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Fri, 14 Aug 2020
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Earthquakes

Seismograph

With more than 100,000 small to medium aftershocks in Southern California since July experts are wondering when not if the BIG ONE will come

Graph
On the 4th of July 2019, Independence day, a magnitude 6.4 quake rocked Surles Valley, in Southern California, two days later a much more powerfull magnitude 7.1 struck the Ridgecrest area just a few miles away from the Surles Valley quake. Since then, more than 100,000 small to medium aftershocks, known as "swarmageddon," have hit the same area, including a mag 5.5, a mag 5.4 and a mag 5.0, which begs the question when not if will Southern California receive THE BIG ONE?

Since 2015, the Pacific Ring of Fire has been rattled by nearly 600 major quakes, (mag 6 or higher), see map here. Incredibly the Californian Coast has recorded just 3 major quakes in the same period and Oregon 2. The odds of this happening must be very high and surely the West Coast has to be long overdue for the big, it has to be!

To some, the "swarmageddon" 40 miles east of downtown Los Angeles has brought fear that a bigger threat was coming. To others, as long as they don't feel a shake, it is easy to just put it out of their minds. California has small quakes all the time — a magnitude 3 every other day, on average, according to the LA Times. But not all of them act the same, and some bring more danger than others. As officials install more seismic sensors as part of the state's early warning system, experts are getting an increasingly better look at California's smaller earthquakes. According to The Daily Mail, It's reminiscent of activity near the San Andreas Fault three years ago that had some scientists on edge for a possible large triggered earthquake.

Comment: Also of relevance: USGS seismic data points to 2,000% increase in major earthquakes since 1900


Seismograph

Shallow 6.3 earthquake rumbles in the Aleutian Islands, Alaska

A magnitude 6.3 earthquake southeast of Adak rumbled the western Aleutian Islands at 3:54 p.m. Saturday, Nov. 23, 2019.
© Alaska Earthquake Center
A magnitude 6.3 earthquake southeast of Adak rumbled the western Aleutian Islands at 3:54 p.m. Saturday, Nov. 23, 2019.

An earthquake with a reviewed magnitude of 6.3 rumbled in the Aleutian Islands on Saturday afternoon, according to the Alaska Earthquake Center.

The earthquake at 3:54 p.m. was centered 59 miles southeast of Adak at a depth of 16.1 miles, the center reported. Several aftershocks -- the strongest registering at magnitude 3.6 -- were recorded in the region.

Shaking was felt in Adak, according to citizen reports.

A tsunami was not expected, according to the National Tsunami Warning Center.

Comment: 12 hours earlier: Shallow 6.1 magnitude quake rocks off eastern Indonesia, no tsunami alert issued


Seismograph

Shallow 6.1 magnitude quake rocks off eastern Indonesia, no tsunami alert issued

quake map
A shallow and strong earthquake measuring 6.1 magnitude struck off eastern Indonesia's West Papua province on Saturday evening, but no tsunami alert was issued, the meteorology and geophysics agency said.

The quake jolted at 7:11 p.m. Jakarta time (1211 GMT) with the epicenter at 280 km northeast Tambrauw of the province and a depth of 10 km under sea bed, official in charge at the agency Abdul Rosid said.

"There (is) no potential of tsunami from happening so that we did not issue a warning," he told Xinhua over phone.

Indonesia is prone to quake for its position on the quake-impacted zone so-called "the Pacific Ring of Fire."

Bizarro Earth

How is a massive "blob" of rock causing earthquakes in Central Asia?

Hindu Kush
Far beneath the Hindu Kush mountains of Central Asia, a giant blob of continental rock is slowly dripping away from the lithosphere into the mantle below. A recent study attributed many of the deepest earthquakes in the region to the movements of this blob.

The Hindu Kush runs for hundreds of miles and straddles the border of Afghanistan and Pakistan. It is one of the most seismically active areas in the world.

Every year, the mountain range gets rocked by more than 100 earthquakes that measure a magnitude of 4.0 or higher. It also experiences many intermediate-depth quakes that happen between 45 to 190 miles (70 to 300 kilometers) below the surface.

Until recently, experts didn't know why the Hindu Kush suffers so many earthquakes at intermediate depths. The mountain range doesn't sit on top of a significant fault line, which any California resident knows causes numerous earthquakes.

Further, the mountains are some distance away from the ongoing collision between the Eurasian and Indian tectonic plates. Therefore, the usual candidates for the cause behind constant earthquakes are absent from the area. (Related: Fracking-induced earthquakes in Central and Eastern America are on the rise, caution researchers.)

Comment: There are other important factors to consider when studying tectonic plate movements, to increase our understanding of the subsequent seismic and volcanic activity, and also the formation of sinkholes (all of which are increasing at an alarming rate!), such as:

1. The slowdown of the Earth's rotation - causing mechanical stress on the crust.
2. Crustal slippage - the difference in rotation between the crust and mantle.
3. Reduction of the surface/core electric field.
4. Electromagnetism.

These factors, the Electric Universe theory, and much more are fully explained in Earth Changes and the Human-Cosmic Connection.


