Seismic Rockfall Monitoring in the Hohe Tauern Region
Continuous, passive seismic monitoring is a proven geophysical method to identify and quantify sporadic processes and events. In course of the project SeisRockHT, seismic monitoring is used to detect and analyze high-alpine rockfall in permafrost-affected rock walls. To this end, seismic monitoring networks, designed for continuous, all year operation, are installed at the Sonnblick and at the Open Air Lab Kitzsteinhorn.
However, the two research sites represent disparate observation scopes: At the smaller Kitzsteinhorn test site, processes and events are analyzed at slope scale (elevation difference 100 m) with high spatial resolution, whereas at the larger Sonnblick site, an entire, large-scale rock face (elevation difference 800 m) is monitored at mountain scale, based on a lower measurement density and hence, a lower spatial resolution.
At both sites, Sonnblick and Kitzsteinhorn, the seismic monitoring is integrated into already existing long-term monitoring programs. In addition to the detection and quantification of rockfall events, SeisRockHT furthermore seeks a better general understanding of the potential causes of rockfall events. Thus, measured local seismicity is correlated with abundant complementary data acquired at both monitoring sites, in order to gain new insights on the relative importance of specific geologic and climatic influencing factors.
Contribution GEORESEARCH: Lead Work Package 3: Surface Monitoring (Terrestrial Laserscanning, UAS-based Photogrammetry)
Project Partners: Central Institute for Meteorology and Geodynamics (ZAMG), Mertl Research GmbH, Geosono
Projekt Duration: 2014 - 2017
Funding: Austrian Academy of Sciences (ESS 2013)
Project Homepage: Project Homepage Mertl Research, Project Homepage ZAMG
Thawing permafrost brings increased number of rockfall events
Article at derstandard.at on the establishment of seismic monitoring networks at the Kitzsteinhorn and the Sonnblick.
Central Institute for Meteorology and Geodynamics
geosono - Anton Lettenbichler e.U.
Binder D., Hartmeyer I., Keuschnig M., Mertl S., Lenhardt W. (2017): SeisRockHT – Seismic Rockfall Monitoring in the Hohe Tauern region. Poster presentation at the EGU General Assembly 2017, Geophysical Research Abstracts Vol. 19, EGU2017-17451.
Binder D., Hartmeyer I., Keuschnig M., Mertl S., Lenhardt W. (2016): SeisRockHT - Seismic Rockfall Monitoring in the Hohe Tauern region. Poster presentation at the EGU General Assembly 2016, 17.-22. April 2016, Wien.
Auftauender alpiner Permafrost führt zu mehr gefährlichen Felsstürzen. Der Standard (16.08.2015).