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Direct evaluation of sea-ice production in the Sea of Okhotsk based on in sites ice-thickness observations

基于现场冰厚观测直接评估鄂霍次克海海冰生成

基本信息

批准号：
17540405
负责人：
FUKAMACHI Yasushi
金额：
$ 2.41万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

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.

1999-2001年冬季，在北海道近海余别津附近海域获得的海冰系泊数据显示，平均吃水0.60m，高变形冰率为80%。这些结果发表在Fukamachi等人的杂志上。(2006，《地球物理研究杂志》)。此外，2005-2006年冬季在蒙贝苏岛附近获得的海冰系泊数据以及国家环境研究所收集的沉积物捕集器数据表明，下沉的生物成因和岩石成因物质的质量和数量随着海冰覆盖的不同而不同。这些结果发表在Hiwatari等人的杂志上。(2008，极地科学)。分析了2002-03年冬季库页岛北部海冰和海洋系泊数据。这些数据表明，平均吃水(1.05m)明显大于北海道附近，近岸和岸上海冰速度出现了薄冰(&lt；0.2m)和厚冰(&gt；5m)的周期，薄冰期海水含盐量增加，产生了势密度超过26.7的致密陆架水，根据大气、海冰和海洋之间的热通量计算，与海冰产生相关的卤水排斥很好地解释了观测到的水盐度增加。这些结果在Fukamachi等人的文章中进行了总结。提交给大陆架研究中心。