• Shao Chongjian

      Articles written in Journal of Earth System Science

    • Mechanism of post-seismic floods after the Wenchuan earthquake in the upper Minjiang River, China

      Ding Hairong Li Yong Shao Chongjian Lauvence Svirchev Xu Qiang Yan Zhaokun Yan Liang Ni Shijun Shi Zeming

      More Details Abstract Fulltext PDF

      By analyzing the multi-year runoff and rainfall data at 15 hydrological stations from 1980 to 2007, as well as monthly runoff data from 1964 to 1984 at the Zipingpu hydrologic station, the relationship between precipitation and runoff has been established and the trend was explored. Based on the catastrophic floods of August 13 and August 18, 2010, characteristics and control factors on the post-seismic floods are summarized. Firstly, the Wenchuan earthquake and rupture zone provides the background for post-seismic floods to develop in the upper Minjiang River, which follows a post-seismic disaster-chain pattern: earthquake collapse to landslide debris flows to floods. Secondly, heavy rainfall controlled by the orographically-enhanced precipitation after the Wenchuan earthquake is the trigger factor for the development of devastating post-seismic floods. Thirdly, the post-seismic floods contain high sediment discharge, cause abrupt and severe damages, and have a large of volume and higher frequency.

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