caa a22 4500 477048056 CHVBK 20180405111335.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF00877486 doi (NATIONALLICENCE)springer-10.1007/BF00877486 Effects of rupture complexity and stress regime on scaling relations of induced microseismic events [Elektronische Daten] [Theodore Urbancic, Cezar-Ioan Trifu] Source parameter scaling relations are examined for microseismic events (−2.4≤M≤−0.3) occurring within higyly and moderately stressed and fractured rock masses at Strathcona mine, Sudbury, Canada. Insight into scaling is provided by waveform complexities, calculated rupture velocities, and maximum shear stresses based onin situ and numerical modelling data. The importance of normal stress on the failure process is also considered. Our results show that a strong dependence exists between stress release and seismic moment. An observed positive scaling in excess stress release (Δσ/2−σ a ) is consistent with the concept of overshoot. Rupture velocities ranging from 0.2 to 0.5β and waveform complexities less than 1.5 suggested that overshoot was related to healing behind a slowly advancing rupture front. Scaling in seismic efficiency paralleled that in apparent stress, implying that seismic stress release estimates are quasi-independent of the maximum shear stress. High levels of normal stress further supported the importance of high resisting stress in the observed overshoot behaviour and its role in the failure process. Birkhäuser Verlag, 1996 Microseismicity nationallicence source parameter scaling nationallicence seismic efficiency nationallicence principal stresses nationallicence Urbancic Theodore Engineering Seismology Group Canada Inc., K7L 2Z4, Kingston, Canada aut Trifu Cezar-Ioan Engineering Seismology Group Canada Inc., K7L 2Z4, Kingston, Canada aut pure and applied geophysics Birkhäuser-Verlag 147/2(1996-07-01), 319-343 0033-4553 147:2<319 1996 147 24 https://doi.org/10.1007/BF00877486 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00877486 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Urbancic Theodore Engineering Seismology Group Canada Inc., K7L 2Z4, Kingston, Canada aut NATIONALLICENCE 700 1- Trifu Cezar-Ioan Engineering Seismology Group Canada Inc., K7L 2Z4, Kingston, Canada aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 147/2(1996-07-01), 319-343 0033-4553 147:2<319 1996 147 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer