Perennial pack ice in the southern Beaufort Sea was not as it appeared in the summer of 2009
Identifieur interne : 001E94 ( Main/Exploration ); précédent : 001E93; suivant : 001E95Perennial pack ice in the southern Beaufort Sea was not as it appeared in the summer of 2009
Auteurs : David G. Barber [Canada] ; Ryan Galley [Canada] ; Matthew G. Asplin [Canada] ; Roger De Abreu [Canada] ; Kerri-Ann Warner [Canada] ; Monika Pu Ko [Canada] ; Mukesh Gupta [Canada] ; Simon Prinsenberg [Canada] ; Stéphane Julien [Canada]Source :
- [ 0094-8276 ]
Abstract
In September 2009 we observed a much different sea icescape in the Southern Beaufort Sea than anticipated, based on remotely sensed products. Radarsat derived ice charts predicted 7 to 9 tenths multi‐year (MY) or thick first‐year (FY) sea ice throughout most of the Southern Beaufort Sea in the deep water of the Canada Basin. In situ observations found heavily decayed, very small remnant MY and FY floes interspersed with new ice between floes, in melt ponds, thaw holes and growing over negative freeboard older ice. This icescape contained approximately 25% open water, predominantly distributed in between floes or in thaw holes connected to the ocean below. Although this rotten ice regime was quite different that the expected MY regime in terms of ice volume and strength, their near‐surface physical properties were found to be sufficiently alike that their radiometric and scattering characteristics were almost identical.
Url:
DOI: 10.1029/2009GL041434
Affiliations:
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Radarsat derived ice charts predicted 7 to 9 tenths multi‐year (MY) or thick first‐year (FY) sea ice throughout most of the Southern Beaufort Sea in the deep water of the Canada Basin. In situ observations found heavily decayed, very small remnant MY and FY floes interspersed with new ice between floes, in melt ponds, thaw holes and growing over negative freeboard older ice. This icescape contained approximately 25% open water, predominantly distributed in between floes or in thaw holes connected to the ocean below. Although this rotten ice regime was quite different that the expected MY regime in terms of ice volume and strength, their near‐surface physical properties were found to be sufficiently alike that their radiometric and scattering characteristics were almost identical.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Manitoba</li></region><settlement><li>Winnipeg</li></settlement><orgName><li>Université du Manitoba</li></orgName></list><tree><country name="Canada"><region name="Manitoba"><name sortKey="Barber, David G" sort="Barber, David G" uniqKey="Barber D" first="David G." last="Barber">David G. Barber</name></region><name sortKey="Asplin, Matthew G" sort="Asplin, Matthew G" uniqKey="Asplin M" first="Matthew G." last="Asplin">Matthew G. Asplin</name><name sortKey="Barber, David G" sort="Barber, David G" uniqKey="Barber D" first="David G." last="Barber">David G. Barber</name><name sortKey="De Abreu, Roger" sort="De Abreu, Roger" uniqKey="De Abreu R" first="Roger" last="De Abreu">Roger De Abreu</name><name sortKey="Galley, Ryan" sort="Galley, Ryan" uniqKey="Galley R" first="Ryan" last="Galley">Ryan Galley</name><name sortKey="Gupta, Mukesh" sort="Gupta, Mukesh" uniqKey="Gupta M" first="Mukesh" last="Gupta">Mukesh Gupta</name><name sortKey="Julien, Stephane" sort="Julien, Stephane" uniqKey="Julien S" first="Stéphane" last="Julien">Stéphane Julien</name><name sortKey="Prinsenberg, Simon" sort="Prinsenberg, Simon" uniqKey="Prinsenberg S" first="Simon" last="Prinsenberg">Simon Prinsenberg</name><name sortKey="Pu Ko, Monika" sort="Pu Ko, Monika" uniqKey="Pu Ko M" first="Monika" last="Pu Ko">Monika Pu Ko</name><name sortKey="Pu Ko, Monika" sort="Pu Ko, Monika" uniqKey="Pu Ko M" first="Monika" last="Pu Ko">Monika Pu Ko</name><name sortKey="Warner, Kerri Nn" sort="Warner, Kerri Nn" uniqKey="Warner K" first="Kerri-Ann" last="Warner">Kerri-Ann Warner</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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