Affiliation:
1. Earthquake Research Institute, University of Tokyo, Tokyo 113-0032, Japan.
Abstract
The pattern of ground motion for a magnitude 5.7 earthquake near Tokyo was captured by 384 strong ground motion instruments across the Kanto sedimentary basin and its surroundings. The records allow the visualization of the propagation of long-period ground motion in the basin and show the refraction of surface waves at the basin edge. The refracted wave does not travel directly from the earthquake epicenter, but traverses the basin obliquely to the edge. The surface wave inside the basin propagates more slowly than that outside such that the wavefronts separate from each other, and the refracted wave heals the discrepancy in the speed of advance of the wavefronts inside and outside the basin. The refracted arrival is dominant near the edge of the Kanto basin.
Publisher
American Association for the Advancement of Science (AAAS)
Reference15 articles.
1. Response of High-Rise and Base-Isolated Buildings to a Hypothetical
M
w
7.0 Blind Thrust Earthquake
2. Kinoshita S., Seismol. Res. Lett. 69, 309 (1998).
3. Japan Meteorological Agency On Seismic Intensity (Gyosei Tokyo 1996).
4. S. Zama Proceedings of the 10th World Conference on Engineering 19 to 24 July 1992 Madrid Spain (A. A. Balkema Rotterdam Netherlands 1992). Surface waves induced from S body waves at a basin edge are known as another kind of seismic phenomenon related to a sedimentary basin [
5. Field E. D., Bull. Seismol. Soc. Am. 86, 991 (1996);
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