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    Update of analysis on sea-ice concentration of southern part of 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA

    Request Meeting Document
    Document Number:
    WG-SAM-17/10
    Author(s):
    T. Namba, T. Ichii and T. Okuda
    Submitted By:
    Dr Taro Ichii
    Approved By:
    Dr Taro Ichii
    Agenda Item(s)
    WG-SAM-17 - 4.1 - Proposals and research results from Subarea 48.6
    Abstract

    Following WG-SAM-16/42 Rev. 1, we updated the analysis on the sea-ice concentration of the period (2002-2017 until April) for 48.6_4 and 48.6_5. In addition, we also analyze the ice concentration of 58.4.2 to examine accessibility there for fishing vessels as candidate for a new research block. This research block is hypothesized as one of spawning grounds for TOA by Taki (WG-FSA-16/32 Rev. 1) and hence it should be covered by research for stock assessment in the near future.