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Links to Phenomena Associated with Earthquakes Worldwide
Icelandic water making waves in seismology: Iceland
Earthquakes—Rattling the Earth’s Plumbing System: USA
Earthquake Lights: Kobe Earthquake in Japan 1995: Japan
Novel Mobile and Portable Methods for Detecting Rock Failure: Great Britain
Recent Infrasonics Associated with Deep
Crustal Resonant Frequency Activity
along
the Pacific and North American Plate Boundary
The Great Sumatra Earthquake and Tsunami
December 26, 2004
Mw 8.9 earthquake in Sumatra on December 26th, 2004 at 00:58 UTC
The Great Earthquake and Tsunami of 26 December 2004 in Southeast Asia
Preliminary report of numerical computation of tsunamis
generated by the December 26, 2004
Off Sumatra Island Earthquake, Indonesia
India’s last active volcano erupts in Andaman Islands
Info about Barren 1 Active Volcano in Andaman Islands, India
The Indian Ocean Tsunami
Volcanic Cone Collapses and Tsunamis
An unstable volcano is a potential source for a Tsunami.
Weakened and fractured material may give way and cause a collapse.
The most common cause is intrusion of magma, which causes a detachment.
Injection of magma into the interior of the volcano causes the volcanic cones to inflate, and the magma pushes
out part of the volcano. Magma filling steep faults and fractures can provide a lubricated surface along which
collapse may take place. The pore pressure within a volcano may increase owing to the presence of intruding magma,
the volcano being squeezed by geological (tectonic) stresses; extra water within the volcano caused by increased rainfall,
or a change in the local drainage system.
Earthquakes that "shake" the volcano.
Weakening of the volcano caused by heat and hot fluids in the interior of the volcano that alter hard volcanic rocks
into soft clay.
Slippage along the surface on which the volcano is built, caused by a low-angle fault or lubricants such as clays or
injected magma.
The volcano becomes too steep and high, regular volcanic eruptions pile more and more volcanic materials onto the upper
slopes of the volcano which then is susceptible to collapse through gravity.
Historical Cone Collapses in the Southwest Pacific
Ritter (PNG) 1888. Major cone collapse without signs of volcanic eruptions
led to the formation of a Tsunami 12 to 15 meters high on nearby islands. An early missionary
map shows the positions of villages in western New Britain that no longer exist. Several
hundred people were probably killed.
Ambae (Vanuatu) 1913. A lateral collapse after a large earthquake generated a landslide that
Caused possibly about 50 deaths.
White Island (New Zealand) 1914. This volcano located 48 kilometers offshore from the
North Island has a horse-shoe shaped crater just above sea-level. Part of the crater rim
collapsed along a fault on or about September 10th and fell to the crater floor. There were 11
fatalities. No Tsunamis were reported.
Ruapehu (New Zealand) 1953. The upper portion of Ruapehu's crater wall failed on Christmas
Eve releasing more than 1 million cubic meters of Crater Lake waters. The collapse was
relatively small but resulted in a devastating lahar that swept away a railway bridge as the
main Wellington-Auckland express train was crossing and 151 lives were lost in what has
become known as the Tangwai Disaster.
Tinakula (Solomon Islands) 1966. A landslide of unknown cause slipped into the sea from
the high wall of an ancient avalance amphitheater. There may have been a Tsunami but no
lives were lost.
Lopevi (Vanuatu) 1975. A landslide associated with a lava flow from the summit crater
plunged into the sea. No Tsunami was recorded but the residents have now been permanently evacuated.
