Seasonal variation of sea-level along the Japanese coast

Abstract

Annual and semi−annual variations of sea−level along the Japanese coast are investigated. The Japanese coast is divided into eight areas by the amplitude level of annual variation. Distribution of the amplitude / phase in annual variation for coastal sea−level almost coincides with one forsea surface height anomaly at coastal region from satellite altimeter with some bias. It is indicated from distribution of the amplitude / phase of annual variation in sea surface height anomaly that the variation along the Japanese coast is affected by ocean currents such as the Kuroshio and the Tsushima Warm Current