1999 Fiscal Year Final Research Report Summary
STUDIES ON EFFECTS OF THE ARCTIC CRYOSPHERE ON GLOBAL CHANGE
| Project/Area Number |
10041130
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
WATANABE Okitsugu National Institute of Polar Research Division of Research, Professor, 研究系, 教授 (60111861)
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| Co-Investigator(Kenkyū-buntansha) |
MOTOYAMA Hideaki National Institute of Polar Research, Division of Research, Associate Professor, 研究系, 助教授 (20210099)
KAMIYAMA Kokichi National Institute of Polar Research, Division of Research, Professor, 研究系, 教授 (70135507)
FUJII Yoshiyuki National Institute of Polar Research, Arctic Environment Research Center, Professor, 北極圏環境研究センター, 教授 (20125214)
SHOJI Hitoshi Kitami Institute of Technology, Department of Engineering, Professor, 工学部, 教授 (50201562)
AZUMA Kumiko National Institute of Polar Research, Division of Research, Associate Professor, 研究系, 助教授 (80202620)
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| Project Period (FY) |
1998 – 1999
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| Keywords | GLOBAL CHANGE / ARCTIC CRYOSPHERE / ICE CORE / REGIONAL SNOW CHARACTERISTICS |
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| Research Abstract |
1. A 289m deep ice core was drilled on Austfonna, Svalbard under the collaboration with Norway and France. The core was analyzed for ECM, stable oxygen isotope, and ions. The core records the climatic and environmental changes over the past 700 years. Stable isotope variations indicate that there was a cold period from 1780 to 1920 in Svalbard, and that rapid warming took place in 1920s. On the other hand, ECM analyses show the signals of global scale volcanic eruptions such as Laki and Hekla.
2. Drill test and glaciological observations were carried out on Devon Ice Cap, Canadian Arctic under the collaboration with the Geological Survey of Canada. Samples from multiple snow pits on Devon Ice Cap were analyzed for ions. The results show that concentrations of sea salts, formic acid, and calcium decrease rapidly with altitude, and that concentration of MSA does not depend on altitude.
3. Under the collaboration with Hunan Normal University, China, sruface snow samples were collected on a glacier in the East Kunlun Mountains. The samples were brought back to Japan and analyzed for chemistry.
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