Linked Life Data

11541256

Source:http://linkedlifedata.com/resource/pubmed/id/11541256

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1998-12-5
pubmed:abstractText
Year-round temperature measurements at 1600 m elevation during 1994 in the Asgard Range Antarctica, indicate that the mean annual frost point of the ice-cemented ground, 25 cm below the surface, is -21.7 +/- 0.2 degrees C and the mean annual frost point of the atmosphere is -27.5 +/- 1.0 degrees C. The corresponding mean annual temperatures are -24.9 degrees C and -23.3 degrees C. These results imply that there is a net flux of water vapour from the ice to the atmosphere resulting in a recession of the ice-cemented ground by about 0.4-0.6 mm yr-1. The level of the ice-cemented permafrost is about 12 cm below the level of dry permafrost. The summer air temperatures would have to increase about 7 degrees C for thawing temperatures to just reach the top of the subsurface ice. Either subsurface ice at this location is evaporating over time or there are sporadic processes that recharge the ice and maintain equilibrium over long timescales.
pubmed:keyword
pubmed:language
eng
pubmed:citationSubset
S
pubmed:chemical
pubmed:status
MEDLINE
pubmed:author
pubmed:owner
NASA
pubmed:authorsComplete
Y
pubmed:pagination
31-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
Soil temperatures and stability of ice-cemented ground in the McMurdo Dry Valleys, Antarctica.
pubmed:affiliation
Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.