Airborne Lithospher and Ice Cover Experiment ALICE: The Antarctic Rift System Examined with Corridor Aerogeophysics

空中岩石圈和冰盖实验 ALICE：用走廊航空地球物理学检查南极裂谷系统

• 批准号: 9120638
• 负责人: Robin Bell
• 金额: $ 24.51万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9120638&HistoricalAwards=false
• 关键词: Airborne; Lithospher; Ice; Cover; Experiment

Understanding the tectonic framework across the West Antarctic Rift system is critical for deciphering the evolution of the Pacific margin of Gondwana; for understanding the characteristics of wide and narrow modes of continental extension; and for determining the geological controls on the dynamics of the West Antarctic ice sheet, the globe's last great "marine" ice sheet. This award supports an integrated geophysical experiment including airborne radar and surface altimetry augmented by satellite imagery, in addition to airborne gravity and aeromagnetic measurements within a carefully chosen West Antarctic corridor. This corridor covers the western portion of the Byrd Subglacial Basin and the easternmost portion of the Interior Ross Embayment. The experimental objectives will be achieved by imaging the tectonic fabric across the West Antarctic Rift system and characterizing the distribution of sedimentary basins, volcanic rocks and important ice dynamical boundaries within this corridor.

了解西南极裂谷系统的构造框架对于破译冈瓦纳太平洋边缘的演化至关重要；了解大陆扩张的宽模式和窄模式的特征；并确定对南极西部冰盖（全球最后一个巨大的“海洋”冰盖）动力学的地质控制。 该奖项支持综合地球物理实验，包括通过卫星图像增强的机载雷达和表面测高，以及精心选择的西南极走廊内的机载重力和气磁测量。 该走廊覆盖伯德冰下盆地的西部部分和罗斯海湾内陆的最东部分。 实验目标将通过对西南极裂谷系统的构造结构进行成像并表征该走廊内沉积盆地、火山岩和重要冰动力边界的分布来实现。