This is a preliminary UCB moment tensor solution for the event located 62 km W of Petrolia, CA; 40.376N 125.014W; Z=9km; ML=5.0; (USGS/UCB Joint Notification System) on May 9, 2007 at 7:50:05 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsus/Quakes/nc51181705.php Reviewed by: Guilhem UCB Seismological Laboratory Inversion method: complete waveform Stations used: GASB, HUMO, JCC and WDC Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 7.81E+23 Dyne-cm Mw = 5.20 Z = 11 Plane Strike Rake Dip NP1 188 24 85 NP2 96 175 66 Principal Axes: Axis Value Plunge Azimuth T 7.810 20 54 N 0.000 66 199 P -7.810 13 320 Event Date/Time: May 9, 2007 at 7:50:05 UTC Event ID: nc51181705 Moment Tensor: Scale = 10**23 Dyne-cm Component Value Mxx -1.970 Mxy 6.908 Mxz 0.180 Myy 1.418 Myz 3.184 Mzz 0.552 ------# ------------####### --------------########### -- -----------############# ---- P -----------############### ----- ----------########### ### -------------------########### T #### --------------------########### ##### -------------------#################### --------------------##################### --------------------##################### ###----------------###################### ######-------------###################### ###########--------##################---- ##################--########----------- #################---------------------- ################--------------------- ###############-------------------- ##############------------------- ############----------------- ##########--------------- #######------------ #------ Lower Hemisphere Equiangle Projection