Abstract:
Seismic refraction experiments were conducted in eight locations along a flowline originating in the Cabinet Inlet, Larsen C Ice Shelf, with the main purpose of estimating firn density profiles. The data were collected as part of NERC Project MIDAS.
Funding was provided by NERC Standard Grant 'Impact of surface melt and ponding on ice shelf dynamics and stability', 2014-2017, NERC Reference NE/L005409/1.
Keywords:
Antarctic Peninsula, Cabinet Inlet, Larsen C Ice Shelf, Seismic Refraction
Kulessa, B., & Bevan, S. (2019). Seismic refraction data, Antarctic Peninsula, Larsen C Ice Shelf, Cabinet Inlet, November-December 2014 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/fff8afee-4978-495e-9210-120872983a8d
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2019-10-09 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Bernd Kulessa |
| Role(s) | Investigator, Technical Contact |
| Organisation | Swansea University |
| Name | Suzanne Bevan |
| Role(s) | Investigator |
| Organisation | Swansea University |
| Parent Dataset: | N/A |
| Reference: | Brisbourne, A., Kulessa, B., Hudson, T., Harrison, L., Holland, P., Luckman, A., Bevan, S., Ashmore, D., Hubbard, B., Pearce, E., White, J., Booth, A., Nicholls, K., and Smith, A.: An updated seabed bathymetry beneath Larsen C Ice Shelf, Antarctic Peninsula, Earth Syst. Sci. Data, 12, 887-896, https://doi.org/10.5194/essd-12-887-2020, 2020. | |
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| Quality: | Raw data are provided and data quality can therefore be readily assessed. Selected bad traces have been removed in assembling the .sgy files, caused by faulty take-outs in the seismic cable used. | |
| Lineage: | The seismic refraction data were collected with a 14 lb sledgehammer and plastic plate seismic source, using the instrumentation specified below, to create 'walk-away' shot gathers. The seismic lines of shot and geophones are aligned with the ice-shelf flow direction, i.e. aligned along a flowline originating from the Cabinet Inlet. No reverse shots were recorded because the firn was layered and laterally homogeneous in each location. | |
| Temporal Coverage: | |
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| Start Date | 2014-11-01 |
| End Date | 2014-12-31 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -63.376 |
| Northernmost | -61.481 |
| Longitude | |
| Westernmost | -67 |
| Easternmost | -66.402 |
| Altitude | |
| Min Altitude | 47.206 m |
| Max Altitude | 79.391 m |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Cabinet Inlet, Larsen C Ice Shelf |
| Data Collection: | 2 x Geometrics Geode seismographs with 100 Hz vertical geophones, acquired using Geometrics proprietary software MGEOS, recording raw data files in .sg2 format. |
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| Data Storage: | The acquisition geometry is fully encoded in the .sgy files such that the shot point is fixed at 0 m in each file, and the geophone / trace spacing is specified in metres at increasing positive distance away from the shotpoint, effectively creating a 'walk-away' shot gather at each of the eight locations. |
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