-
Australian Geological Survey, Geological Survey of Papua New Guinea
Mt. Ruapehu-Crater-Lake (Fact Sheet)
Early Warnings When the Volcano Starts to Slip
Cumbre Vieja Volcano - Potential Collapse and Tsunami at La Palma, Canary Islands
JAN-2005: Bulletin of the Global Volcanism Network
Major North American Volcanoes of Interest
North American Volcanic Unrest Updates
Eastern California Shear Zone
CA/NV Border/Eastern Sierras/Yellowstone
Tectonic and Volcanic Activity
How Volcanoes Work
Yellowstone Swarm Report: 2004
Volcanoes of Canada
The Long Valley Caldera: White Mountains Region
Living With a Restless Caldera:Long Valley, California
Future Eruptions in California's Long Valley Area--What's Likely
Adobe Hills Volcanic Field
Summary of Holocene eruptive activity
and probable greatest hazards from future eruptions
at volcanic centers in California
Eruptions from the Inyo chain about 600 Years ago:
sequence of events and effects in the Long Valley Area
Long Valley Tilt Meters
Photo Gallery of the Long Valley area, California
ERS radar interferometry reveals strain transient
in the Eastern California Shear Zone
Lithospheric Dynamics and Continental Deformation
USGS California Tiled 2 Degree Maps
USGS California Quarternary Fault and Fold Database Maps
Time-Dependent Viscoelastic Stress Transfer and Earthquake Triggering
Inferring Viscous Properties of the Lithosphere
Potential Sources for Earthquakes in Northern California
Pulling the Rug Out from Under California
Giant Earthquakes Beneath Canada's West Coast
The role of stress transfer in earthquake occurrence
The San Andreas Fault System: General Information, Data, Maps, Charts and Graphics
Volcanoes and the San Andreas Fault
The San Andreas Fault system through the Transverse Ranges as illuminated by earthquakes
Deep Tremors Along the San Andreas Fault
Aftershocks of the 1952 Tehachapi Earthquake
San Jacinto Fault Zone Advisory
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 the previous MT ULF REPORT
(View the Current MT ULF REPORT
MT ULF UPDATE: March 1, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic harmonic activity below 2 Hz on Tuesday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.99 Hz (-74.59 dBv).
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level was slightly lower during the
past 24 hours. The ULF mean average was increased (positive), and reached a new highest point on the chart.
All daily charts were updated to reflect the latest analysis.
There was an infrasonic harmonic signal at 5 Hz during the early morning hours, which appears to be related to the
Plate boundary in Southern California and the Inland Empire region.
01-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
01-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
01-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 2, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic harmonic activity below 2 Hz on Wednesday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.97 Hz (-75.42 dBv).
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average was slightly decreased (negative).
All daily charts were updated to reflect the latest analysis.
There was a period with strong ULF activity associated with a micro quake epicentered near Ocotillo Wells, CA.
02-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 3, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic harmonic activity below 2 Hz on Thursday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.96 Hz (-76.85 dBv).
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average increased (positive)to a new highest point.
All daily charts were updated to reflect the latest analysis.
M3.0 2005/03/03 15:11:10 UT 32.061N 115.435W d:6.0 km ( 25 mi) SW of Guadalupe Victoria, Mexico
03-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
GVP/USGS Weekly Volcanic Activity Report, 23 Feb.- 1 Mar. 2005
03-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
03-MAR-2005 15:00 - 18:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
03-MAR-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
M1.5 2005/03/03 18:31:20 UT 32.722N 116.042W 8.8 km ( 3 mi) WSW of Ocotillo, CA
4 mi. SSW of the Elsinore Fault
M1.7 2005/03/03 18:31:20 UT 32.721N 116.039W 8.1 km ( 3 mi) WSW of Ocotillo, CA
4 mi. SSW of the Elsinore Fault
M3.0 2005/03/03 15:11:10 UT 32.061N 115.435W 6.0 km ( 25 mi) SW of Guadalupe Victoria, Mexico
42 mi. S of the Imperial Fault
M1.4 2005/03/03 12:27:33 UT 33.147N 116.516W 5.3 km ( 7 mi) NE of Julian, CA
5 mi. NNE of the Elsinore Fault
MT ULF UPDATE: March 4, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was moderate infrasonic harmonic activity below 2 Hz on Friday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.54 Hz (-72.56 dBv).
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average slightly increased (positive)to a new highest point.
All daily charts were updated to reflect the latest analysis.
The most recently detected ULF activity was inferrd to be associated with a micro quake epicentered near
near San Fernando, CA and Klamath Falls, OR.
04-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
04-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
M2.8 2005/03/04 12:23:57 UT 37.216N 119.805W d:17.2 km ( 3 mi) NW of Yosemite Lakes, CA
M2.0 2005/03/04 12:50:44 36.103 -117.897 4.5 8 km ( 5 mi) NE of Coso Junction, CA
M2.4 2005/03/04 13:51:14 42.207 -121.988 3.7 17 km ( 11 mi) W of Klamath Falls, OR
MT ULF UPDATE: March 5, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic harmonic activity below 2 Hz on Saturday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.97 Hz (-75.44 dBv).
The ULF and MT activity level was extremely low during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average increased (positive)to a new highest point.
All daily charts were updated to reflect the latest analysis.
As already noted above, the level of ULF activity was extremely low, and that is a significant change
from just 24 hours ago. The seismic swarm in the Eastern Sierras at Mammoth Lakes, CA may be related to this change.
