INFLUENCE OF ADVECTION OF KUROSHIO WATER ON ABNORMAL CATCH OF FISH IN JUNE 1999, AT THE COASTAL ZONE OF SOMA, NORTHEAST JAPAN

Abstract

Listen

Translate article

We analyze month-to-month variability of offshore condition using chlorophyll concentration based on in situ and satellite observations and to examine the abnormal catch event around sea area of Soma in June 1999. Time series of vertical distribution of DO and nutrient concentration (nitrogen, phosphorus), wind vector and AVHRR/SST are also used to understand the surrounding environments around Sendai Bay. Sea WiFS-derived concentration of chlorophyll a reveals that Sendai Bay represents small seasonal variation and the coastal region around the bay seems to be not affected directly by offshore condition. It is found that the abnormal catch phenomenon resulted from that the occurrence of advection and upwelling in this area does not appear to be due to the local wind but offshore current.