Abstract
Kuroshio Current in the southwest of East China Sea is continuously observed by Long-Range Ocean Radar (LROR) that National Institute of Information and Communications Technology (NICT) is developing for measuring Sea surface: cuurrents and waves at lie coast and ocean. By the continuous observations, it is clarified that Kuroshio has two current patterns. In addition, to evaluate the influence of Kuroshio at the coastal region, the current patterns of Kuroshio are compared with the sea level at Ishigaki Island and Yonaguni Islands. As a result of these comparisons, it is clarified that the abnormal sea level at the costal region of Ishigaki and Yonaguni Islands depends on the variation of Kuroshio.