6th IWGoRS Meeting in Paris, France, 21-23 November 2022

We will be there! We will show our new FOS6 solutions and the system of ultra-precise synchronisation of seismological measurements.

https://www.gov.pl/web/ncbr-enIn January 2022, we started a new project, FOS6, the 3-dimensional precise FOG-based seismometers. We got €1.5 mln funding from the National Centre for Research and Development. Our team is now part of Elproma Elektronika. We implemented this project together with the Lodz University of Technology.

FFB November Experiment (from 2019-11-18 to 2019-11-22)

Geophysical Observatory Fürstenfeldbruck
Ludwigshöhe 8, D-82256 Fürstenfeldbruck

FOSREM team is doing a part of the active seismic experiment. All groups installed above 40 sensors and sensors matrix. FOSREM installed four fibre optics sensors – two FOS3 and two FOS5.
See our devices installed in the field.

Power&Communication Units (inside the tent) and two FOS3 sensors (in the hole)

FOS5 and FOS3 inside the bunker.


IWGoRS 5th, Sun Moon Lake, Taiwan – we will be here!

IWGoRS 5th International Working Group on Rotational Seismology Sun Moon Lake, Taiwan 2019/09/22 – 26

The 5th IWGoRS workshop will be held at the Teacher’s Hostel, Sun Moon Lake, Taiwan, from September 22-26, 2019. Institute of Earth Sciences, Academia Sinica (IES) will be the local host. The workshop will cover on all aspects of rotational seismology including (but not limited to):

  • instrumentation (portable sensors, ring lasers, tilt correction, etc)
  • observation of rotations (application domains, best practices)
  • array seismology (gradients, strains, rotations)
  • data processing, wavefield interpolation, phase separation
  • earthquake physics
  • volcano seismology
  • ocean-bottom observations
  • earthquake engineering
  • seismic inverse problems

With the advance of portable rotation sensor, we expect more rotation observations will be shown in the workshop.

New FOSREM FOS-5 sensor

The FOS-5 sensor contains a complete fibre-optic Sagnac interferometer with 250 mm diameter fiber-optics loop, analog to  digital conversion circuits, FPGA based digital processing unit for close-loop operation, power conversion and management parts. All of these are placed in a robust case, meeting the IP67 requirements.
This internal digital processing unit provides rotation speed (Omega) value directly in digital form. The FOS-5 has an RS-485 interface for data and USB interface for diagnostic. The connection provides data transmission and power supply from PCU over only one, standard M12 cable within the distance of 500 meters.

4th IWGoRS Meeting in Tutzing, Germany, 20-23 June, 2016

The 4th IWGoRS workshop were held at the Evangelische Akademie Tutzing (near Munich, Germany), June 20-23, 2016. The workshop was focus on any aspect of rotational ground motion including the recording of rotations, instrumentation, earthquake sources, non-standard rheologies, inverse problems, geodesy, earthquake engineering, long-period seismology, array-derived rotation, noise-correlation studies, ring laser technology, Earth’s rotation, problems of fundamental physics and others.

Our team  has prepared one oral presentation and two-day demonstration of mobile Fosrem System in action.  The presentation given by Prof. Leszek R. Jaroszewicz is avaiable here. Also Fosrem System data sheet is avaiable for download.