Performance of Wielandt-Streckeisen STS-1 seismometers in the tidal domain—preliminary results
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On the origin of the signals observed across the seismic spectrum
2016, Earth-Science ReviewsCitation Excerpt :Earth tides can be used to get information of the Earth interior, as estimations of the flattening of the core-mantle boundary, or to improve the accuracy of other measurements, as the positions given by GNSS networks (Agnew, 2007). Earth tides are typically recorded using tiltmeters, strainmeters, gravimeters or space geodesy instruments (Agnew, 1986), but the displacements induced by solid Earth tides produce tilting that can also be detected by broad-band seismic sensors, in some cases with accuracy similar to supercomputing gravimeters (Pillet et al., 1994; Freybourger et al., 1997). However, using broad-band seismometers to monitor Earth tide variations is only possible in locations with favorable conditions, as these signals are often masked by the effect of temperature and pressure changes, which can deform the vault or sensor casing, modifying the instrument response or altering the mechanical properties of the material surrounding the sensor, hence producing a signal not related to the elastic deformation of the Earth (Wolin et al., 2015).
Vertical and horizontal seismometric observations of tides
2006, Journal of GeodynamicsCitation Excerpt :Gravimeters and tiltmeters are extensively used to study tides. However broadband seismometers can also be sensitive at tidal frequencies as shown by Pillet et al. (1994). These authors used POS channel (which stands for the mass position output and which is proportional to the ground acceleration at long periods) to compare STS-1 seismometers and gravimeters in the diurnal and semidiurnal bands; tides are well recovered with seismometers, however they found tidal residuals about 10 times larger compared to gravimeters.
The NetLander very broad band seismometer
2000, Planetary and Space ScienceComparative study of superconducting gravimeters and broadband seismometers STS-1/Z in seismic and subseismic frequency bands
1997, Physics of the Earth and Planetary InteriorsFrom Chandler wobble to free oscillations: comparison of cryogenic gravimeters and other instruments in a wide period range
1995, Physics of the Earth and Planetary InteriorsUltra-Low-Frequency Tri-Component Fiber Optic Interferometric Accelerometer
2018, IEEE Sensors Journal