2017 Fiscal Year Final Research Report
Investigating the long-term variations and interactions among glaciers, glacial lakes, and high altitude wetlands in the tropical Andean region as future water resources
Project/Area Number |
15K18127
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Hydraulic engineering
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Research Institution | Public Works Research Institute |
Principal Investigator |
LIU TONG 国立研究開発法人土木研究所, 土木研究所(水災害・リスクマネジメント国際センター), 研究員 (10722316)
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Keywords | Hydrological modelling / Climate change / Water resources / Glacier / Remote sensing |
Outline of Final Research Achievements |
In the first stage (2015/4-12), methods of extracting glaciers, wetlands, and glacial lakes from Landsat data were established and validated with ALOS data and reflectance measurements. The second stage (2016/1-9) , the hydrological model IFAS was upgraded with snowmelt and evaporation functions. Water and energy budget analysis was done to validate the glaciermelt module. In the third stage (2016/10-2017/3), glaciers and glacial lakes were observed with shrinking and steady increasing trends in area (1986-2015). Snow/glacier-covered areas and wetlands were analyzed with size effect and environment forcing. In the last stage (2017/4-2018/3), an experiment as present climate (1979-2003) and 4 greenhouse gas emission scenarios (2075-2099) were input into the updated model with results in the previous stages to simulate runoff, glacier mass balance, and water budget. Resulted future predictions were compared with that in the past to evaluate climate change impacts on water resources.
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Free Research Field |
水文水環境
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