This is a preliminary UCB moment tensor solution for the event located 9 km NW of Parkfield, CA; 35.9533N 120.5020W; Z=11.5km; ML=5.2; (USGS/UCB Joint Notification System) on September 29, 2004 at 17:10:04 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc51148805.htm Reviewed by: Dolenc UCB Seismological Laboratory Inversion method: complete waveform Stations used: KCC, MHC, PACP, and SAO Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 4.45E+23 Dyne-cm Mw = 5.07 Z = 11. km Plane Strike Rake Dip NP1 236 6 87 NP2 146 177 84 Principal Axes: Axis Value Plunge Azimuth T 4.573 6 101 N -0.253 83 261 P -4.320 2 11 Source Composition: Type Percent DC 88.9 CLVD 11.1 Iso 0.0 Event Date/Time: September 29, 2004 at 17:10:04 UTC Event ID: nc51148805 Moment Tensor: Scale = 10**23 Dyne-cm Component Value Mxx -3.985 Mxy -1.668 Mxz -0.267 Myy 4.185 Myz 0.495 Mzz -0.200 ------ P ------------ ---- #------------------------ ####------------------------- #######-------------------------- #########------------------------## ###########--------------------###### #############-----------------######### ##############-------------############ ###############-----------############### ################--------################# ################------################### ###############-------################ #############---------################ T ##########------------############### ########---------------################ ####--------------------############# #-----------------------########### ------------------------######### ------------------------##### -----------------------## ------------------- -------