Workshop on Antarctic Surface Hydrology and Future Ice-shelf Stability

南极地表水文学和未来冰架稳定性研讨会

• 批准号: 1743326
• 负责人: Jonathan Kingslake
• 金额: $ 4.01万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-15 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1743326&HistoricalAwards=false
• 关键词: Workshop; Antarctic; Surface; Hydrology; Future

Ice shelves are the floating portions of glaciers that terminate in the ocean. They are common around the periphery of Antarctica. The accumulation of surface meltwater on or near the surface of ice shelves can play a role in ice-shelf collapse, which leads to accelerated loss of grounded ice and sea-level rise. Recent studies have showed that present-day meltwater generation and movement across the surface of Antarctica is more widespread than previously thought and is expected to increase. Consequently, there is a growing need to address the role of surface water in forecasts of ice-shelf behavior. While much progress has been made, understanding of the role of water in ice-shelf collapse is still in its infancy. This award supports a workshop that will bring together experts from multiple disciplines that, together, can advance understanding of Antarctic surface hydrology and its role in the future stability of ice shelves. This workshop will bring together U.S. and international scientists with expertise in ice-sheet dynamics, glacial hydrology, climatology, and other disciplines to identify critical knowledge gaps and move the community towards answering fundamental questions such as: What climate dynamics are responsible for surface meltwater generation in Antarctica? What controls the spatiotemporal distribution of meltwater ponds on Antarctic ice shelves? Where is meltwater generated, where does it pond today, and how will this change this century? How will meltwater impact ice shelves? How will surface hydrology impact sea-level this century? The deliberations will be captured in a workshop report and review paper that will be broadly distributed.

冰架是终止于海洋的冰川的漂浮部分。 它们在南极洲周边地区很常见。 冰架表面或附近表面融水的积累可能会导致冰架崩塌，从而导致地面冰加速流失和海平面上升。最近的研究表明，目前南极洲表面融水的产生和移动比之前想象的更为广泛，并且预计还会增加。 因此，越来越需要解决地表水在冰架行为预测中的作用。尽管已经取得了很大进展，但对水在冰架崩塌中的作用的了解仍处于起步阶段。该奖项支持举办一个研讨会，该研讨会将汇集多个学科的专家，共同促进对南极表面水文及其在未来冰架稳定性中的作用的了解。 本次研讨会将汇集具有冰盖动力学、冰川水文学、气候学和其他学科专业知识的美国和国际科学家，以找出关键的知识差距，并推动社区回答一些基本问题，例如：什么气候动力学导致了地表融水的产生在南极洲？是什么控制着南极冰架融水池的时空分布？融水在哪里产生，今天在哪里积水，本世纪将如何改变？融水将如何影响冰架？本世纪地表水文将如何影响海平面？ 审议结果将记录在研讨会报告和审查文件中，并将广泛分发。