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Hofstede, Coen Matthijs; Beyer, Sebastian; Corr, Hugh F J; Eisen, Olaf; Hattermann, Tore; Helm, Veit; Neckel, Niklas; Smith, Emma Clare; Steinhage, Daniel; Zeising, Ole; Humbert, Angelika (2021): Seismic reflection data of a basal channel and ocean cavity at the ice shelf-grounding line area of Support Force Glacier, Filchner Ice Shelf, Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.932278

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Abstract:
Support Force Glacier (SFG) is a large ice stream feeding into the Filchner Ice Shelf. The active seismic survey is recorded at the sheet-shelf transition of SFG. We map the bed while grounded, the ocean cavity around a surface channel at the ice shelf and its counterpart at the base, the basal channel, and the seabed. The survey consists of 5 seismic reflection profiles, 2 along-flow profiles and 3 across-flow profiles.
The 2.42GB seismic data were recorded with a 300 m long streamer consisting of 96 30Hz p-wave sensors. The sample rate is 0.5 ms, record length 3000 ms. The data is single fold, shot spacing is 150 m:
line name: profile TC paper: direction: #shots:
- 20170501 profile I along-flow 291 shots
- 20170502 profile III across-flow 28 shots
- 20170503 profile II along-flow 71 shots
- 20170504 profile IV across-flow 40 shots
- 20170506 profile V across-flow 50 shots
Presented are for each line (20170501 used as example):
- The raw shots: 20170501_RAW_SHOTS_EDITS_GEOM.segy
- The Kirchhoff migrated and depth converted profiles: 20170501stat_TXmig_Zconv.segy
- The shot x,y,z coordinates in longitude, latitude and surface height in meters above sea level (z, WGS84 ellipsoid): 20170501_GPS.txt
Keyword(s):
Ice-shelf Channels
Supplement to:
Hofstede, Coen Matthijs; Beyer, Sebastian; Corr, Hugh F J; Eisen, Olaf; Hattermann, Tore; Helm, Veit; Neckel, Niklas; Smith, Emma Clare; Steinhage, Daniel; Zeising, Ole; Humbert, Angelika (2021): Evidence for a grounding line fan at the onset of a basal channel under the ice shelf of Support Force Glacier, Antarctica, revealed by reflection seismics. The Cryosphere, 15(3), 1517-1535, https://doi.org/10.5194/tc-15-1517-2021
Project(s):
Coverage:
Median Latitude: -82.348115 * Median Longitude: -45.750943 * South-bound Latitude: -82.523972 * West-bound Longitude: -46.036579 * North-bound Latitude: -82.136833 * East-bound Longitude: -45.277187
Date/Time Start: 2017-01-01T00:00:00 * Date/Time End: 2017-01-06T00:00:00
Minimum Elevation: 125.6 m * Maximum Elevation: 177.3 m
Event(s):
FISP_2016-2017_20170501 (profile I) * Latitude Start: -82.523972 * Longitude Start: -45.977394 * Latitude End: -82.136833 * Longitude End: -45.337067 * Date/Time: 2017-01-01T00:00:00 * Elevation Start: 177.3 m * Elevation End: 126.5 m * Campaign: ANT-Land_2016/17_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Snow streamer (SSTREAM) * Comment: along-flow, 291 shots, shot 29 missing, bad data
FISP_2016-2017_20170502 (profile III) * Latitude Start: -82.442544 * Longitude Start: -45.762993 * Latitude End: -82.433578 * Longitude End: -46.036579 * Date/Time: 2017-01-02T00:00:00 * Elevation Start: 137.7 m * Elevation End: 145.4 m * Campaign: ANT-Land_2016/17_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Snow streamer (SSTREAM) * Comment: across-flow, 28 shots
FISP_2016-2017_20170503 (profile II) * Latitude Start: -82.377006 * Longitude Start: -45.815441 * Latitude End: -82.470390 * Longitude End: -45.993137 * Date/Time: 2017-01-03T00:00:00 * Elevation Start: 125.6 m * Elevation End: 135.8 m * Campaign: ANT-Land_2016/17_FISP * Basis: AWI Antarctic Land Expedition * Method/Device: Snow streamer (SSTREAM) * Comment: along-flow, 71 shots
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventHofstede, Coen Matthijs
2File contentContentHofstede, Coen Matthijs
3Binary ObjectBinaryHofstede, Coen Matthijs300 m snow streamer with 96 gimballed 30 Hz vertical compressional wave (P-wave) sensors
4Binary Object (File Size)Binary (Size)BytesHofstede, Coen Matthijs300 m snow streamer with 96 gimballed 30 Hz vertical compressional wave (P-wave) sensors
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
54 data points

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