东海陆架区西部主要地质灾害类型及成因机制研究  

Types and Formation Mechanism of Main Geological Hazards in the Western Continental Shelf Area of the East China Sea

作　　者：乔朋宇 陈珊珊[2] 张勇[2] 徐承芬[2] 孔祥淮[2] 于开宁 QIAO Peng-yu;CHEN Shan-shan;ZHANG Yong;XU Cheng-fen;KONG Xiang-huai;YU Kai-ning(Hebei Center for Ecological and Environmental Geology Research,Hebei GEO University,Shijiazhuang 050031,China;Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266071,China)

机构地区：[1]河北地质大学河北省高校生态环境地质应用技术研发中心,河北石家庄050031 [2]中国地质调查局青岛海洋地质研究所,山东青岛266071

出　　处：《河北地质大学学报》2022年第3期63-72,共10页Journal of Hebei Geo University

基　　金：中国地质调查局海洋调查项目(DD20190205,DD20160137)。

摘　　要：以1∶100万海洋区域地质调查项目在东海西部的实测资料为基础,结合前人前期获得的海洋地质与地球物理等调查成果,识别出了潮流沙脊、浅层气、埋藏古河道等多种海洋地质灾害,编绘了主要海洋地质灾害分布图,系统研究了东海陆架区西部主要海洋地质灾害的类型及其分布特征。对海洋地质灾害的4种成因机制:海平面变化成因、沉积环境成因、水动力作用和堆积侵蚀作用成因、人类活动影响进行深入探讨,分析了海洋地质灾害对海洋工程的危害性,为调查区海域的海洋工程建设提供科学依据。Based on the measured data of the 1:1 million marine regional geological survey project in the west of the East China Sea,combined with the previous marine geological and geophysical survey results,this paper identifies a variety of marine geological hazards such as tidal sand ridges,shallow gas and buried ancient rivers,and compiles the distribution map of main marine geological hazards.The types and distribution characteristics of major marine geological hazards in the west of the East China Sea shelf area are systematically studied.This paper deeply discusses the four genetic mechanisms of marine geological hazards:the causes of sea-level change,sedimentary environment,hydrodynamic and accumulation erosion,and the impact of human activities,and analyzes the harm of marine geological hazards to marine engineering,so as to provide scientific basis for marine engineering construction in the sea area of the survey area.

关 键 词：海洋地质灾害 分布特征 成因机制 浅地层剖面 东海陆架区 

分 类 号：P694[天文地球—地质学] P67