Bottom stress generation and sediment transport over the shelf and slope off of Lake Superior's Keweenaw peninsula

Churchill, James H.
Williams, Albert J.
Ralph, Elise A.

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Publication date

October 2004

DOI

10.1029/2003JC001997

Publisher

American Geophysical Union (AGU)

ISSN

0148-0227

Language

English

Citation count (estimate)

Abstract

Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C10S04, doi:10.1029/2003JC001997.Data from near-bottom instruments reveal that the mechanisms responsible for generating bottom stresses and resuspending sediment over the shelf and slope off of Lake Superior's Keweenaw peninsula exhibit distinct seasonal variations. Notably, near-bottom flows over the slope are persistently weak (<10 cm s−1) during summer but frequently attain high speeds, in excess of 20 cm s−1, in autumn and winter. During the intense storms of autumn and winter the genera...