New thinking on water flow through glaciers
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چکیده
منابع مشابه
Rerouting of subglacial water flow between neighboring glaciers in West Greenland
Investigations of the Greenland ice sheet’s subglacial hydrological system show that the connectivity of different regions of the system influences how the glacier velocity responds to variations in surface melting. Here we examine whether subglacial water flow paths can be rerouted beneath three outlet glaciers in the ablation zone of western Greenland. We use Lamont-Doherty and Center for Rem...
متن کاملThe concept of glacier storage: a review
Glacier storage is a widely used term, applied to different processes and time-scales by different disciplines in hydrology and glaciology. We identify that storage occurs as ice, snow, and water associated with three time-scales. Long-term storage concerns storage of ice and firn as glaciers on time-scales of years to centuries and longer. This storage affects global sea level and long-term wa...
متن کاملDid changes in the Subpolar North Atlantic trigger the recent mass loss from the Greenland Ice Sheet?
The Greenland Ice Sheet's (GIS) contribution to sea level rise more than doubled in the last seven years due to a surprisingly rapid (and unpredicted) mass loss. The loss was not so much a result of increased surface melt but, rather, of ice loss due to the widespread and nearly-simultaneous acceleration of several outlet glaciers in Greenland’s western and southeastern sectors [Rignot and Kana...
متن کاملNew technique for access-borehole drilling in shelf glaciers using lightweight drills
This paper describes a new, environmentally friendly drilling technique for making shortand long-term access boreholes in shelf glaciers using lightweight drills. The new drilling technique was successfully developed for installation of small-diameter sensors under the Ross Ice Shelf through �193m thick ice at Windless Bight, McMurdo Ice Shelf, Antarctica. The two access boreholes were drilled ...
متن کاملOceanic heat transport onto the Amundsen Sea shelf through a submarine glacial trough
[1] Glaciers which drain the West Antarctic Ice Sheet (WAIS) into the Amundsen Sea are accelerating and thinning rapidly. These observations have been attributed to the regional oceanography whereby heat contained within Circumpolar Deep Water (CDW) drives the basal melting of floating glaciers. On the basis of new data we calculate that 2.8 terra-Watts (10) of oceanic heat flow onto the contin...
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تاریخ انتشار 2005