한반도주위 동아시아 몬순진화와 고기후변화를 위한 해양연구 계획

Abstract

Korea Ocean Research & Development Institute (KORDI) develops on three year research program which titled on East Asia Monsoon evolution and paleoclimate changes adjacent to Korean Peninsula. This program will be covered on wide area through the East Asia including East Sea (Sea of Japan), East China Sea, aeolian dust fields and Inland lakes such as Upo in Korea, Bikal in Russia and Biwa in Japan. The program has not only focused on reconstruction of paleoclimate and monsoon history from the long core sediments since late Cenozoic but also delineate to paleoclimate numerical model during the mid-Holocene and the Last Glacial Maximum (LGM). In the 1st year, we had 5 piston cores from the East Sea with different water depths from 667m to 2,247m deep, and will analyze to each geological, geochemical and paleontological components to reconstruct paleoenvironments and paleoclimatic evolution. In case of model study, there have been many studies of the monsoon circulation changes during the mid-Holocene and the Last Glacial Maximum (LGM) using numerical models. The models used in the previous studies, however, have relatively low resolutions (usually greater than 200 km) and they cannot represent detailed regional climate change features like the monsoon. In order to capture detailed features of the Asian monsoon circulation and associated climate changes, this study adopts a high-resolution climate model and attempts to investigate the mechanism which is responsible for the change in wind fields and precipitation during the mid-Holocen and the LGM. Proposed three year research program from KORDI is shown in following project road map in detail.