Analysis of the Vorticity and Divergence Characteristics of Ocean Surface Currents During the Typhoon Period

Abstract

The analysis of the vorticity and divergence characteristics of ocean surface currents to the typhoon Lionrock is analyzed using six days’ currents data measured by high frequency surface wave radar (HFSWR) in the south-western Taiwan Straits. Analysis shows that significant changes of ocean surface currents are captured by HFSWR during the typhoon period. Nearly doubled vorticity and divergence values are induced by Lionrock. Strong anti-clockwise rotated vorticity values are observed during the typhoon period. And greatly strengthened positive divergence is also captured at the central observation area of the typhoon period.