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SEA-ICE INFLUENCE ON ARCTIC COASTAL RETREAT.

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Abstract

Recent studies document the effectiveness of sea ice in reshaping the seafloor of the inner shelf into sharp-relief features, including ice gouges with jagged flanking ridges, ice-wallow relief, and 2- to 6-m-deep strudel-scour craters. These ice-related relief forms are in disequilibrium with classic open-water hydraulic processes and thus are smoothed over by waves and currents in one to two years. Such alternate reworking of the shelf by ice and currents - two diverse types of processes, which in the case of ice wallow act in unison-contributes to sediment mobility and, thus, to sediment loss from the coast and inner shelf. The bulldozing action by ice results in coast-parallel sediment displacement. Additionally, suspension of sediment by frazil and anchor ice, followed by ice rafting, can move large amounts of bottom-derived materials. Our understanding of all these processes is insufficient to model Arctic coastal processes.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
SEA-ICE INFLUENCE ON ARCTIC COASTAL RETREAT.
Volume
2
Year Published:
1987
Language:
English
Publisher:
ASCE
Publisher location:
New York, NY, USA
First page:
1578
Last page:
1591
Number of Pages:
14
Conference Title:
Coastal Sediments '87, Proceedings of a Specialty Conference on Advances in Understanding of Coastal Sediment Processes.
Conference Location:
New Orleans, LA, USA