M3.3 2005/03/06 01:27:09 UT 40.486 124.763W d:21.4 km ( 27 mi) WSW of Ferndale, CA
M3.0 2005/03/06 03:09:38 UT 37.634 118.835W d:9.1 km ( 8 mi) E of Mammoth Lakes, CA
March 5 11:00 h (17:00 GMT):
In the last 24 hours, the monitoring system of Popocatpetl volcano recorded 16 exhalations
accompanied by steam, gas and some of them with small amounts of ash. Also, high frequency low
amplitude tremor episodes were detected for about 40 minutes.
05-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
Popocatpetl volcano exhalation
MT ULF UPDATE: March 6, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic harmonic activity below 2 Hz on Sunday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.66 Hz (-74.42 dBv).
The ULF and MT activity level was again extremely low during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average increased (positive)to a new highest point.
All daily charts were updated to reflect the latest analysis.
06-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
07-MAR-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 7, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no notable harmonic activity below 2 Hz on Monday.
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average decreased (negative).
All daily charts were updated to reflect the latest analysis.
There was a period with an upper level infrasonic resonant harmonic which was related to a micro quake epicentered near
Cabazon, CA.
07-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
07-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
M1.5 2005/03/07 12:27:43 UT 33.592N 116.826W d:14.1 km ( 9 mi) WNW of Anza, CA
M1.6 2005/03/07 12:15:54 UT 33.895N 116.810W d:12.5 km ( 3 mi) WSW of Cabazon, CA
MT ULF UPDATE: March 8, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was harmonic activity below 2 Hz on Tuesday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 1.89 Hz (-75.60 dBv).
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average significantly decreased (negative).
All daily charts were updated to reflect the latest analysis.
ULF Activity was detected from near Borrego Springs, CA and the San Jacinto fault zone. The analysis for the recent eruption
at Mount Saint Helens, WA is not yet completed, and was left out of this report. Preliminarily, there appears to be a
an MT disturbance and ULF signal burst associated with it.
08-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
March 8, 2005 Mount St. Helens Information Statement
09-MAR-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 9, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was strong harmonic activity below 2 Hz on Wednesday.
The Peak (Crustal) Infrasonic Harmonic Resonant Frequency was measured at 0.17 Hz (-70.07 dBv).
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average significantly decreased (negative). The MT peak reading
for the inferred regional lithospheric stress level was elevated to nearly 9.5 Units.
All daily charts were updated to reflect the latest analysis.
M3.0 2005/03/10 04:08:54 UTC 32.198N 115.419W d:15.9 31 km ( 19 mi) WSW of Guadalupe Victoria, Mexico
On Wednesday, significant Piezomagnetic activity was observed and inferred to be associated with the Western Garlock fault
zone near Mojave, CA. The ULF and MT activity observed during the period of yesterday's eruption at Mount Saint Helens was nomimal.
It's rare to observe an anomaly during an actual event. It usually occurs over a period of days leading up to either
an earthquake or volcanic eruption. However, there may be residual stress changes now taking place, including that
which was observed for the recent offshore moderate seismic activity that preceded the eruption. The other factor is
the change to an extremely low peak frequency infrasonic harmonic when compared to recent observations. The lowest frequencies are
inferred to be associated with an increase in deep crustal stress along the Pacific and North American Plate Boundary.
Currently, there is another observed burst in piezomagnetic activity that appears to be associated with the predicted high
Spring-tides, which are now in effect.
09-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
GVP/USGS Weekly Volcanic Activity Report, 2-8 Mar. 2005
MT ULF UPDATE: March 10, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Thursday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.69 Hz (-73.98 dBv).
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average significantly decreased (negative).
All daily charts were updated to reflect the latest analysis.
10-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
10-MAR-2005: Popocatpetl volcano Exhalation
MT ULF UPDATE: March 11, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no detected infrasonic resonant harmonic activity below 2 Hz on Friday.
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average significantly decreased (negative) for the fourth
consecutive day. All daily charts were updated to reflect the latest analysis.
The most recent ULF activity appears to be associated with the Northern California Coast and includes a long period with
detected pulsed ULF signal burst activity. ULF activity significantly increased during the evening hours and appears to
have significantly increased after a micro quake epicentered near Petrolia, CA. The offshore and coastal region
should now be under an advisory. Previous areas with precursor ULF signal burst activity with pulsations was the Adobe Hills
Volcanic field, east of Mono basin and the Long Valley Caldera (Mammoth Lakes, CA) just prior to a vigorous seismic swarm. The
recently observed increase in Piezomagnetic activity from along the Garlock Fault Zone may have been an indication of a stress
nucleation event out of the ECSZ /Mojave Desrt Block and into the Eastern Sierras and the Central California Coastal region.
