ROTATIONAL SEISMOMETER ON THE CAPACITIVE PRINCIPLE

J. Strunc

A novel approach based on the direct measuring of rotations using sophisticated mechanical transmission of ground movement into change of capacitance between electrodes of capacitor will be presented. It enables to construct small and portable sensor for field measurement. The other current methods for studying seismic rotations depend on the indirect measurement by means of matrix of sensors requiring careful in-situ planning. Basic ideas, dynamic characteristics, realized sensor, data acquisition module, algorithms and their implementations are discussed on a prototype of sensor. Sensor fulfils all requirements for general seismic measurement and complies with seismological standards so that it can be operated within any existing seismic network.