High-frequency observations and source parameters of microearthquakes recorded at hard-rock sites
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Abstract
We have estimated the source parameters of 53 microearthquakes recorded in July 1983 which were aftershocks of the Miramichi, New Brunswick, earthquake that occurred on 9 January 1982. These events were recorded by local three-component digital seismographs at 400 sps/component from 2-Hz velocity transducers sited directly on glacially scoured crystalline basement outcrop. Hypocentral distances are typically less than 5 km, and the hypocenters and the seven digital seismograph stations established all lie essentially within the boundaries of a granitic pluton that encompasses the faults that ruptured during the main shock and major aftershocks. The P-wave velocity is typically 5 km/sec at the surface and at least 6 km/sec at depths greater than about 1 km.
Study Area
Publication type | Article |
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Publication Subtype | Journal Article |
Title | High-frequency observations and source parameters of microearthquakes recorded at hard-rock sites |
Series title | Bulletin of the Seismological Society of America |
DOI | 10.1785/BSSA0750061535 |
Volume | 75 |
Issue | 6 |
Year Published | 1985 |
Language | English |
Publisher | Seismological Society of America |
Contributing office(s) | Earthquake Science Center |
Description | 33 p. |
First page | 1535 |
Last page | 1567 |
Country | Canada |
Other Geospatial | Miramichi |
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