Horizontal current field, ADCP backscatter, and plankton distribution in Sagami Bay, Japan期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Horizontal current field, ADCP backscatter, and plankton distribution in Sagami Bay, Japan

Authors:	TETSUTARO TAKIKAWA MINORU KITAMURA NAHO HORIMOTO

Institution:	National Fisheries University, 2-7-1 Nagata-Honmachi, Shimonoseki 759-6595, Japan; Extremobiosphere Research Center, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushimacho, Yokosuka 237-0061, Japan; Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7, Konan, Minato-ku, Tokyo 108-8477, Japan

Abstract:	The dry mass of zooplankton and backscatter from an acoustic Doppler current profiler (ADCP) used in Sagami Bay, Japan, from 9 to 13 April 2005 were well correlated (correlation coefficient = 0.72, root mean square dry weight = 2.5 mg m^?3). The horizontal current field and zooplankton distribution were estimated from shipboard ADCP data. Although sea surface temperature and chlorophyll a concentration observed by satellite were consistent with the current field, a counterclockwise circulation associated with the Kuroshio meander, zooplankton were mainly distributed downstream of the phytoplankton population by horizontal current advection.

Keywords:	ADCP backscatter chlorophyll a current field Kuroshio meander Sagami Bay zooplankton