Juyeon Lee¹, Minjune Yang², Subeen Kim¹ and Changmin Kim³, (1)Pukyong National University, Division of Earth Environmental System Science, Busan, South Korea, (2)Pukyong National University, Department of Earth and Environmental Sciences, Busan, South Korea, (3)Pukyong National University, Division of Earth Environmental System Science, Busan, Korea, Republic of (South)