Recent developments in the direct-current geoelectrical imaging method
Recent developments in the direct-current geoelectrical imaging method
复制标题
DOI：
10.1016/j.jappgeo.2013.02.017
复制
发表时间：
2013-08-01
影响因子：
2
通讯作者：
Wilkinson, P. B.
中科院分区：
文献类型：
--
作者：
Loke, M. H.;Chambers, J. E.;Wilkinson, P. B.
在过去的25年里，地电方法在仪器、现场勘测设计和数据反演技术方面都有了重大改进。多电极和多通道系统使得能够有效地进行大型2-D、3-D甚至4-D勘测，以解决传统1-D勘测不可能解决的复杂地质结构。由于计算机技术以及快速数据反演技术和软件的不断发展，已经能够在现有的普通微型计算机上进行解释。多维地电测量目前广泛应用于环境、工程、水文和采矿应用。三维测量在非常复杂的区域中发挥着越来越重要的作用，在这些区域中，由于离线结构，二维模型会受到伪影的影响。利用计算机化的动态拖曳电阻率采集系统，可以迅速地对陆地和水域的大面积区域进行测量。将现有的金属威尔斯井用作长电极，改善了对被地下基础设施掩盖的区域中的目标的探测。许多PC控制的监测系统也可用于测量和检测地下的时间变化。在自动生成优化的电极阵列配置的技术方面已经有了显著的进步，这些电极阵列配置具有比传统阵列更好的分辨率和调查深度。其他积极发展的领域包括将电值转化为粘土和水分含量等地质参数、新型传感器、根据延时图像估计流体或地面运动以及联合反演技术。在本文中，我们调查了地电成像的最新发展，并提供了一个简短的展望未来的科学可能会走向。(c)2013年自然环境研究理事会和爱思唯尔BV。All rights reserved.
There have been major improvements in instrumentation, field survey design and data inversion techniques for the geoelectrical method over the past 25 years. Multi-electrode and multi-channel systems have made it possible to conduct large 2-D, 3-D and even 4-D surveys efficiently to resolve complex geological structures that were not possible with traditional 1-D surveys. Continued developments in computer technology, as well as fast data inversion techniques and software, have made it possible to carry out the interpretation on commonly available microcomputers. Multi-dimensional geoelectrical surveys are now widely used in environmental, engineering, hydrological and mining applications. 3-D surveys play an increasingly important role in very complex areas where 2-D models suffer from artifacts due to off-line structures. Large areas on land and water can be surveyed rapidly with computerized dynamic towed resistivity acquisition systems. The use of existing metallic wells as long electrodes has improved the detection of targets in areas where they are masked by subsurface infrastructure. A number of PC controlled monitoring systems are also available to measure and detect temporal changes in the subsurface. There have been significant advancements in techniques to automatically generate optimized electrodes array configurations that have better resolution and depth of investigation than traditional arrays. Other areas of active development include the translation of electrical values into geological parameters such as clay and moisture content, new types of sensors, estimation of fluid or ground movement from time-lapse images and joint inversion techniques. In this paper, we investigate the recent developments in geoelectrical imaging and provide a brief look into the future of where the science may be heading. (c) 2013 Natural Environment Research Council and Elsevier BV. All rights reserved.