Updated on 2026/06/11

写真a

 
SASAKI ORIE
 
Organization
School of Environment and Society Assistant Professor
Title
Assistant Professor
External link

Research Areas

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering

Papers

  • DETECTING AND VALIDATING A GLOBAL LEVEE DATASET FROM HIGH-RESOLUTION DEM FOR LARGE-SCALE FLOOD MODELING

    Kazuma SHIRAISHI, Do Ngoc KHANH, Orie SASAKI, Julien BOULANGE, Gang ZHAO, Dai YAMAZAKI, Yukiko HIRABAYASHI

    Japanese Journal of JSCE   82 ( 16 )   n/a - n/a   2026

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.25-16146

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  • CAMA-FLOOD SIMULATION WITH LEVEE REPRESENTATION OVER JAPAN

    Tomoki SAITO, Shinjiro KANAE, Orie SASAKI, Gang ZHAO, Dai YAMAZAKI, Yuki KITA, Yukiko HIRABAYASHI, M. H. ASLAM, D. N. KHANH, Wenchao MA

    Japanese Journal of JSCE   82 ( 16 )   n/a - n/a   2026

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.25-16145

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  • LANDSLIDE HAZARD PREDICTION USING A 1000-MEMBER ENSEMBLE FOR THE JULY 2020 HEAVY RAINFALL IN KYUSHU

    Shingo NAKAYAMA, Rie SETO, Shinjiro KANAE, Tsutao OIZUMI, Takuma OTA, Takuya KAWABATA, Orie SASAKI, Le DUC

    Japanese Journal of JSCE   82 ( 16 )   n/a - n/a   2026

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.25-16085

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  • AN ATTEMPT TO ESTIMATE HIGH-RESOLUTION SNOW COVER AREA IN THE HIMALAYAN ALPINE REGION

    Shoei KANNO, Orie SASAKI, Shinjiro KANAE

    Japanese Journal of JSCE   82 ( 16 )   n/a - n/a   2026

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.25-16162

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  • Mapping the World's River Levees: A Hyper‐Resolution Levee Database Based on Digital Elevation Models

    Do Ngoc Khanh, Yugo Tsumura, Orie Sasaki, Kazuma Shiraishi, Daiki Akimoto, Dai Yamazaki, Gang Zhao, Yukiko Hirabayashi

    Geophysical Research Letters   2025.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1029/2024GL114121

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  • Precipitation phase drives seasonal and decadal snowline changes in high mountain Asia

    M Bernat, E S Miles, M Kneib, K Fujita, O Sasaki, T E Shaw, F Pellicciotti

    Environmental Research Letters   2025.6

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    Publishing type:Research paper (scientific journal)  

    <jats:title>Abstract</jats:title>
    <jats:p>Snow cover is of key importance for water resources in high mountain Asia (HMA) and is expected to undergo extensive changes in a warming climate. Past studies have quantified snow cover changes with satellite products of relatively low spatial resolution (∼500 m) which are hindered by the steep topography of this mountain region. We derive snowlines from Sentinel-2 and Landsat 5, 7 and 8 images, which, thanks to their higher spatial resolution, are less sensitive to the local topography. We calculate the snow line altitude (SLA) and its seasonality for all glacierized catchments of HMA and link these patterns to climate variables corrected for topographic biases. As such, the snowline changes provide a clear proxy for climatic changes. Our results highlight a strong spatial variability in mean SLA and in its seasonal changes, including across mountain chains and between the monsoon-dominated and the westerlies-dominated catchments. Over the period 1999–2019, the western regions of HMA (Pamir, Karakoram, Western Himalaya) have undergone increased snow coverage, expressed as seasonal SLA decrease, in spring and summer. This change is opposed to a widespread increase in SLA in autumn across the region, and especially the southeastern regions of HMA (Nyainqentanglha, Hengduan Shan, South–East Himalaya). Our results indicate that the diversity of seasonal snow dynamics across the region is controlled not by temperature or precipitation directly but by the timing and partitioning of solid precipitation. Decadal snowline changes (1999–2009 vs 2009–2019) seasonally precede temperature changes, suggesting that seasonal temperature changes in the Karakoram–Pamir and Eastern Nyainqentanglha regions may have responded to snow cover changes, rather than driving them.</jats:p>

    DOI: 10.1088/1748-9326/adcf39

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  • Historical water temperature change in Japan over the past several decades

    Ryuki Iritani, Kohei Oshima, Takahiro Oda, Orie Sasaki, Kazuo Oki, Hitoshi Miyamoto, Yukiko Hirabayashi

