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Titolo:
Determination of the influence of wind on the Keweenaw Current in the LakeSuperior basin as identified by Advanced Very High Resolution Radiometer (AVHRR) imagery
Autore:
Van Luven, DM; Huntoon, JE; Maclean, AL;
Indirizzi:
Michigan Technol Univ, Dept Geol Engn & Sci, Houghton, MI 49931 USA Michigan Technol Univ Houghton MI USA 49931 & Sci, Houghton, MI 49931 USA Michigan Technol Univ, Sch Forestry & Wood Prod, Houghton, MI 49931 USA Michigan Technol Univ Houghton MI USA 49931 Prod, Houghton, MI 49931 USA
Titolo Testata:
JOURNAL OF GREAT LAKES RESEARCH
fascicolo: 4, volume: 25, anno: 1999,
pagine: 625 - 641
SICI:
0380-1330(1999)25:4<625:DOTIOW>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
SATELLITE IMAGES; TEMPERATURE;
Keywords:
Keweenaw current; AVHRR; water temperature; wind; Lake Superior;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Huntoon, JE Michigan Technol Univ, Dept Geol Engn & Sci, 1400 Townsend Dr,Houghton, MI 49931 USA Michigan Technol Univ 1400 Townsend Dr Houghton MI USA 49931 A
Citazione:
D.M. Van Luven et al., "Determination of the influence of wind on the Keweenaw Current in the LakeSuperior basin as identified by Advanced Very High Resolution Radiometer (AVHRR) imagery", J GR LAKES, 25(4), 1999, pp. 625-641

Abstract

The Keweenaw Current is a warm coastal current in Lake Superior that flowsnortheastward along the northern shore of Michigan's Keweenaw peninsula. This study focuses on the fate of the current at the tip of the Keweenaw Peninsula. Results of this study suggest that the path of the current beyond the peninsula is primarily controlled by wind. In this study, eleven surface temperature maps derived from Advanced Very High Resolution Radiometric (AVHRR) data using computer assisted image processing techniques were used to identify the Keweenaw Current. Wind data from two moored data buoys, a Coastal Marine Automated Network (CMAN) fixed buoy, and three airport weather stations, collected on the same day as each of the images and for the two days preceding the image date, are used to determine whether wind direction and speed influence the path of the Keweenaw Current past the tip of the peninsula. In nine images the current's path issimilar to the surface Ekman transport direction predicted from wind data. All eleven images show a similarity between the current's actual path and a path calculated when net Ekman transport is assumed. Results of this study also show that there may be a possible lag time of one day between a change in wind direction and the current's adjustment to that change.

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Documento generato il 03/12/20 alle ore 15:09:32