Collaborative Research: Developing New Science and Technology for Subglacial Studies of the Whillans Ice Plain and West Antarctic Ice Sheet

合作研究：为威兰斯冰原和西南极冰盖的冰下研究开发新科学技术

• 批准号: 1346249
• 负责人: David Harwood
• 金额: $ 57.68万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1346249&HistoricalAwards=false
• 关键词: Collaborative; Research; Developing; New; Science

Collaborative Research: Developing New Science and Technology for Subglacial Studies of the Whillans Ice Plain and West Antarctic Ice Sheet is supported by the Antarctic Integrated System Science (AISS) program in the Antarctic Sciences Section of the Division of Polar Programs within the Geosciences Directorate of the National Sciences Foundation (NSF). The funds will support the design, construction, and deployment of a roving hot water drill and basal ice coring equipment to be deployed in conjunction with the WISSARD (Whillans Ice Stream Subglacial Access and Research Drilling) project during the 2013/2014 field season. The roving hot water drill will be deployed at up to two locations in each of two sites: in the vicinity of Subglacial Lake Whillans, and at the grounding line where the drainage from Subglacial Lake Whillans empties into the sub-ice shelf cavity. The ice coring equipment will only be used at the grounding line location. All locations are at the edge of the Ross Ice Shelf, connected to the West Antarctic Ice Sheet (WAIS).Intellectual Merit: The new equipment will be used to augment two on-going projects occurring in the Whillans Ice Stream area, WISSARD, that focuses on understanding the biology, geochemistry, paleogeology, and hydrological/glaciological interactions of the Whillans Subglacial system, and a second project focused on the micro-earthquakes associated with the sticky spots found in the Whillans area. The basal ice corer will add significant data to the WISSARD project, and the roving drill will provide access holes to insert within glacial seismometers that will allow a much better understanding of the micro-earthquakes. The within glacial seismometers will build on the collection of surface seismic data from 2012-13 that are characterized by repeated high frequency events interpreted as basal earthquakes. These earthquake events were not detectable at stations only 20 km away, so obtaining a better understanding of these physical mechanisms will be very useful for understanding basal ice motion and friction.Broader Impacts: In addition to the contributions to the understanding of ice dynamics mentioned above, future availability of a roving hot water drill system and related coring capabilities will result in increased research opportunities for researchers from a range of disciplines interested in the interface between the base of the ice sheets and the underlying substrate. The project will also support the development of the US's technical expertise in hot water drilling. Finally, the project will provide further funding of the public outreach and education started by the WISSARD project. The WISSARD outreach and education activities have been exceptional to date, and it is expected that additional activities enabled by this new award will be exceptional as well.

合作研究：开发新的科学技术，以用于对Whillans Ice Plain和西南极冰盖的亚冰层研究，并得到南极综合系统科学（AISS）计划在“国家科学基金会”地球科学局（NSF）（NSF）的南极科学部门（AISS）计划。 这些资金将在2013/2014实地​​季节期间支持与Wissard（Whillans Ice Stream冰流冰河通道和研究钻探）一起部署的巡回热水钻和基础冰芯设备的设计，建造和部署。在两个地点的每个地点，巡回的热水钻最多将在两个地点部署：在冰山下湖水附近，在地面线上，从冰川湖亚冰湖中排水排放到亚冰架腔中。冰芯设备仅在接地线位置使用。 All locations are at the edge of the Ross Ice Shelf, connected to the West Antarctic Ice Sheet (WAIS).Intellectual Merit: The new equipment will be used to augment two on-going projects occurring in the Whillans Ice Stream area, WISSARD, that focuses on understanding the biology, geochemistry, paleogeology, and hydrological/glaciological interactions of the Whillans Subglacial system, and a second project focused on the与在Whillans区域发现的粘性斑点相关的微地震。 基础冰芯将在Wissard项目中添加重要数据，巡回演习将提供访问孔，以插入冰川地震米中，这将使对微观地球的了解更加了解。冰川内的地震米将基于2012 - 13年度表面地震数据的收集，其特征是重复的高频事件被解释为基础地震。这些地震事件在仅20公里远的站点无法检测到，因此对这些物理机制有更好的理解将非常有用，可用于理解基础冰的运动和摩擦。BROADER的影响：除了对上述冰动力学的理解的贡献外，对ROV的未来对热水系统和相关的cor练习能力的ROV的可用性将导致研究范围的研究范围，从而使研究人员的界限范围内的范围以及范围内的范围，这些范围的范围是，该范围的范围是，该范围的范围是，该范围的范围是，这些范围的范围是，界限的范围是she范围的范围。基础基板。该项目还将支持美国在热水钻探方面的技术专业知识的发展。最后，该项目将为Wissard Project创立的公众推广和教育提供进一步的资金。 迄今为止，Wissard宣传和教育活动非常出色，预计该新奖项启用的其他活动也将是非凡的。