TITLE:
Minimum Wind Stress for the Occurrence of Blue Tide on the Southeast Shore of Tokyo Bay
AUTHORS:
Zhong Fan Zhu
KEYWORDS:
Minimum Wind Stress, Blue Tide, Tokyo Bay
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.2 No.3,
June
13,
2014
ABSTRACT:
In Tokyo Bay, blue tide is a phenomenon
that seawater presents to be milky blue due to reflection of sunshine off surface
water in which a large number of sulfur particles suspend. Its occurrence is
because of coastal upwelling of the oxygen-depleted water at the bottom of the
bay induced by the blowing of a northeasterly wind, consequently leading to
many deaths of shellfish and some aquatic animals in the bay. In this study, an
analytical solution of minimum wind stress for the occurrence of blue tide on
the southeast shore of the bay is presented based on a two-layered model, and
comparison with observation data of blue tide from 2003 to 2010 shows the
validity of this solution. The results of sensitivity analysis to all of parameters
involved in this solution were also found to agree with qualitative
understandings of blue tide phenomenon.