Infrasonic Harmonic activity was also increasing along with a change towards having several large spikes in harmonic content.
The disturbance in infrasonic activity appears to be associated with the Pacific and North American Plate boundary. Within
48 hours after I reported a signifcant change in having an unusually low frequency resonant infrasonic harmonic at 0.17 Hz
there was a notable eruption at the Colima Volcano, Mexico.
The New Moon and Associated
Spring Tides
Advisory is Now in Effect!
11-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
11-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
11-MAR-2005 15:00 - 18:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
M4.6 2005/03/11 15:28:25 UT 50.494N 128.185W d:10.0 km (135 mi) WNW of Campbell River, Canada
MT ULF UPDATE: March 12, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Saturday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.43 Hz (-72.82 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average slightly decreased (negative).
All daily charts were updated to reflect the latest analysis.
M3.4 2005/03/12 10:58:17 40.692 -124.709 13.9 40 km ( 25 mi) WNW of Ferndale, CA
A long period with detected pulsed ULF signal burst activity continued during Saturday. Increased ULF activity is apparently
related to current stress changes along the Pacific and North American plate boundary in Southern California. So the region
from the Salton Sea to the Cajon Pass along the San Andreas fault needs to be prepared just in case this long period
of ULF pulsation is a precursor to another earthquake.
12-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
12-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
13-MAR-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 13, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was strong infrasonic resonant harmonic activity below 2 Hz on Sunday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at an extremely low 0.11 Hz (-63.94 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average slightly increased (positive).
All daily charts were updated to reflect the latest analysis.
M4.2 2005/03/13 22:09:12 37.453 -118.840 7.1 19 km ( 12 mi) SW of Toms Place, CA
3.5 2005/03/13 23:43:15 33.302 -116.851 13.6 6 km ( 4 mi) S of Palomar Observatory, CA
A long period with detected pulsed ULF signal burst activity continued during Sunday. The increase in ULF activity is apparently
related to a crustal stress change taking place along the Pacific and North American plate boundary in Southern California. Today's
small earthquake epicentered north of Palomar Mountain appears to be related to it. Yesterday, I was concerned that deep crustal
stress had nucleated out of the Gulf of California and into the region from the Salton Sea to the Cajon Pass along the plate boundary.
Today's peak at 0.11 Hz in the infrasonic resonant harmonic is an indication that the tectonic stress in Mexico associated with the
recent increase in volcanic unrest at Colima may be related to this increase in stress to the north. Tonight, the long duration ULF
pulsations are just as vigorous as they were 24 hours ago. The infrasonic harmonic activity is ping ponging between the Gulf of California
and the Long Valley Caldera according to the frequency vs. latitudes being observed. Today, there were several key frequencies related to this
and centered from the Eastern Sierras to Central Mexico, with an emphasis towards the stronger harmonics being for Central Mexico
to Southern California, and with lower amplitude as they ascend towards the Mammoth Lakes to Mono Lake region.
13-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
13-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
14-MAR-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
13-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
14-MAR-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 14, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Monday.
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours and reached it's highest point since last January 14, 2005.
The ULF mean average slightly increased (positive).
All daily charts were updated to reflect the latest analysis.
M3.6 2005/03/14 20:23:07 UTC 34.423N 118.669W d:14.3 km ( 6 mi) WNW of Valencia, CA
A long period with detected pulsed ULF signal burst activity continued during Monday. The increase in ULF activity is apparently
related to a crustal stress change taking place along the Pacific and North American plate boundary in Southern California. Today's
small earthquake epicentered north of Los Angeles, appears to be related to it. Tonight, the long duration earth-induced sub-ionospheric
ULF pulsations are dissipating in intensity. The situation that appears to have taken place is another nucleation of deep crustal energy
out of the ECSZ and towards the Garlock Fault/Southern Owens Valley between the Lenwood and Blackwater faults where the new plate boundary
is in its early stages of formation. We can expect events of this nature from time to time as stress nucleates around the locked big bend
along the San Andreas fault zone.
14-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
14-MAR-2005 00:00 - 03:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 15, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was strong infrasonic resonant harmonic activity below 2 Hz on Tuesday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 0.97 Hz (-70.03 dBv).
Note: 1.0 Hz is inferred to be the infrasonic resonant frequency for the San Andreas fault in Southern California.
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average slightly decreased (negative).
All daily charts were updated to reflect the latest analysis.
Tonight, the long duration earth-induced sub-ionospheric ULF pulsations are once again active for a period.
