Hirofumi
Affiliation and department:
Job title:
Associate Professor
Homepage URL (1):
https://hniiya.sakura.ne.jp/landform/
Research field (2):
Human geoscience
, Mathematical physics and basic theory
Research keywords (6):
lahar
, Blowing Snow
, Avalanche
, Dune
, Granular Matter
, Turbulence
Research theme for competitive and other funds (23):
- 2024 - 2028 野外観測に基づく吹雪下での雪粒子による消散係数の計測と視程の評価
- 2021 - 2026 Hazard Map based on Numerical snow Avalanche model and Spatio-temporal variation of snow
- 2021 - 2025 オイラー・ラグラジアンモデルによる飛雪の時空間構造の解明と飛雪・積雪環境の評価
- 2020 - 2025 High-resolution analyses on sediment transport of blowing snow and duststorm with large-scale wind tunnel
- 2024 - 2025 超高速度ビデオカメラ式雨量計の開発が拓く降雪密度の高精度推定手法
- 2024 - 2025 火山砕屑物を含む複雑泥流の降伏と流動
- 2024 - 2025 空撮画像を用いた雪崩モデルパラメータ推定と気象・積雪条件の関係
- 2023 - 2024 航空写真を用いた積雪・雪崩堆積状況の判読と雪崩モデルパラメータ推定
- 2023 - 2024 火山砕屑物を含む複雑泥流のレオロジー特性
- 2023 - 2024 最適な避難に向けた高頻度・高精度な降雪密度測定手法の開発
- 2022 - 2023 Viscosity measurement in complicated flow mixing tephra and snow
- 2018 - 2022 Development of prediction method for drifting snow environments by coupling computational fluid dynamics with Lagrangian particle transport model
- 2021 - 2022 小型LiDARによる吹きだまり形状計測のための基礎的実験
- 2021 - 2022 沿岸部における風による砂粒子の飛散・堆積の数値シミュレーション技術の開発
- 2021 - 2022 雪・水・火山砕屑物による混合流の粘性評価
- 2020 - 2021 凝集体を含む水・雪・火山砕屑物混合物の流れ特性
- 2017 - 2020 Theoretical elucidation for spatiotemporal structures of turbulent particle transports and landform patterns in solid-gas multiphase flow
- 2019 - 2020 積雪表面への弾丸衝突に誘発される全層・表層雪崩の発生条件
- 2019 - 2020 火山砕屑物・水・雪の混合泥流における凝集体の形成条件および物理特性
- 2018 - 2019 積雪内への水浸透速度の評価に基づく湿雪雪崩発生予測手法の検討
- 2018 - 2019 回転ドラム実験による火山砕屑物・水・雪の粗大化とその流動特性の解明
- 2014 - 2017 固体-流体混合系における物質輸送及び構造形成に潜む普遍的機構の解明
- 2011 - 2013 流体中を運動する要素集団の輸送現象とパターン形成およびそれらの普遍性の理論的解明
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Papers (31):
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Kouichi Nishimura, Masaki Nemoto, Yoichi Ito, Satoshi Omiya, Kou Shimoyama, Hirofumi Niiya. Elucidation of spatiotemporal structures from high-resolution blowing-snow observations. The Cryosphere. 2024. 4775-4786
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Satoru YAMAGUCHI, Yoichi ITO, Takahiro TANABE, Kouichi NISHIMURA, Satoru ADACHI, Sojiro SUNAKO, Yoshihiko SAITO, Tsubasa OKAZE, Hirofumi NIIYA, Kae TSUNEMATSU, et al. Co-creation with local governments and ski resorts to generate scientific information that contributes to ski resort avalanche safety management. Bulletin of Glaciological Research. 2024. 42. 9-17
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Risa Kawashima, Satoshi Omiya, Hirofumi Niiya, Kouichi Nishimura, Tsubasa Okaze. Analysis of fluctuation of visibility distribution for increased snow-drift flux due to turbulent fluctuation under blowing snow without snowfall. Wind Engineering Research. 2022. 27. 1-10
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Yuki Ikeda, Risa Kawashima, Satoshi Omiya, Hirofumi Niiya, Kouichi Nishimura, Tsubasa Okaze. Relation between mean and instantaneous values of snow-drift flux under drifting snow. Seppyo. 2022. 84. 3. 213-227
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Hirofumi Niiya, Kouichi Nishimura. Hysteresis and Surface Shear Stresses During Snow-Particle Aeolian Transportation. Boundary-Layer Meteorology. 2022. 183. 3. 447-467
more...
