基于高密度电法的滨海地区地下淡水体识别  

Identification of underground freshwater bodies in coastal areas based on high-density resistivity

作　　者：徐喆 杨娇娇 刘荣波 林哲远 曹珂 周宇渤[1] 张朋[1] 王圣民 李昂[1] 郑鸿杰[1] XU Zhe;YANG Jiaojiao;LIU Rongbo;LIN Zheyuan;CAO Ke;ZHOU Yubo;ZHANG Peng;WANG Shengmin;LI Ang;ZHENG Hongjie(Zhejiang Institute of Hydrogeology and Engineering Geology,Zhejiang Ocean Exploration and Research Institute,Ningbo 315000,China;Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266237,China;Weifang Key Laboratory of Coastal Groundwater and Geological Environmental Protection and Restoration,Weifang 261021,China)

机构地区：[1]浙江省水文地质工程地质大队,浙江省海洋勘测研究院,宁波315000 [2]中国地质调查局青岛海洋地质研究所,青岛266237 [3]潍坊市地下水及地质环境保护重点实验室,潍坊261021

出　　处：《海洋地质前沿》2022年第6期47-53,共7页Marine Geology Frontiers

基　　金：中国地质调查局项目“浙江中部海岸带综合地质调查”(DD20190276)。

摘　　要：滨海地区地下淡水体的识别研究,可有效指导地区寻找淡水资源。阐述了高密度电法在滨海地区识别淡水体的理论依据,该方法在研究区的实例分析表明,高密度电阻率法能够很好地识别出咸淡水界面,进而划分出淡水层的分布。研究结果与水文地质调查成果基本吻合,说明该方法在滨海地区具有较好的可行性和有效性。此外,总结了该地区的淡水体电性特征和垂向分布情况,可为开展区域水文地质调查研究提供可靠的基础资料。The identification of underground freshwater bodies can assist us effectively to find freshwater resources in coastal areas.In this article,we present the theoretical basis of high-density resistivity method for identifying freshwater bodies in coastal areas.The result shows that the method could distinguish the freshwater-saltwater interface,with which freshwater layer can be clearly shown on the profile of high-density resistivity inversion,from which freshwater distribution can be effectively delineated.In addition,the results agree well with the hydrogeological survey results,indicating that this method is feasible and effective in coastal areas.At last,the electrical characteristics and vertical distribution of freshwater bodies were summarized.This study provided reliable basic data for regional hydrogeological survey and exploration.

关 键 词：滨海地区 高密度电法 淡水体 咸淡水界面 

分 类 号：P748[天文地球—海洋科学] X83[环境科学与工程—环境工程]