Collaborative Research: Quantifying Glacier-Fjord-Ocean Interactions and their Impact on Changing Ice Discharge: Kangia Nunata Sermia and Other Outlets, West Greenland

合作研究：量化冰川-峡湾-海洋相互作用及其对冰量变化的影响：Kangia Nunata Sermia 和其他出口，西格陵兰

• 批准号: 0909333
• 负责人: Stephen Frolking
• 金额: $ 20.65万
• 依托单位: University of New Hampshire
• 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: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909333&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; Glacier; Fjord; Collaborative; Research; Quantifying; Glacier; Fjord

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This multidisciplinary proposal aims to improve understanding of ocean/glacier-ice interactions by linking oceanographic, glacier, and atmospheric measurements in a fjord/glacier system showing recent change to quantify processes occurring at this interface. The proposed work leverages and extends a substantive oceanographic investigation established as part of a Greenlandic-Danish IPY initiative, FRESHLINK, which attempts to assess the freshwater balance of the Godthåbsfjorden drainage in southwestern Greenland. This proposal adds tightly integrated glacier and inner-fjord components to this multidisciplinary effort. The specific goals are to 1) establish observations of glacier flow variability and patterns of change of the main glacier entering the fjord and quantify ice discharge on seasonal and annual time scales and relate these to fjord and off-shore oceanographic measurements; 2) quantify submarine melting at the calving terminus as a function of water temperature and glacial freshwater discharge; and 3) compare these results to other outlets and assess the implications for glacier-ice/ocean interaction on the scale of Greenland. The underlying assumption, that oceanographic forcing controls aspects of outlet glacier flow, is suggested in many areas of Greenland. Understanding recent outlet glacier retreat requires a study of the entire glacier-fjord-open ocean system. Such an integrated approach is the goal of this proposal. The combination of detailed seasonally-distributed oceanographic transects with measurements from moorings will allow quantification of marine melting of glacier ice as well as subglacial discharge. The suite of glaciological measurements will quantify the response of the glacier system as well as constrain surface melting. The satellite time series of the system, analyzed with the goal of finding remotely measurable characteristics that scale with the processes measured in situ, may allow extension to other fjords around Greenland.

该奖项是根据2009年的《美国回收与重新投资法》（公法111-5）资助的。该多学科提案旨在通过将海洋学，冰川和大气测量中的海洋/冰川测量在峡湾/冰川系统中联系起来，以提高对海洋/冰川冰的相互作用的理解，以显示最新变化的过程，以量化此界面的量化过程。拟议的工作利用并扩展了作为格陵兰式IPY倡议的一部分建立的实质性海洋学调查，该计划试图评估格陵兰西南部GodthåbsFjordenDrainage的淡水平衡。该建议为这项多学科的工作增加了紧密整合的冰川和内部峡湾组件。具体目标是1）建立冰川流量变异性和主冰川变化模式的观察结果，进入峡湾并在季节性和年度时间尺度上量化冰出排放，并将其与峡湾和离岸海洋学测量相关联； 2）定量在产犊末端熔化的海底熔化，这是水温和冰川淡水排放的函数； 3）将这些结果与其他媒体进行比较，并评估对格陵兰尺度上冰川冰/海洋相互作用的含义。在格陵兰许多地区，建议海洋学强迫控制出口冰川流的各个方面。了解最近的出口冰川静修需要研究整个冰川 - 峡湾开放的海洋系统。这种综合方法是该提议的目标。详细的海鲜分布海洋学样带与系泊测量的结合将允许量化冰川冰的海洋熔化以及冰山下排放。冰川测量值的套件将量化冰川系统的响应以及限制表面熔化。该系统的卫星时间序列进行了分析，其目的是找到可远程测量的特征，这些特征随着原位测量的过程扩展，可以延伸到格陵兰周围其他峡湾。