This is a preliminary UCB moment tensor solution for the event 19 km SE
of Mammoth Lakes, CA (37.533N 118.833; Z=6km; ML=6.0; USGS/UCB Joint
Notification System) on May 15, 1999 at 13:22:10UTC. A average Mw5.6
was obtained from long-period waveforms and surface wave spectra. A
depth of 8 km was obtained using long-period complete waveforms.
COMPLETE WAVEFORMS BKS, ORV, PKD SURFACE WAVE SPECTRA
Best Fitting Double-Couple:
Mo = 2.31E+24 Dyne-cm 4.3e+24
Mw = 5.54 5.7
Z = 8 km 6.0
Plane Strike Rake Dip Strike Rake Dip
NP1 203 -11 85 203 13 79
NP2 294 -175 79 110 169 77
Principal Axes:
Axis Value Plunge Azimuth
T 2.310 4 249
N 0.000 78 359
P -2.310 11 158
Best regards,
Douglas Dreger
Hrvoje Tkalcic
UCB Seismological Laboratory
Berkeley Moment Tensor Solution
Event Date/Time: prel
Moment Tensor: Scale = 10**24 Dyne-cm
Component Value
Mxx -1.613
Mxy 1.542
Mxz 0.352
Myy 1.690
Myz -0.322
Mzz -0.077
-------
-----------------##
-------------------######
--------------------#########
---------------------############
---------------------##############
---------------------################
######----------------#################
############---------##################
##################---####################
####################---##################
###################-------###############
##################------------###########
##################---------------########
#############-------------------####
T ############----------------------##
############-----------------------
############-----------------------
##########-----------------------
########------------ ------
#####------------- P ----
##------------- -
-------
Lower Hemisphere Equiangle Projection