    Hydrological Research Letters   19 ( 4 )   260 - 267   2025

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Hydrology and Water Resources  

    DOI: 10.3178/hrl.25-00018

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  • LANDSLIDE HAZARD PREDICTION USING A 200-MEMBER ENSEMBLE FOR THE JULY 2020 HEAVY RAINFALL IN KYUSHU

    Shingo NAKAYAMA, Rie SETO, Shinjiro KANAE, Tsutao OIZUMI, Takuma OTA, Takuya KAWABATA, Orie SASAKI, Le DUC

    Japanese Journal of JSCE   81 ( 16 )   n/a - n/a   2025

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.24-16032

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  • GLACIER MASS-BALANCE MODELLING: VALIDATION OF AN ENERGY-BALANCE APPROACH INTEGRATING DEBRIS-LAYERS OVER THE HIMALAYAS

    Etienne ARNAUDO, Koyori ISHIKAWA, Orie SASAKI, Shinjiro KANAE

    Journal of JSCE   13 ( 2 )   n/a - n/a   2025

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/journalofjsce.25-27023

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  • Contrasting patterns of change in snowline altitude across five Himalayan catchments

    Orie Sasaki, Evan Stewart Miles, Francesca Pellicciotti, Akiko Sakai, Koji Fujita

    The Cryosphere   2024.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.5194/egusphere-2024-2026

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  • Automatic levee detection using a high-resolution DEM − Case study in Kinu river basin, Japan

    Orie Sasaki, Yugo Tsumura, Masafumi Yamada, Yukiko Hirabayashi

    Hydrological Research Letters   17 ( 1 )   9 - 14   2023

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Hydrology and Water Resources  

    DOI: 10.3178/hrl.17.9

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  • ESTIMATION OF DEBRIS DISTRIBUTION IN GLOBAL GLACIERS AND CALCULATION OF THRMAL RESISTANCE IN ASIAN GLACIERS

    Koyori ISHIKAWA, Orie SASAKI, Shinjiro KANAE

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   78 ( 2 )   I_529 - I_534   2022

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    Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejhe.78.2_i_529

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  • Global exposure to flooding from the new CMIP6 climate model projections

    Yukiko Hirabayashi, Masahiro Tanoue, Orie Sasaki, Xudong Zhou, Dai Yamazaki

    SCIENTIFIC REPORTS   11 ( 1 )   2021.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-021-83279-w

    Web of Science

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  • FUTURE CHANGES IN HYDROPOWER GENERATION IN THE KINGDOM OF BHUTAN UNDER CLIMATE CHANGE

    土居慶祐, 藤岡敦史, 佐々木織江, 花崎直太, 鼎信次郎

    土木学会論文集 B1(水工学)(Web)   75 ( 2 )   2019

  • DEVELOPMENT AND VALIDATION OF A LARGE-SCALE GLACIER MODEL BASED ON AN ENERGY BALANCE APPROACH OVER CENTRAL EUROPE

    佐々木織江, 藤田耕史, 坂井亜規子, 平林由希子, 鼎信次郎

    土木学会論文集 B1(水工学)(Web)   75 ( 2 )   2019

  • ESTIMATION OF DEBRIS DISTRIBUTION ON GLACIERS OVER THE CENTRAL EUROPE DERIVED FROM REMOTE SENSING DATA AND ASSESSMENT OF DEBRIS EFFECTS

    佐々木織江, ZHANG Young, 平林由希子, 鼎信次郎

    土木学会論文集 B1(水工学)(Web)   74 ( 4 )   2018

  • SYNTHETIC GENERATION OF SPATIALLY HIGH RESOLUTION EXTREME RAINFALL USING MONTE CARLO SIMULATION WITH AMeDAS ANALYZED RAINFALL DATA

    渡辺春樹, 井芹慶彦, 佐々木織江, 武川晋也, 吉川沙耶花, 鼎信次郎

    土木学会論文集 B1(水工学)(Web)   73 ( 4 )   2017

  • A global high-resolution map of debris on glaciers derived from multi-temporal ASTER images Reviewed

    Orie Sasaki, Omi Noguchi, Yong Zhang, Yukiko Hirabayashi, Shinjiro Kanae

    The Cryosphere Discussions   1   2016.11

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    Publisher:Copernicus {GmbH}  

    DOI: 10.5194/tc-2016-222

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  • 重力測定衛星GRACEを用いたヒマラヤ高山帯における氷河質量変動の検出

