Evaluation of the effect of variation in the end of ice sheet on the dynamical behavior of drainage basin, Antarctica

冰盖末端变化对南极流域动力学行为影响的评估

基本信息

批准号：
15310017
负责人：
FURUKAWA Teruo
金额：
$ 6.21万
依托单位：
National Institute of Polar Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310017/
关键词：
Synthetic Aperture Radar(SAR)Antarctica ice sheet the end of ice sheet global climatic change change in ice sheet Geographic Information System (GIS)

项目摘要

It is important to reveal the variation in ice mass of the Antarctic ice sheet caused by global climatic change. The objective of this project is to reveal the effect of variation in the end of ice sheet on the dynamical behavior of drainage basin in Antarctic ice sheet. Japanese Antarctic Research Expeditions (JAREs) have collected the ground data on surface topography, bedrock topography, surface snow conditions and surface mass balance in the Shirase drainage basin of which summit of the ice sheet (Dome Fuji). The dynamical behavior of Shirase Glacier is very important to understand the response of the Shirase drainage basin to global climatic change. It is difficult to approach Shirase Glacier because of the existence of many crevasses. It is possible to collect various information of the glacier using Synthetic Aperture Radar (SAM).In order to investigate the effect of variation of the end of ice sheet on the dynamical behavior of drainage basin in Antarctica, the analysis system was built using Geographic Information System (GIS). It is possible to compare ground observation data such as surface topography, snow surface conditions and surface mass balance with image data by Synthetic Aperture Radar (SAR). And to reveal the mechanism of ice sheet change, the analysis of multi frequencies radio echo sounding observation data on the internal structure of the ice sheet.

揭示全球气候变化引起的南极冰盖冰量变化具有重要意义。该项目的目的是揭示冰盖末端的变化对南极冰盖流域盆地动力学行为的影响。日本南极科考队（JARE）收集了冰盖山顶（圆顶富士）白濑流域的地表地形、基岩地形、地表积雪状况和地表物质平衡等地面数据。白濑冰川的动力学行为对于了解白濑流域对全球气候变化的响应非常重要。由于存在许多裂缝，接近白濑冰川非常困难。利用合成孔径雷达(SAM)可以收集冰川的各种信息。为了研究冰盖末端变化对南极流域动力学行为的影响，建立了地理信息分析系统系统（地理信息系统）。可以将地面观测数据（例如地表地形、雪面状况和地表质量平衡）与合成孔径雷达（SAR）的图像数据进行比较。并通过对冰盖内部结构的多频无线电回波测深观测数据的分析，揭示冰盖变化的机理。