This is a preliminary UCB moment tensor solution for the event located 42 km W of Ferndale, CA; 40.6155N 124.7525W; Z=7.8km; ML=3.7; (USGS/UCB Joint Notification System) on April 7, 2007 at 23:55:03 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsus/Quakes/nc40195415.php Reviewed by: Guilhem UCB Seismological Laboratory Inversion method: complete waveform Stations used: HOPS, JCC, WDC, YBH Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 2.00E+22 Dyne-cm Mw = 4.14 Z = 18 Plane Strike Rake Dip NP1 256 21 78 NP2 161 167 69 Principal Axes: Axis Value Plunge Azimuth T 2.004 23 120 N 0.000 66 284 P -2.004 6 28 Event Date/Time: April 7, 2007 at 23:55:03 UTC Event ID: nc40195415 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -1.134 Mxy -1.547 Mxz -0.542 Myy 0.842 Myz 0.536 Mzz 0.292 ------- ###-------------- #####--------------- P -- #######--------------- ---- #########------------------------ ##########------------------------- ############------------------------- #############-------------------------- #############-------------------------- ###############---------################# ###############--######################## ###########-----######################### ######----------######################### ###--------------######################## -----------------############## ##### -----------------############## T ##### -----------------############# #### -----------------################## -----------------################ -----------------############ ----------------######### ---------------#### ------- Lower Hemisphere Equiangle Projection