Tso-Ren Wu¹, Meng-Ru Chung², Tien-Chi Liu³, Yu-Lin Tsai¹, Chun-Wei Lin⁴, Mei-Hui Chuang⁴, Kuo-Fong Ma⁵ and Shiann-Jong Lee⁶, (1)NCU National Central University of Taiwan, Graduate Institute of Hydrological and Oceanic Sciences, Jhongli, Taiwan, (2)National Central University, Graduate Institute of Hydrological and Oceanic Sciences, Chongli, Taiwan, (3)National Central University, Taoyuan, Taiwan, (4)NCU National Central University of Taiwan, Institute of Hydrological and Oceanic Sciences, Jhongli, Taiwan, (5)National Central University, Department of Earth Sciencces, Taoyuan, Taiwan, (6)NCU National Central University of Taiwan, Jhongli, Taiwan