ACCELEROMETER RECORDINGS OF THE 1992 ROERMOND EARTHQUAKE, THE NETHERLANDS, AND GROUND MOTION SIMULATIONS USING THE EMPIRICAL GREENS-FUNCTION METHOD

A telemetered digital three-station network at Soultz-sous-Forets in N E France (280 km SE of Roermond) recorded the M(L) = 5.8 mainshock of the Roermond earthquake on April 13, 1992 and also the M(L) = 3.6 afte rshock at 01:06 UTC, April 14, 1992. Using the empirical Green's funct ion method the ground motions recorded during the mainshock are meddle d from the recording of the aftershock. This method is used to calcula te a maximum ground acceleration of 0.17 m/s(2) (peak-to-peak) at a si te in the Rhine Graben where the observed maximum ground acceleration was 0.18 m/s(2). The recordings from the three stations show a variati on in the amplitude of peak-to-peak ground acceleration for the three sites, from 0.027 m/s(2) at a rock site on the edge of the Upper Rhine Graben to 0.18 m/s(2) at a station on sediments in this graben.