WAIS Ice Divide Migration

WAIS 冰分水岭迁移

• 批准号: 9726500
• 负责人: Donald Blankenship
• 金额: $ 15.74万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726500&HistoricalAwards=false
• 关键词: WAIS; Ice; Divide; Migration

This award supports a project to use airborne ice penetrating radar and topographic information to map internal layering of the divide zone between the Amundsen Sea and Ross Embayment to search for evidence of divide migration. If collapse has been in progress for some time, it should be detectable in distortions of the layering. The project will use the Support Office for Aerogeophysical Research (SOAR) Twin Otter aircraft to map the ice along flow lines which cross the divide. The data will be used together with ice flow models to infer an ice divide migration history, obtain information about recent accumulation rate over planned traverse routes and will provide important information on time scale and layer thickness for the inland West Antarctic ice sheet ice coring project.

该奖项支持一个项目，利用机载探冰雷达和地形信息来绘制阿蒙森海和罗斯海湾之间分水岭的内部分层图，以寻找分水岭迁移的证据。 如果塌陷已经进行了一段时间，则应该可以在分层的扭曲中检测到。 该项目将使用航空地球物理研究支持办公室（SOAR）双水獭飞机沿着跨越分水岭的流线绘制冰图。 这些数据将与冰流模型结合使用，推断冰分流迁移历史，获取计划穿越路线的近期累积速率信息，并将为南极西部内陆冰盖冰芯项目提供时间尺度和冰层厚度的重要信息。