南黄海地形地貌特征及其成因探讨  

A study on the characteristic and its cause of topography and geomorphology of the South Yellow Sea

作　　者：孔祥淮[1,2] 陆凯 徐晓达[1,2] 杨慧良 张勇 尚鲁宁 KONG Xianghuai;LU Kai;XU Xiaoda;YANG Huiliang;ZHANG Yong;SHANG Luning(Qingdao Institute of Marine Geology,CGS,Qingdao 266237,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China)

机构地区：[1]中国地质调查局青岛海洋地质研究所,青岛266237 [2]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,青岛266237

出　　处：《海洋地质与第四纪地质》2022年第6期21-31,共11页Marine Geology & Quaternary Geology

基　　金：中国地质调查局地质调查项目(DD20221710,DD20190205)。

摘　　要：利用多年来大量的实际调查资料并结合以往的研究成果,对南黄海海底地形进行了分区研究,经过地貌分析、地貌单元识别,划分了地貌类型,并探讨了地形地貌的成因。结果表明,南黄海海底地形可以划分为6个地形单元,西部自北向南分别为山东半岛东部水下泥楔地形区、海州湾缓倾斜地形区和苏北岸外舌状地形区;中部纵列的两个地形区分别为平坦的浅海平原地形区和低洼的黄海槽地形区;东部为坡度较大的斜坡-沟槽地形区。海底总体地势由西、北、东三面向中部和东南方向缓慢倾斜,西部坡度比较平缓,东部相对较陡。地貌类型中规模较大的三级地貌有11种,黄海槽谷中心线以西以堆积、侵蚀-堆积地貌为主,以东以构造-堆积地貌为主;南黄海现代海底地形地貌的发育,主要受区域构造、海平面升降变化、海洋水动力和物源等因素控制。In this paper,based on a large number of actual survey data over the years and combined with previous research results,the sea bottom topography and geomorphology of the South Yellow Sea are studied.The results show that the sea bottom topography of the South Yellow Sea is classified into 6 units.In the western South Yellow Sea,there are underwater mud wedge terrain area of east Shandong Peninsula,gentle-dipping terrain area in the Haizhou Bay and tongue-shaped terrain area off the coast of Jiangsu Province.In the middle South Yellow Sea,there are the terrain areas of shallow plain and the Yellow Sea Trough.And there is slope-trench terrain area in the eastern of South Yellow Sea.The sea bottom slops down gradually from west,north and east to the center and the south-east.The western slop is smooth terrain,but the eastern slop is relatively steep.There are 11 geomorphologic types on the sea bottom of the South Yellow Sea,dominated by accumulation,erosion-accumulation type of geomorphology in the west of the central line of the Yellow Sea Trough Valley,and in the east,dominated by tectono-accumulative geomorphology.The evolution of sea bottom topography and geomorphology of the South Yellow Sea is mainly controlled by regional structure,sea level fluctuation,ocean hydrodynamics and material sources.

关 键 词：地形 地貌 潮流沙脊 黄海槽 南黄海 

分 类 号：P736.2[天文地球—海洋地质]