抄録
In order to elucidate the maintenance mechamism of abrupt large change of temperature and salinity across the Kuroshio front, measurements off sea surface current field and its temporal change were made in the sea south of the Yakushima Island from October 9 to December 7, 1992, using the HF ocean Radar system, developed at the Okinawa Radio Wave Observatory, CRL. From 10-minute mean line-of-sight component of currents measured by two independently scanning HF Radars located 10 km apart to each other at the coast of Yakushima Island, we have estimated horizontal current. vectors. hourly at grided points of 2 km interval in 50 × 20 km area. The horizontal divergence was found to have positive and negative maximum values alternately along the front rather than a narrow convergence zone along the front.
