This is a preliminary UCB moment tensor solution for the event located 23 km NW of San Simeon, CA; 35.780N 121.382W; Z=6.7km; ML=4.0; (USGS/UCB Joint Notification System) on February 20, 2007 at 16:46:13 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsus/Quakes/nc40193746.php Reviewed by: Xue UCB Seismological Laboratory Inversion method: complete waveform Stations used: HAST PKD RAMR PMPB V03C Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 4.96E+21 Dyne-cm Mw = 3.73 Z = 8 Plane Strike Rake Dip NP1 151 137 59 NP2 267 39 54 Principal Axes: Axis Value Plunge Azimuth T 4.960 51 116 N 0.000 39 302 P -4.960 3 210 Event Date/Time: February 20, 2007 at 16:46:13 UTC Event ID: nc40193746 Moment Tensor: Scale = 10**21 Dyne-cm Component Value Mxx -3.339 Mxy -2.914 Mxz -0.864 Myy 0.352 Myz 2.295 Mzz 2.987 ------- ------------------- ##----------------------- ####------------------------- ######--------------------------- #######---------------------------- ########----------------------------- #########----################---------- ########--########################----- #####------###########################--- ###---------############################- #------------############################ -------------############## ########### --------------############# T ########### ---------------########### ########## ----------------####################### ----------------##################### -----------------################## ------------------############### --- ------------########### - P ---------------###### ------------------ ------- Lower Hemisphere Equiangle Projection