This is a preliminary UCB moment tensor solution for the event located 6 km NNW of Pinnacles, CA; 36.578N 121.179W; Z=9.2km; ML=4.0; (USGS/UCB Joint Notification System) on August 30, 2004 at 4:30:57 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40160590.htm Reviewed by: Dolenc UCB Seismological Laboratory Inversion method: complete waveform Stations used: BKS, CMB, MHC, and PKD Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 1.00E+22 Dyne-cm Mw = 3.97 Z = 11. km Plane Strike Rake Dip NP1 49 -4 89 NP2 140 -179 86 Principal Axes: Axis Value Plunge Azimuth T 9.958 2 95 N 0.165 86 217 P -10.122 3 4 Source Composition: Type Percent DC 96.7 CLVD 3.3 Iso 0.0 Event Date/Time: August 30, 2004 at 4:30:57 UTC Event ID: nc40160590 Moment Tensor: Scale = 10**21 Dyne-cm Component Value Mxx -9.966 Mxy -1.558 Mxz -0.623 Myy 9.822 Myz 0.320 Mzz 0.144 ---- P ---------- ------ ------------------------- ##--------------------------- #####---------------------------# #######------------------------#### ##########--------------------####### ############----------------########### ##############------------############# #################--------################ ##################----################### ####################################### ####################################### T #################-----################# #############----------################ ###########--------------############## ########------------------########### #####---------------------######### #--------------------------###### ---------------------------## ------------------------- ------------------- -------