物探化探计算技术2018，Vol.40Issue(2)：197-204,8.DOI:10.3969/j.issn.1001-1749.2018.02.09
LOTEM视电阻率曲线对一维层状介质的分辨能力
Distinguishing ability for 1D models of LOTEM apparent resistivity curves
摘要
Abstract
Based on the one-dimensional forward modeling of the long-offset transient electromagnetic method,the mod-el response is calculated in this paper.The parameter variations of the layer and the offset,law of the resistivity curve and the resolution coefficient are compared and analyzed.The results show that the distinguishing ability of the low resistance target layer is mainly determined by the longitudinal conductance.The larger the longitudinal conductivity and the higher the ratio the longitudinal conductivity of the low resistance target layer to the cover layer will be easier to distinguish the low resistance lay-er.When V2>1,distinguishing ability to the high resistance layer increases with increasing thickness,and the resistivity va-ries within a certain range to almost no effect on it.WhenV21,the apparent resistivity curve exists T equivalence principle. The distinguishing ability of method is better than the high resistance layer for the low resistance layer.The change of the off-set distance has little effect on the distinguishing ability.关键词
LOTEM视电阻率曲线/层参数影响/偏移距影响/分辨能力Key words
LOTEM apparent resistivity/influence of layer/influence of Offset distance/distinguishing ability分类
天文与地球科学引用本文复制引用
王阳,李伟林,李论,涂君,甘露..LOTEM视电阻率曲线对一维层状介质的分辨能力[J].物探化探计算技术,2018,40(2):197-204,8.基金项目
国土资源专项(201311037) （201311037）
国家重大科学仪器专项(2011YQ05006007) （2011YQ05006007）
中国地质调查局项目(DD20160017) （DD20160017）