MISC (1):
-
OKAZE Tsubasa, NIIYA Hirofumi, OMIYA Satoshi. Field Observation for Elucidation of Spatiotemporal Structures of Blowing Snow. Wind Engineers, JAWE. 2024. 49. 1. 25-32
Books (1):
-
地形現象のモデリング 海底から地球外天体まで
名古屋大学出版会 2017 ISBN:9784815808877
Lectures and oral presentations (2):
-
Enhancing resilience to climate-driven geohazards through international collaboration – experience from the GEOMME partnership’s journey in research and education
(2024)
-
Research on avalanches caused by stability of snow cornices developed by blowing snow
(2024)
Education (3):
- 2011 - 2014 Hiroshima University Graduate School, Division of Natural Science Department of Mathematical and Life Sciences
- 2009 - 2011 Hiroshima University Graduate School, Division of Natural Science Graduate School of Mathematical and Life Science
- 2005 - 2009 Hiroshima University Faculty of Science Department of Mathematics
Professional career (1):
- Ph.D. (Sci.) (Hiroshima University)
Work history (6):
- 2022/04 - 現在 Niigata University Research Institute for Natural Hazards and Disaster Recovery Associate Professor
- 2020/04 - 2022/03 Niigata University Institute for Research Promotion Center for Transdisciplinary Research Assistant Professor
- 2018/02 - 2020/03 Niigata University Institute for Research Promotion Center for Transdisciplinary Research Specially Appointed Assistant Professor
- 2017/04 - 2018/02 Nagoya University Graduate School of Environmental Studies Specially Appointed Assistant Professor
- 2014/04 - 2017/03 Nagoya University Graduate School of Environmental Studies Special researcher of the Japan Society for the Promotion of Science (PD)
- 2011/04 - 2014/03 Hiroshima University Department of Mathematical and Life Sciences, Graduate School of Science Special researcher of the Japan Society for the Promotion of Science (DC1)
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Committee career (3):
- 2019/06 - 現在 日本雪氷学会北信越支部 幹事
- 2023/09 - 2025/03 雪氷研究大会(2024・長岡)実行委員会 実行委員(ホームページ,庶務)
- 2019/06 - 2020/06 雪氷研究大会(2020・新潟)実行委員会 実行委員(庶務)
Awards (14):
- 2022/10 - The Japanese Society of Snow and Ice Hirata Award
- 2021/06 - 日本雪氷学会北信越支部 雪氷奨励賞 雪粒子の挙動に立脚した吹雪・雪崩・泥流の運動メカニズムの解明
- 2021/03 - 新潟大学 新潟大学研究推進機構研究教授等名称付与
- 2019/02 - 加賀市 加賀市中谷宇吉郎科学奨励賞 若手研究者の部 粒子-流体連続解析を用いた吹雪の時空間構造に関する研究
- 2014/03 - 広島大学 広島大学大学院理学研究科長表彰
- 2013/09 - 雪氷研究大会(2013・北見) 学生優秀発表賞 -口頭発表部門 最優秀発表賞- 粒子モデルを用いた雪崩の頭部形成における初期状態依存性
- 2012/11 - 2012 International Conference on Modeling, Analysis and Simulation Incentive Award for Poster presentation Dunes as dynamical system; numerical and analytical approaches to morphodynamics
- 2012/07 - 広島大学 広島大学エクセレント・スチューデント・スカラシップ 成績優秀学生
- 2012/06 - 日本地球惑星科学連合 2012年大会 固体地球科学セクション 学生優秀発表賞 流体力学的相互作用を組み込んだ粒子なだれのパターン形成
- 2012/02 - The 3rd Taiwan-Japan Joint Workshop for Young Scholars in Applied Mathematics Research Excellence Award Pattern formation of granular avalanches simulated by particle method with hydrodynamics interaction
- 2011/03 - 広島大学 広島大学大学院理学研究科長表彰
- 2010/06 - Journal of the Physical Society of Japan JPSJ Papers of Editors' Choice Three-dimensional dune skeleton model as a coupled dynamical system of two-dimensional cross-sections
- 2009/03 - 広島大学 広島大学理学部長表彰
- 2008/07 - 広島大学 広島大学エクセレント・スチューデント・スカラシップ 成績優秀学生
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Association Membership(s) (4):
JAPAN SOCIETY FOR NATURAL DISASTER SCIENCE
, THE JAPANESE SOCIETY OF SNOW AND ICE
, JAPAN GEOSCIENCE UNION
, THE PHYSICAL SOCIETY OF JAPAN
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