Evidence for static displacements from the June 9, 1994 Deep Bolivian Earthquake

The 1994 Bolivian Earthquake (M_w=8.3) was recorded on‐scale by 8 very‐broadband stations deployed approximately 600 km south of the epicenter. When these seismograms are carefully converted to ground displacement, there appears to be a static offset which is on order of 2 cm. We have modeled the waveforms with a synthetic waveform method that contains near‐, intermediate‐ and far‐field terms. Although the synthetics are only calculated for an elastic half‐space, they compare favorably with the observed waveform in terms of shape. However, the theoretical amplitude is 1/2 of the observed static offset, which probably reflects the limitations of a homogeneous half‐space model and/or the instabilities in deconvolution.