渤海海域地质环境稳定性定量评价  

Quantitative evaluation of the geological environment stability in the Bohai Sea

作　　者：陈晓辉 李日辉[1,2] 温珍河 付军 徐晓达 CHEN Xiaohui;LI Rihui;WEN Zhenhe;FU Jun;XU Xiaoda(Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266237,China;Laboratory for Marine Mineral Resources,Qingdao Marine Science and Technology Center,Laoshan Laboratory,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]崂山实验室,青岛海洋科技中心海洋矿产资源评价与探测技术功能实验室,青岛266237

出　　处：《海洋地质前沿》2024年第3期14-21,共8页Marine Geology Frontiers

基　　金：山东省自然科学基金“黄河三角洲周边海域灾害地质因素定量研究”(ZR2022MD098);中国地质调查局项目“1:25万东海重点海域海洋区域地质调查”(GZH201500203),“全国陆域及海区地质图件更新与共享”东部海区区域地质志项目(DD20190377),“东部重点海域海洋区域地质调查”(DD20221710)。

摘　　要：渤海地理位置优越,海洋经济发展迫切需要地质环境资料的支撑,现有研究通常分海区开展,缺乏实测资料支持的系统性研究。基于2008—2016年海洋区域地质调查环境地质因素的相关资料,通过网格化处理,量化渤海海域主要环境地质因素的特征参数,建立了以海底地形或底质环境变化类、地层不均衡类、活动构造类为主要评价指标的地质环境稳定性评价指标体系,采用专家-层次分析定权法和模糊数学评价方法对研究区地质环境稳定性进行定量评价研究。结果显示,渤海海域依据地质环境稳定性可划分为差等、较差、中等、较好、优等5级,大部分海域地质环境稳定性总体较好,地质环境稳定性较差的海域占比10.00%,尤其是黄河三角洲周边海域,不稳定环境地质因素活动断层、地震震中、浅层气及与潮流相关的环境地质因素较为集中,危险性较大。研究结果对渤海海域自然资源的开发利用、生态环境保护等具有重要的应用价值,相关定量评价方法可为中国海洋环境地质研究提供借鉴。The Bohai Sea has a superior geographical position.The development of its marine economy asks urgently for the support of geological environment data.Most present studies usually are concentrated on some individual seas,and lack of the systematic thinking of different seas using actual testing data.Based on the available data of environmental geological factors in marine regional geological survey since 2008,The Bohai Sea was divided into grid cells and the characteristic parameters of its main environmental geology factors were quantified.An indicator system of the evaluation of the geological environment stability was established based on the topographic or ground environmental change,uneven bearing stratum,and active tectonics.The geological environment stability in the study area was quantitatively evaluated by using expert-analytic hierarchy process and fuzzy mathematics.Results suggest that the geological environment stability in Bohai Sea was divided into five grades:poor,relatively poor,medium,relatively good,and excellent.The stability in most of Bohai Sea is generally in good condition at the present.The regions in poor and relatively poor grades of stability accounts for 10%,particularly in the adjacent area of the Yellow River Delta,where the unstable environmental geology factors active faults,earthquake epicenter,shallow gas and the factors related to the tide are comparatively dense,with relatively large hazard.This study is valuable for future exploitation and utilization of natural resources,eco-environment conservation in Bohai Sea.Meanwhile,the quantitative evaluation method of this study provided a reference for the study of marine environmental geology.

关 键 词：渤海 环境地质因素 地质环境稳定性 定量评价 

分 类 号：P736[天文地球—海洋地质]