Journal of Oceanography, Vol. 50 (No. 6), pp. 643-651, 1994
Tetsuo Yanagi and Tatsuya Akaki
Department of Civil and Ocean Engineering, Ehime University, Matsuyama 790, Japan
(Received 25 November 1993; in revised form 7 April 1994; accepted 22 June 1994)
Abstract: Mean sea level variations in the eastern Asia region during 1950 to 1991 are investigated with the use of observed sea level data at 16 stations. It is suggested from the data analysis, that the main cause of long-term sea level variation in this region may be the plate tectonic processes. The mean sea levels along the eastern coasts of Japan and the Philippines, and that along the southern coast of Indonesia have risen due to the subsidence of Pacific, Philippine and Australian plates under the Eurasian plate, respectively. On the other hand, the mean sea levels along the western coasts of Japan and the Philippines, and that along the northern coast of Indonesia have fallen. The distribution map of mean sea level rise at the year 2030 from 1985 in this region is presented on the basis of the results of this work and IPCC (1990).