Seismic Source Mechanisms
Annual rept. no. 1, 1 Jul 1970-30 Jun 1971
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF EARTH ATMOSPHERIC AND PLANETARY SCIENCES
Pagination or Media Count:
The purpose of this project is to develop an instrument system capable of measuring and recording the seismic spectrum at short distances from a large underground explosion. A problem of geologic hazard of considerable interest exists concerning the interaction of explosion-generated shock waves with tectonic stress in the neighborhood of the explosion site. A wide-band measurement of the seismic spectrum at short distances and at various azimuths about the explosion will supply crucial information about the processes in the focal region. The instrument system developed during the period covered by this report is capable of measuring and recording the seismic motions at three locations, separated by up to ten miles. Signal processing, telemetering, and recording are performed by the system. A detailed description of the system and its operation is given.
- Seismic Detection and Detectors