A complex geo-scientific strategy for landslide hazard mitigation – from airborne mapping to ground monitoring

Supper, R.; Römer, A.; Jochum, Birgit; Bieber, G.; Jaritz, Wolfgang

doi:10.5194/adgeo-14-195-2008

Cited by 39 publications

(23 citation statements)

References 7 publications

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“…Consequently, based on the results from this study and from Baroň et al (2013) and Supper et al (2008), we conclude that in general, airborne multi-parametric geophysics is a promising method, suitable -for spatially delineating areas with a high susceptibility for future instabilities;…”

Section: Discussionmentioning

confidence: 99%

“…Thorium and uranium show a high adsorption power to clay minerals, oxides and hydroxides. Therefore, high contents of thorium can be found, for example, in bauxite and bentonite (Siehl, 1996). In sedimentary rocks, quartz rich sandstones and limestones contain low concentrations of uranium, whereas due to the adsorption of uranium in clay minerals, clayey sediments exhibit rather high values (Siehl, 1996).…”

Section: Airborne Gamma Ray Spectroscopymentioning

confidence: 99%

“…1) comprises one of the most prominent and extensively studied slope failures of recent time in Central Europe (Supper et al, 2010). Gschliefgraben is a 2.85 km long and 0.85 km wide valley along the front of the Northern Calcareous Alps (Fig.…”

Section: The Study Areamentioning

confidence: 99%

“…Nakazato, 2004. Nakazato andKonishi, 2005;Nakazato et al, 2006;Supper et al, 2008;Pfaffhuber et al, 2010;Tofani et al, 2013). However, due to the rough topography usually encountered in landslide susceptible areas, performing a high quality, multi-parameter airborne survey within the limits of usual research budgets still poses a big challenge to geophysicists.…”

Section: Introductionmentioning

confidence: 99%

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Airborne geophysical mapping as an innovative methodology for landslide investigation: evaluation of results from the Gschliefgraben landslide, Austria

Supper

Baroň

Ottowitz

et al. 2013

Nat. Hazards Earth Syst. Sci.

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Abstract. 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 40 K and 232 Th, as well as the man-made nuclide 137 Cs 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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Section: Discussionmentioning

confidence: 99%

Section: Airborne Gamma Ray Spectroscopymentioning

confidence: 99%

Section: The Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Airborne geophysical mapping as an innovative methodology for landslide investigation: evaluation of results from the Gschliefgraben landslide, Austria

Supper

Baroň

Ottowitz

et al. 2013

Nat. Hazards Earth Syst. Sci.

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“…Moreover, automated resistivity tomography systems with permanently installed electrode networks have now been implemented to monitor soil conditions surrounding a number of active landslides (Supper et al, 2008;Chambers et al, 2009;Lebourg et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Estimating soil suction from electrical resistivity

Piegari

Maio

2013

Nat. Hazards Earth Syst. Sci.

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Abstract. Soil suction and resistivity strongly depend on the degree of soil saturation and, therefore, both are used for estimating water content variations. The main difference between them is that soil suction is measured using tensiometers, which give point information, while resistivity is obtained by tomography surveys, which provide distributions of resistivity values in large volumes, although with less accuracy. In this paper, we have related soil suction to electrical resistivity with the aim of obtaining information about soil suction changes in large volumes, and not only for small areas around soil suction probes. We derived analytical relationships between soil matric suction and electrical resistivity by combining the empirical laws of van Genuchten and Archie. The obtained relationships were used to evaluate maps of soil suction values in different ashy layers originating in the explosive activity of the Mt Somma-Vesuvius volcano (southern Italy). Our findings provided a further example of the high potential of geophysical methods in contributing to more effective monitoring of soil stress conditions; this is of primary importance in areas where rainfallinduced landslides occur periodically.

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Evaluation of Ground-Based and Helicopter Ground-Penetrating Radar Data Acquired Across an Alpine Rock Glacier

Merz

Maurer

Buchli

et al. 2015

Permafrost and Periglac. Process.

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To forecast rock glacier movements, it is necessary to have dependable information on their internal structures and physical properties. A first attempt to expand our knowledge of a rock glacier in the Swiss Alps involved acquiring ground-based ground-penetrating radar (GPR) data along numerous profiles using different acquisition systems and antennae with different nominal frequencies. Images derived from these ground-based data were inconsistent and unreliable. For our second attempt, we recorded GPR data using a helicopter-mounted system. The helicopter GPR sections were surprisingly good, with consistent images along adjacent and intersecting profiles. Internal shear horizons, ice-rich and ice-poor regions and the bedrock interface were well delineated on the helicopter GPR images. Besides providing excellent-quality images, the helicopter GPR system allowed areas of the rock glacier to be surveyed that would have been difficult or impossible to access for a ground-based study. Because near-surface heterogeneity does not seem to have a major effect on helicopter GPR data acquired across a rugged rock glacier, we suggest that helicopter GPR surveying might be useful for investigating many terrains covered by heterogeneous loose material, including debris avalanches, scree slopes and rockfalls.

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A complex geo-scientific strategy for landslide hazard mitigation – from airborne mapping to ground monitoring

Cited by 39 publications

References 7 publications

Airborne geophysical mapping as an innovative methodology for landslide investigation: evaluation of results from the Gschliefgraben landslide, Austria

Airborne geophysical mapping as an innovative methodology for landslide investigation: evaluation of results from the Gschliefgraben landslide, Austria

Estimating soil suction from electrical resistivity

Evaluation of Ground-Based and Helicopter Ground-Penetrating Radar Data Acquired Across an Alpine Rock Glacier

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