A study on the transfer of blue tide and the relationship between high turbidity and sulfur in Tokyo Bay

Abstract

The purpose of this study is to analyze the relationship between high turbidity and sulfur, and transfer of a blue tide after upwelling. We achieved ship observations of a blue tide at 24th August 2015 on the inner part of Tokyo Bay. There was a definite positive correlation between turbidity and sulfur from analysis of water samples. Therefore, high turbidity indicates the particulate sulfur element in a blue tide. Upwelling water of the blue tide outflowed to the middle layer for analyzing a composition of the blue tide water. It was considered that a density of upwelling water decreased slightly due to mix with around surface water. The blue tide water drifted on a pycnocline for wind driven current and density current.