This is a preliminary UCB moment tensor solution for the event located
31 km W of Arcata, CA (40.857N 124.454W; Z=12.4km; ML=4.4; USGS/UCB
Joint Notification System) on September 22, 2000 at 10:50:27UTC. A Mw4.5
and depth of 24 km was obtained from long-period waves recorded by HOPS
WDC and YBH.
Best Fitting Double-Couple:
Mo = 5.50E+22 Dyne-cm
Mw = 4.46
Plane Strike Rake Dip
NP1 62 -21 83
NP2 155 -173 69
Principal Axes:
Axis Value Plunge Azimuth
T 5.500 10 110
N 0.000 68 226
P -5.500 20 17
Best regards,
Douglas Dreger
UC Berkeley Seismological Laboratory
Berkeley Moment Tensor Solution
Event Date/Time: prel
Moment Tensor: Scale = 10**22 Dyne-cm
Component Value
Mxx -3.824
Mxy -3.104
Mxz -1.984
Myy 4.272
Myz 0.375
Mzz -0.449
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#------------------
####------------ ------
######------------ P --------
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#########--------------------------
##########--------------------------#
############-----------------------####
############--------------------#######
##############----------------###########
###############------------##############
###############---------#################
################----#####################
################-################### ##
############-----################## T #
#######-----------################# #
#-----------------###################
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Lower Hemisphere Equiangle Projection