Mantle Downwelling Beneath the Transverse Range
San Jacinto Fault Zone Advisories
&
MT ULF Updates
Released by
GeoSeismic Labs of California
(View MT ULF REPORTS published in October 2004)
(View MT ULF REPORTS published in November 2004)
(View MT ULF REPORTS published in December 2004)
(View MT ULF REPORTS published in January 2005)
(View MT ULF REPORTS published in February 2005)
(View MT ULF REPORTS published in March 2005)
(View MT ULF REPORTS published in April 2005)
(View MT ULF REPORTS published in May 2005)
(View MT ULF REPORTS published in June 2005)
(View MT ULF REPORTS published in July 2005)
(View a previously Published MT ULF REPORT
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MT ULF UPDATE: August 1, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was strong infrasonic harmonic resonant activity below 2 Hz on Monday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 0.11 Hz (-66.36 dBv).
The ULF and MT activity level was moderate to high during the past 24 hours. The inferred mean average unclamping level was higher.
The ULF mean average was increased (positive). The MT peak reading was measured at 8.7 units of regional lithospheric stress.
The MT mean average was measured at 7.7 units. There were no detected ULF suppression incidents. There were no periods with severe
unclamping (dilatancy). There was upper level infrasonic resonant harmonic activity at 5 Hz observed on the electronic
tracking filter. There were no periods with detected geomagnetic oscillation or any significant long duration
piezomagnetic burst activity.
M3.1 2005/08/01 05:24:42 36.684 -121.309 4.3 12 km ( 7 mi) S of Tres Pinos, CA
M3.1 2005/08/01 05:00:11 36.681 -121.304 4.3 12 km ( 8 mi) S of Tres Pinos, CA
All daily charts were updated to reflect
the latest analysis.
General Discussion:
Early in the period, there was strong ULF signal burst activity associated with a micro quake swarm epicentered near Niland, CA
within the Brawley Seismic Zone, a conjugate strike-slip fault region which extends up the Imperial Valley from the Imperial fault towards the
Southern San Andreas fault (Bombay Beach).
The Current Statement Summary is periodically updated.
01-AUG-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
01-AUG-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
01-AUG-2005 15:00 - 18:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
01-AUG-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
01-AUG-2005 21:00 - 24:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
02-AUG-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: August 2, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was moderate infrasonic harmonic resonant activity below 2 Hz on Tuesday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 0.94 Hz (-71.52 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level was lower.
The ULF mean average was decreased (negative). The MT peak reading was measured at 8.9 units of regional lithospheric stress.
The MT mean average was measured at 7.6 units. There were no detected ULF suppression incidents. There were no periods with severe
unclamping (dilatancy). There was upper level infrasonic resonant harmonic activity at 5 Hz observed on the electronic
tracking filter. There were no periods with detected geomagnetic oscillation or any significant long duration
piezomagnetic burst activity.
All daily charts were updated to reflect
the latest analysis.
General Discussion:
Early in the period, there was strong ULF signal burst activity associated with a micro quake epicentered in an offshore region
SW of Rancho Palos Verdes, CA within San Pedro Channel. Later on, there was a long duration extremely low frequency ULF signal burst
associated with a micro quake epicentered near Ludlow, CA and the ECSZ/Mojave Desert Block.
02-AUG-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
02-AUG-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
02-AUG-2005 15:00 - 18:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
02-AUG-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
02-AUG-2005 21:00 - 24:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
Statement Summary:
It's inferred that recently detected strong infrasonic resonant harmonics are related to a general rise in deep crustal
resonant energy coming from along the Pacific & North American Plate Boundary in Baja, and Southern California. The current
infrasonic harmonics are associated with high a lithospheric stress level along the San Andreas fault zone( Mojave Desert Block/ECSZ)
from Southern to South-Central California, which affects the Walker Lane/ Owens Valley region as it nucleates into Northern
California. It then nucleates westward at the southern edge of the Cascades Range near Burney, CA (5.10.2005/M4.4) and into the
offshore Mendocino-Triple-Junction Subduction zone to the west of Crescent City and Petrolia, CA(6.14.2005/M7.2, 6.16.2005/M6.7
respectively). The same crustal stress also nucleates westward along the Garlock fault zone and the border between the Southern
Sierras batholith / Mojave Desert Block near Tehachapi/Arvin/Keene, CA(9.29.2004/M5.0) where it crosses the Plate boundary at the
Grapevine, near Mettler (4.16.2005/M5.2), and Frazier Park, CA (4.15.2005/M3.1) at the western end of the big bend along the San
Andreas fault and Pine Mountain-Big Pine-Hosgri fault system, which ultimately affects the crustal stress level at the Central
California Coast near San Simeon/Cayucos and Paso Robles, CA(12.22.2003/Mw6.5).It may also be the source of the stress trigger
for the long predicted Parkfield Experiment M6.0 earthquake on September 28, 2004. It also affects the lithospheric stress level
along major faults in the Inland Empire of Southern California, where there was a recent fifty mile distant pairing of moderate
earthquakes near both the Anza Seismic Gap(6.12.2005/M5.2) , and at Yucaipa, CA(6.16.2005/M4.9) which are inferred to be related
to stress nucleation out of the Salton Sink/Coachella Valley region being driven alternately by the ECSZ and the Gulf of California
to the south, along the Southern San Andreas Fault, which hasn't had a strong earthquake within the past 350 years.
The newly analyzed infrasonics are indicating that the source of this stress (1.04 Hz) is extremely close to Southern California
latitudes at the Pacific and North American Plate Boundary (ECSZ), where 34.0 degrees North is inferred to equal 1.0 Hz. We may now
potentially be very close in timing to the next strong seismic event epicentered in the Southern California region. We should also
proceed to a heightened level of alert whenever solar induced-geomagnetic earth activity appears (6.13.2005/Chile M7.8). The long
duration periods with sub-ionospheric ULF wave absorption are an excellent indicator to when the activity begins to surface. However,
I must emphasize that not everything is yet known about how this works, and I must warn you to be prepared for an event which is higher
in magnitude. Danger also arises if the deep resonant harmonic energy is vectored through a volcanic center, of which the Walker Lane
Owens valley region has many in the direction of the energy coming out of the ECSZ and towards the Coso Volcanic Center, Long
Valley Caldera, and the Inyo/Mono Basin Craters. Additionally, any major seismic or volcanic activity epicentered from Central America
to Central Mexico, appears to increase the lithospheric stress along the Pacific & North American Plate Boundary in Baja and Southern
California.
Scientific Earthquake Prediction is by no means an exact science, and much more work still needs completion
before it's out of the experimental stages of development. You can compare this with looking at the Moon
through a telescope, and arriving in a spaceship at Trinity Base. We are still looking at it through a focused lens
and just beginning to take the step into outer space via satellite detection. My goal is to fill in the gaps down
here at earth level. the Mojave segment along the San Andreas fault, the Garlock fault, the San Jacinto fault, and the Mojave
Desert Block are my favorite subjects. From the Gulf of California to Parkfield in Central California is my general zone of
exploratory research. Anything outside of this is done for extra credit.
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Infrasonic harmonic pulsations and spectrum content, detected
