Brett, Gemma Marie; Gardiner, Natasha Blaize; Hawes, Ian; Kim, Sanghee; Rack, Wolfgang; Irvin, Anne; Langhorne, Patricia J; Haas, Christian: Drill hole measurements of land-fast sea ice and sub-ice platelet layer thicknesses, fast ice freeboard, and snow depth in Gerlache Inlet, north Terra Nova Bay, Antarctica in November 2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.968740 (dataset in review)
Abstract:
Here, we present drill hole measurements of land-fast sea ice and sub-ice platelet layer thicknesses, fast ice freeboard, and snow depth collected at 6 drill sites distributed over a 60 km^2 fast ice area in Gerlache Inlet, north Terra Nova Bay, western Ross Sea, Antarctica between 3 and 7 November 2021. At each site, five holes were drilled in the fast ice at the centre and end points of two cross‐profile lines, each 30 m long. Sea ice and SIPL thicknesses were measured with a suspended thickness probe and metal bar using the procedure described in Price et al. (2014). Snow depth measurements at centimetre accuracy were made at the drill holes using a metal ruler. Sea ice freeboard (i.e., the height of the sea ice surface above sea level) was measured in each of the drill holes. The average value for each parameter at a field site was calculated from the five drill hole measurements to provide a representative measurement over the 30 m cross-profile fast ice area. The drill hole measurements were used to underpin spatial distribution surveys of the aforementioned parameters, to calibrate electromagnetic induction forward and inverse models, and to ground-validate satellite altimetry assessments of fast ice freeboard and derived ice thickness.
Related to:
Brett, Gemma Marie; et al. (submitted): Ice Shelf Water-influenced Fast Ice and Sub-Ice Platelet Layer Thickness Distributions beside the Campbell Ice Tongue in Terra Nova Bay, Antarctica. Journal of Geophysical Research: Oceans
Brett, Gemma Marie; et al. (submitted): ICESat-2 Satellite Altimetry Assessment of Ice Shelf Water influenced Fast Ice in Terra Nova Bay. Geophysical Research Letters
Funding:
Korea Polar Research Institute (KOPRI), grant/award no. LogisticSupport: Coastal Marine Science Program
New Zealand Antarctic Institute, grant/award no. ASP_OPP_fast-ice: Geophysical assessment of fast ice and sub-ice platelet layer in Terra Nova Bay
Coverage:
Median Latitude: -74.653213 * Median Longitude: 164.205452 * South-bound Latitude: -74.675230 * West-bound Longitude: 164.105470 * North-bound Latitude: -74.642200 * East-bound Longitude: 164.347350
Date/Time Start: 2021-11-02T00:00:00 * Date/Time End: 2021-11-07T00:00:00
Event(s):
TNB2021_hole_2 * Latitude: -74.642210 * Longitude: 164.347350 * Date/Time: 2021-11-03T00:00:00 * Location: Terra Nova Bay * Method/Device: Ice drill (ICEDRILL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Brett, Gemma Marie | |||
| 2 | Identification | ID | Brett, Gemma Marie | objectID | ||
| 3 | Site | Site | Brett, Gemma Marie | |||
| 4 | DATE/TIME | Date/Time | Brett, Gemma Marie | Geocode | ||
| 5 | LONGITUDE | Longitude | Brett, Gemma Marie | Geocode | ||
| 6 | LATITUDE | Latitude | Brett, Gemma Marie | Geocode | ||
| 7 | Sea ice thickness | EsEs | m | Brett, Gemma Marie | Suspended thickness probe and metal bar according to Price et al. (2014) | |
| 8 | Sub-ice platelet-layer thickness | SIPL | m | Brett, Gemma Marie | Suspended thickness probe and metal bar according to Price et al. (2014) | |
| 9 | Sea ice freeboard | Sea ice freeboard | m | Brett, Gemma Marie | ||
| 10 | Snow thickness | Snow thick | m | Brett, Gemma Marie | Metal ruler |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
36 data points