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Introduction of Geophysical observations during the 2016 Amundsen Sea cruise

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Title
Introduction of Geophysical observations during the 2016 Amundsen Sea cruise
Authors
Cho, Kyoung-Ho
Abrahamsen, E. Povl
Assmann, Karen
Chiche, Elin Darelius
Han, Hyangsun
Richter, Thomas
Wahlin, Anna K.
Kim, Tae-Wan
Lee, SangHoon
Keywords
Amundsen Sea cruise; ApRES; Getz Ice Shelf
Issue Date
2016
Citation
Cho, Kyoung-Ho, et al. 2016. Introduction of Geophysical observations during the 2016 Amundsen Sea cruise. Forum for Research into Ice Shelf Processes. Sweden. 2016.10.03.-06.
Abstract
During the 2016 Amundsen Sea cruise, we carried out geophysical surveys on the Getz Ice Shelf (GIS) in order to investigate the response of ice-shelf basal melt rates to changes in the underlying ocean. There were three activities performed during the cruise: autonomous phase-sensitive radio echo sounder (ApRES) deployments to measure ice-shelf basal melt rates, seismic surveys with geopebbles to determine the ice base and seabed depths for supporting the gravity survey, and helicopter gravity field observations to provide wide area estimates of water depth below ice shelves. The ApRES deployments and seismic experiments were performed at four sites on the western GIS and three two-hour helicopter gravimetry survey flights were flown over the GIS. These observation data will be used to analyze ice-shelf basal melt rates and insight into geological boundaries and structures in the Getz Ice Shelf region. Additionally, some methods of ice mass balance estimation using ApRES and satellite data will be introduced for the future research.
Conference Name
Forum for Research into Ice Shelf Processes
Conference Place
Sweden
Conference Date
2016.10.03.-06
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