    佐々木織江, KIM Hyungjun, 平林由希子, 山田花グレニス, 鼎信次郎

    水工学論文集(CD-ROM)   56   2012

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MISC

  • AUTOMATIC LEVEE DETECTION USING HIGH-RESOLUSION DEM IN SHIZUOKA CITY

    松永葵, 佐々木織江, 津村悠虎, 鼎信次郎, 平林由希子

    土木学会論文集(Web)   80 ( 16 )   n/a - n/a   2024

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    Publisher:Japan Society of Civil Engineers  

    DOI: 10.2208/jscejj.23-16131

    J-GLOBAL

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  • DEVELOPMENT OF AN AUTOMATIC RIVER LEVEE DETECTION METHOD APPLICABLE TO A WIDE AREA USING A HIGH-RESOLUTION DEM

    津村悠虎, 佐々木織江, 平林由希子

    土木学会論文集(Web)   80 ( 16 )   2024

  • Location characteristics of river levees based on global levee location data

    津村悠虎, 松森翔, 佐々木織江, 平林由希子

    土木学会全国大会年次学術講演会(Web)   78th   2023

  • 高解像度DEMを用いた堤防の自動検出手法の検討

    津村悠虎, 佐々木織江, 平林由希子

    水文・水資源学会研究発表会要旨集(Web)   2023   2023

  • 日本全国における高解像度DEMを用いた堤防の自動検出

    松永葵, 佐々木織江, 津村悠虎, 鼎信次郎, 平林由希子

    水文・水資源学会研究発表会要旨集(Web)   2023   2023

  • Snowline altitude in Himalayan glacierized catchments from Sentinel-2/Landsat imageries

    佐々木織江, MILES Evan S., PELLICCIOTTI Francesca, 坂井亜規子, 藤田耕史

    雪氷研究大会講演要旨集(Web)   2021   2021

  • ブータン王国の水力発電における気候変動と発電所増設による将来変化の推定

    石川こより, 土居慶祐, 佐々木織江, 鼎信次郎

    日本水文科学会学術大会発表要旨集   2021   2021

  • 中央ヨーロッパを対象とした熱収支氷河モデルによる氷河流出量の将来予測

    佐々木織江, 藤田耕史, 平林由希子, 鼎信次郎

    水文・水資源学会研究発表会要旨集(Web)   2019   2019

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Awards

  • 水工学論文奨励賞

    2018.10   土木学会 水工学委員会  

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Research Projects

  • Exploring water temperature variability in Asia through high-resolution satellite big data

    Grant number:24K00993  2024.4 - 2028.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\18460000 ( Direct Cost: \14200000 、 Indirect Cost:\4260000 )

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  • アジア水資源デジタルツインのための衛星ビッグデータとAIによる水面・積雪面変動抽出

    Grant number:23H01509  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    鼎 信次郎, 佐々木 織江, 平林 由希子, 吉川 沙耶花

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    Grant amount:\18720000 ( Direct Cost: \14400000 、 Indirect Cost:\4320000 )

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  • 全球山岳域における高解像度衛星を用いた積雪域の抽出および変動メカニズムの解明

    Grant number:23K13417  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  若手研究

    佐々木 織江

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    山岳域の積雪は下流地域にとって貴重な淡水源のひとつでありながら、その時空間的な分布が正確に把握されている地域は少ない。特に、ヒマラヤ山脈をはじめとするモンスーンアジアでは、夏に雲が多く衛星データからの積雪面積観測も困難である。そこで本研究では、雲被覆の影響を受けにくい雪線高度という指標を用いて、全球の積雪面積の推移と、変動要因を調べる。
    令和5年度は、気候の異なる5つの流域にターゲットを絞り、衛星データから自動で雪線高度を抽出する手法の開発を行った。異なる衛星を用いた場合の衛星間誤差を調べ、使用衛星を選定したところ、最長で1984年から現在までの雪線高度の推移を調査することが可能となった。時間解像度は使用できる衛星データの数に依存しており、衛星観測データの少ない1999年以前は年々変動が主な結果である。使用できる衛星が増加する1999年以降は、季節変動パターンの時系列変化を調べることが可能である。さらに、同期間の気象データや標高分布を用いた解析により、積雪の変動を促す要因を調査するための枠組みも整理した。これらの枠組みを5流域に適応した結果は、国際誌に投稿準備中であり、また、国際学会(9th GEWEX-OSC 2024)での発表を予定している。
    また、全球を対象とした大規模計算の準備として、計算環境の整備も行った。これらの成果により、次年度以降は全球での雪線抽出に集中して取り組む予定である。

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