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Reflexionsseismische Datenanalyse des Russell-Gletschers, Grönland = Reflection Seismic Data Analysis of Russell Glacier, Greenland

Heller, Betty

Abstract:
Modelling the glacier dynamics of the Greenland Ice Sheet is a central part of climate research. To be able to model the processes that influence a glacier’s flow, the position of its ice-bed contact is a basal boundary condition. Using five different P-wave reflection seismic datasets, the subsurface structure of Russell Glacier, which is a land-terminating glacier in southwest Greenland, is inves- tigated. The data have been recorded by the glaciology group of the Alfred-Wegener Institute, in the ablation zone of Russell Glacier. To investigate the efficiency of the minivibrator source ELVIS III on polar glaciers having ice thicknesses up to several kilometers, a dataset using the ELVIS source is compared to an equivalent explosive seismic dataset. The question to answer is, if the approximately 600 m deep glacier bed and additional subglacial structures are displayed by the vibroseis data. As the maximally 10-fold vibroseis data, in contrast to the maximally 2-fold ex- plosive seismic data, don’t reveal any reflection signals, it is concluded that the penetration depth of the ELVIS signal is too small to resolve subglac ... mehr


Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Publikationstyp Hochschulschrift
Jahr 2016
Sprache Englisch
Identifikator DOI(KIT): 10.5445/IR/1000063865
URN: urn:nbn:de:swb:90-638650
KITopen ID: 1000063865
Umfang 68 S.
Abschlussart Abschlussarbeit - Bachelor
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