Multi-Method Geophysical Survey for the Study of a Holocene Landslide System

B007 Multi-method geophysical survey for the study of a Holocene landslide system Introduction 1 Landslides are complex structures and their study requires the use of complementary techniques such as GPR electrical resistivity or seismic refraction. Ancient landslide systems are particularly difficult to characterize as they normally display post-landslide sedimentation and compaction of debris. In general pre-landslide stratification is not preserved and the slump deposits will appear as areas showing chaotic features diffractions (in a GPR profile) as areas bounded by irregular interfaces (in a seismic refraction model). Refraction seismic-electrical resistivity measurements represent the most common combination of geophysical methods for