Feasibility Study for Detecting Ocean Loading Displacements in the Western Costal Area of Korea Using GPS Measurements

GPS 관측을 통한 한반도 서해안 지역의 해수하중에 의한 지각변위 검출 가능성 조사

The ocean loading displacement of the crust is one of the major error sources in space geodesy techniques. In the western part of the Korean Peninsula, the vertical displacement due to ocean loading reaches up to 3cm. To check out the possibility of correcting the inaccurate ocean tide model in the Yellow Sea, we used four GPS sites to compute the height variations and compared them with the model-predicted ones. The comparison shows relatively good agreement except for small differences in the phase and amplitude.