This is a preliminary UCB moment tensor solution for the event 10
km WSW of the Geysers, CA (38.768N 122.913W; Z=6.7; ML=4.3) at
14:19:52 (UTC) on January 11, 2000. A Mw4.6 and depth of 5 km
were obtained from long-period waves recorded by ORV, BKS and
JRSC.
Best Fitting Double-Couple:
Mo = 9.57E+22 Dyne-cm
Mw = 4.62
Z = 5 km
Plane Strike Rake Dip
NP1 264 -28 66
NP2 6 -153 65
Principal Axes:
Axis Value Plunge Azimuth
T 9.570 0 315
N 0.000 54 46
P -9.570 36 225
Best regards,
Douglas Dreger
UCB Seismological Laboratory
Berkeley Moment Tensor Solution
Event Date/Time: prel
Moment Tensor: Scale = 10**22 Dyne-cm
Component Value
Mxx 1.643
Mxy -7.905
Mxz 3.292
Myy 1.685
Myz 3.154
Mzz -3.328
######-
#############------
################---------
T ##################----------
###################-----------
#######################------------
########################-------------
#########################--------------
###################------####----------
###########---------------############---
######--------------------###############
###-----------------------###############
--------------------------###############
--------------------------###############
------------------------###############
--------- ------------###############
-------- P -----------###############
------- -----------##############
-------------------##############
----------------#############
-------------############
---------##########
--#####
Lower Hemisphere Equiangle Projection