Monitoring Equipment
High-precision monitoring systems and seismic instrumentation
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ROMY ringlaser
- Location
- Geophysical Observatory Fürstenfeldbruck
- Responsible persons
- Heiner Igel
- Access
- For data access contact Heiner Igel
The lower corner of the ROMY ringlaser array at 15 m depth with corner boxes reflecting the laser light. | © Jonas Igel
ROMY is a four-component ringlaser array of tetrahedral shape funded by the European Research Council and LMU Munich. Four triangles with 12 side length measure rotational motions using the Sagnag effect. Counterpropagating laser beams interfere to generate a beating frequency (Sagnac) that is proportional to the rotation rate around the surface normals of the triangles. Ringlasers are originally built for geodesy to observe Earth's rotation but also deliver highly accurate rotational ground motions for seismology. For more information see https://www.romy-erc.eu . Data example can be accessed at https://rotations-database.geophysik.uni-muenchen.de .
ROMY is currently a worldwide unique facility. While being an experimental facility that is progressively modified it serves as a playground for future ringlaser technology applied to both geodesy and geophysics as well as highly precise wavefield observations in the context of gravitational wave detection.
Seismic Instruments
- Seismic Instruments (Erdbebendienst)
- Contact person
- Joachim Wassermann
- Location
- Geophysikalisches Obervatorium
The Erdbebendienst provides seismic monitoring of the state of Bavaria and adjoint regions and scientific investigation of their causes (natural, triggered, induced).
40 seismic stations with nearly uniform instrumentation (Nanometrics Centaur 3&4; Nanometrics Trillium Compact 120 & Streckeisen STS-2; 2 Lippmann Tiltmeter in connection with a 30m vertical pendulum and a horizontal fibre optic gyroscope (Streckeisen FARO). Nearly all data are streamed in real time to the Geophysical Observatory Fürstenfeldbruck and are freely available on the EIDA nodehttp://erde.geophysik.uni-muenchen.de/fdsnws
- Seismic Fast Response Instruments
- Location
- Geophysical Observatory Fürstenfeldbruck
- Contact person
- Joachim Wassermann
- Access
- upon request
- Specification
- seismic station for aftershock measurement, microzonation and other short term seismological experiments
The seismological pool consists of 8 DiGOS dataCubes (incl. breakout boxes for Nanometrics Trillium instruments); 10 Centaur4 digitisers; 7 Nanometrics Trillium Compact Horizon; 11 Nanometrics Trillium Compact 120; 14 ArduSimple GNSS receiver (2 & 3 frequencies) including antennas; 1 MB2005 infrasound sensor;
- Geophysical Instruments
- Location
- Geophysical Observatory Fürstenfeldbruck
- Contact person
- Joachim Wassermann
- Access regulations
- upon request only possible if teaching schedule permits
- Specifications
- Geophysical exploration equipment for shallow subsurface investigation
2 Seismic refraction/reflexion instruments (GEODE 12 channel; DMT Summit 24 channel); GeoTom 100 electrodes geoelectric apparatus (400m cable); IDS ground penetrating radar (200 & 600 MHz antennas); IRIS VLF-R with 10 m cables; 1 Stones DGPS
- BlueSeis-3A Rotational Seismometer
- Location
- The four rotational seismometers are part of the mobile seismic instrument pool which is based at the Geophysical Observatory in FFB
- Contact person
- Felix Bernauer
- GIOTTO IMU50 6-component sensor network
- Location
- The GIOTTO IMU50 sensor network is part of the mobile seismic instrument pool which is based at the Geophysical Observatory in FFB
- Contact person
- Felix Bernauer
