A//r//m//s AND SEISMIC SOURCE STUDIES.
By: Thomas C. Hanks
Edited by: Gay N.C.Wainwright E.H.
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Abstract
This paper briefly summarizes some recent developments in studies of seismic source parameter estimation, emphasizing the essential similarities between mining-induced seismogenic-failure and naturally occurring, tectonically driven earthquakes. The root-mean-square acceleration, a//r//m//s, shows much promise as an observational measure of high-frequency ground motion; it is very stable observationally, is insensitive to radiation pattern, and can be related linearly to the dynamic stress differences arising in the faulting process. To interpret a//r//m//s correctly, however, requires knowledge of f//m//a//x, the high-frequency band-limitation of the radiated field of earthquakes. As a practical matter, f//m//a//x can be due to any number of causes, but an essential ambiguity is whether or not f//m//a//x can arise from source properties alone. The interaction of the aftershocks of the Oroville, California, earthquake illustrates how a//r//m//s stress drops may be connected to detailed seismicity patterns.
Suggested Citation
Hanks, T.C., 1984, A//r//m//s AND SEISMIC SOURCE STUDIES., Rockbursts and Seismicity in Mines., Johannesburg, S Afr, p. 39-44.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | A//r//m//s AND SEISMIC SOURCE STUDIES. |
| ISBN | 062006708X |
| Year Published | 1984 |
| Language | English |
| Publisher | South African Inst of Mining and Metallurgy |
| Publisher location | Johannesburg, S Afr |
| First page | 39 |
| Last page | 44 |
| Conference Title | Rockbursts and Seismicity in Mines. |
| Conference Location | Johannesburg, S Afr |