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Collaborative Research: Glacier-Ocean Coupling In A Large East Greenland Fjord, Gordon S. Hamilton
Collaborative Research: Glacier-Ocean Coupling In A Large East Greenland Fjord, Gordon S. Hamilton
University of Maine Office of Research Administration: Grant Reports
This award will support a study of glacier-fjord interactions in east Greenland. The 'Intellectual Merit' of the proposed study lies in the current understanding that the contribution of the Greenland Ice Sheet to sea level rise more than doubled in the last seven years, mostly because of a widespread and nearly simultaneous acceleration of many glaciers that terminate at tidewater in deep fjords. Understanding the causes of changes in glacier dynamics, and predicting their future trajectories is a topic of enormous scientific and societal importance. The Greenland fjords provide an intimate connection between the ice sheet and the ocean and, …
Collaborative Research: High-Resolution Studies Of Glacier Dynamics At Two Major Outlet Glaciers In East Greenland, Gordon S. Hamilton
Collaborative Research: High-Resolution Studies Of Glacier Dynamics At Two Major Outlet Glaciers In East Greenland, Gordon S. Hamilton
University of Maine Office of Research Administration: Grant Reports
The Principal Investigators request support for an interdisciplinary, high-resolution study involving remote sensing and field investigations at two of Greenland's largest outlet glaciers. The study of the Helheim and Kangerdlugssuaq Glaciers will integrate seismological, glaciological, and geodetic observations to build an understanding of flow dynamics at major outlet glaciers, which represent a critical junction between the atmosphere, cryosphere, and hydrosphere. The project would be the first long-term occupation of an outlet glacier by a GPS receiver network, and would address questions of flow variation on earthquake to interannual time scales. Recent discoveries have made it clear that our understanding of …
Interpretation Of The High Resolution, Multivariate Mt. Logan (Yukon Territory) Ice Core - A Record Of North Pacific Climate And Atmospheric Chemistry, Paul Andrew Mayewski
Interpretation Of The High Resolution, Multivariate Mt. Logan (Yukon Territory) Ice Core - A Record Of North Pacific Climate And Atmospheric Chemistry, Paul Andrew Mayewski
University of Maine Office of Research Administration: Grant Reports
The recently developed Mt. Logan ice core glaciochemical dataset provides an unprecedented opportunity to understand Holocene climate change and the sources and fluxes of natural and anthropogenic chemicals in the North Pacific atmosphere. The 185 m-long ice core has been sampled at very high resolution using a refined and updated continuous ice core melter system, and analyzed for over 40 chemical species, including major ions, trace elements, rare earth elements, and stable isotopes. Subseasonal samples spanning the top ~500 years allow for annual layer counting, followed by ice flow modeling for the remainder of the timescale spanning the Holocene and …
Satellite Remote Sensing Of Glaciers And Ice Caps In Svalbard, Eurasian High Arctic, Gordon S. Hamilton
Satellite Remote Sensing Of Glaciers And Ice Caps In Svalbard, Eurasian High Arctic, Gordon S. Hamilton
University of Maine Office of Research Administration: Grant Reports
Recent compilations of climate-related observations show that important changes are now underway in the High Arctic, probably as a response to anthropogenic greenhouse gas emissions over the last approximately 250 years. These changes include warming of the troposphere, reductions in sea ice cover, decreases in snow cover area, warming of tundra permafrost, and negative mass balances of glaciers and ice caps. In many instances, observations of change are relatively short in duration or sparse in spatial extent. The Principal Investigators will study glacier and ice cap variations over the approximately last 80 years and at a large scale on Svalbard. …