Geophysical anatomy of the Hollin Hill landslide, North Yorkshire, UK.

Geophysical methods are playing an increasingly important role in the investigation and monitoring of landslides (e.g. Jongmans and Garambois, 2007); such methods are proving to be particularly effective for revealing the 3D structure, failure 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 and self-potential (SP) methods 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.