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Titel Airborne geophysical mapping as an innovative methodology for landslide investigation: evaluation of results from the Gschliefgraben landslide, Austria
VerfasserIn Robert Supper, Ivo Baroň, David Ottowitz, Klaus Motschka, Stefanie Gruber, Edmund Winkler, Birgit Jochum, Alexander Römer
Medientyp Artikel
Sprache Englisch
ISSN 1561-8633
Digitales Dokument URL
Erschienen In: Natural Hazards and Earth System Science ; 13, no. 12 ; Nr. 13, no. 12 (2013-12-17), S.3313-3328
Datensatznummer 250085587
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/nhess-13-3313-2013.pdf
 
Schlagwörter Naturgefahren, Massenbewegung, Erdrutsch, Schuttstrom, Naturkatastrophe, Geophysik, Geophysik (angewandte), Aerogeophysik, Luftgestützte Überwachung, Monitoring, Fernerkundung, Geologischer Dienst, Geologische Bundesanstalt
Geograf. Schlagwort Österreich, Oberösterreich, Gmunden (Bezirk), Gschliefgraben, Voralpen (O.Ö., westl.)
Blattnummer 66 [Gmunden]
Blattnummer (UTM) 3206 [Gmunden]
 
Zusammenfassung
In September 2009, a complex airborne geophysical survey was performed in the large landslide affected area of the Gschliefgraben valley, Upper Austria, in order to evaluate the applicability of this method for landslide detection and mapping. An evaluation of the results, including different remote-sensing and ground-based methods, proved that airborne geophysics, especially the airborne electromagnetic method, has a high potential for landslide investigation. This is due to its sensitivity to fluid and clay content and porosity, which are parameters showing characteristic values in landslide prone structures. Resistivity distributions in different depth levels as well as depth slices along selected profiles are presented and compared with ground geoelectrical profiles for the test area of Gschliefgraben.

Further interesting results can be derived from the radiometric survey, whereas the naturally occurring radioisotopes 40K and 232Th, as well as the man-made nuclide 137Cs have been considered. While the content of potassium and thorium in the shallow subsurface layer is expressively related to the lithological composition, the distribution of caesium is mainly determined by mass wasting processes.
 
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