2:40 PM - 2:55 PM
[AOS08-04] The Joint Kuroshio–Ryukyu Current System Study and a rapid report about mooring observations southeast of Miyakojima
In this talk, we will illustrate the velocity structure and variability of the Ryukyu Current by analyzing the 2-year record from a mooring array southeast of Miyakojima Island. The results showed that the shoreward intensified currents flowed northeastward. The subsurface core of the Ryukyu Current was located near the 1000 m isobath, with a maximum of 19.4 cm/s at 500 m. The observed velocity structure was reproduced well by the HYCOM reanalysis, except that the observed current core was stronger and shallower. The mean estimated volume transport across the observation section was 9.0 Sv with a standard deviation of 8.7 Sv, with a near 100-day variability dominant in the upper layer but absent in the deep layer.