Record Details

Alongshore coherence at low frequencies in currents observed over the continental shelf off Oregon and Washington

ScholarsArchive at Oregon State University

Field Value
Title Alongshore coherence at low frequencies in currents observed over the continental shelf off Oregon and Washington
Names Huyer, Adriana, 1945- (creator)
Hickey, Barbra M. (creator)
Smith, J. Dungan (creator)
Smith, Robert L. (Robert Lloyd), 1935- (creator)
Pilsbury, R. Dale (creator)
Date Issued 1975-08-20 (iso8601)
Abstract Current observations over the continental shelf at locations off central Oregon and southern Washington
had the period from July 18 to September 18, 1972, in common. Low-frequency fluctuations (less than
one cycle per day) in the currents are compared by means of visual display, linear regression, and spectral
analysis. The currents are found to be highly coherent over an alongshore separation of 200 km. Coherent
signals occur at 0.16, 0.3, and 0.44 cpd. The signal at 0.16 cpd occurs with high mutual coherence in wind,
current, and sea level and may be a forced shelf wave driven by the wind. The signal at 0.3 cpd has high
coherence between current and sea level and may be a free shelf wave generated by the wind. Correlation
between observations is higher for separations in the alongshore direction than in the offshore direction in
spite of greater separations.
Genre Article
Identifier Huyer, A., Hickey, B. M., Smith, J. D., Smith, R. L., & Pillsbury, R. D. (1975). Alongshore coherence at low frequencies in currents observed over the continental shelf off Oregon and Washington. Journal of Geophysical Research, 80(24), 3495-3505.

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