...Diane I. Doser Abstract Body waveform inversion techniques are used to study the source parameters of four earthquakes occurring between 1937 and 1954 along the southern San Jacinto and Imperial faults (1937 Buck Ridge, 1940 Imperial Valley, 1942 Borrego Mountain, and 1954 Salada Wash events). All...

.... 1954 Arroyo Salada Earthquake. We relocated the 19 March 1954 earthquake (ML 6.2) using P-wave arrival times at stations PLM, BAR, RVR, and BBC, ranging in distance from 60 to 140 km and spanning 110 ° in azimuth. The ML >= 3.9 aftershocks were relocated using P- and S-wave arrival times recorded...

... October 1942 Superstition Mountain earthquake and a secondary event that took place about 9 hours later under the Salton Sea, and the 19 March 1954 Arroyo Salada earthquake. We had insufficient data to accurately relocate the 1937 event, but we were able to obtain a moment estimate. We use the 1968...

... and Richter, 1958). 1952 Bryson (521122). Location and focal mechanism (Dehlinger and Bolt, 1987). Magnitude (Ellsworth, 1990). 1954 Arroyo Salada. Location (Richter, 1958; Sanders et al., 1986). Focal mechanism (Doser, 1990b). M0 = 3 X 1018 N-m (Hanks et al., 1975), 2.4 + 0.3 X 10is N-m (Doser, 1990b), 1.9 X...

... Mountains (Fig. 7). Aftershock activity does not extend under Superstition Moun- tain. Aftershocks of the 1954 Arroyo Salada earthquake, on the Clark strand of the San Jacinto fault zone, extend southeastward from the 1954 main shock (Sanders et al., 1986) but do not cross the basement embayment just north...

... level. Significant earthquakes rupturing the Imperial fault occurred in 1940 and 1979, with moment magnitudes M of 7.0 and 6.5, respectively. Along the southern San Jacinto fault zone, recent M 6 events are the 1954 Arroyo Salada (M -- 6.4), the 1968 Borrego Mountain (M -- 6.5), the 1942 Lower Borrego...

... Valley: Hutton and Jones ( 1993 ). 14 Jun 1953 32.950 -115.717 5.5 M L Brawley: Hutton and Jones ( 1993 ). 19 Mar 1954 33.283 -116.183 6.3 M W Arroyo Salada: Stein and Hanks ( 1998 ); Hutton and Jones ( 1993 ). 19 Mar 1954 33.283 -116.183 5.5 M L Arroyo Salada: Aftershock...

... parameters of earthquakes and the relative stress levels in seismic zones , Ph.D. Thesis , Calif. Inst. Tech. * Present address: Seismological Laboratory, California Institute of Technology, P.O. Bin 2, Arroyo Annex, Pasadena, California. 14 11 1969 Copyright © 1970...

... 119.02 Wheeler Ridge 1 27 1419 35.15 t18.63 2 1 423 32.30 115.30 2 1 432 32.30 115.30 aftershock 2 1 1305 32.30 115.30 aftershock 3 19 954 33.29 116.18 Arroyo Salada 3 19 955 33.28 116.18 aftershock 3 19 1021 33.28 116.18 aftershock 3 23 414 33.28 116.18 aftershock 5 23 2352 34.98 118.98 4 25 1043 32.33...

... and filled in response to changes in crustal thickness, sediment input, and deformation associated with development of the San Andreas fault. While it is well known that transtensional deformation resulted in deep subsidence and basin filling during Miocene to Pleistocene time ( Dibblee, 1954 , 1984...

... ; Doser, 1992 ), and the 1937 M w  5.6 Terwilliger Valley and the 1954 M w  6.3 Arroyo Salada earthquakes along the central and southern sections of the fault, respectively ( Sanders et al. , 1986 ; Doser, 1990 ). On the northernmost portion of the SJF zone, at least two historical earthquakes...

... . Doser D. I. (1990) . Source characteristics of earthquakes along the southern San Jacinto and Imperial fault zones (1937 to 1954) , Bull. Seism. Soc. Am. 80 , 1099 - 1117 . Doser D. I...