1. School of Earth and Environmental Sciences; Seoul National University; Seoul Korea
2. Laboratoire LOCEAN-IPSL, Sorbonne Universités (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN; Paris France
3. MERCATOR-OCEAN, Parc Technologique du Canal; Ramonville St. Agne France
4. Research Institute of Oceanography, Seoul National University; Seoul Korea
5. Now at GeoSystem Research Corporation; Gunpo Korea