| Project/Area Number |
26400460
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Hokkaido University |
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Principal Investigator |
MATOBA Sumito 北海道大学, 低温科学研究所, 助教 (30391163)
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| Research Collaborator |
IIZUKA Yoshinori
TSUSHIMA Akane
SASAKI Hirotaka
OYABU Ikumi
KADOYA Moe
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | アイスコア / 古環境 / 山岳氷河 / 水同位体 / 小氷期 / 黄砂 / アラスカ / グリーンランド / 古環境変動復元 / 気候変動 / 古気候復元 / 北部北太平洋 / カムチャツカ |
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| Outline of Final Research Achievements |
We have analyzed several ice cores obtained from alpine glaciers as Mt. Wrangell and Aurora Peak in Alaska, and shallow ice cores from northwestern and eastern Greenland Ice Sheet, which were newly drilled in 2014 and 2015, and reconstruct climate and environmental changes from the Little Ice Age (LIA) to present. From the late LIA to present, we found obvious climate shifts of air temperature and precipitation amount in 1700s and 1850s in both of Alaska and Greenland. The changes both of air temperature and precipitation showed seesaw relationship between Alaska and Greenland. We assume that the changes of air temperature and precipitation are associated with the shift of the route of the Jest Stream. In 1990s, we found an another climate shift. The variation tendencies of air temperature and precipitation are different from those before the climate shift.
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