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Storm deposition layer on the Fujian coast generated by Typhoon Saola(2012)

Yunhai Li  Haidong Li  Lei Qiao  Yonghang Xu  Xijie Yin  Jianhua He  
【摘要】:Typhoons have a significant effect on the marine depositional environment and depositional process.In this paper,we used the high-resolution Chirp sonar sub-bottom profiler and radioisotope detection techniques to examine the storm-deposited layer formed in the seawater near the path of Typhoon Saola along the coast of Fujian,China.The thickness of the typhoon-deposited layer acquired using these two methods was 10-25 cm.The thickness,sediment grain size,and δ~(13)C values of the deposited sedimentary layer indicated that it was mainly matter from the re-suspension and redistribution of seafloor sediments.The particle sizes of the sediments in the storm-deposited layer became coarser,indicating that the fine-grade compositions spread over a wider range out of the coastal zone.

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