Collaborative Research: Atmosphere-Ice-Ocean Interactions in the Eastern Ross Sea

合作研究：东罗斯海的大气-冰-海洋相互作用

• 批准号: 0839005
• 负责人: Alejandro Orsi
• 金额: $ 38.85万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0839005&HistoricalAwards=false
• 关键词: Collaborative; Research; Atmosphere; Ice; Ocean

Abstract"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."A postulated key factor in controlling the future fate of the West Antarctic Ice Sheet, for instance in the area of the Amundsen Sea embayment, is the extent to which warm Circumpolar Deep Water (CDW) intrusions may flow up onto the continental shelf and towards the base of the region's large floating ice shelves. Scenarios for a warming global climate, and a warmer Southern Ocean, indicate an increased shelfward heat transport resulting in aggressive basal melting of these large buttressing ice shelves. This possibly could lead to subsequent rapid acceleration of grounded, continental glacial flow into the ocean. As of yet, such CDW intrusions have not been observed directly adjacent to the massive Ross Ice Shelf to the west of the Amundsen. This project seeks an accounting of circulation features leading to increased (or not) net poleward intrusion of CDW into the Eastern Ross Sea region (Cape Colbeck, Edward VII peninsula) and under the Ross Ice Shelf, the largest ice shelf on the continent. By using standard current moorings, along with CTD and XBT casts made from aboard the RVIB Oden, observation of the occurrence of this water mass will be undertaken.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“据推测，控制西南极冰盖未来命运的一个关键因素，例如在阿蒙森海海湾地区，是温暖的绕极深水（CDW）侵入物向上流入大陆架和该地区大型浮冰架底部的程度。全球气候变暖和南大洋变暖的情景表明，向冰架的热量输送增加，导致这些大型支撑冰架的基底融化。这可能会导致随后快速加速陆地冰川流入海洋。到目前为止，在阿蒙森以西的巨大罗斯冰架附近还没有观察到这样的CDW侵入体。该项目旨在对导致CDW向极侵入东罗斯海地区（爱德华七世半岛科尔贝克角）和罗斯冰架（该大陆最大的冰架）下的净侵入增加（或不增加）的环流特征进行核算。通过使用标准海流系泊，沿着CTD和XBT铸件（由RVIB Oden船上制成），将对该水团的出现进行观测。