Abstract:
This active source seismic survey was acquired at JP-21 (-68.008614degN, -64.367714degE) on Larsen C Ice Shelf, Antarctic Peninsula in December 2022. The active-source reflection seismic data were acquired with a spread of 48 vertical component geophones of 100 Hz with a sledgehammer impacting a thick plastic plate. The geophones were placed at 2 m intervals, making the total spread length 94 m. Data were collected mid-way between individual geophones starting at off-end location -1 m and finishing at +95 m, thus totalling 49 shots along the spread. At least five hammer shots were acquired for each shot point. The seismic data were acquired to image the marine ice at the base of the Larsen C Ice Shelf in this suture zone, as part of the NERC-funded RiPIce (Rift Propagation for Ice sheet models) research project.
This project was funded by a NERC standard grant NE/T008016/1.
Keywords:
Antarctica, Larsen C Ice Shelf, active seismic, marine ice
Kulessa, B., Miles, K., Luckman, A., & Hubbard, B. (2025). Active source seismic survey from the southern sector of Larsen C Ice Shelf, Antarctic Peninsula, December 2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/847a2898-51d1-4b74-a7b5-c73f179c8943
| Access Constraints: | None |
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| Use Constraints: | Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2025-03-24 |
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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 Polar Data Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Prof Bernd Kulessa |
| Role(s) | Investigator |
| Organisation | Swansea University |
| Name | Dr Katie Miles |
| Role(s) | Investigator |
| Organisation | Lancaster University |
| Name | Dr Adrian Luckman |
| Role(s) | Investigator |
| Organisation | Swansea University |
| Name | Bryn Hubbard |
| Role(s) | Investigator |
| Organisation | Aberystwyth University |
| Parent Dataset: | N/A |
| Reference: | Paper submitted to Geophysical Research Letters in March 2025: Transient electromagnetic imaging of permeable marine ice at the base of Larsen C Ice Shelf, Antarctic Peninsula, by Siobhan Killingbeck, Bernd Kulessa, Katie E. Miles, Bryn Hubbard, Adrian Luckman, Sarah Thompson, Glenn Jones, Benjamin K. Galton-Fenzi | |
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| Quality: | Data recorded are a single shot (unstacked data). The connection to geophone 34 did not work in the field, so trace 34 in all shot gathers is noisy and should be muted during processing. |
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| Lineage/Methodology: | The active-source seismic data were acquired with a spread of 48 vertical component geophones of 100 Hz with a sledgehammer impacting a thick plastic plate. The geophones were placed at 2 m intervals, making the total spread length 94 m. Data were collected mid-way between individual geophones starting at off-end location -1 m and finishing at +95 m, thus totalling 49 shots along the spread. At least five hammer shots were acquired for each shot point. First geophone (~0 m ) - 68.00938333 (lat), 64.37636667 (long) Last geophone (~95 m) - 68.01018500 (lat), 64.36665000 (long) |
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| Temporal Coverage: | |
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| Start Date | 2022-12-12 |
| End Date | 2022-12-12 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -68.0102 |
| Northernmost | -68.0093 |
| Longitude | |
| Westernmost | -64.3764 |
| Easternmost | -64.36665 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Data Resolution: | |
| Latitude Resolution | N/A |
| Longitude Resolution | N/A |
| Horizontal Resolution Range | N/A |
| Vertical Resolution | ~6m |
| Vertical Resolution Range | N/A |
| Temporal Resolution | N/A |
| Temporal Resolution Range | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Larsen C Ice Shelf |
| Sensor(s): |
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| Data Collection: | The data were acquired using a 48 channel geode seismic system, with 100 Hz vertical component geophones using the acquisition software Seismodule controller. |
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 3 kB |
| Distribution Format | ASCII |
| Fees | N/A |
| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 724 MB |
| Distribution Format | N/A |
| Fees | N/A |
| Data Storage: | This dataset consists of: - 1 observer log in CSV - 3kB - 245 SEG-2 data files (.dat extension) - 724 MB |