Alireza Malehmir, Silvia Salas Romero, Chunling Shan, Emil Lundberg, Christopher Juhlin, Mehrdad Bastani, Lena Persson, Charlotte Krawczyk, Ulrich Polom, Anna Adamczyk, Michal Malinowski, Marcus Gurk, Nazli Ismail
Landslides are one of the most commonly occurring natural disasters. They claim hundreds of human lives and cost billions of dollars every year. In order to provide geophysical tools and techniques to better characterize sites prone to slide, we have been carrying out and evaluating potential utility of several geophysical surveys over a quick clay landslide site in southwest Sweden since 2011. The measurements include 2D and 3D P- and S-wave high resolution surface seismics, radio- and controlled-source electromagnetics, geoelectrics, ground gravity and magnetic surveys. A particular focus here is given to the seismic studies in the site. Combined with downhole geophysical and geotechnical measurements, we show that majority of reflections correlate well with sandy-silty formations in the site. Quick clays often occur above these formations, which may be an indication of the role of coarse-grained formations to not only partly form quick clays but also triggering them when pore-water pressure is significantly increased. © 2013 SEG.
Uppsala University, Sweden; Geological Survey of Sweden, Sweden; Leibniz Institute for Applied Geophysics, Germany; Polish Academy of Sciences, Poland; University of Cologne, Germany; Syiah Kuala University, Indonesia
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