Understanding the process of dark ice expansion on glaciers in the Arctic region
| Project/Area Number |
15K16120
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
Nagatsuka Naoko 国立極地研究所, 研究教育系, 研究員 (30733208)
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| Research Collaborator |
Mateiu Ramona
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 氷床・氷河の暗色化 / 氷床・氷河上の不純物 / 氷床．氷河融解 / 黒色炭素 / 北極 / グリーンランド / Sr-Nd同位体比 / 積雪中の黒色炭素 / 氷河暗色化 / クリオコナイト / 走査型電子顕微鏡 / 氷河上ダストの起源 / 積雪中の黒色炭素の形態観察 / 北極域の氷河暗色化 / 黒色炭素（ブラックカーボン）の形態観察 |
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| Outline of Final Research Achievements |
In order to better understand the dark ice expansion on glaciers in the Arctic, we analyzed dark-colored surface dust (minerals and glacial microbes) and black carbon.
Based on our analysis, a major contributor to the dark ice surface of glaciers in northwestern Greenland is likely to be minerals derived from surrounding moraines and englacial dust that was deposited in the past in the accumulation area, traveled through the ice sheet, and outcropped again in the ablation zone, which can accelerate glacial melting by reducing the surface albedo.
Furthermore, the Scanning Electron Microscope analysis revealed that there are spatial variations in the morphology of black carbon in the Arctic snow, which can effect on theri light absorption, showed large variation among the region.
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Report
(4 results)
Research Products
(16 results)
