Vibrating Beam MEMS Accelerometers

This lecture covers the principles and historical development of gravimetry, oscillations of a pendulum, gravity anomalies on Earth, ground water storage monitoring, lunar gravity experiments, CO2/gas density contrast monitoring, gravimetry on Mars, seismic ground motion monitoring, limitations in seismic sensors, vibrating beam resonant accelerometers, historical context of vibrating beam gravimeters, frequency shift vs applied force, microlever suspensions, measurement of response in vertical direction, in-lab sensor calibration, oscillator circuit interface, non-linear effects and noise processing, mode-localized sensing, common mode rejection, mode-localized MEMS accelerometers for seismic measurements, prototype SMG GRAV10 specifications, and field tests for mobile gravimetry.