Seasonal response of the southern East China Sea shelf water to wind-modulated throughflow in the Taiwan Strait

Jae Hong Moon, Naoki Hirose

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Seasonal change of the southern East China Sea (ECS) shelf water and its relation to the throughflow in the Taiwan Strait (TS) was examined based on comparative experiments with inserting passive tracers into a regional ocean model. Through analyzing the model output results, we found that from autumn to winter strong northeasterly wind over the TS significantly weakens the outflow from the TS (i.e., flowing into the ECS) and the Kuroshio water intrudes farther shoreward across the northern shelf of Taiwan in response to the weakened outflow. On the other hand, water flowing into the shelf from the TS extends further offshore from spring to summer when the TS throughflow is enhanced by a wind change from northeasterly to southwesterly and the Kuroshio water retreats seaward off the shelf due to the offshore extension of the shelf water. It suggests that the weakening (strengthening) of the TS throughflow could allow (inhibit) shelf-ward Kuroshio water onto the northeastern shelf of Taiwan, emphasizing that the throughflow modulated by a local wind can be an important factor controlling the seasonal variation of the southern ECS shelf water.

    Original languageEnglish
    Pages (from-to)74-82
    Number of pages9
    JournalProgress in Oceanography
    Volume121
    DOIs
    Publication statusPublished - Feb 1 2014

    Fingerprint

    throughflow
    East China Sea
    shelf sea
    strait
    Taiwan
    water
    outflow
    seasonal variation
    tracer
    autumn
    tracer techniques
    oceans
    winter
    ocean
    summer
    experiment

    All Science Journal Classification (ASJC) codes

    • Aquatic Science
    • Geology

    Cite this

    Seasonal response of the southern East China Sea shelf water to wind-modulated throughflow in the Taiwan Strait. / Moon, Jae Hong; Hirose, Naoki.

    In: Progress in Oceanography, Vol. 121, 01.02.2014, p. 74-82.

    Research output: Contribution to journalArticle

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    abstract = "Seasonal change of the southern East China Sea (ECS) shelf water and its relation to the throughflow in the Taiwan Strait (TS) was examined based on comparative experiments with inserting passive tracers into a regional ocean model. Through analyzing the model output results, we found that from autumn to winter strong northeasterly wind over the TS significantly weakens the outflow from the TS (i.e., flowing into the ECS) and the Kuroshio water intrudes farther shoreward across the northern shelf of Taiwan in response to the weakened outflow. On the other hand, water flowing into the shelf from the TS extends further offshore from spring to summer when the TS throughflow is enhanced by a wind change from northeasterly to southwesterly and the Kuroshio water retreats seaward off the shelf due to the offshore extension of the shelf water. It suggests that the weakening (strengthening) of the TS throughflow could allow (inhibit) shelf-ward Kuroshio water onto the northeastern shelf of Taiwan, emphasizing that the throughflow modulated by a local wind can be an important factor controlling the seasonal variation of the southern ECS shelf water.",
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