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Journal of Taiwan Fisheries Research
Preliminary Study on the Existence of a Cold Eddy Related to the Distributions of Mackerel and Scad in the Waters off Northeastern Taiwan During Spring and Summer 2005
- Date：2006-12-30
- Volume：14
- No：2
- Page：15-25
- Auther：Chia-Lin Lee, Yu-Tzu Wang, Sew-Horng Wu and Chen-T
To determine the characteristics of upwelling, located at 24.5°~27°N and 121°~123.5°E, and its effect on the distribution of mackerel and scad , 138 survey stations from four cruises in March, April, June, and July 2005 were sampled in the waters off northeastern Taiwan. Depth, seawater temperature, and salinity were collected by (CTD). Based on the data analyzed, the upwelling of a cold eddy was found to exist on all four cruises. The strongest cold eddy existed at depth of 40~60 m in the waters off northeastern Taiwan. The best habitat area for mackerel and scad was evaluated at depths of 100~200 m at 16-32 km from the center of the cold eddy position. The location of the cold eddy can be used as a reference when searching for mackerel and scad schools.