A STUDY OF WATER MASS STRUCTURE FROM CONTINUOUS OBSERVATION OF UPWELLING EVENT AT THE INNER PART OF TOKYO BAY

Abstract

 Through continuous observations conducted during upwelling event in the inner part of Tokyo Bay in 2020, a remarkable two peaks of turbidity was observed just above and below the intermediate anoxic layer. Formation mechanism of the two peaks of turbidity, which was coincide with higher elemental sulpfur concentration, was discussed by comparing TS diagram of data set in the navigation channel obtained between the short period. By employing area wide monitoring-post data sets, intrusion of the oceanic water into the lower layer of the Tokyo Bay and successive continuous blow of northerly wind were attributed to the cause of the upwelling event and formation of blue tide.