It's related to crustal stress changes now taking place along the Pacific and North American plate boundary in Southern California.
The wrenched and compressed ECSZ/Mojave Desert block is nucleating stress northwest along it's active strik-slip faults towards the
Southern Owens Valley and the Garlock Fault zone, where a new plate boundary is in its early stages of development from east of
Barstow to Little Lake, CA. Secondary earthquakes will be quite active whenever there is observed nucleation of stress. The monitoring
effort is critical to forecasting whenever there is a threat of increased seismic activity in the Inland Empire, Los Angeles Basin,
Santa Barbara Channel, and the Mojave Desert Block. Further north, it affects the Eastern Sierras and usually dissipates in the region
near the Long Valley Caldera. Otherwise, it nucleates west along the Garlock fault zone towards Wheeler Ridge and the Central Coast of
California (San Simeon) via the Big Pine fault, which is inferred to be a continuation of the Garlock Fault on the Pacific side of the
plate boundary. Increasing stress along the long overdue San Jacinto fault tends to step over to the Elsinore fault where it usually
nucleates northwest towards the region between Yorba Linda and Val Verde, CA. This is going to be a repeating pattern that you will
become quite familiar with as the changes progress. It's a crustal stress pattern that I've studied and reported upon now for at least
the past five years.
15-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
15-MAR-2005 12:00 - 15:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
15-MAR-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
15-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 16, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was strong infrasonic resonant harmonic activity below 2 Hz on Wednesday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.56 Hz (-72.90 dBv).
Note: 1.4 Hz is inferred to be the infrasonic resonant frequency for the Long Valley Caldera in
the Eastern Sierras. The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average significantly decreased (negative).
All daily charts were updated to reflect the latest analysis.
M3.1 2005/03/16 02:26:45 UT 40.399N 126.565W d:10.0 km (120 mi) W of Petrolia, CA
Tonight, the long duration earth-induced sub-ionospheric ULF pulsations are once again quite active.
Locations with inferred ULF activity were spread out over both Southern and Central California.
A majority of the activity was associated with the Southern Owens Valley region and the Eastern Sierras.
Lesser levels of ULF activity were also observed coming from near Cabazon, Borrego Springs and Yucca Valley, CA.
16-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
16-MAR-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
16-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 17, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was moderate infrasonic resonant harmonic activity below 2 Hz on Thursday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.6 Hz (-73.54 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average significantly decreased (negative).
All daily charts were updated to reflect the latest analysis.
M3.8 2005/03/17 23:21:30 40.751 -124.476 22.9 23 km ( 14 mi) W of Humboldt Hill, CA
M4.7 2005/03/18 07:23:58 40.370 -124.984 16.2 59 km ( 37 mi) W of Petrolia, CA
Tonight, long duration earth-induced sub-ionospheric ULF pulsations are again extremely active.
For specific forecast information about Northern California see the link below.
11-MAR-2005: Forecast information about Northern California
17-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
17-MAR-2005 18:00 - 21:00 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
17-MAR-2005 21:00 - 23:59 UTC
ECSZ Mojave Desert Block: Infrasonic Spectrogram
MT ULF UPDATE: March 18, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Friday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.83 Hz (-76.63 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average slightly increased (positive).
All daily charts were updated to reflect the latest analysis.
Tonight, long duration (earth-induced) sub-ionospheric ULF pulsations are once again extremely active.
18-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 19, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Saturday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.77 Hz (-74.95 dBv).
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average increased (positive).
All daily charts were updated to reflect the latest analysis.
Tonight, long duration (earth-induced) sub-ionospheric ULF pulsations are again extremely active.
Increased ULF activity was observed from near Colton (San Jacinto Fault Zone), CA.
19-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 20, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Sunday.
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was lower during the past 24 hours. The ULF mean average was unchanged.
All daily charts were updated to reflect the latest analysis.
Tonight, long duration (earth-induced) sub-ionospheric ULF pulsations are again extremely active
and appear to be even more frequent when active (period in seconds is inverse of frequency in Hz: p=1/f).
Increased ULF activity was observed from near Lytle Creek, and Borrego Springs (San Jacinto Fault Zone), CA.
20-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 21, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Monday.
The ULF and MT activity level was moderate during the past 24 hours. The inferred mean average unclamping level
was lower during the past 24 hours. The ULF mean average was basically unchanged.
All daily charts were updated to reflect the latest analysis.
Tonight, long duration (earth-induced) sub-ionospheric ULF pulsations are again extremely active.
