自然电位法在海洋矿产勘探中的理论、正反演计算及应用进展  

A review on theory,modeling,inversion,and application of self-potential in marine mineral exploration

作　　者：谢静 崔益安[1,2,3] 柳建新[1,2,3] 郭友军 张丽娟[1,2,3] 罗议建 张鹏飞 Jing XIE;Yi-an CUI;Jian-xin LIU;You-jun GUO;Li-juan ZHANG;Yi-jian LUO;Peng-fei ZHANG(School of Geosciences and Info-physics,Central South University,Changsha 410083,China;Hunan Key Laboratory of Nonferrous Resources and Geological Disaster Exploration,Changsha 410083,China;Key Laboratory of Metalorganic Prediction of Nonferrous Metals and Geological Environment Monitoring,Ministry of Education,Central South University,Changsha 410083,China)

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]湖南省有色资源与地质灾害探查湖南省重点实验室,长沙410083 [3]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2023年第4期1214-1232,共19页中国有色金属学报（英文版）

基　　金：funded by the National Natural Science Foundation of China(Nos.42174170,41874145,72088101)。

摘　　要：自然电位法是一种被动地球物理勘探方法,其通过在地表、井中或(海)水中测量由电化学、电动和热电机制引发的自然电位异常进而开展相关勘探工作。自然电位法与地下水流及(电)化学梯度有直接关联,已在矿产勘探、环境调查以及水文地球物理问题中受到越来越多的关注和应用。本文主要回顾自然电位法在矿产勘探领域的源机制、数值模拟和反演解释理论,以及该方法在矿产勘探中的应用。同时,总结3个海底硫化物矿床勘探案例,以说明自然电位法在海洋矿产勘探中的特点及应用效果。本研究对探讨自然电位法在深海找矿中的应用具有重要意义。The self-potential(SP)method is one of the passive geophysical exploration techniques,which employs measurements of naturally occurring electric potential differences on the ground surface and in boreholes or(sea-)water due to causative sources from electrochemical,electrokinetic,and thermoelectric mechanisms.SP signals are directlyrelated to groundwater flow and(electro-)chemical gradient.There has been increasing interest in the application of SP measurements in mineral exploration,environmental surveys,and hydrogeophysical problems.This review focuses primarily on the theory concerning the causative source mechanism,numerical modeling,and inversion and interpretation of SP signals related to ore bodies and applications in mineral exploration.Three field examples focusing on seafloor sulfide deposits exploration are summarized to show the application effect of SP measurements in marine mineral exploration.This study would be helpful to investigating the use of SP surveys in ore prospecting,especially in marine environments.

关 键 词：自然电位 海洋矿产勘探 源机制 数值模拟 反演解释 

分 类 号：P631[天文地球—地质矿产勘探] P744[天文地球—地质学]