Gresten - Am Salcher Landslide Observatory - Austria

The ENGAGE working group (Geomorphological Systems and Risk Research at the Institute for Geography and Regional Research) has been running a long-term monitoring project to investigate landslides in Lower Austria. Landslides (translational and rotational failures, debris flows, rock avalanches, rock falls, etc.) number among the most abundant natural hazards in Lower Austria. Resulting from sporadic phases of activity it is essential to generate specific long-term measurement series, enabling the analysis of changes in surface movements as well as underground in connection with triggering factors. Therefore, in 2014 the project “NoeSLIDE – Monitoring diverse types of landslides in Lower Austria” was initiated. The research sites are compiled under the parent site "LTER NoeSLIDE" which has three subsites, of which one is the Salcher Landslide Observatory. The Salcher landslide is located in the municipality of Gresten, Scheibbs district, Province of Lower Austria. It is located on an unwooded hillside area that slopes from west to east (at around 435 to 470 m above sea level / slope between 5 ° and max. 20 °) and is enclosed on three sides by anthropogenic features (streets / houses). The processes at the Salcher landslide are to be classified as rotational landslide, with more than one sliding surface being assumed. The currently active area is ~ 4,000 m², the area to be potentially activated is ~ 20,000 m². In addition to traditional methods such as the installation of a weather station, piezometers, inclinometers, TDR (time-domain reflectometry) probes, GNSS (global navigation satellite system), Tachymeters, methods such as continuous terrestrial laser scanning, UAV applications and permanent geoelectric are used.