Processing and Interpretation of Vibroseismic Data from Ekström Ice Shelf, Antarctica 2011

• Main Author: Rose, Jens
• Format: Thesis
• Language: unknown
• Published: 2013
• Subjects: Dronning Maud Land; Ekstroem Ice Shelf; Ekström Ice Shelf; Antarc*; Antarctica; Ice Shelf; ice covered areas
• Online Access: https://epic.awi.de/id/eprint/36673/; https://epic.awi.de/id/eprint/36673/7/MasterThesis.pdf; https://hdl.handle.net/10013/epic.44460; https://hdl.handle.net/10013/epic.44460.d007

This thesis deals with processing and interpretation of data from a seismological survey, on Ekstroem Ice Shelf Dronning Maud Land, Antarctica. This data was obtained with a new approach: using a vibrator to generate spatial waves on ice, Vibroseismics. one advantage is that more energy is transmitted into the subsurface with a deeper penetration than the typically used explosives in firn/ice covered areas. Seismic surveys are indispensable for investigations with sub-ice glaciological and geological objectives. Two profiles were shot, one is passing a shear zone of two different ice flows and the grounding line, where ice shields slide into water and contribute to the sea level. The second profile shows the buildup of the continental basement and shelf sediments. An outstanding problem during processing of this data was the removal of multiple reflections. Attenuation of multiples was reached and seismic cross sections about two profiles which outline glaciological and geological important features are presented and interpreted.