This is a preliminary UCB moment tensor solution for the event located 99 km W of Petrolia, CA; 40.422N 125.445W; Z=2.5km; ML=4.4; (USGS/UCB Joint Notification System) on January 8, 2003 at 05:43:41 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40139818.htm Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: JCC YBH WDC ORV HOPS Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 3.89E+22 Dyne-cm Mw = 4.36 Z = 5 km Plane Strike Rake Dip NP1 96 170 86 NP2 187 4 80 Principal Axes: Axis Value Plunge Azimuth T 3.890 10 51 N 0.000 79 254 P -3.890 4 142 Event Date/Time: January 8, 2003 at 05:43:41 UTC Event ID: nc40139818 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -0.888 Mxy 3.728 Mxz 0.637 Myy 0.794 Myz 0.336 Mzz 0.094 ------# -----------######## --------------########### ---------------############## ----------------############# # -----------------############# T ## ------------------############# ### ------------------##################### ------------------##################### -------------------###################### #-----------------####################### #############-----####################### ##################-------------########## ##################----------------------- #################---------------------- #################---------------------- ################--------------------- ##############--------------------- ##############------------- --- ############------------- P - ##########------------- #######------------ #------