This is a preliminary UCB MT solution for the event 13 km NNE of Fort Bragg
CA (39.5625 N, 123.7673 W; Z=0km; ML=4.01; USGS/UCB Joint NOtification System)
on January 24, 1999 at 15:34:56UTC. An Mw=4.1 and depth of 5 km were obtained
from long-period waves recorded by HOPS, ORV and WDC.
Complete Waveforms
Best Fitting Double-Couple: SUrface waves
Mo = 1.47E+22 Dyne-cm 2.5e+22
Mw = 4.08 4.2
Z = 5 km 4 km
Plane Strike Rake Dip Plane Strike Rake Dip
NP1 311 115 49 271 47 27
NP2 96 64 47 137 71 71
Principal Axes:
Axis Value Plunge Azimuth
T 1.470 71 290
N 0.000 19 114
P -1.470 1 24
Best regards,
Douglas Dreger
UCB Seismological Laboratory
Berkeley Moment COMPLETE WAVEFORMS Tensor Solution
Event Date/Time: prel
Moment Tensor: Scale = 10**22 Dyne-cm
Component Value
Mxx -1.216
Mxy -0.588
Mxz 0.127
Myy -0.104
Myz -0.429
Mzz 1.319
-------
---------------- P
------------------- ---
-----------------------------
############---------------------
##################-----------------
######################---------------
#########################--------------
###########################------------
############### ############-----------
############### T #############----------
-############## ###############--------
---###############################-------
-----#############################-----##
------############################--###
---------########################--####
--------------#############-------###
---------------------------------##
--------------------------------#
-----------------------------
-------------------------
-------------------
-------
Lower Hemisphere Equiangle Projection