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Earthquakes


Seismograph

Very deep M6.3 earthquake hits Primor'ye, Russia

Russia earthquake map
© Volcano Discovery
A very deep magnitude 6.0 earthquake was reported in the morning near Sovetskaya Gavan', Russia.

According to the German Research Centre for Geosciences (GFZ), the quake hit on Tuesday 1 December 2020 at 7.54 am local time at a great depth of 585 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms.

The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.

Our monitoring service identified a second report from the United States Geological Survey (USGS) which listed the quake at magnitude 6.4. Other agencies reporting the same quake include Geoscience Australia (GeoAu) at magnitude 6.4, Italy's National Institute of Geophysics and Volcanology (INGV) at magnitude 6.3, and European-Mediterranean Seismological Centre (EMSC) at magnitude 6.0.

Comment: On Nov. 29th at 1311UT Earth-orbiting satellites detected the biggest solar flare in more than 3 years.

Apart from this very deep Russian earthquake, other seismic and volcanic activity around this time include:


Seismograph

M3.7 earthquake hits Burladingen, Germany

earthquake graph
© Phil McCarten / Reuters
There was a light but noticeable earthquake in the Swabian Alb early Tuesday morning, December 1st, 2020.

Epicenter near Burladingen

The center of the quake with a magnitude of 3.7 was west of Burladingen in the Zollernalb district , as reported by the Southwest earthquake service . The tremors at 0.25 a.m. were believed to have been felt within a radius of 30 kilometers.

No major damage or injuries

The situation center of the Ministry of the Interior in Baden-Württemberg reported several worried calls from the region. A crack in a street was also reported. According to initial findings, there was no major damage or even injuries. There are always minor tremors in the area. The Swiss earthquake service THZ Zurich even reported a strength of 4.1.

At 02:59 local time, the earthquake service reported a weaker earthquake near Albstadt with a strength of 1.8.

Seismograph

Shallow 5.9 magnitude earthquake shakes the northern Argentine province of Salta

quake
A earthquake of magnitude 5.9 on the Richter scale shook the province this Sunday Argentina from Jump, in the northwest of the country, without causing damage or victims.

The National Institute of Seismic Prevention of Argentina specified in a report that the earthquake was registered today at 1:40 p.m. local time (16:40 GMT), with its epicenter at Jump, 177 kilometers north of the provincial capital, 106 kilometers north of San Salvador De Jujuy and 34 kilometers east of Humahuaca, at a depth of 17 kilometers.


Seismograph

Very shallow magnitude 3.1 quake hits 40 km south of Tarbes, France

3.1 quake 28 Nov 11:10 am (GMT +1)

3.1 quake 28 Nov 11:10 am (GMT +1)
Just 14 minutes ago, a 3.1-magnitude earthquake struck near Sers, France. The tremor was recorded in the morning on Saturday 28 November 2020 at 11.10 am local time, at a very shallow depth of 2 km below the surface.

The event was filed by the European-Mediterranean Seismological Centre (EMSC), the first seismological agency to report it.

Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.

Weak shaking might have been felt in Sers (pop. 100) located 10 km from the epicenter, Sers (pop. 100) 10 km away, Betpouey (pop. 100) 10 km away, Aragnouet (pop. 300) 11 km away, and Viella (pop. 100) 12 km away.

Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Bagnères-de-Bigorre (pop. 9,000) located 21 km from the epicenter, Lourdes (pop. 15,800) 29 km away, and Tarbes (pop. 52,100) 40 km away.

Seismograph

6.1 magnitude earthquake jolts Balleny Islands region, Southern Ocean

earthquake graph
© Phil McCarten / Reuters
An earthquake with a magnitude of 6.1 jolted Balleny Islands region in the Antarctic Ocean at 2256 GMT on Wednesday, the U.S. Geological Survey said.

The epicenter, with a depth of 10.0 km, was initially determined to be at 61.9292 degrees south latitude and 154.8222 degrees east longitude.

