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
Identification info
- Date (Creation)
- 2021-06-25T00:00:00
- Date (Publication)
- 2021-06-25T00:00:00
- Citation identifier
- https://doi.org/10.1594/PANGAEA.933079
- Presentation form
- Status
- Completed
- Point of contact - Custodian, Owner, etc
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Role Organisation Individual Electronic mail address Author Langhorne, Patricia J. pat.langhorne@otago.ac.nz Co-author Leonard, Gregory. greg.leonard@otago.ac.nz Co-author Gough, Alexander J. alex.j.gough@gmail.com Co-author Hughes, Kenneth G. kenneth.hughes@oregonstate.edu Co-author Haas, Christian. christian.haas@awi.de Co-author Beckers, Justin F. beckers@ualberta.ca Co-author Price, Daniel. daniel.price@canterbury.ac.nz Co-author Barnsdale, Kelvin. kelvin.barnsdale@canterbury.ac.nz Co-author Rack, Wolfgang. wolfgang.rack@canterbury.ac.nz Co-author Brett, Gemma Marie. gemma.brett@canterbury.ac.nz Publisher PANGAEA info@pangaea.de
- Spatial representation type
- Topic category
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- Oceans
Extent
Temporal extent
- Time period
- 2011-11-23T00:00:00 2011-12-05T00:00:00
- Maintenance and update frequency
- As needed
- Keywords
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- FAST ICE
- SUB-ICE PLATELET LAYER
- DRILL HOLE
- K063A
- GCMD Earth Science and Earth Science Services Keywords
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- ICE DEPTH/THICKNESS
- SEA ICE DYNAMICS
- SNOW DEPTH
- SEA ICE
- FREEBOARD
- GCMD Platform/Sources Keywords
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- FIELD SURVEYS
- DRILLING PLATFORMS
- GCMD Locations Keywords
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- ANTARCTICA
- MCMURDO SOUND
- Resource constraints
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Legal constraints Access constraints Use constraints Constraint application scope This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) License License Dataset
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distribution format
-
Transfer options
- Online resource
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Name Linkage (URL) Protocol Function Description Pangaea https://doi.pangaea.de/10.1594/PANGAEA.933079?format=textfile WWW:DOWNLOAD-1.0-http--download Download
- Metadata constraints
-
Legal constraints Access constraints Use constraints Constraint application scope This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) License License Metadata
Metadata
- Metadata identifier
- urn:uuid/7c510bd1-9afa-40be-b64c-480da0e96fab
- Language
- English
- Character encoding
- anyValidURI
- Metadata Contact
-
Role Organisation Individual Electronic mail address Point of contact Antarctica New Zealand adminteam@antarcticanz.govt.nz
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
Name Linkage (URL) Protocol Function Description https://doi.org/10.1594/PANGAEA.933079 Complete Metadata
- Date info (Revision)
- 2024-05-30T03:05:22
- Date info (Creation)
- 2024-05-09T23:45:03
Metadata standard
- Format name
- ISO 19115-1
- Edition
- 2018