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Rotation, Strain, and Translation Sensors Performance Tests with Active Seismic Sources

Bernauer, Felix, et al. (2021), Rotation, Strain, and Translation Sensors Performance Tests with Active Seismic Sources, Sensors, 21(1), doi:10.3390/s21010264.

Interest in measuring displacement gradients, such as rotation and strain, is growing in many areas of geophysical research. This results in an urgent demand for reliable and field-deployable instruments measuring these quantities. In order to further establish a high-quality standard for rotation and strain measurements in seismology, we organized a comparative sensor test experiment that took place in November 2019 at the Geophysical Observatory of the Ludwig-Maximilians University Munich in Fürstenfeldbruck, Germany. More than 24 different sensors, including three-component and single-component broadband rotational seismometers, six-component strong-motion sensors and Rotaphone systems, as well as the large ring laser gyroscopes ROMY and a Distributed Acoustic Sensing system, were involved in addition to 14 classical broadband seismometers and a 160 channel, 4.5 Hz geophone chain. The experiment consisted of two parts: during the first part, the sensors were co-located in a huddle test recording self-noise and signals from small, nearby explosions. In a second part, the sensors were distributed into the field in various array configurations recording seismic signals that were generated by small amounts of explosive and a Vibroseis truck. This paper presents details on the experimental setup and a first sensor performance comparison focusing on sensor self-noise, signal-to-noise ratios, and waveform similarities for the rotation rate sensors. Most of the sensors show a high level of coherency and waveform similarity within a narrow frequency range between 10 Hz and 20 Hz for recordings from a nearby explosion signal. Sensor as well as experiment design are critically accessed revealing the great need for reliable reference sensors.
Further information
  author = {Felix Bernauer and Kathrin Behnen and Joachim Wassermann and Sven Egdorf and Heiner Igel and Stefanie Donner and Klaus Stammler and Mathias Hoffmann and Pascal Edme and David Sollberger and C{\'e}dric Schmelzbach and Johan Robertsson and Patrick Paitz and Jonas Igel and Krystyna Smolinski and Andreas Fichtner and Yara Rossi and Gizem Izgi and Daniel Vollmer and Eva P. S. Eibl and Stefan Buske and Christian Veress and Frederic Guattari and Theo Laudat and Laurent Mattio and Olivie S{\`e}be and Serge Olivier and Charlie Lallemand and Basil Brunner and Anna T. Kurzych and Michał Dudek and Leszek R. Jaroszewicz and Jerzy K. Kowalski and Piotr A. Bońkowski and Piotr Bobra and Zbigniew Zembaty and Ji{\v{r}}{{\'\i}} Vack{\'a}{\v{r}} and Ji{\v{r}}{{\'\i}} M{\'a}lek and Johana Brokesova},
  journal = {Sensors},
  number = {1},
  title = {{Rotation, Strain, and Translation Sensors Performance Tests with Active Seismic Sources}},
  volume = {21},
  year = {2021},
  url = {https://www.mdpi.com/1424-8220/21/1/264},
  doi = {10.3390/s21010264},
%0 Journal Article
%A Bernauer, Felix
%A Behnen, Kathrin
%A Wassermann, Joachim
%A Egdorf, Sven
%A Igel, Heiner
%A Donner, Stefanie
%A Stammler, Klaus
%A Hoffmann, Mathias
%A Edme, Pascal
%A Sollberger, David
%A Schmelzbach, Cédric
%A Robertsson, Johan
%A Paitz, Patrick
%A Igel, Jonas
%A Smolinski, Krystyna
%A Fichtner, Andreas
%A Rossi, Yara
%A Izgi, Gizem
%A Vollmer, Daniel
%A Eibl, Eva P. S.
%A Buske, Stefan
%A Veress, Christian
%A Guattari, Frederic
%A Laudat, Theo
%A Mattio, Laurent
%A Sèbe, Olivie
%A Olivier, Serge
%A Lallemand, Charlie
%A Brunner, Basil
%A Kurzych, Anna T.
%A Dudek, Michał
%A Jaroszewicz, Leszek R.
%A Kowalski, Jerzy K.
%A Bońkowski, Piotr A.
%A Bobra, Piotr
%A Zembaty, Zbigniew
%A Vackář, Jiří
%A Málek, Jiří
%A Brokesova, Johana
%D 2021
%N 1
%V 21
%J Sensors
%T Rotation, Strain, and Translation Sensors Performance Tests with Active Seismic Sources
%U https://www.mdpi.com/1424-8220/21/1/264
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Printed 08. Dec 2021 22:32