Evolution stages of storm surges over the past millennia recorded by aeolian sands along the coast of Beibu Gulf, Guangxi

被引：0
作者：
Si Y. [1 ]
Li B. [2 ,3 ]
Wang F. [4 ]
Du S. [5 ]
Niu D. [6 ]
机构：
[1] School of Geography and Planning/ Ministry of Education Key Laboratory of Beibu Gulf Environment Change and Resources Use, Nanning Normal University, Nanning
[2] State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi'an
[3] School of Geography, South China Normal University, Guangzhou
[4] School of Geography and Tourism, Huizhou University, Huizhou
[5] Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, CAS, Guangzhou
[6] School of Physics Science & Technology, Lingnan Normal University, Zhanjiang
来源：
Dili Xuebao/Acta Geographica Sinica | 2022年 / 77卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Beibu Gulf in Guangxi; Coastal aeolian sands; Grain size; Heavy mineral assemblage; Over the past millennia; Storm surge;
D O I：
10.11821/dlxb202205010
中图分类号：
学科分类号：
摘要：
The Wutou (WT) section (21°32’8.25″N, 108°06’59.9″E), with a thickness of 393 cm storm sediments located in Jiangping, Guangxi Zhuang Autonomous Region, consists of dune sands-lagoon facies-weak pedogenic sedimentary sequences of the Late Holocene. Based on sedimentary characteristics of storm strata in the field investigation, 6 AMS-14C, OSL dating ages and the analyses of grain size and heavy minerals, the evolution history of storm surges has been reconstructed over the past thousand of years along the coast of the Beibu Gulf in Guangxi. The results show that the storm sediments are characterized as coarse mean grain size and poor sorting, with high maturity of heavy minerals and low stability, which results from quick accumulation caused by the storm surge from the land-facing side of the coastal backside dune sands. Nine storm surge peak periods recorded in the WT section over the past millennia are mainly concentrated within the Little Ice Period after 1400 AD, which are inversely correlated with the trends of SST and ENSO activities in the western Pacific. Some of storm surge peak periods recorded in the WT section and 4 "sea overflow" events from historical documents nearly synchronized with the changes of the sunspot activity. This suggests that the storm surge peak periods revealed by the WT section are probably controlled by the solar activity to a great extent, in addition to the impact of the Western Pacific Warm Pool and ENSO. © 2022, Science Press. All right reserved.
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页码：1181 / 1194
页数：13
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