• Title/Summary/Keyword: surface geostrophic currents

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Descriptive hydrography of shelikof Strait, Gulf of Alaska, during the Spring Spawning Time of Walleye Pollock, Theragra chalcogramma, in the Early 1980's (명태(Theragra chalcogramma)의 산란장, 알라스카만 쉘리코프 해협의 1980년대 초반의 해황에 관한 연구)

  • KIM, SUAM
    • 한국해양학회지
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    • v.28 no.1
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    • pp.35-46
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    • 1993
  • To delineate water properties and current patterns in the spawning area of walleye pollock, hydrographic cast and current meter data collected in Strait, Gulf of alaska, were analysed, three water masses are identified in Shelikof Strait. A small amount of cold and dilute water ($<{\;}3^{\circ}C{\;}and{\;}<{\;}31.5\textperthousand$) originates from the lower Cook Inlet and flows southwestward close to the Alaska Peninsula coast. One branch of alaska coastal Current which enters the strait from the northeast comprises the main body of the upper and middle layers of the strait, and flows toward the southwest. Estimation of geostrophic baroclinic currents reveals that comparatively fast flow exists in the surface over the deepest portion of the strait, and most water exits through the southwestern entrance between Semidi and chirikof Is. On the other hand, a relatively slow-moving warm and saline ($>{\;}5^{circ}C{\;}and{\;}>{\;}32\textperthousand$) of the southwestern entrance flows northeasterly, and occupies the bottom layer in Shelikof Strait.

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