There is no change since the latest small earthquake epicentered near Borrego Springs, CA.
Currently watching for the nucleation of crustal stress out of the border region with Northern Baja, Mexico.
Increased ULF activity was observed from near Anza, and Borrego Springs (San Jacinto Fault Zone), CA.
Since ULF pulsations have not decreased in intensity, I believe that the Anza Seismic Gap (San Jacinto fault)
is at an extremely high crustal stress level, and it could next nucleate further north towards the Cajon Pass and the
Inland Empire region, or step over towards the Elsinore fault zone. So please stay on alert!
21-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 22, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Tuesday.
The ULF and MT activity level was moderate to high during the past 24 hours. The inferred mean average unclamping level
was lower during the past 24 hours. The ULF mean average decreased (negative).
All daily charts were updated to reflect the latest analysis.
M3.7 2005/03/22 08:55:05 UT 33.280N 116.260W d: 4.6 km ( 7 mi) ENE of Borrego Springs, CA
M3.4 2005/03/23 00:07:06 UT 33.882N 118.451W d:11.2 km ( 3 mi) W of Manhattan Beach, CA
The previously reported long duration (earth-induced) sub-ionospheric ULF pulsations have progressed to an erratic
mode along with high amplitude piezomagnetic bursts. The major change was observed shortly prior to the
Santa Monica Bay M3.4 earthquake. Tonight, there was a strong piezomagnetic burst which was associated with a
micro quake epicentered at Mount Saint Helens Volcano, WA. The step over of crustal stress out of the San
Jacinto fault zone (Anza/Borrego Springs, CA) may have also affected the offshore region west of Santa Monica, CA.
With these observed high level ULF signal bursts taking place in an even further erratic way, I think it would be best
to stay on alert for the next several days as we approach the Lunar-Tidal changes associated with the next Full Moon.
The most recent check for the MT reading was at a high 10.0 units of regional lithospheric stress, which is a full point
higher than it was at 7:00 PM PST. (03:00 UTC).
22-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 23, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Wednesday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.91 Hz (-75.71 dBv).
The ULF and MT activity level was moderate to high during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average increased (positive).
All daily charts were updated to reflect the latest analysis.
Several piezomagnetic bursts were detected during the past 24 hours. The strongest one (10.00 units) appeared to be associated
with a micro quake epicentered at Mount Saint Helens Volcano, WA. It's interesting to note that another strong piezomagnetic burst
appeared to be associated with a swarm of micro quakes epicentered in Hawaii. With the current changes now taking effect, I think
it would be best to stay on alert for the next several days as we approach the Lunar-Tidal changes associated with the next Full Moon.
The latst observation indicates that ULF pulsations have now ended, and I'm waiting to see if they return again.
23-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 24, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Thursday.
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average increased (positive).
All daily charts were updated to reflect the latest analysis.
I think it would be best to stay on alert for the next several days as the Lunar-Tidal changes
associated with the next Full Moon approach in time. However, it's been really quiet here since the end of
the long duration ULF pulsations.
The Full Moon and Associated
Spring Tides
Advisory is Now in Effect!
24-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 25, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Friday.
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was slightly higher during the past 24 hours. The ULF mean average was unchanged.
All daily charts were updated to reflect the latest analysis.
M3.6 2005/03/26 04:36:48 UT 35.838N 120.388W d:6.9 km ( 5 mi) SSE of Parkfield, CA
The latest offshore activity in Southern California appears to be related to the Full Moon Lunar-Tidal changes.
Also a small seismic swarm near Borrego Springs may be related to this gravity induced change in lithospheric stress
between 05:00 and 05:10 UTC, which was approximately 10 minutes after the predicted maximum high tide (4.82 ft.) at
Newport Beach, CA.
M1.7 2005/03/26 05:08:28 UT 33.287N 116.271W d:4.0 10 km ( 6 mi) ENE of Borrego Springs, CA
M1.9 2005/03/26 05:05:45 UT 33.285N 116.273W d:4.0 10 km ( 6 mi) ENE of Borrego Springs, CA
M1.9 2005/03/26 05:03:25 UT 33.282N 116.270W d:3.7 10 km ( 6 mi) ENE of Borrego Springs, CA
M1.8 2005/03/26 05:02:08 UT 33.531N 118.370W d:17.3 21 km ( 13 mi) N of Avalon, CA
The small earthquake (M3.6) near Parkfield, CA also appears to be Lunar-tidal related. With a timing of approximately
90 minutes prior to the predicted highest tide (4.88 ft.) along the Central California coast at San Simeon.
