Sea floor depth under Ekström Ice Shelf, Antarctica, from seismic vibroseis surveys 2010-2018

• Main Authors: Smith, Emma Clare, Kuhn, Gerhard, Gaedicke, Christoph, Drews, Reinhard, Ehlers, Todd A, Franke, Dieter, Hofstede, Coen Matthijs, Lambrecht, Astrid, Läufer, Andreas, Mayer, Christoph, Tiedemann, Ralf, Eisen, Olaf
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Bathymetry; Bed elevation; Corrected for surface elevation using the REMA model; re-reference to the EIGEN6C4 Geoid; Ekström; Ekstrom_Ice_Shelf; Ekström Ice Shelf; ice shelf; LATITUDE; LONGITUDE; MULT; Multiple investigations; Number; seismic reflection; Sub-EIS-Obs; vibroseis; Antarc*; Antarctica; Ice Shelf
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.931928; https://doi.org/10.1594/PANGAEA.931928

Sea floor depth under Ekström Ice Shelf, Antarctica - from seismic reflection profiles collected between 2010 and 2018. For each seismic profile, the reflection time of the sea floor and ice-shelf base was identified and the depth to the sea floor was calculated using an ice velocity of 3601 m/s a sea-water velocity of 1451 m/s. The depths are referenced to mean sea-level (geoid EIGEN-6C4 ). The seismic data used here were collected using two different seismic vibroseis sources. The same snow streamer was used for all data acquisition - a 1500 m long, 60 channel snow streamer, with 25 m group spacing. Each group contains eight gimballed P-wave SM-4, 14 Hz geo-phones. Please note these data are the point data used to create the gridded bathymetry product of the region, found here: doi:10.1594/PANGAEA.907951 Details of data acquisition and processing are given here: doi:10.1029/2019GL086187.