The Balleny Islands are a series of uninhabited islands heavily glaciated and of volcanic origin.

Seismograph

6.2 magnitude earthquake hits off Chile coast - USGS

chile quake map
© USGS
A 6.2-magnitude earthquake rocked the Chilean coast, the US Geological Survey has reported. It struck at a depth of 20 kilometers (12 miles).

The jolt occurred late Saturday 157.4 km (97.8 miles) to the southeast of Talca, a city of around 200,000 people south of the capital, Santiago.

There has been no tsunami alert issued as a result of the quake.

Around 10 million people might have felt the quake, according to the European-Mediterranean Seismological Centre.

However, it is not expected to cause casualties or major material damage.

Seismograph

Russian Antarctic station rattled by shallow M6.0 earthquake

Russian Bellingshausen station
© Lotus Communications/TASS
Russian Bellingshausen station
The Russian polar station Bellingshausen in the Antarctic is registering tremors with a magnitude of up to 6.0, the Arctic and Antarctic Research Institute, the country's sole operator of Antarctic research, reported on Thursday.

"At the Bellingshausen station... tremors with a magnitude of 4.7 - 6.0, with their epicenter located at a distance of 40-50 km southeast of the station in the Bransfield Strait at depths in the earth's crust from 1.5 to 10 km," the Institute's press office said in a statement.

The Russian polar stations in the Antarctic are now carrying out preparatory work under the program of the 66th Russian Antarctic expedition. In particular, the Vostok station has completed the work to prepare the runway 3,700 meters long. The Progress and Mirny stations have also finished the work to put runways into operation. The Novolazarevskaya station is carrying out emergency work to clean and restore the runway after a recent blizzard. The first flight of an Il-76 plane from Cape Town is scheduled for November 19.

Seismograph

Magnitude 6.3 earthquake jolts Indonesia

earthquake reading
A 6.3-magnitude earthquake rattled Indonesia's West Sumatra province Tuesday, according to the country's Meteorological, Climatological and Geophysical Agency (BMKG).

The agency said the earthquake's epicenter was 109 kilometers (67 miles) southwest of the town of Tuapejat in the Mentawai Islands off the province's coast.

The natural disaster occurred 10 kilometers (6.2 miles) below the surface.

Although no initial deaths were reported, a tsunami alert was issued.

*Writing by Ali Murat

Info

East African Rift system is slowly breaking away

East African Rift System.
© Figure created by D.S. Stamps.
Final model for the East African Rift System. Hashed lines indicate newly discovered broad deforming zone. Arrows represent predicted tectonic plate motions. ABFZ—Andrew Bain Fracture Zone; IFZ—Indomed Fracture Zone; RSZ—Ranotsara shear zone.
The African continent is slowly separating into several large and small tectonic blocks along the diverging East African Rift System, continuing to Madagascar - the long island just off the coast of Southeast Africa - that itself will also break apart into smaller islands.

These developments will redefine Africa and the Indian Ocean. The finding comes in a new study by D. Sarah Stamps of the Department of Geosciences for the journal Geology. The breakup is a continuation of the shattering of the supercontinent Pangea some 200 million years ago.

Rest assured, though, this isn't happening anytime soon.

"The rate of present-day break-up is millimeters per year, so it will be millions of years before new oceans start to form," said Stamps, an assistant professor in the Virginia Tech College of Science. "The rate of extension is fastest in the north, so we'll see new oceans forming there first."

Seismograph

Magnitude 6.1 earthquake hits Mindanao, Philippines

Philippines quake map
© USGS
The offshore quake hit at a depth of 33km south-east of the town of San Agustin, Surigao Del Sur.
An earthquake of magnitude 6.1 struck Mindanao in the Philippines, the European Mediterranean Seismological Centre (EMSC) said on Monday (Nov 16).

The quake was at a depth of 15km, it added.

The earthquake, which is tectonic in origin, will trigger aftershocks, the Philippine Institute of Seismology and Volcanology (Phivolcs) said. Damage is expected.