Large-scale transport of Cochlodinium polykrikoides blooms by the Tsushima Warm Current in the southwest Sea of Japan

Goh Onitsuka, Kazutaka Miyahara, Naoki Hirose, Shuyo Watanabe, Hitoshi Semura, Reiko Hori, Tetsuya Nishikawa, Kuniaki Miyaji, Mineo Yamaguchi

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    Since 2002, blooms of the harmful dinoflagellate Cochlodinium polykrikoides Margalef have occurred in the eastern San-in area, the Japanese coastal area fronting the southwest Sea of Japan. To investigate the occurrence mechanisms of the blooms, numerical experiments were conducted using a Lagrangian particle-tracking model, under different hydrographic conditions in 2002-2008. The results of Lagrangian simulations revealed that the source region of the blooms was located in the southeast Korean coastal area, >500 km away from the eastern San-in area. They were transported by the Tsushima Warm Current over about two weeks to one month. The blooms in the eastern San-in area were thought to occur only when a series of sequential conditions were met, which included preceding outbreaks in Korean waters, southwesterly winds in the Tsushima Strait, and the nearshore position of the Tsushima Warm Current off the San-in coast, veering eastward from the Korean peninsula.

    Original languageEnglish
    Pages (from-to)390-397
    Number of pages8
    JournalHarmful Algae
    Volume9
    Issue number4
    DOIs
    Publication statusPublished - May 1 2010

    Fingerprint

    Sea of Japan
    Korean Peninsula
    algal bloom
    coasts
    dinoflagellate
    strait
    Miozoa
    sea
    coast
    simulation
    experiment
    water
    coastal area

    All Science Journal Classification (ASJC) codes

    • Aquatic Science
    • Plant Science

    Cite this

    Large-scale transport of Cochlodinium polykrikoides blooms by the Tsushima Warm Current in the southwest Sea of Japan. / Onitsuka, Goh; Miyahara, Kazutaka; Hirose, Naoki; Watanabe, Shuyo; Semura, Hitoshi; Hori, Reiko; Nishikawa, Tetsuya; Miyaji, Kuniaki; Yamaguchi, Mineo.

    In: Harmful Algae, Vol. 9, No. 4, 01.05.2010, p. 390-397.

    Research output: Contribution to journalArticle

    Onitsuka, G, Miyahara, K, Hirose, N, Watanabe, S, Semura, H, Hori, R, Nishikawa, T, Miyaji, K & Yamaguchi, M 2010, 'Large-scale transport of Cochlodinium polykrikoides blooms by the Tsushima Warm Current in the southwest Sea of Japan', Harmful Algae, vol. 9, no. 4, pp. 390-397. https://doi.org/10.1016/j.hal.2010.01.006
    Onitsuka, Goh ; Miyahara, Kazutaka ; Hirose, Naoki ; Watanabe, Shuyo ; Semura, Hitoshi ; Hori, Reiko ; Nishikawa, Tetsuya ; Miyaji, Kuniaki ; Yamaguchi, Mineo. / Large-scale transport of Cochlodinium polykrikoides blooms by the Tsushima Warm Current in the southwest Sea of Japan. In: Harmful Algae. 2010 ; Vol. 9, No. 4. pp. 390-397.
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