On Current Measurements in Lake Superior by Photogrammetry

L. A. Yeske Marine Studies Center, University of Wisconsin-Madison 53706

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T. Green III Marine Studies Center, University of Wisconsin-Madison 53706

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F. Scarpace Marine Studies Center, University of Wisconsin-Madison 53706

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R. E. Terrell Marine Studies Center, University of Wisconsin-Madison 53706

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Abstract

Approximately, 15,000 velocity measurements off the Keweenaw Peninsula were made in 1971. Preliminary results, based on less than 3% of the data, indicate that accurate, nearly synoptic current information can be obtained across an entire coastal current using aerial photography to track surface drift cards and photogrammetric reduction methods.

Multiple currents are indicated with Lagrangian velocity fluctuations greater than 10%.

Abstract

Approximately, 15,000 velocity measurements off the Keweenaw Peninsula were made in 1971. Preliminary results, based on less than 3% of the data, indicate that accurate, nearly synoptic current information can be obtained across an entire coastal current using aerial photography to track surface drift cards and photogrammetric reduction methods.

Multiple currents are indicated with Lagrangian velocity fluctuations greater than 10%.

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