Drill hole measurements of fast ice and sub-ice platelet layer thickness, and snow depth in McMurdo Sound - November/December 2011
The thicknesses of sea ice and sub-ice platelet layer were measured at regular intervals on fast ice in McMurdo Sound, Antarctica in November and December of 2011. Thirty-metre cross-profiles were established at each site, and snow depths were measured at 0.5 m intervals along the transect lines with a metal ruler. A mean snow depth for each site was derived from these 120 measurements. Freeboard, sea ice thickness and sub-ice platelet layer thickness were recorded at five locations at each site - at the central crossing point and at the end points of each transect. The mean of these was then calculated and taken as representative of the site. Ice thicknesses were measured by using a tape measure with a brass T-anchor attached at the zero mark. This was deployed vertically through the drill-hole and allowed to rotate to a horizontal alignment when exiting the bottom of the drill-hole at the ice-ocean interface. From this position the anchor is slowly pulled upwards until some resistance is met and the first measurement is taken. This resistance is taken to mark the sub-ice platelet layer/ocean interface. The tape measure is then pulled harder, forcing the bar to pass through the sub-ice platelet layer until it sits flush against the sea ice/sub-ice platelet layer interface where a second measurement is taken. Measurement sites were about 5 km apart.
Simple
- Date (Creation)
- 2021-06-25T00:00:00
- Date (Publication)
- 2021-06-25T00:00:00
Citation identifier
- Citation identifier
- https://doi.org/10.1594/PANGAEA.933079
- Status
- Completed
- Point of contact
-
Organisation name Individual name Electronic mail address Role Langhorne, Patricia J.
Author Leonard, Gregory.
coAuthor Gough, Alexander J.
coAuthor Hughes, Kenneth G.
coAuthor Haas, Christian.
coAuthor Beckers, Justin F.
coAuthor Price, Daniel.
coAuthor Barnsdale, Kelvin.
coAuthor Rack, Wolfgang.
coAuthor Brett, Gemma Marie.
coAuthor PANGAEA
Publisher
- Maintenance and update frequency
- As needed
- Keywords
-
-
FAST ICE
-
SUB-ICE PLATELET LAYER
-
DRILL HOLE
-
K063A
-
- GCMD Earth Science and Earth Science Services Keywords
-
-
ICE DEPTH/THICKNESS
-
SEA ICE DYNAMICS
-
SNOW DEPTH
-
SEA ICE
-
FREEBOARD
-
- GCMD Platform/Sources Keywords
-
-
FIELD SURVEYS
-
DRILLING PLATFORMS
-
- GCMD Locations Keywords
-
-
ANTARCTICA
-
MCMURDO SOUND
-
- Use limitation
-
This data set conforms to the CC BY Attribution License ( https://creativecommons.org/licenses/by/4.0/ )
- Hierarchy level
- Dataset
- Date
- Statement
-
Creative Commons Attribution 4
- gmd:disseminationConstraints
- License
- Access constraints
- License
- Use constraints
- License
- Language
- English
- Character set
- UTF8
- Topic category
-
- Oceans
- Begin date
- 2011-11-23T00:00:00
- End date
- 2011-12-05T00:00:00
- Distribution format
-
Name Version
- OnLine resource
-
Protocol Linkage Name WWW:DOWNLOAD-1.0-http--download
https://doi.pangaea.de/10.1594/PANGAEA.933079?format=textfile Pangaea
Metadata
- File identifier
- 7c510bd1-9afa-40be-b64c-480da0e96fab XML
- Metadata language
- English
- Character set
- anyValidURI
- Hierarchy level
- Dataset
- Date stamp
- 2024-05-30T03:05:22
- Metadata standard name
-
ISO 19115
- Metadata standard version
-
2003
- Metadata author
-
Organisation name Individual name Electronic mail address Role Antarctica New Zealand
Point of contact