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Liang Zhou, Xiaomei Xu, Ya Ping Wang, Jianjun Jia, Yang Yang, Gaocong Li, Changliang Tong, Shu Gao. Tracking historical storm records from high-barrier lagoon deposits on the southeastern coast of Hainan Island, China[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-021-1833-z
Citation: Liang Zhou, Xiaomei Xu, Ya Ping Wang, Jianjun Jia, Yang Yang, Gaocong Li, Changliang Tong, Shu Gao. Tracking historical storm records from high-barrier lagoon deposits on the southeastern coast of Hainan Island, China[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-021-1833-z

Tracking historical storm records from high-barrier lagoon deposits on the southeastern coast of Hainan Island, China

doi: 10.1007/s13131-021-1833-z
Funds:  This work is supported by the National Natural Science Foundation of China under contract Nos 41706096 and 41530962; Research Start-up Project of Jiangsu Normal University (19XSRX006); Opening Foundation of Hainan Key Laboratory of Marine Geological Resources and Environment (HNHYDZZYHJKF005); the High-level Talent Program of Basic and Applied Basic Research Programs (Field of Natural Science) in Hainan Province (No. 2019RC349).
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  • Corresponding author: E-mail: sgao@sklec.ecnu.edu.cn
  • Received Date: 2021-02-05
  • Accepted Date: 2021-03-10
  • Available Online: 2021-07-02
  • The relationship between storm activity and global warming remains uncertain. To better understand storm–climate relationships, coastal lagoon deposits are increasingly being investigated because they could provide high-resolution storm records long enough to cover past climate changes. However, site-specific sediment dynamics and high barriers may bias storm reconstructions. Here, we aimed to investigate these factors through the reconstruction of five distinct storm records (XCL-01, XC-03, XC-06, XC-07, XC-08) from different water depths in a lagoon with a high barrier (i.e., Xincun Lagoon of Hainan Island). Sediment cores were characterized using high-resolution grain size and XRF measurements, to identify storm events. These data were coupled with a numerical simulation to obtain bed shear stress data with high-spatial resolution to better understand storm-induced sediment transport mechanisms. 210Pb dating and Pb pollution chronostratigraphic markers indicated that the chronology of the storm deposit sequences of the cores span the period between 117 a and 348 a. The grain size and XRF results indicated numerous, highly variable and short-duration fluctuations, suggesting that storm-induced coarse-grained sediments were deposited at these core sites. The inconsistent storm events recorded in these cores suggest that these sites have different preservation potentials for storm deposits. However, the consistence between storm sediment records and historical documents for core XCL-01 indicates that high-barrier lagoons could provide long-term storm event records with high preservation potential.
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