EGU23-17618, updated on 10 Jan 2024
https://doi.org/10.5194/egusphere-egu23-17618
EGU General Assembly 2023
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Global Distributed Fibre Optic Sensing recordings of the February 2023 Turkey earthquake sequence.

Philippe Jousset1, Andreas Wuestefeld2, Charlotte Krawczyk1, Alan Baird2, Gilda Currenti3, Martin Landrø4, Andy Nowacki5, Zack Spica6, Sandra Ruiz Barajas7, Fabian Lindner8, Özgün A. Konca9, Pascal Edme10, Voon Hui Lai11, Vladimir Treshchikov12, Lena Urmantseva13, Jan Peter Morten14, Werner Lienhart15, Bradley Paul Lipovsky16, Martin Schoenball17, Kuo-Fong Ma18, and the “DAS-month” team (sample only!)*
Philippe Jousset et al.
  • 1GFZ Potsdam, Geophysics, Potsdam, Germany (philippe.jousset@gfz-potsdam.de)
  • 2NORSAR, Norway
  • 3INGV, Italy
  • 4NTNU, Norway
  • 5The University of Leeds, UK
  • 6University of Michigan, USA
  • 7National Geographic Institute of Spain, Spain
  • 8LMU Munich, Germany
  • 9Bogazici University, Turkey
  • 10ETHZ, Switzerland
  • 11Australian National University, Australia
  • 12T8 Sensor LLC, Russia
  • 13AP Sensing, Germany
  • 14Alcatel Submarine Network, Norway
  • 15Graz University of Technology, Austria
  • 16Department of Earth and Space Sciences, University of Washington, United States
  • 17NAGRA, Switzerland
  • 18Institute of Earth Sciences, Academia Sinica, Taiwan 128 Academia Road Section II, Taipei, 11529, Taiwan
  • *A full list of authors appears at the end of the abstract

As part of a global distributed acoustic sensing (DAS) campaign, multiple DAS interrogators (from academia and industry) recorded simultaneously from 1st till 28th February 2023 in different regions of the globe. The objective is to define if and how a global monitoring system based on DAS could perform for teleseismic event record and analysis. Each participant uploaded triggered data window from earthquakes with magnitude larger than 5, as defined by global seismological networks, to a central storage location. Data was pre-processed following common filtering parameters (spatial and temporal sampling). Bottle-necks in data format, storage, and legal issues are identified and reviewed to pose the basis for a common DAS data archive strategy.

In this study, we present a selection of DAS records of the Turkey earthquake sequence, from borehole, surface, on-land, submarine telecommunication or dedicated cables all over the globe. They comprise a few kilometers long railroad track (Switzerland), an 0.8 km long deployed cable in the Limmat river, near Zürich (Switzerland), a 1 km deployed cable at Mt. Zugspitze in the Alps (Germany/Austria), a 21 km telecom cable in the forest around Potsdam (Germany), a 17 km telecom cable surface geothermal field (north Iceland), a 0.2 km borehole at Etna volcano (Italy), a telecom cable in the city of Istanbul (Turkey), a 25 km telecom cable in Melbourne (Australia), in the inner city line in Graz (Austria), in the city of Seattle, WA (USA), a submarine cable in the North Sea, a submarine cable connecting Ny Ålesund and Longyearbyen at Svalbard (Norway), a 0.8 km dedicated fibre in a quick clay area in Norway, amongst many others.

We show that signals from the two destructive earthquakes in Turkey were recorded all over the globe. We discuss the signal quality and their potential use to study teleseism signals. We analyze recorded strain amplitudes according to the different array geometries and the differing sensitivities to wave types (body, surface waves, possibly others) and deployment conditions. When available, comparison with other sensors located in the same place is performed. Finally, we analyze the influence of local geological conditions due to the passing large amplitudes waves.

With the increasing availability, reduced cost and improved simplicity of DAS systems and the wide spread existing fibre optic networks, we believe fibre-optic sensing will play an ever-increasing role in the global seismic monitoring.

“DAS-month” team (sample only!):

1. GFZ (Germany): Philippe Jousset, Charlotte Krawczyk, Christopher Wollin, Sergio Diaz, Leila Ehsaninezhad, Veronica Rodriguez Tribaldos, Johannes Hart 2. NORSAR (Norway): Andreas Wuestefeld, Alan Baird, Volker Oye 3. INGV (Italy): Gilda Currenti, Michele Prestifilippo, Rosalba Napoli 4. NTNU (Norway): Martin Landrø, Robin André Rørstadbotnen 5. The University of Leeds (UK): Andy Nowacki, Sjoerd de Ridder, Adam Booth 6. University of Michigan (USA): Zack Spica 7. National Geographic Institute of Spain (Spain): Sandra Ruiz Barajas, Beatriz Gaite 8. University of München (Germany): Fabian Lindner 9. Bogazici University (Turkey): Özgün A. Konca 10. ETHZ (Switzerland): Pascal Edme, Andreas Fichtner, Daniel Bowden, Antonio Pio Rinaldi, Ali Shaikhsulaiman 11. Australian National university (Australia): Voon Hui Lai, Meghan Miller 12. T8 Sensor LLC (Russia): Vladimir Treshchikov, Sergei Nikitin 13. AP Sensing (Germany): Lena Urmantseva, Daniel Zapf 14. Alcatel Submarine Network (Norway): Jan Petter Morten 15: Graz University of Technology (Austria): Werner Lienhart, Lisa Strasser, Vlad Dumitru 16: Department of Earth and Space Sciences, University of Washington (United States): Bradley Paul Lipovsky 17: NAGRA (Switzerland): Martin Schoenball, Christoph Wetter 18: Institute of Earth Sciences, Academia Sinica (Taiwan): Kuo-Fong Ma

How to cite: Jousset, P., Wuestefeld, A., Krawczyk, C., Baird, A., Currenti, G., Landrø, M., Nowacki, A., Spica, Z., Barajas, S. R., Lindner, F., Konca, Ö. A., Edme, P., Lai, V. H., Treshchikov, V., Urmantseva, L., Morten, J. P., Lienhart, W., Lipovsky, B. P., Schoenball, M., and Ma, K.-F. and the “DAS-month” team (sample only!): Global Distributed Fibre Optic Sensing recordings of the February 2023 Turkey earthquake sequence., EGU General Assembly 2023, Vienna, Austria, 23–28 Apr 2023, EGU23-17618, https://doi.org/10.5194/egusphere-egu23-17618, 2023.

Supplementary materials

Supplementary material file