This is a preliminary UCB moment tensor solution for the event located 111 km W of Ferndale, CA; 40.594N 125.580W; Z=5.1km; ML=3.8; (USGS/UCB Joint Notification System) on April 28, 2005 18:31:20 UTC. Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40174244.htm Reviewed by: DREGER UCB Seismological Laboratory Inversion method: complete waveform Stations used: HOPS HUMO WDC Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 1.15E+22 Dyne-cm Mw = 4.01 Z = 14 km Plane Strike Rake Dip NP1 20 -3 87 NP2 110 -177 87 Principal Axes: Axis Value Plunge Azimuth T 11.500 0 65 N 0.000 86 155 P -11.500 4 335 Event Date/Time: April 28, 2005 18:31:20 UTC Event ID: nc40174244 Moment Tensor: Scale = 10**21 Dyne-cm Component Value Mxx -7.316 Mxy 8.806 Mxz -0.768 Myy 7.379 Myz 0.360 Mzz -0.063 ------- P -------------### --- -------------###### --------------------######### ----------------------########### ----------------------############# ----------------------############## T -----------------------############## ####------------------################# #########--------------################## ##############--------################### ###################--#################### #####################---################# ####################---------############ ##################----------------##### #################---------------------- ################--------------------- ##############--------------------- ############--------------------- ##########------------------- #######------------------ ###---------------- -------