Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"basal melting"”.
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Ocean mixing and heat transport beneath Antarctic ice shelves
Ocean-driven melting of floating ice shelves is currently the main process controlling Antarctica’s contribution to sea level rise. However, despite major advances in the study of ice shelf-ocean interaction over recent decades, key processes governing basal melting remain poorly understood, …
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Ice-ocean interactions beneath the north-western Ross Ice Shelf, Antarctica
Basal melting of ice shelves is causing accelerating mass loss from the Antarctic Ice Sheet, yet the oceanographic processes which drive this are rarely observed. This thesis uses new observations from phase sensitive radar and moored oceanographic instruments to describe the processes which drive …
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Investigating fast flow of the Greenland Ice Sheet
… ice flow and surface meltwater delivery to the basal environment. While supraglacial melt processes have been thoroughly examined and are well constrained, the response of the englacial and subglacial environment to these seasonal perturbations still represent the least-studied, understood, and …
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In situ temperature monitoring of the McMurdo Ice Shelf and ice shelf cavity by fiber-optic distributed temperature sensing
Ice shelf basal melt rates represent an important yet challenging to measure process. Basal melt rate measurements can assist to further understand ice-ocean interactions. In November 2011, two mooring containing fiber-optic cables for distributed temperature sensing (DTS) were installed at …
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Remote Sensing Studies of Svalbard Glaciers
… MHz radar equipment to sound ice at or near its melting point was tested over a number of glaciers in Spitsbergen. Ice thickness data were obtained from 38 glaciers. The results are compared with previous geophysical investigations of ice thickness on Spitsbergen, revealing problems concerning …
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Dyke-induced earthquakes during the 2014-15 Bárðarbunga-Holuhraun rifting event, Iceland
… of three ice cauldrons (depressions formed by basal melting) that were observed on the surface of Dyngjujökull glacier above the path of the dyke. Most events were in the vicinity of the northernmost cauldron, at shallower depth than the VTs associated with lateral dyke propagation. At the two …
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Evolving subglacial water systems in East Antarctica from airborne radar sounding
… model ice temperature, and determine absolute basal reflectivity for the entire region which covers over 28,000 square kilometers. The two largest subglacial lakes within the survey, Concordia and Vincennes, are both associated with enhanced basal melting on their upstream shores at rates …