Some aspects of seismic rotational waves SRW recognition by fiber-optic rotational seismometer FORS-II

In this paper we have described new results obtained during investigation of seismic rotational waves simultaneously by TAPS - two antiparallel pendulum seismometers system as well as by FORS-II - fiber-optic rotational seismometer. The main advantage of such approach is a possibility to recognize the velocity of seismic rotational waves which seems to be different from velocities of other seismic waves. The experimental data presented in the paper are confirmed by theoretical description of seismic rotational waves' nature.