This is a preliminary UCB moment tensor solution for the event located 2 km NNW of the Geysers, CA; 38.814N 122.814W; Z=4.5km; ML=4.4; (USGS/UCB Joint Notification System) on May 12, 2006 at 10:37:29 (UTC). Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsus/Quakes/nc51170844.php Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: BRK CMB CVS GASB JCC ORV SUTB Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 1.44E+23 Dyne-cm Mw = 4.74 Z = 5 km Plane Strike Rake Dip NP1 7 -100 65 NP2 209 -70 27 Principal Axes: Axis Value Plunge Azimuth T 1.734 20 104 N -0.592 9 11 P -1.142 68 258 Source Composition: Type Percent DC 31.7 CLVD 68.3 Iso 0.0 Event Date/Time: May 12, 2006 at 10:37:29 (UTC) Event ID: nc51170844 Moment Tensor: Scale = 10**23 Dyne-cm Component Value Mxx -0.470 Mxy -0.510 Mxz -0.140 Myy 1.277 Myz 0.895 Mzz -0.807 ------- ###---------------- #####-------------------- ######----------------------- #######---------------------##### #######--------------------######## ########------------------########### ########------------------############# #######-------------------############# ########------------------############### #######------------------################ #######------- --------################ ######-------- P --------########## ### ######-------- -------########### T ### #####------------------########### ## ####-------------------################ ###-------------------############### ##-------------------############## #-------------------############# ------------------########### -----------------######## ---------------#### -------