동해남부해상의 기상특성

Abstract

As the Southeastern Sea is a sea area where the cold current meets the worm current, coincidently, the severe weathers and long waves which are be threatened the safety of ships frequently occur in this sea. The purpose of this study is to find how the Southeastern Sea impacts on weather events for investigating this area's environmental conditions. In this purposes the data of Ministry of Maritime Affairs, Fisheries and National Oceano- graphic Research Institute and Korea Meteorological Administration are analyzed and focused on atmospheric phenomena in the sea. The prevailing wind of this sea is a southwesterly wind and/or a northeasterly wind in Spring and a northeasterly wind in Summer, but a northeasterly wind and/or a southwesterly wind in Fall and a southwesterly wind in Winter. A southwesterly wind blows most frequently through years. An upswing of temperature is randomly occurred by Fohn which a southwesterly wind was flown over the Southeastern Sea. And also when a northeasterly wind and/or northerly wind is flown from the Southeastern Sea, the change of the temperature by the prevailing wind is a great rising because an upswing of temperature is hindered. A 90 percent of sea fog is happened during April to August, but a sea fog almost has not appeared from September to March in the this Sea. It shows characteristic that many sea fog days are appeared by the gap of temperature between warm air of the southerly wind and cold air of the northerly wind and sea fog did rarely appear in a sea wind by the easterly wind. A sea fog has appeared when a normal year water temperature is lower 0.5~2.4℃ than average water temperature. The bigger gap is appeared extensive sea fog. Although the wave height of the coast of the southeastern peninsula is lower temporary when a northeasterly wind has flown into Southeastern Sea long time, constantly high wave heights are appeared by the in draft to the coast from the offing. And the strong wind of the offing corresponds with a point of start and end time of high wave heights. In case of the typhoon which trespass through the Korean peninsula, long wave appears at the front of typhoon movement by flowing northeasterly wind, and when developed typhoon goes through the Straits of Korea to Donghe(East sea), the second wave is occurred by rising sea level and continued during about 2~3 days.