The Full Moon and Associated
Spring Tides
Advisory is Now in Effect!
25-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 26, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no infrasonic resonant harmonic activity below 2 Hz on Saturday.
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was unchanged during the past 24 hours. The ULF mean average was decreased (negative).
All daily charts were updated to reflect the latest analysis.
The Full Moon and Associated
Spring Tides
Advisory is Now in Effect!
26-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 27, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was no significant infrasonic resonant harmonic activity below 2 Hz on Sunday.
The ULF and MT activity level was low during the past 24 hours. The inferred mean average unclamping level
was slightly lower during the past 24 hours. The ULF mean average was decreased (negative).
All daily charts were updated to reflect the latest analysis.
ULF activity was observed coming from Borrego Springs and near Yucaipa, CA.
However, the activity continues at an extremely low level compared to recent past.
Local Infrasonic resonant activity also is at a low level. THe ULF mean average is in a steady state of fluctuation
and hasn't broken out to either higher or lower point in the past week. MT activity also is staying mostly
in a range from 8.5 to 8.7 Units of regional lithospheric stress. Today I completed an analysis for the March 23, 2005
Piezomagnetic Burst
, which was detected from here in Southern California.
27-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
MT ULF UPDATE: March 28, 2005
Note: The San Jacinto Fault Alert along with Inland Empire advisory continues to stay in effect.
There was infrasonic resonant harmonic activity below 2 Hz on Monday.
The Peak (Crustal) Infrasonic Resonant Harmonic Frequency was measured at 1.84 Hz (-75.42 dBv).
The ULF and MT activity level was low to moderate during the past 24 hours. The inferred mean average unclamping level
was lower during the past 24 hours. The ULF mean average was relatively unchanged.
All daily charts were updated to reflect the latest analysis.
Todays' important global seismic event was yet another great earthquake in the Sumatra Indonesia region,
which was caused by a nucleation of stress from the Decmber 26, 2004 Mw9.2 earthquake. A small MT precursor was detected
about 20 minutes prior to the main shock. A report should be ready within the next week. Otherwise the North American and
Pacific Plate ULF activity was lackluster during the past 24 hours. No unclamping incidents were detected prior to the
latest great earthquake. It was not unexpected that another strong earthquake would occur in the region already devastated.
Maga Thrust Earthquakes usually occur in clusters(as pointed out in my recent interview on Dreamland), and related to the
later stages of the current Solar cycle.
28-MAR-2005: 24 Hour Geomagnetic and Magneto-Telluric Graph
Top of Current Page
NORTH AMERICAN VOLCANIC UNREST and ERUPTION UPDATES
Observatorio Vulcanológico Colima-Mexico
Latest Colima Volcano Update
CENEPRED-Mexico
Latest Popocatépetl Volcano Update
AVO-Alaska
Alaska Volcano Observatory
Aleutian Islands
Latest Korovin Volcano Update
Cook Inlet:
Latest Mount Spurr Update
Alaska Peninsula:
Latest Mount Veniaminof Update
CVO-Pacific Northwest:
Cascades Volcano Observatory
Cascades:
Latest Mount Saint Helens Update
LUNAR-TIDAL AND SOLAR PERIODICITIES RELATED TO EARTHQUAKES
(Tidal)Triggering Factor of Strong Earthquakes and Its Prediction Verification
Tidal Triggering: Caught in the Act
Monthly Lunar-Tidal Calendar
San Simeon:
The next New Moon and resulting Spring Tides will be on March 10, 2005 (09:13 UTC); with a
predicted differential of 7.3 feet, and a significant lunar-tidal phase
angle(transition) between 17:06 UTC (03/09/2005) and 23:48 UTC (03/09/2005) along
the coast of Central California.
The next Full Moon and resulting Spring Tides will be on
March 25, 2005 (21:01 UTC); with a predicted differential of 4.69 feet, and a signficant
lunar-tidal phase angle (transition) between 17:40 UTC (03/25/2005) and 23:53 UTC (03/25/2005)
along the coast of Central California.
Newport Beach:
The next New Moon and resulting
Spring Tides will be on March 10, 2005 (09:13 UTC) ; with a predicted differential of 7.22 feet,
with a significant lunar-tidal phase angle(transition) between 16:01 UTC (03/09/2005) and 22:50 UTC (03/09/2005) along
the coast of Southern California.
The next Full Moon and resulting Spring Tides will be on March 25, 2005
(21:01 UTC); with a predicted differential of 4.64 feet, and a significant lunar-tidal phase angle (transition)
between 16:35 UTC (03/25/2005) and 22:55 UTC (03/25/2005) along the coast of Southern California.
