2006년 태풍 에위니아에 대한 동중국해의 반응

Abstract

AB: Response of the upper ocean to the typhoon Ewiniar 2006 in the northern East China Sea (ECS) has been investigated using observations at Ieodo Ocean Research Station (IORS) and TRMM Microwave Imager (TMI) data. Typhoon Ewiniar 2006 lasted about twelve days since it was born near the Micronesia in the Western Pacific. It moved generally northward and it was less than two days on the ECS until it made a landfall on the western region of Korea. Evidences of the interaction between the typhoon Ewiniar and the ECS have been found at the data gathered IORS, especially when the distance between the Ewiniar and IORS was shortest (less than 70 km). The water temperature drop in the upper layer was very large as much as about 9 - 10 ° C during 15 hours. The TMI sea surface temperature supports this evidence showing about 7.6 ° C drop of the water temperature during a day. Though the cooling of upper ECS seems to be happened along the entire Ewiniar track in the ECS, the temperature drop range was not as high as at the IORS. Waters around ECS shelf near to the IORS affected much more because of relatively shallow water depth with thin mixed layer as well as cold and relatively saline bottom waters underlying it. It should be noted that this strong influence of the typhoon Ewiniar on the ECS shelf plays a negative feedback to the Ewiniar intensity resulting in rapid weakening of its strength. The interaction between the Ewiniar and the waters around the IORS is larger