权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Observations of Sea Ice Features off Syowa Station, Antarctica, Derived from Mosaics of Satellite Remote Sensed Data

根据卫星遥感数据马赛克对南极洲昭和站附近海冰特征的观测

基本信息

批准号：
08640551
负责人：
ISHIDA Kunimitsu
金额：
$ 0.9万
依托单位：
Toba National College of Maritime Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640551/
关键词：
Satellite Remote Sensing NOS-1 MESSR Southern Ocean Sea Ice Coastal Polynya Ice Band Ice Streamer MOS-1 MESSR Ice Bands

项目摘要

MOS-1/lb data were received at Syowa Station from February 1989 to April 1996. During that period, considerable images of MESSR from 1,447 paths were obtained. In this study, we use these Quick look (QL) photos from February 1989 to January 1993. During that period, MESSR images from 669 paths were obtined. Among all these images, we selected the images from which sea ice can be seen. The selected images are approximately 2,300 images with 380 paths, which are about 6% of the total number of received images.In this study, meso-or submeso-scale features of the Antarctic sea ice are investigated using these images. The results are summarized as follows :(1) In the Antarctic ocean, ice bands can be often seen not only at ice edge but also in the ice interior zone throughout the year and they extend to hundreds of kilometers in latitudinal direction.(2) We found that the width and spacing of ice bands tend to decrease from winter to summer.(3) In coastal polynyas, ice streamers, which are composed of frazil ice and new ice, are sometimes observed.(4) In general, the row of the streamers is 1-2 orders larger than that of the Langmuir circulation.(5) In the melting season, the open water appeared in similar locations off Prince Olav Coast every year. It is speculated that these open water locations are related to the local bottom topography.(6) In general, ice motions in the coastal polynyas seem to be influenced by the local current.(7) Ice floes in the shore side of the polynya move faster than those in the offshore side.(8) The coastal polynya off Molodezhnaya Station appeared in the same location every year, with a similar pattern of the landfast ice edge.

从1989年2月至1996年4月在昭和站收到了MOS-1/lb数据。在此期间，从1 447条路径获得了大量MESSR图像。在这项研究中，我们使用这些快速查看（QL）的照片，从1989年2月至1993年1月。在此期间，获得了669条路径的MESSR图像。在所有这些图像中，我们选择了可以看到海冰的图像。选取了约2,300幅图像，其中380条路径，约占接收图像总数的6%，利用这些图像研究了南极海冰的中、亚中尺度特征。结果表明：（1）在南极海洋，冰带不仅在冰缘，而且在冰内区常年可见，在纬度方向上延伸达数百公里。(2)我们发现，冰带的宽度和间距有从冬季到夏季逐渐减小的趋势。(3)在沿海冰穴，有时会观察到由碎冰和新冰组成的冰带。(4)一般情况下，飘流的行比朗缪尔环流的行大1-2个数量级。(5)在融化季节，开放水域每年都出现在奥拉夫王子海岸附近的类似地点。据推测，这些开放水域的位置与当地的海底地形有关。(6)一般来说，冰在沿海冰穴的运动似乎受到当地水流的影响。(7)冰间湖海岸一侧的浮冰比离岸一侧的浮冰移动得更快。(8)Molodezhnaya站附近的沿海冰穴每年都出现在同一位置，具有类似的陆地固定冰边缘模式。