... mechanism ( θ =59°±1°) with a centroid depth of about 4.0 km and an M w of 5.4 for the mainshock of the 2012 Brawley earthquake. Online Material: Figures showing examples of waveform fits, comparison of synthetic teleseismic waveforms using different grid sizes in the FD calculation, effect of soft sediment...

... data (Fig.  3 ). The 1D velocity model used in this inversion was derived by waveform modeling of a smaller M w  4.0 earthquake that occurred near the hypocenter of the M w  5.4 event (S. Wei et al. , unpublished manuscript, 2013). The 2012 Brawley earthquake swarm occurred in the Brawley...

... and McGuire, 2009 ; Chen and Shearer, 2011 ; Chen et al. , 2012 ). The most recent significant swarm occurred over the course of 1–2 days in August 2012 near the town of Brawley. It consisted of over 600 earthquakes, three of which had magnitudes of ∼5–5.4 ( Hauksson et al. , 2013 ; Wei et al. , 2013...

... gives way to the seismically active Brawley seismic zone (BSZ) ∼1.5 km east of Bombay Beach under the shallowest edge of the Salton Sea ( Figs. 1 and 2 ; Lin et al., 2007 ; Hauksson et al., 2012 ; Lin, 2013 ). The SAFZ is well exposed along Durmid Hill, the area between Salt Creek and Bombay Beach...

...N. Seth Carpenter; Edward W. Woolery; Zhenming Wang ABSTRACT The 10 November 2012 M w 4.2 Perry County earthquake may represent a continuation of the seismically active Eastern Tennessee seismic zone ( ETSZ ) farther north than previously recognized into southeastern Kentucky. The mainshock...

... Model version 5.0 (v.5.0). We evaluate model results against average fault‐slip rates from the Uniform California Earthquake Rupture Model v.3 (UCERF3) and geologic slip‐rate estimates from specific locations. The model results support continuous linkage from the SAF through the Brawley seismic zone...

... ( Bakun et al. , 2005 ). A single accelerometer installed to monitor the 1975 Brawley, California, earthquake swarm recorded in one day five M ∼ 3.5 earthquakes with more than 10 % g each and an M  4.3 earthquake that produced 25 % g ( Johnson and Hanks, 1976...

... the Iran Strong Motion Network using http://www.bhrc.ac.ir/portal/Default.aspx?tabid=635 (last accessed February 2012). The table providing the PGA values recorded at BHRC strong‐motion stations, corresponding to Fig.  1b , is available from the BHRC web site dedicated to the 2003 Bam earthquake...

... EEW system during the 2011 M w 9.0 Tohoku earthquake sequence. We assess PLUM using (a) a dataset of 193 magnitude 3.5+ earthquakes that occurred in southern California between 2012 and 2017 and (b) the ShakeAlert testing and certification suite of 49 earthquakes and other seismic signals. The latter...

.... For example, a previous E2 version (E2.2) missed 14% of the large earthquakes (M>3.5) in the 2012 Brawley swarm on 26–29 August. There were 21 M ANSS ≥3.5 events, and E2.2 reported only 18 of them. The three missed earthquakes occurred within 2 min of a larger event, and the overprinting of the signal...

.... Haase J. S. ( 2013 ). A new seismogeodetic approach applied to GPS and accelerometer observations of the 2012 Brawley seismic swarm: Implications for earthquake early warning , Geochem. Geophys. Geosyst. 14 , no.  7 , 2124–2142 , doi: 10.1002/ggge.20144 . Genrich J. F. Bock Y...

... and the Imperial fault. Surface creeping was found across the Imperial fault ( Lyons et al. , 2002 ). The Brawley Seismic Zone is geothermally active, and the seismogenic section of the fault is relatively shallow and may only be partially locked ( Allam and Ben‐Zion, 2012 ). The high strain rate across...

... of spatiotemporal clustering to model aftershocks and triggered events, the practical importance of which was exemplified by the 2011 M  6.3 Christchurch, New Zealand, earthquake (e.g., Kaiser et al. , 2012 ). Ultimately, this version of UCERF3 could form the basis of an operational earthquake forecast...

... earthquake, which demonstrated that aftershocks could be more damaging than their mainshock ( Kaiser et al. , 2012 ), the 2009 L’Aquila, Italy, earthquake also exemplified the potentially dire effects of earthquake triggering ( van Stiphout et al. , 2010 ). In fact, an international commission convened...

... network stations used for this study. The epicenter location and focal mechanism of several prominent earthquakes in the study area are shown, with the shade of the focal mechanism symbols indicating the focal depth. (Inset) Local map showing the 2012 M w  5.4 Brawley event. Stations WLA and SNR...

... earthquakes near the San Andreas fault are foreshocks to a large earthquake ( Agnew and Jones, 1991 ; Michael, 2012 ). There have been a number of serious challenges to the model, ranging from critiques of the length of the catalog used ( Howell, 1985 ) and the qualitative nature of the hypothesis ( Kagan...

..., and 22.82 mm in the 4 April 2010 M w  7.4 El Mayor–Cucapah earthquake ( Rymer et al. , 2011 ), and a mere 0.15 mm in the nearby Brawley earthquake of 2012 ( Hauksson et al. , 2013 ). The 2010 El Mayor triggered slip was remarkable (Fig.  10 ) in that all the slip occurred between two 15 min...

... Material: Figures of model resolution tests, cross‐sectional comparisons of different P ‐velocity models, and earthquake depth distributions. 25 September 2012 The southeast portion of southern California is one of the most seismically active regions in the world. In this area, the San...