Long-term changes of the time-latitude and seismicity in San Juan, Argentina.
Abstract
The relation between the residuals of astronomical time and latitude and seismicity in the vicinity of San Juan of Argentina is researched. The results show that there are close relations between major earthquakes (M ≥ 5.0) and the time-latitude residuals of Danjon astrolabe installed in San Juan Observatory. The earthquakes often occur at the peak segment of the latitude residual curve. This phenomenon may be explained by the displacement of the crust around the observatory before the occurrence of a major earthquake.
- Publication:
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Astrophys. Rep
- Pub Date:
- January 1997
- Bibcode:
- 1997ARpS....1...81J
- Keywords:
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- Earth Rotation: Seismicity