Divergence/convergence field observed with GPS tracked drifters in the Upper Gulf of Thailand

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概要

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• The relationship between the divergence/convergence field and chlorophyll a concentration in the surface layer of the Upper Gulf of Thailand is investigated by field observations of hydrographic parameters including temperature, salinity, nutrients, chlorophyll, and other properties, and experiments using GPS tracked drifters. The field observations were carried out on board a research vessel Kasetsart I and a fishing boat in May and October 2004, and February 2005. It is found that there is a clear correlation in a qualitative sense between divergence field and chlorophyll a, in which relatively higher chlorophyll a is observed in a divergent condition, with an exception at one station where the opposite relation is indicated possibly because of some local effects of a nearby island upon the surface currents. Such a clear correlation, however, can not be explained by a hypothetical scenario that surface divergence sustains a high chlorophyll a by supplying water of high nutrients from the lower layer, having been considered the distribution of nutrients and other hydrographic structures.

• 東京大学の論文
• 2006-04-28

著者

• Michida Yutaka

  Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano, Tokyo 164-8639, Japan.

• Yanagi Tetsuo

  Research Institute For Applied Mechanics (riam) Kyushu University Kasuga-koen

• Michida Yutaka

  Ocean Research Institute The University Of Tokyo

• TAKIMOTO Ryota

  Ocean Research Institute, The University of Tokyo

• SOJISPORN Pramot

  Marine Science Department, Faculty of Science, Chulalongkorn University

• Sojisporn Pramot

  Marine Science Department Faculty Of Science Chulalongkorn University

• Takimoto Ryota

  Ocean Research Institute The University Of Tokyo

• Yanagi Tetsuo

  Research Institute For Applied Mechanics (riam) Kyushu University

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