Observations of supercooling and frazil ice formation in the Laptev Sea coastal polynya
Identifieur interne : 001263 ( Istex/Curation ); précédent : 001262; suivant : 001264Observations of supercooling and frazil ice formation in the Laptev Sea coastal polynya
Auteurs : Igor A. Dmitrenko [Allemagne] ; Carolyn Wegner [Allemagne] ; Heidemarie Kassens [Allemagne] ; Sergey A. Kirillov [Russie] ; Thomas Krumpen [Allemagne] ; Günther Heinemann [Allemagne] ; Alfred Helbig [Allemagne] ; David Schröder [Allemagne] ; Jens A. Hölemann [Allemagne] ; Torben Klagge [Allemagne] ; Konstantin P. Tyshko [Russie] ; Thomas Busche [Allemagne]Source :
- Journal of Geophysical Research: Oceans [ 0148-0227 ] ; 2010-05.
Abstract
This paper examines a hydrographic response to the wind‐driven coastal polynya activity over the southeastern Laptev Sea shelf for April–May 2008, using a combination of Environmental Satellite (Envisat) advanced synthetic aperture radar (ASAR) and TerraSAR‐X satellite imagery, aerial photography, meteorological data, and SBE‐37 salinity‐temperature‐depth and acoustic Doppler current profiler land‐fast ice edge‐moored instruments. When ASAR observed the strongest end‐of‐April polynya event with frazil ice formation, the moored instruments showed maximal acoustical scattering within the surface mixed layer, and the seawater temperatures were either at or 0.02°C below freezing. We also find evidence of the persistent horizontal temperature and salinity gradients across the fast ice edge to have the signature of geostrophic flow adjustment as predicted by polynya models.
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DOI: 10.1029/2009JC005798
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Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2010-05">2010-05</date><biblScope unit="volume">115</biblScope><biblScope unit="issue">C5</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">0FECA3C16BDFC799B30436D0ADF9DD11B4C7B5EC</idno><idno type="DOI">10.1029/2009JC005798</idno><idno type="ArticleID">2009JC005798</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">This paper examines a hydrographic response to the wind‐driven coastal polynya activity over the southeastern Laptev Sea shelf for April–May 2008, using a combination of Environmental Satellite (Envisat) advanced synthetic aperture radar (ASAR) and TerraSAR‐X satellite imagery, aerial photography, meteorological data, and SBE‐37 salinity‐temperature‐depth and acoustic Doppler current profiler land‐fast ice edge‐moored instruments. When ASAR observed the strongest end‐of‐April polynya event with frazil ice formation, the moored instruments showed maximal acoustical scattering within the surface mixed layer, and the seawater temperatures were either at or 0.02°C below freezing. We also find evidence of the persistent horizontal temperature and salinity gradients across the fast ice edge to have the signature of geostrophic flow adjustment as predicted by polynya models.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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