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dc.contributor.author
Rabenstein, Lasse
dc.contributor.author
Hendricks, Stefan
dc.contributor.author
Martin, Torge
dc.contributor.author
Pfaffhuber, Andreas A.
dc.contributor.author
Haas, Christian
dc.date.accessioned
2020-07-13T08:42:01Z
dc.date.available
2017-06-09T17:42:51Z
dc.date.available
2020-07-13T08:42:01Z
dc.date.issued
2010-12
dc.identifier.issn
0148-0227
dc.identifier.issn
2169-9275
dc.identifier.other
10.1029/2009JC005846
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/42269
dc.description.abstract
Large-scale sea-ice thickness and surface property data were obtained in three summers and in three different sea-ice regimes in the Arctic Trans-Polar Drift (TPD) by means of helicopter electromagnetic sounding. Distribution functions P of sea-ice thickness and of the height, spacing, and density of sails were analyzed to characterize ice regimes of different ages and deformations. Results suggest that modal ice thickness is affected by the age of a sea-ice regime and that the degree of deformation is represented by the shape of P. Mean thickness changes with both age and deformation. Standard error calculations showed that representative mean and modal thickness could be obtained with transect lengths of 15 km and 50 km, respectively, in less deformed ice regimes such as those around the North Pole. In heavier deformed ice regimes closer to Greenland, 100 km transects were necessary for mean thickness determination and a representative modal thickness could not be obtained at all. Mean sail height did not differ between ice regimes, whereas sail density increased with the degree of deformation. Furthermore, the fraction of level ice, open melt ponds, and open water along the transects were determined. Although overall ice thickness in the central TPD was 50% thinner in 2007 than in 2001, first-year ice (FYI) was not significantly thinner in 2007 than FYI in 2001, with a decrease of only 0.3 m. Thinner FYI in 2007 only occurred close to the sea-ice edge, where open water covered more than 10% of the surface. Melt pond coverage retrieved from laser measurements was 15% in both the 2004 MYI regime and the 2007 FYI regime. Copyright 2010 by the American Geophysical Union.
en_US
dc.language.iso
en
en_US
dc.publisher
American Geophysical Union
en_US
dc.subject
Sea-ice thickness
en_US
dc.subject
Helicopter electromagnetics
en_US
dc.title
Thickness and surface‐properties of different sea‐ice regimes within the Arctic Trans Polar Drift: Data from summers 2001, 2004 and 2007
en_US
dc.type
Journal Article
dc.date.published
2010-12-22
ethz.journal.title
Journal of Geophysical Research: Oceans
ethz.journal.volume
115
en_US
ethz.journal.issue
12
en_US
ethz.journal.abbreviated
J. geophys. res. Ocean.
ethz.pages.start
C12059
en_US
ethz.size
18 p.
en_US
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
03336 - Green, Alan G.
en_US
ethz.leitzahl.certified
03336 - Green, Alan G.
ethz.date.deposited
2017-06-09T17:42:56Z
ethz.source
ECIT
ethz.identifier.importid
imp59364eb74705730381
ethz.ecitpid
pub:70435
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2017-07-31T15:07:52Z
ethz.rosetta.lastUpdated
2022-03-29T02:38:25Z
ethz.rosetta.versionExported
true
ethz.COinS
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