This is a preliminary UCB moment tensor solution for the event located 40 km WNW of Paso Robles, CA; 35.699N 121.116W; Z=5.6km; ML=4.3; (USGS/UCB Joint Notification System) on December 23, 2003 at 3:46:00 (UTC). Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40149108.htm Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: BDM KCC MHC SAO Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 3.07E+22 Dyne-cm Mw = 4.29 Z = 14. km Plane Strike Rake Dip NP1 162 -162 90 NP2 72 0 72 Principal Axes: Axis Value Plunge Azimuth T 3.070 13 296 N 0.000 72 162 P -3.070 13 28 Event Date/Time: December 23, 2003 at 3:46:00 (UTC) Event ID: nc40149108 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -1.716 Mxy -2.362 Mxz -0.293 Myy 1.716 Myz -0.902 Mzz 0.000 ------- ####--------------- #######------------ --- ##########----------- P ----- ############----------- ------- ##############--------------------- # ############--------------------- ## T ############---------------------- ## #############--------------------# ###################------------------#### ####################--------------####### ####################-----------########## #####################------############## ######################################### ###############------################## ----------------------################# ---------------------################ ---------------------############## ---------------------############ -------------------########## ------------------####### ---------------#### -------