2007 Fiscal Year Final Research Report Summary
Direct evaluation of sea-ice production in the Sea of Okhotsk based on in sites ice-thickness observations
| Project/Area Number |
17540405
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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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 |
FUKAMACHI Yasushi Hokkaido University, Institute of Low Temperature Science, Assi. Prof. (20250508)
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| Project Period (FY) |
2005 – 2007
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| Keywords | sea ice / ice thickness / mooring observation / The Sea of Okhotsk |
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| Research Abstract |
Sea-ice mooring data obtained off Yubetsu in the Hokkaido coastal region during the winters of 1999-2001 revealed the mean draft of 0.60m and the high deformed ice ratio of 80%. These results were published in Fukamachi et al. (2006, Journal of Geophysical Research). Also, sea-ice mooring data obtained off Mombetsu during the winter of 2005-06 along with the sediment-trap data collected by the National Institute for Environmental Studies indicated that the quality and quantity of sinking biogenic and lithogenic materials varied with the sea-ice cover. These results were published in Hiwatari et al. (2008, Polar Science).
Sea-ice and oceanic mooring data obtained off the northern Sakhalin during the winter of 2002-03 were analyzed. These data revealed that the mean draft (1.05m) was significantly larger than that off Hokkaido, periods of thin- (<0.2m) and thick-ice (>5m) occurred with offshore and onshore sea-ice velocities, sea-water salinity increased during the thin-ice periods resulting the production of dense shelf water with potential density exceeding 26.7, the observed water-salinity increase is well explained by the brine rejection associated with sea-ice production based on the heat-flux calculation among the atmosphere, sea ice, and ocean. These results were summarized in Fukamachi et al. submitted to Continental Shelf Research.
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Research Products
(25 results)
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[Presentation] オホーツク海サハリン北部沖における海氷厚の係留観測2008
Author(s)
深町康, 白澤邦男, 大島慶一郎, Anatoliy Polomoshnov, Ervin Kalinin, Humfrey Melling, 水田元太, 若土正暁
Organizer
2008年度日本海洋学会春季大会
Place of Presentation
東京・東京海洋大学
Year and Date
2008-03-27
Description
「研究成果報告書概要(和文)」より
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