研究目的
Investigating the effects of cold eddies on the Kuroshio meander and changes in its surface water properties east of Taiwan.
研究成果
Cold eddies cause the Kuroshio to meander eastward, reduce its current speed, lower SST, and increase chl-a concentration. The size of the cold eddy affects the shifting distance of the Kuroshio axis. The study contributes to understanding the impacts of cold eddies on the Kuroshio east of Taiwan.
研究不足
The study focused only on the effects of cold eddies on the Kuroshio meander and surface properties, excluding warm eddies. The absence of SST and chl-a data for some cases made it difficult to fully explain the environmental impacts.
1：Experimental Design and Method Selection:
Satellite remote-sensing data and glider data were used to study the Kuroshio meander and surface properties.
2：Sample Selection and Data Sources:
SLA and ADT data from 1993 to 2013, MODIS data for SST and chl-a, and spray glider data for upper layer variations.
3：List of Experimental Equipment and Materials:
Satellite altimeters onboard the ERS-1/2, Envisat, TOPEX/Poseidon, and Jason-1/2 satellites, MODIS instrument onboard the Terra and Aqua satellites, and spray gliders.
4：Experimental Procedures and Operational Workflow:
Analysis of SLA and ADT data to detect eddies and derive absolute velocity, use of MODIS data to examine changes in SST and chl-a concentration, and use of glider data to investigate upper layer variations.
5：Data Analysis Methods:
Calculation of absolute geostrophic velocity from ADT data using geostrophic relations, and statistical analysis of the effects of cold eddies on the Kuroshio meander and surface properties.
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