On the Low-Frequency Motions in the Cilician Basin

Ümit Ünlüata Department of Marine Science, Middle East Technical University, P.K. 28, Erdemli, Icel, Turkey

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Abstract

The presence of low-frequency motions in the Cilician Basin (the northeastern Mediterranean Sea) is investigated. An f-plane, barotropic, wind-driven model is utilized by taking advantage of the channel-like geometry of the basin. An asymptotic method (Allen, 1976) is employed to decouple the channel proper from its narrow and steep coastal margins. A resonant response is predicted at the cut-off frequencies for which the group velocities vanish. Both this resonant response and another form of resonance are discussed. Partial support is found from available data.

Abstract

The presence of low-frequency motions in the Cilician Basin (the northeastern Mediterranean Sea) is investigated. An f-plane, barotropic, wind-driven model is utilized by taking advantage of the channel-like geometry of the basin. An asymptotic method (Allen, 1976) is employed to decouple the channel proper from its narrow and steep coastal margins. A resonant response is predicted at the cut-off frequencies for which the group velocities vanish. Both this resonant response and another form of resonance are discussed. Partial support is found from available data.

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