Geophysical anatomy of the Hollin Hill landslide, North Yorkshire, UK
Geophysical anatomy of the Hollin Hill landslide, North Yorkshire, UK
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英国北约克郡霍林山滑坡的地球物理解剖
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Price
中科院分区：
文献类型：
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作者：
J. Chambers;A. Weller;D. Gunn;O. Kuras;P. Wilkinson;P. Meldrum;R. Ogilvy;G. Jenkins;A. Gibson;J. Ford;S. Price
地球物理方法在滑坡调查和监测中发挥着越来越重要的作用；事实证明，这种方法对于揭示三维结构、破坏面以及与岩石和地球滑动相关的水文地质状况特别有效。本文介绍了英国霍林山滑坡的地电调查结果。这项工作是在安装永久性地球物理和岩土监测系统之前进行的，旨在评估电阻率（电阻率测绘和2D/3D ERT）和自电位方法（剖面和测绘）对该地点的调查和监测的适用性。特别是，我们关注的是评估整个研究区域的电特性对比和SP响应的大小。调查显示，滑动材料与砂岩基岩之间的电阻率对比良好，这使我们能够使用电阻率测绘数据和ERT模型来定义滑坡的几何形状。在现场观测到与地下水通过滑坡运动一致的SP特征，并用于识别与滑动材料相关的渗透模式。
Geophysical methods are playing an increasingly important role in the investigation and monitoring of landslides; such methods are proving to be particularly effective for revealing the 3D structure, failures surfaces, and the hydrogeological regimes associated with rock and earth slides. In this paper we present the results of a geoelectrical reconnaissance survey of the Hollin Hill landslide, UK. This work was undertaken in advance of the installation of a permanent geophysical and geotechnical monitoring system, and was designed to assess the suitability of resistivity (resistivity mapping and 2D/3D ERT) and self-potential methods (profiling and mapping) for investigating and monitoring this site. In particular, we were concerned to assess the electrical property contrasts and the magnitude of SP response across the study area. The surveys revealed that there was a good resistivity contrast between the slipped material and sandstone bedrock, which allowed us to use resistivity mapping data and ERT models to define the geometry of the landslide. An SP signature consistent with the movement of groundwater through the landslide was observed at the site, and was used to identify seepage patterns associated with the slipped material.