This is a preliminary UCB moment tensor solution for the event located 22 km WNW of Punta Gorda, CA (40.319N 124.611W; Z=0.2km; ML=4.3; USGS/UCB Joint Notification System) on May 4, 2002 at 13:56:31 UTC. Other information about this event can be viewed at: http://ncedc.org/recenteqs/Quakes/nc51118171.html Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: HOPS JCC ORV WDC Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 4.54E+22 Dyne-cm Mw = 4.40 Z = 5 km Plane Strike Rake Dip NP1 353 -8 85 NP2 84 -175 82 Principal Axes: Axis Value Plunge Azimuth T 4.540 2 39 N 0.000 81 142 P -4.540 9 308 Event Date/Time: May 4, 2002 at 13:56:31 UTC Event ID: nc51118171 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx 1.039 Mxy 4.370 Mxz -0.312 Myy -0.930 Myz 0.666 Mzz -0.109 -###### --------########### -----------############# T -------------############# -------------################# - P -------------################## -- -------------################### --------------------################### --------------------################### ---------------------#################### ---------------------###################- ----------------------###########-------- --------------------##------------------- ######################------------------- #####################------------------ #####################------------------ #####################---------------- ####################--------------- ###################-------------- #################------------ ###############---------- ############------- ######-