This is a preliminary UCB moment tensor solution for the event located 31 km W of Petrolia, CA; 40.3193N 124.654W; Z=15km; ML=4.0; (USGS/UCB Joint Notification System) on September 08, 2007 at 08:16:28. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsus/Quakes/nc40201477.php Reviewed by: AIMIN CAO UCB Seismological Laboratory Inversion method: complete waveform Stations used: GASB, HUMO, JCC, WDC Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 3.30E+22 Dyne-cm Mw = 4.28 Z = 14 Plane Strike Rake Dip NP1 105 177 88 NP2 195 2 87 Principal Axes: Axis Value Plunge Azimuth T 3.300 4 60 N 0.000 86 251 P -3.300 1 150 Event Date/Time: September 08, 2007 at 08:16:28 Event ID: nc40201477 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -1.658 Mxy 2.849 Mxz 0.137 Myy 1.646 Myz 0.156 Mzz 0.012 ------- --------------##### -----------------######## ------------------########### --------------------############# --------------------############# --------------------############## T ---------------------############## # --------------------################### ######---------------#################### ############--------##################### ###################-##################### ###################-------############### ###################--------------######## #################---------------------- #################---------------------- ###############---------------------- ##############--------------------- #############-------------------- ##########------------------- ########------------- - ####-------------- P ------- Lower Hemisphere Equiangle Projection