|
Detailed Reference Information |
Trifu, C., Urbancic, T.I. and Young, R.P. (1993). Non-similar frequency-magnitude distribution for M < 1 Seismicity. Geophysical Research Letters 20: doi: 10.1029/93GL00426. issn: 0094-8276. |
|
A series of 1503 induced seismic events ranging in magnitude from -2 to 1 as computed based on a locally calibrated seismic moment scale were located within a well-defined volume at depth. The seismicity analysis was carried out over 2 months and included events recorded before, during, and following the aftershock period of a mN 2.6 rockburst. A non-similar pattern was clearly apparent for both cumulative and non-cumulative frequency-magnitude distributions, showing a relative enhancement of seismicity between magnitudes -0.5 and 0. This supports the existence of non-similar scaling at these magnitudes. The time variation of the b-value, as computed for a limited self-similar magnitude domain (-1.1 to -0.4), did not appear to be related to the rockburst. Instead, it is suggested that the rockburst perturbed the local stress field and consequently the distribution of the very small events. No correlations were found between b and space clustering. |
|
|
|
BACKGROUND DATA FILES |
|
|
Abstract |
|
|
|
|
|
Keywords
Seismology, Seismicity, Seismology, Earthquake parameters |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
|