Calculation of Ground Rotational Motions Using Seismic Array Data
This article gives a description of our first study on ground rotational motion and its pre-liminary results. The ground rotational motions around vertical axis were obtained using near-field translational records of a temporal seismic array with observational distances of 1.8 to 2.7 km. The sources...
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| Published in: | Journal of earth science (Wuhan, China) Vol. 23; no. 2; pp. 173 - 179 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
China University of Geosciences
China University of Geosciences
01-04-2012
Springer Nature B.V |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | This article gives a description of our first study on ground rotational motion and its pre-liminary results. The ground rotational motions around vertical axis were obtained using near-field translational records of a temporal seismic array with observational distances of 1.8 to 2.7 km. The sources used are explosions with explosive of 500 kg for each. Ground rotational velocities were calcu-lated using the space derivatives of the horizontal components of translational velocities from the array. The peak ground rotational velocities （PGRV） are approximately 30 to 57 ？rad/s. Our results are very close to those from Wassermann et al. （2009）, who used both a seismic array and a rotational sensor to record an explosion in Germany and obtained PGRV values of about 50 ？rad/s. Their explosives are 150 kg, only one third of ours, but their observational distance is 250 m, much less than ours. |
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| Bibliography: | ground rotational motion, seismic array, explosive source. 42-1788/P This article gives a description of our first study on ground rotational motion and its pre-liminary results. The ground rotational motions around vertical axis were obtained using near-field translational records of a temporal seismic array with observational distances of 1.8 to 2.7 km. The sources used are explosions with explosive of 500 kg for each. Ground rotational velocities were calcu-lated using the space derivatives of the horizontal components of translational velocities from the array. The peak ground rotational velocities （PGRV） are approximately 30 to 57 ？rad/s. Our results are very close to those from Wassermann et al. （2009）, who used both a seismic array and a rotational sensor to record an explosion in Germany and obtained PGRV values of about 50 ？rad/s. Their explosives are 150 kg, only one third of ours, but their observational distance is 250 m, much less than ours. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1674-487X 1867-111X |
| DOI: | 10.1007/s12583-012-0242-9 |