2017 Fiscal Year Final Research Report
Investigation of state and fluctuation mechanisms of glaciers in high mountain Asia
Project/Area Number |
26257202
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 海外学術 |
Research Field |
Environmental dynamic analysis
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Research Institution | Nagoya University |
Principal Investigator |
Fujita Koji 名古屋大学, 環境学研究科, 准教授 (80303593)
|
Co-Investigator(Kenkyū-buntansha) |
福井 幸太郎 公益財団法人立山カルデラ砂防博物館, 学芸課, 学芸員 (10450165)
杉山 慎 北海道大学, 低温科学研究所, 教授 (20421951)
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Research Collaborator |
SAKAI Akiko 名古屋大学, 大学院環境学研究科, 研究員 (40437075)
Kayastha Ri jan B. Kathmandu University, Associate Professor
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Keywords | 氷河 / ヒマラヤ / 水資源 / リモートセンシング |
Outline of Final Research Achievements |
To better understand fluctuations and their mechanisms of large glaciers in high mountain Asia, we conducted in-situ observations in the Nepal and Bhutan Himalayas with analyses of remotely sensed satellite data and of numerical modelling. We developed a numerical model for debris-covered glaciers, in which distribution of debris thermal resistance was estimated with remotely sensed data as a proxy of debris thickness, and then ice melting was calculated by considering heat balance. By analyzing high resolution remotely sensed satellite data, we revealed mass changes in a couple of Himalayan glaciers. In addition, we compiled glacier inventory covering high mountain Asia, and then revealed areal changes in glaciers in the eastern Himalayas. We also revealed that debris-cover extent was highly correlated with upper glacier-free slope facing southwest at which diurnal freeze-thaw cycle could produce and supply debris material on glacier.
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Free Research Field |
氷河学
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