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Investigation of Local Tsunami Effect on Coastal Areas: A Case Study of Putian City, Fujian Province, China

Author

Listed:
  • Tingting Fan

    (National Marine Environmental Forecasting Center, Beijing 100081, China)

  • Jingming Hou

    (National Marine Environmental Forecasting Center, Beijing 100081, China
    Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Beijing 100081, China)

  • Zhiguo Xu

    (National Marine Environmental Forecasting Center, Beijing 100081, China
    Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Beijing 100081, China)

  • Yuchen Wang

    (Japan Agency for Marine-Earth Science and Technology, Yokohama 236-0001, Japan)

  • Lianda Zhao

    (National Marine Environmental Forecasting Center, Beijing 100081, China
    Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Beijing 100081, China)

  • Yi Gao

    (National Marine Environmental Forecasting Center, Beijing 100081, China
    Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Beijing 100081, China)

  • Peitao Wang

    (National Marine Environmental Forecasting Center, Beijing 100081, China
    Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Beijing 100081, China)

Abstract

In this paper, we explored the local tsunami hazards induced by an active local seismic Quanzhou fault, along the coastlines of the City of Putian, Fujian Province, in the southeast of China. The simulation results indicated that the tsunami wave will hit the nearest coast of Putian 0.5 h after the earthquake occurs. The most serious tsunami inundation depth in Putian was less than 3.0 m. This study also conducted a sensitivity test of the tsunami amplitude and inundation in response to different seismic source parameters, particularly the rake and strike angles of the Quanzhou fault. Based on the post-earthquake survey and the most updated geophysical data, the uniform dislocation distribution is applied in the range of scientific geometrical characteristic parameters for numerical modeling. A 20° change in the rake angle increases the inundation area from 50.0 km 2 to more than 100.0 km 2 , and increases the tsunami amplitude from 0.2 m to 1.0 m. In this study, the tsunami hazard of Putian is more sensitive to the rake than to the strike angle for a local fault. Tsunamis generated by seismic fault could also result in serious coastal flooding along the coastlines locally, and the time for emergency response is limited. The research results could provide technical support for refining local tsunami hazard assessment and contingency plans, to save decision-making time and avoid waste of social resources.

Suggested Citation

  • Tingting Fan & Jingming Hou & Zhiguo Xu & Yuchen Wang & Lianda Zhao & Yi Gao & Peitao Wang, 2022. "Investigation of Local Tsunami Effect on Coastal Areas: A Case Study of Putian City, Fujian Province, China," Sustainability, MDPI, vol. 15(1), pages 1-14, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2022:i:1:p:415-:d:1016139
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    References listed on IDEAS

    as
    1. Sum Mak & Lung-Sang Chan, 2007. "Historical tsunamis in South China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 43(1), pages 147-164, October.
    2. Xi Zhao & Yunpeng Jiang & Zhiyuan Ren & Hua Liu, 2017. "Historical tsunami records and potential tsunami scenarios near Haikou coastal region," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 89(2), pages 625-645, November.
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