WAIS Ice Divide Migration

该奖项支持一个项目，使用机载冰穿透雷达和地形信息来绘制阿蒙森海和罗斯湾之间分水岭区域的内部分层图，以寻找分水岭迁移的证据。 如果坍塌已经进行了一段时间，它应该可以在分层的扭曲中被检测到。 该项目将利用航空地球物理研究支助办公室的双水獭飞机绘制跨越分水岭的冰沿着流动线的地图。 这些数据将与冰流模型一起用于推断冰分水岭的迁移历史，获得关于计划穿越路线上最近积累率的信息，并将为内陆西南极冰盖冰芯取样项目提供关于时间尺度和冰层厚度的重要信息。

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.