1. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, HKSAR 111, China
2. China Institute of Water Resources and Hydropower Research, A-1 Fuxing Rd., Haidian District, Beijing 100038, China
3. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, HKSAR 111, China (Corresponding author), e-mail: ceyhwang@ust.hk, https://orcid.org/0000-0001-7829-2750