OCEAN STRUCTURE AND OCEAN HEAT FLUX UNDER FAST ICE IN LUTZOW-HOLM BAY,ANTARCTICA

南极卢措霍姆湾固冰下的海洋结构和海洋热通量

基本信息

批准号：
04640406
负责人：
KAWAMURA Toshiyuki
金额：
$ 1.09万
依托单位：
HOKKAIDO UNIVERSITY,INSTITUTE OF LOW TEMPERATURE SCIENCE
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04640406/
关键词：
POLAR OCEANOGRAPHY AIR-SEA INTERACTION OCEAN STRUCTURE OCEAN HEAT FLUX SEA ICE SUPERIMPOSED ICE MICROWAVE RADIOMETER SURFACE MELTING 極地海洋海洋構造

项目摘要

Accurate valuations of atmosphere-ocean interactions in the polar regions are essential for a right understanding of the climate variation. Although the collection of the observed data are strongly requested in wider area and longer period, field observations in the polar regions are restricted both spatially and seasonally. The Antarctic Climate Research Program was planned to evaluate the air-sea interactions by the Japanese Antarctic Research Expedition. Intensive studies were conducted between 1990 and 1992 in Lutzow-Holm Bay where the Syowa Station is located. The following results are obtained on ocean and sea-ice studies in the bay :(1) In the Antarctic coastal ocean, the thickness of the Winter Water becomes maximum in fall and minimum in summer.(2) It is proposed that the above seasonal variation is caused by the variation of Ekman convergence.(3) Flows under land-fast ice strongly depend on the location of the fast ice margin.(4) Snow depth and sea-ice thickness in the bay increases with distance from the continent.(5) Fast ice is controlled by extraordinary growth process : The sea ice shows little increase even in winter. However, in summer, an extreme upward growth was observed, to which snow cover contributes.(6) Microwave rediometer is useful to detect melting at the surface of snow/ice.(7) Microwave data reveal that sea ice distribution off the bay converges in summer.(8) Satellite images show that the polynya "Ohtone Suiro" is located on the extension of areas with low ice concentration from Cosmonant Polynya.

对极地区域中大气 - 海洋相互作用的准确估值对于正确理解气候变化至关重要。尽管在更广泛的区域和更长的时间内强烈要求收集观察到的数据，但极地区域的现场观测受到空间和季节性的限制。计划为日本南极研究探险队评估南极气候研究计划，以评估空气海上的相互作用。在1990年至1992年间，在Syowa站所在的Lutzow-Holm Bay进行了密集研究。在海湾的海洋和海冰研究中获得以下结果：（1）在南极沿海海洋中，冬季水的厚度在秋季和夏季最小的最小值。（2）提议，上述季节性变化是由Ekman融合的变化引起的。大陆。（5）快速冰由非凡的生长过程控制：即使在冬季，海冰也几乎没有增加。 However, in summer, an extreme upward growth was observed, to which snow cover contributes.(6) Microwave rediometer is useful to detect melting at the surface of snow/ice.(7) Microwave data reveal that sea ice distribution off the bay converges in summer.(8) Satellite images show that the polynya "Ohtone Suiro" is located on the extension of areas with low ice concentration from Cosmonant Polynya.