Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (6): 171-182.doi: 10.11978/2022016CSTR: 32234.14.2022016

• Marine Meteorology • Previous Articles     Next Articles

Reconstruction of the tropical cyclones activity in the Nansha Islands since the Little Ice Age from the atoll lagoon sediments

YANG Hongqiang1,2,3(), TAN Fei1,2,4, XU Huilong1,2, ZHANG Xiyang1,2, SHI Qi1,2, TAO Shichen1,2   

  1. 1. Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
    2. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
    3. Nansha Marine Ecological and Environmental Research Station, Chinese Academy of Sciences, Sansha 573199, China
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-01-27 Revised:2022-04-14 Online:2022-11-10 Published:2022-04-18
  • Contact: YANG Hongqiang E-mail:hqyang@scsio.ac.cn
  • Supported by:
    Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0206);Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences(ISEE2018PY01);Strategic Priority Research Program of the Chinese Academy of Sciences(XDA13010103)

Abstract:

Tropical cyclones (TCs) and the resultant storm surges and heavy rainfall have posed huge socio-economic threats to the coastal areas of the South China Sea (SCS) and its surrounding areas. Holocene TCs studies before instrumental record help to accurately predict trends in TCs activity in the context of global warming. Here, we presented a new sub-annually resolved paleostorm record from the Anle reef lagoon sediments of the Nansha Islands in the southern SCS since the relative cold Little Ice Age (LIA) and a total of 28 storm event layers were identified. The new reconstruction indicates that the site has witnessed frequent TCs variations on a decadal to centennial-scale since the LIA, and two main storm active periods have been developed. The most intense storm activity period occurred in the early LIA (AD 1471~1620), and the other relatively active period was witnessed in the Current Warm Period (CWP) of AD 1930~1960. Although the storm activity in CWP was strengthened, it was significantly lower than that in the early LIA. Regional comparison with the storm reconstruction record of the Yongshu Reef during the same period reveals distinct spatio-temporal heterogeneity in the southern SCS. More high-resolution storm records from similar or adjacent regions could effectively reduce the uncertainty of storm reconstructions and increase the accuracy of reconstructed records.

Key words: tropical cyclones, Little Ice Age, lagoon sediments, paleostorm, Nansha Islands, South China Sea

CLC Number: 

  • P722.7