Affiliation: | 1. Department of Geography, Seoul National University, Sillim‐dong, Gwanak‐gu, Seoul, Republic of Korea;2. Department of Geological Sciences, Pusan National University, Busan, Republic of Korea;3. Quaternary Geology Research Department, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, Republic of Korea;4. Department of Geography, Kyung Hee University, Seoul, Republic of Korea |