Geologic Record of Late Wisconsinan/Holocene Ice Sheet Advance and Retreat from Ross Sea

威斯康星州晚期/全新世冰盖从罗斯海进退的地质记录

• 批准号: 9119683
• 负责人: John Anderson
• 金额: $ 76.18万
• 依托单位: William Marsh Rice 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: 1992-06-01 至 1997-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119683&HistoricalAwards=false
• 关键词: Geologic; Record; Late; Wisconsinan; Holocene

Marine geological and geophysical studies of the Ross Sea and Weddell Sea continental shelves provide evidence that the ice sheet grounded near the shelf edge in these areas during the late Wisconsinan, and that the retreat of the ice sheet to its present position was rapid and probably episodic. This Award supports a project which will establish the most recent (late Wisconsin- Holocene) history of ice sheet advance and retreat in Ross Sea. The objectives include: 1) reconstruction the late Wisconsin paleodrainage regime, including ice stream divides; 2) reconstruction of former grounding zone positions; 3) constraint of the timing of ice sheet retreat from the shelf; and 4) acquisition of geophysical, sedimentological, and paleontological data which may provide indicators the environmental factors that may have influenced to ice sheet retreat. This is a joint effort between Rice University, the University of Colorado, and Hamilton College. The project involves experts in a wide variety of fields, and will interface with glaciologists, physical oceanographers and climatologists who will address the problem of ice sheet stability and the record of climatic and glaciological change.

罗斯海海洋地质和地球物理研究， 威德尔海大陆架提供的证据表明 在这些地区的大陆架边缘附近着陆， 威斯康星州，冰盖退缩到现在， 位置是快速的，可能是间歇性的。 该奖项支持A 该项目将建立最近的（晚威斯康星州- 罗斯海冰盖进退的全新世历史。 其目标包括：1）重建晚期威斯康星州 古水系，包括冰流分水岭; 2） 原接地区位置的重建; 3）约束 冰盖从大陆架撤退的时间;以及4） 获取地球物理学、沉积学和古生物学 可提供指标的环境因素数据， 可能影响了冰盖的退缩。 这是一个共同的努力 莱斯大学、科罗拉多大学和汉密尔顿大学之间的 学院 该项目涉及各个领域的专家， 并将与冰川学家、物理海洋学家和 气候学家将致力于解决冰盖稳定性的问题 以及气候和冰川变化的记录。