This is a preliminary UCB moment tensor solution for the event located 17 km WNW of Punta Gorda, CA (40.313N 124.549W; Z=4.4km; ML=3.7; USGS/UCB Joint Notification System) on May 4, 2002 at 12:54:23 (UTC). Other information about this event can be viewed at: http://ncedc.org/recenteqs/Quakes/nc51118164.html Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: HOPS ORV WDC JCC Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 5.69E+21 Dyne-cm Mw = 3.80 Z = 8 km Plane Strike Rake Dip NP1 256 164 88 NP2 347 2 74 Principal Axes: Axis Value Plunge Azimuth T 5.690 13 210 N 0.000 74 69 P -5.690 10 302 Event Date/Time: May 4, 2002 at 12:54:23 (UTC) Event ID: nc51118164 Moment Tensor: Scale = 10**21 Dyne-cm Component Value Mxx 2.463 Mxy 4.852 Mxz -1.564 Myy -2.573 Myz 0.193 Mzz 0.109 ####### ------############# ----------############### -------------################ ----------------################# ---------------################# - P ----------------################# -- ----------------################## ----------------------################# -----------------------###########------- ------------------------##--------------- -------------------#####----------------- ------------#############---------------- -----####################---------------- ########################--------------- #########################-------------- ########################------------- #######################------------ ###### #############----------- #### T #############--------- ## #############------- ###############---- #######