The bedrock topography of Starbuck Glacier, Antarctic Peninsula, as determined by radio-echo soundings and flow modeling

Farinotti, Daniel, King, Edward, Albrecht, Anika, Huss, Matthias and Gudmundsson, Hilmar (2014) The bedrock topography of Starbuck Glacier, Antarctic Peninsula, as determined by radio-echo soundings and flow modeling. Annals of Glaciology, 55 (67). pp. 22-28. ISSN 0260-3055

Full text not available from this repository.

Abstract

A glacier-wide ice-thickness distribution and bedrock topography is presented for Starbuck Glacier, Antarctic Peninsula. The results are based on 90km of ground-based radio-echo sounding lines collected during the 2012/13 field season. Cross-validation with ice-thickness measurements provided by NASA's IceBridge project reveals excellent agreement. Glacier-wide estimates are derived using a model that calculates distributed ice thickness, calibrated with the radio-echo soundings. Additional constraints are obtained from in situ ice flow-speed measurements and the surface topography. The results indicate a reverse-sloped bed extending from a riegel occurring ̃5km upstream of the current grounding line. The deepest parts of the glacier are as much as 500m below sea level. The calculated total volume of 80.7±7.2km3 corresponds to an average ice thickness of 312±30 m.

Item Type:	Article
Subjects:	F800 Physical and Terrestrial Geographical and Environmental Sciences
Department:	Faculties > Engineering and Environment > Geography and Environmental Sciences
Related URLs:	Organisation
Depositing User:	Paul Burns
Date Deposited:	12 Jul 2018 10:37
Last Modified:	11 Oct 2019 14:16
URI:	http://nrl.northumbria.ac.uk/id/eprint/34957

Downloads