This is a preliminary UCB moment tensor solution for the event located 23 km SSE of Blue Lake, CA; 40.697N 123.868W; Z=27.2km; ML=4.1; (USGS/UCB Joint Notification System) on December 12, 2004 at 9:13:33 (UTC). Other information about this event can be viewed at: http://earthquake.usgs.gov/recenteqsUS/Quakes/nc40169464.htm Reviewed by: Dreger UCB Seismological Laboratory Inversion method: complete waveform Stations used: WDC YBH HUMO ORV HOPS Berkeley Moment Tensor Solution Best Fitting Double-Couple: Mo = 5.47E+22 Dyne-cm Mw = 4.46 Z = 27 km Plane Strike Rake Dip NP1 146 -162 80 NP2 53 -10 72 Principal Axes: Axis Value Plunge Azimuth T 5.470 6 279 N 0.000 69 173 P -5.470 20 11 Event Date/Time: December 12, 2004 at 9:13:33 (UTC) Event ID: nc40169464 Moment Tensor: Scale = 10**22 Dyne-cm Component Value Mxx -4.569 Mxy -1.680 Mxz -1.616 Myy 5.127 Myz -0.867 Mzz -0.558 ------- ----------- ----- #------------- P -------- ####------------ ---------- #######-------------------------- #########------------------------## ##########-----------------------#### ############---------------------###### ###########------------------######## T #############---------------########## ##############------------############ ##################---------############## ###################------################ ####################--################### ###################--################## ################------################# ###########------------############## ######-----------------############ ------------------------######### ------------------------##### -----------------------## ------------------- -------