Seismograph

M6.1 earthquake shakes Laos - Thailand border region

Quake on Thai-Lao border
© Google Earth
The red dot shows the location where an earthquake shook the Thai-Lao border.
A strong earthquake shook a border area between northern Thailand and northwestern Laos on Thursday morning, swaying Bangkok high-rises.

Residents in Chiang Mai province felt a long period of shaking but saw no major damage. High-rise buildings swayed slowly for at least half a minute in Bangkok, startling residents.

The US Geological Survey said the 6.1 magnitude quake on Thursday morning was about 10 kilometers below the surface.

It was centered in northwestern Laos, about 31 kilometers from Chaloem Phrakiat district in Nan province.

Moderate quakes of 4.6 and 5.7 magnitude shook the same area overnight.

Seismograph

Deep magnitude 6.3 earthquake hits the Sea of Okhotsk, Russia

Russia earthquake
© Google, TW/SAM
A 6.3-magnitude earthquake jolted 267km NW of Ozernovskiy, Russia at 0826 GMT on Wednesday, the U.S. Geological Survey said.

The epicenter, with a depth of 486.81 km, was initially determined to be at 53.1633 degrees north latitude and 153.6852 degrees east longitude.

Comment: A few hours earlier a shallow earthquake of magnitude 6.3 struck off Mexico's Chiapas.


Seismograph

Shallow earthquake of magnitude 6.3 strikes off Mexico's Chiapas

QUAKE MAP
An earthquake of magnitude 6.3 struck off Mexico's southern state of Chiapas on Tuesday, the United States Geological Survey said.

There were no immediate reports of casualties or damage in the earthquake, which the agency said hit at a depth of 26 km (16 miles), and a distance of about 120 km (75 miles) west of the state's Suchiate region.

Earlier, the European-Mediterranean Seismological Centre monitoring agency had put the quake magnitude at 6.2.

Seismograph

France's earthquake caused unusual crack in Earth's crust, puzzling scientists

Rouviere
© Jeff Pachoud, AFP via Getty Images
A 4.8 magnitude earthquake struck southeast France on November 11, damaging buildings and injuring four people. The small town of Le Teil suffered some of the worse damage, with hundreds of structures cracked and crumbling, such as the one pictured here in the town's Rouviere quarter.
A smidgen before noon, Clément Bastie and his family were preparing dinner in the small French town of Le Teil when the walls began to tremble. Glasses and plates crashed to the ground. Then a booming sound reverberated through the town.

Fears of explosions at the nearby nuclear energy plant flooded into his mind. Bastie, a high school biology and geology teacher, rushed outside expecting to see the bloom of a mushroom cloud. But as he soon discovered, the shaking came from something less devastating but still surprising for the region: an earthquake that cracked through the ground.

Clocking in at 4.8 magnitude, the temblor damaged numerous buildings and injured four people. It also left scientists buzzing over a number of curious features. For one, while France is no stranger to temblors, they are often quite small, explains seismologist Jean-Paul Ampuero of the Université Côte d'Azur in France. Monday's event was only of moderate intensity by global measures, but it was a "very large one for French standards," he says.

Comment: Just today another quake was recorded, although not in the same region, at M3.7 4 km W of Le Puy-Notre-Dame at 09:04 local time:

earthquake france m3.7
Everything is changing: the composition of the atmosphere; the electric charge differential between atmosphere, ground and sub-surface layers; the core itself is heating up if one theory for 'El Nino' is correct; even the Sun is behaving differently... there's gonna be a whole lotta strange in the next few years!

See also: And check out SOTT radio's: As well as SOTT's monthly documentary tracking these events: SOTT Earth Changes Summary - October 2019: Extreme Weather, Planetary Upheaval, Meteor Fireballs




Bizarro Earth

7.1 magnitude earthquake hits near Indonesia

Indonesia Earthquake
© USGS / Earthquake.usgs.gov
An earthquake of 7.1 magnitude struck in the Molucca Sea, some 134km northwest of the Indonesian island of Ternate, at 4:18pm local time on Thursday.

A tsunami threat message was issued by the Pacific Tsunami Warning Center (PTWC) for all coasts within 300km of the epicenter, affecting a number of Indonesian islands within the hour. Residents were advised to remain alert and seek instructions from local authorities.

Attention

Earthquake swarm raises concerns for big volcanic eruption in Iceland

Iceland earthquake swarm
© Icelandic Met Office.
Earthquakes reported between November 11 and 12. The cluster of red dots corresponds to the Askja swarm.
One of the most active volcanic areas in the world is rumbling again.

Sitting atop the spreading Mid-Atlantic Ridge and one of the planet's hotspots, Iceland is famous for its seismic activity. There are about 130 volcanoes on the island and 30 active volcanic systems.

While volcanic behaviour is difficult to predict, researchers do look for certain seismic signs that indicate an eruption might be imminent. Over the past week, one of Iceland's volcanoes has been attracting attention. On November 6th, an earthquake swarm began at the Askja volcano, located on the eastern part of the island. Since then, roughly 700 earthquakes have been reported at the site, the largest of which was Magnitude 3.4.

Icelandic officials continue to monitor the volcano's activity, although, at the moment, they say the swarm is more likely due to the movement of the continental ridge rather than tremors involving the volcano itself, adding that swarms "occur regularly" around Askja.