Premium
Geoelectrical monitoring: an innovative method to supplement landslide surveillance and early warning
Author(s) -
Supper Robert,
Ottowitz David,
Jochum Birgit,
Kim JungHo,
Römer Alexander,
Baron Ivo,
Pfeiler Stefan,
Lovisolo Mario,
Gruber Stefanie,
Vecchiotti Filippo
Publication year - 2014
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2013060
Subject(s) - landslide , warning system , geology , engineering geology , displacement (psychology) , environmental geology , remote sensing , inversion (geology) , economic geology , early warning system , regional geology , hydrogeology , seismology , telmatology , geotechnical engineering , tectonics , computer science , psychology , telecommunications , volcanism , psychotherapist
Permanent geoelectrical monitoring, using the GEOMON 4D instrumentation in combination with high resolution displacement monitoring by means of the D.M.S. system, was performed at two active landslide areas: Ampflwang/Hausruck in Austria, and Bagnaschino in Italy. These sites are part of the Austrian geoelectrical monitoring network, which currently comprises six permanently monitored landslides in Europe. Within the observation intervals, several displacement events, triggered by intense precipitation, were monitored and analysed. All of these events were preceded by a decrease of electric resistivity. The application of an innovative 4D inversion algorithm made it possible to investigate the potential processes which led to the triggering of these events. We conclude that resistivity monitoring can significantly help in the investigation of the causes of landslide reactivation. Since the results also contribute to the extrapolation of local displacement monitoring data to a larger scale, resistivity monitoring can definitely support decision‐finding in emergencies.