EGU21-9829
https://doi.org/10.5194/egusphere-egu21-9829
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Microseismicity in the Eastern Alps: Preliminary Results From the Swath-D Network

Rens Hofman1, Joern Kummerow1, Simone Cesca2, Joachim Wassermann3, Thomas Plenefisch4, and the AlpArray Working Group*
Rens Hofman et al.
  • 1Freie Universität Berlin, Geophysik, Berlin, Germany (rens@geophysik.fu-berlin.de)
  • 2Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum (GFZ)
  • 3Ludwig Maximilians Universität München
  • 4BGR Hannover
  • *A full list of authors appears at the end of the abstract

The AlpArray seismological experiment is an international and interdisciplinary project to advance our understanding of geophysical processes in the greater Alpine region. The heart of the project consists of a large seismological array that covers the mountain range and its surrounding areas. To understand how the Alps and their neighbouring mountain belts evolved through time, we can only study its current structure and processes. The Eastern Alps are of prime interest since they currently demonstrate the highest crustal deformation rates. A key question is how these surface processes are linked to deeper structures. The Swath-D network is an array of temporary seismological stations complementary to the AlpArray network located in the Eastern Alps. This creates a unique opportunity to investigate high resolution seismicity on a local scale.

In this study, a combination of waveform-based detection methods was used to find small earthquakes in the large data volume of the Swath-D network. Methods were developed to locate the seismic events using semi-automatic picks, and estimate event magnitudes. We present an overview of the methods and workflow, as well as a preliminary overview of the seismicity in the Eastern Alps.

AlpArray Working Group:

AlpArray Seismic Network (2015): AlpArray Seismic Network (AASN) temporary component. AlpArray Working Group. Other/Seismic Network. doi:10.12686/alparray/z3_2015 Datacite Link: http://data.datacite.org/10.12686/alparray/z3_2015

How to cite: Hofman, R., Kummerow, J., Cesca, S., Wassermann, J., and Plenefisch, T. and the AlpArray Working Group: Microseismicity in the Eastern Alps: Preliminary Results From the Swath-D Network, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-9829, https://doi.org/10.5194/egusphere-egu21-9829, 2021.

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