海南岛北部全新世最大海侵古岸线的发现及其意义  

Maximum transgression paleocoastline in the Holocene in northern Hainan Island:Discovery and implications

作　　者：张磊 王超群[1] 麦发海[4] 贾丽云 孙东霞[1,2,3] 张耀玲 杨肖肖 韩建恩[1] 韩帅 吕同艳 杜建军[1] 赵希涛 胡道功[1,2,3] ZHANG Lei;WANG Chaoqun;MAI Fahai;JIA Liyun;SUN Dongxia;ZHANG Yaoling;YANG Xiaoxiao;HAN Jian’en;HAN Shuai;LÜTongyan;DU Jianjun;ZHAO Xitao;HU Daogong(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing,100081;Key Laboratory of Active Tectonics and Geological Safety,Ministry of Natural Resources,Beijing,100081;Research Center of Neotectonism and Crustal Stability,China Geological Survey,Beijing,100081;Hainan Geological Survey and Design Institute,Haikou,570206;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]自然资源部活动构造与地质安全重点实验室,北京100081 [3]中国地质调查局新构造与地壳稳定性研究中心,北京100081 [4]海南省地质综合勘察院,海口570206 [5]中国科学院地质与地球物理研究所,北京100029

出　　处：《地质论评》2022年第6期2269-2276,共8页Geological Review

基　　金：国家自然科学基金资助项目(编号:41807421);中国地质调查局地质调查项目(编号:DD20190306)的成果。

摘　　要：全新世大暖期的最大海侵对沿海地区具有深刻影响,但是海南岛北部全新世的最大海侵范围研究较少。本研究利用高精度DEM数据解译以及野外钻探验证,发现海南岛北部全新世精确的最大海侵古岸线空间展布位置,其总面积约260 km^(2),其中约115 km^(2)属于现今的江东新区规划建设范围内,占整个江东新区规划面积的38%。海南岛北部全新世最大海侵古海岸线的发现,不仅对理解南海全新世高海平面特征及规律提供琼北地区新证据,并且对海南自贸区(江东新区)应对未来海平面升高问题提供背景参照。The maximum transgression during the Holocene warm period has a profound impact on the coastal areas,however,there are few studies on the shape of the maximum transgression in the north of Hainan Island.In this paper,combining with the interpretation of high-resolution DEM data and field drilling verification,the spatial distribution position of the precise maximum transgressive paleocoastline in Holocene in the north of Hainan Island was discovered.The total area of the largest transgression area is about 260 km^(2),of which about 115 km^(2)belongs to the current planning and construction scope of Jiangdong New District,accounting for 38%of the planned area of the whole Jiangdong New District.The discovery of the Holocene maximum transgressive paleocoastline in northern Hainan Island not only provides new evidence for understanding the characteristics and laws of Holocene high sea level in the South China Sea,but also provides a background reference for Hainan Free Trade Port(Jiangdong New District)to deal with the problem of sea level rise in the future.

关 键 词：相对海平面变化 古海岸线 江东新区 南海 全新世 

分 类 号：P736.22[天文地球—海洋地质]