San Simeon, California
9 March 2005 - 10 March 2005
35.6417° N, 121.1883° W
2005-03-09 02:06 UTC Sunset
2005-03-09 05:33 UTC 4.60 feet High Tide
2005-03-09 11:02 UTC 0.82 feet Low Tide
2005-03-09 14:23 UTC Sunrise
2005-03-09 17:06 UTC 6.14 feet High Tide
2005-03-09 23:48 UTC -1.16 feet Low Tide
2005-03-10 02:07 UTC Sunset
2005-03-10 06:02 UTC 4.92 feet High Tide
2005-03-10 09:13 UTC New Moon
2005-03-10 11:47 UTC 0.40 feet Low Tide
2005-03-10 14:22 UTC Sunrise
2005-03-10 17:50 UTC 5.86 feet High Tide
2005-03-11 00:20 UTC -0.77 feet Low Tide
Balboa Pier, Newport Beach, California
9 March 2005 - 10 March 2005
33.6000° N, 117.9000° W
2005-03-09 01:54 UTC Sunset
2005-03-09 04:28 UTC 4.55 feet High Tide
2005-03-09 10:04 UTC 0.81 feet Low Tide
2005-03-09 14:09 UTC Sunrise
2005-03-09 16:01 UTC 6.07 feet High Tide
2005-03-09 22:50 UTC -1.15 feet Low Tide
2005-03-10 01:54 UTC Sunset
2005-03-10 04:57 UTC 4.87 feet High Tide
2005-03-10 09:13 UTC New Moon
2005-03-10 10:49 UTC 0.39 feet Low Tide
2005-03-10 14:08 UTC Sunrise
2005-03-10 16:45 UTC 5.80 feet High Tide
2005-03-10 23:22 UTC -0.77 feet Low Tide
2005-03-11 01:55 UTC Sunset
San Simeon, California
25 March 2005 - 26 March 2005
35.6417° N, 121.1883° W
2005-03-25 02:20 UTC Sunset
2005-03-25 05:42 UTC 4.64 feet High Tide
2005-03-25 11:40 UTC 0.57 feet Low Tide
2005-03-25 14:00 UTC Sunrise
2005-03-25 17:40 UTC 4.85 feet High Tide
2005-03-25 21:01 UTC Full Moon
2005-03-25 23:53 UTC 0.16 feet Low Tide
2005-03-26 02:20 UTC Sunset
2005-03-26 06:02 UTC 4.88 feet High Tide
2005-03-26 12:14 UTC 0.28 feet Low Tide
2005-03-26 13:59 UTC Sunrise
2005-03-26 18:15 UTC 4.57 feet High Tide
2005-03-27 00:15 UTC 0.49 feet Low Tide
Balboa Pier, Newport Beach, California
25 March 2005 - 26 March 2005
33.6000° N, 117.9000° W
2005-03-25 02:06 UTC Sunset
2005-03-25 04:37 UTC 4.59 feet High Tide
2005-03-25 10:42 UTC 0.56 feet Low Tide
2005-03-25 13:48 UTC Sunrise
2005-03-25 16:35 UTC 4.80 feet High Tide
2005-03-25 21:01 UTC Full Moon
2005-03-25 22:55 UTC 0.16 feet Low Tide
2005-03-26 02:07 UTC Sunset
2005-03-26 04:57 UTC 4.82 feet High Tide
2005-03-26 11:16 UTC 0.28 feet Low Tide
2005-03-26 13:46 UTC Sunrise
2005-03-26 17:10 UTC 4.53 feet High Tide
2005-03-26 23:17 UTC 0.48 feet Low Tide
2005-03-27 02:07 UTC Sunset
NOAA: Near-Real Time Data
NOAA Tides for California Coastal Regions
Space Weather Alerts and Warnings Timeline
Regarding Donations for GeoSeismic Labs
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One item that needs emphasis is the annual operating cost related to being a public corporation within
the state of California; a fee which is 800 Dollars, and paid for the privilege of being a public entity.
Last fiscal year, I directly paid to the State Secretary approximately 2 Thousand Dollars in Franchise Tax
Fees to keep the lab solvent and fully chartered within the State of California. Your donations will basically
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Thank you,
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MT ULF Charts and Experimental Forecast
The Latest Near Real-Time Data from GeoSeismic Labs
The Southern California Seismic Alert
The most recent 24 hr. MT peak reading (28-MAR-2005 03:00 UTC) was
measured at 8.6 units of regional lithospheric stress.
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Since 2001.
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