OSL dating of coastal dunes on the southeastern coast of Hainan Island, China

Frontiers in Marine Science

Marine Science

Changliang Tong¹  Gaocong Li²  Liang Zhou³  Yang Yang⁴ 

[1] Hainan Key Laboratory of Marine Geological Resources and Environment, Hainan Marine Geological Survey Bureau, Haikou, China;Hainan Key Laboratory of Marine Geological Resources and Environment, Hainan Marine Geological Survey Bureau, Haikou, China;Department of Marine Technology, Guangdong Ocean University, Zhanjiang, China;Hainan Key Laboratory of Marine Geological Resources and Environment, Hainan Marine Geological Survey Bureau, Haikou, China;School of Geography, Geomatics, and Planning, Jiangsu Normal University, Xuzhou, China;Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, China;School of Marine Science and Engineering, School of Geography, Nanjing Normal University, Nanjing, China;

关键词: palaestorm events;    southeastern Hainan Island;    OSL dating;    East Asian winter monsoon;    coastal dune;   

DOI  :  10.3389/fmars.2023.1165551

 received in 2023-02-14, accepted in 2023-04-21,  发布年份 2023

来源: Frontiers

【 摘 要 】

Coastal dune sediments and landforms offer a unique opportunity to understand climate change and sea level change on the centennial-millennial time scale. However, there is a paucity of chronological studies on the effects of storms on the evolution of coastal dunes along the temperate coastline of China. In this study, optically stimulated luminescence (OSL) dating of sand dunes was conducted to investigate the process and mechanism of coastal dune evolution on the southeastern coast of Hainan Island, China. The results show that the coastal dune evolution experienced three rapid accumulation periods: 28-21 ka, 14-4 ka, and 3.0 ka-present. The three rapid accumulation periods correspond to the last glacial maximum, the late Pleistocene/early-mid Holocene, and the late Holocene climatic dry-cold period, respectively. Sea level change and the East Asian winter monsoon, in conjunction with the enhanced storminess, play a key role in driving the sand dune evolution on the south-eastern coast of Hainan Island. These findings are of great significance for regional planning and coastal defense schemes.

【 授权许可】

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Copyright © 2023 Zhou, Yang, Li and Tong