Langhorne, Patricia J; Haas, Christian; Rack, Wolfgang; Leonard, Greg H; Brett, Gemma Marie; Price, Daniel (2022): Coastal and landfast sea ice thickness in western Ross Sea, Antarctica, from airborne electromagnetic induction in November 2017: sea ice in front of Hells Gate Ice Shelf [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950398, In: Langhorne, PJ et al. (2022): Coastal and landfast sea ice thickness in western Ross Sea, Antarctica, from airborne electromagnetic induction in November 2017 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.950402
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Abstract:
The data are approximately 800 km of airborne electromagnetic survey of coastal sea ice and sub-ice platelet layer (SIPL) thickness distributions in the western Ross Sea, Antarctica, from McMurdo Sound to Cape Adare. Data were collected between 8 and 13 November 2017, within 30 days of the maximum fast ice extent in this region. Approximately 700 km of the transect was over landfast sea ice that had been mechanically attached to the coast for at least 15 days. Most of the ice was first-year sea ice. Unsmoothed in-phase and quadrature components are presented at all locations. Data have been smoothed with an 100 point median filter, and in-phase and quadrature smoothed data are also presented at all locations. Beneath level ice it is possible to identify the thickness of an SIPL and a filter is described (Langhorne et al) to identify level ice. Level ice in-phase, quadrature and SIPL thickness, derived from these, are presented at locations of level ice. For rough ice, the in-phase component is considered the best measure of sea ice thickness. For level ice where there is the possibility of an SIPL, then the quadrature component is considered the best measure of ice thickness, along with SIPL thickness. All data are in meters.
Keyword(s):
Related to:
Haas, Christian; Langhorne, Patricia J; Rack, Wolfgang; Leonard, Greg H; Brett, Gemma Marie; Price, Daniel; Beckers, Justin F (2021): Airborne mapping of the sub-ice platelet layer under fast ice in McMurdo Sound, Antarctica. The Cryosphere, 15(1), 247-264, https://doi.org/10.5194/tc-15-247-2021
Langhorne, Patricia J; Haas, Christian; Price, Daniel; Rack, Wolfgang; Leonard, Greg H; Brett, Gemma Marie; Urbini, Stefano (submitted): Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring. Journal of Geophysical Research: Oceans
Rack, Wolfgang; Price, Daniel; Haas, Christian; Langhorne, Patricia J; Leonard, Greg H (2021): Sea Ice Thickness in the Western Ross Sea. Geophysical Research Letters, 48(1), https://doi.org/10.1029/2020GL090866
Project(s):
Coverage:
Median Latitude: -74.897829 * Median Longitude: 163.814603 * South-bound Latitude: -74.926506 * West-bound Longitude: 163.752690 * North-bound Latitude: -74.874123 * East-bound Longitude: 163.882290
Date/Time Start: 2017-11-09T00:00:00 * Date/Time End: 2017-11-09T00:00:00
Event(s):
Comment:
Location sea ice in front of Hells Gate Ice Shelf
Fast ice data collected 9 Nov 2017
Blank cell indicates that data do not exist at that location.
NB: for level ice column5=column7 and column 6=column8. For rough ice there are no entries in columns 7, 8, & 9.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Date/Time of event | Date/Time | ||||
| 2 | LATITUDE | Latitude | Langhorne, Patricia J | Geocode – at points where thickness data exist i.e. Bird height is suitable | ||
| 3 | LONGITUDE | Longitude | Langhorne, Patricia J | Geocode – at points where thickness data exist i.e. Bird height is suitable | ||
| 4 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Raw in-phase thickness at positions where Bird height is suitable |
| 5 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Raw quadrature thickness at positions where Bird height is suitable |
| 6 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Smoothed in-phase thickness with 100 point median filter |
| 7 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Smoothed quadrature thickness with 100 point median filter |
| 8 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Smoothed in-phase thickness with 100 point median filter over “level” ice |
| 9 | Sea ice thickness | EsEs | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | Smoothed quadrature thickness with 100 point median filter over “level” ice |
| 10 | Sub-ice platelet-layer thickness | SIPL | m | Langhorne, Patricia J | Electro-magnetic Bird (EM-Bird) (EMB) | over “level” ice |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
13198 data points
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