Dynamic geomorphology and storm response characteristics of the promontory-straight beach-a case of Gulei Beach, Fujian

作     者：Chao Cao Zijian Mao Feng Cai Hongshuai Qi Jianhui Liu Gang Lei Shaohua Zhao Gen Liu Chao Cao;Zijian Mao;Feng Cai;Hongshuai Qi;Jianhui Liu;Gang Lei;Shaohua Zhao;Gen Liu

作者机构：Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China Key Laboratory of Marine Ecological Conservation and RestorationMinistry of Natural ResourcesXiamen 361005China Fujian Provincial Key Laboratory of Marine Ecological Conservation and RestorationXiamen 361005China Fujian Provincial Station for Field Observation and Research of Island and Coastal Zone in ZhangzhouZhangzhou 363200China School of Advanced ManufacturingFuzhou UniversityJinjiang 362200China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2023年第42卷第7期

页      面：64-78页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：The National Natural Science Foundation of China under contract Nos 42076058 and 41930538 the National Key Research and Development Program of China under contract No.2022YFC3106104 the Scientific Research Foundation of Third Institute of Oceanography,Ministry of Natural Resources under contract Nos 2023023 and 2019017 

主　　题：promontory-straight beach dynamic geomorphology storm response Gulei Peninsula 

摘      要：As one of the main areas of tropical storm action in the northwestern Pacific Ocean,South China experiences several typhoons each year,and coastal erosion is a problem,making the area a natural testing ground for studying the dynamic geomorphological processes and storm response of promontory-straight *** study is based on three years of topographic data and remote sensing imagery of Gulei Beach and uses topographic profile morphology,single width erosion-accretion and mean change,combined with the Coastsat model to quantify the seasonal and interannual variability and storm response of the beach and to explain the evolution of shoreline change and beach dynamics geomorphology in the last *** Beach has been in a state of overall erosion and local accretion for a long time,with relatively obvious cyclical changes;seasonal changes are also obvious,which are mainly characterized by summer accretion and winter erosion,with accretion at the top of the bay and accretion and erosion on the north and south sides of the bay corner,respectively;the seasonal erosion-accretion volume of the beach profile ranges from-80 m3/m to 95.52 m3/m,and the interannual erosion-accretion volume ranges from-69.09 m3/m to 87.31 m3/*** response of beaches to typhoons with different paths varies greatly depending on the length,slope,orientation and scale of beach *** large and gently developing Futou beach is less responsive to storms,while the less developed headlands in the southern Gulei Peninsula are more susceptible to disturbance by external factors and respond more strongly to *** distance is more influential than storm *** the influence of human activities,obvious erosion hotspots develop during normal weather,but storm processes produce redistribution of beach material patterns,and erosion hotspots disappear after *** results of this study enrich the theory of beach dynamics geomorphology and provide technical support for dis