This is a preliminary UCB moment tensor solution for the event located 5 km NW of Parkfield, CA; 35.9285N 120.4780W; Z=9.96km; ML=4.7; (USGS/UCB Joint Notification System) on May 16, 2005 at 7:24:37 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40174895.htm Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: SAO HAST TO5C UO5C ARV FMP TIN Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 6.64E+22 Dyne-cm Mw = 4.51 Z = 11 km Plane Strike Rake Dip NP1 318 -169 86 NP2 227 -4 79 Principal Axes: Axis Value Plunge Azimuth T 6.640 5 92 N 0.000 78 338 P -6.640 11 183 Event Date/Time: May 16, 2005 at 7:24:37 UTC Event ID: nc40174895 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -6.388 Mxy -0.592 Mxz 1.177 Myy 6.564 Myz 0.628 Mzz -0.176 ------- ------------------- ------------------------- #---------------------------- #####-------------------------### ########-------------------######## ###########---------------########### ##############----------############### ################------################# ##################---#################### ###################-################### #################-----################# T ###############--------################ #############------------################ ###########---------------############# #########------------------############ #######---------------------######### ####------------------------####### ##---------------------------#### ----------------------------# ---------- ------------ ------- P --------- - ---