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Wed, 25 Nov 2020
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Earthquakes

Seismograph

Earthquake of magnitude 6.3 strikes near Mindanao, Philippines - 4th such strong quake within 24 hours globally

quake
An earthquake of magnitude 6.3 struck 82km east-northeast of General Santos in Mindanao, the Philippines, the US Geological Survey (USGS) said on Sunday (Sept 6).

The quake had a depth of 120.9 km, according to the USGS.

The Philippine Institute of Seismology and Volcanology (Phivolcs) said the offshore quake hit at a depth of 143 km, about 26km southeast of Don Marcelino town at 11.23pm local time.

Comment: This is the fourth magnitude 6+ quake registered within 24 hours across the planet - the other 3 being:


Seismograph

Strong mag. 6.6 earthquake near central mid- Atlantic Ridge

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Most important Earthquake Data:

Magnitude : 6.6

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2020-09-06 06:51:18

Depth (Hypocenter) : 10 km

Seismograph

Pacific 6.2M earthquake strikes off Vanuatu

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A 6.2 magnitude earthquake has struck off the Pacific island nation of Vanuatu.

The US Geological Survey reports that the quake struck at 2.59pm NZ time, 101 km north-west of the capital, Port Vila.

The Pacific Tsunami Warning Centre advises that the threat of tsunami waves has now mostly passed.

The USGS says the quake was fairly shallow - at a depth of about 10km, and that no damage has been reported so far.

Seismograph

6.2-magnitude earthquake strikes Coquimbo, Chile, EMSC says

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According to seismologists, the earthquake occurred at a depth of 25 kilometres (15.5 miles). No casualties or damage have been reported.

A 6.2-magnitude earthquake has struck 50 kilometres (31.07 miles) from Coquimbo, Chile, the European Mediterranean Seismological Centre (EMSC) said. No tsunami alert has been issued.

The US Geological Survey (USGS) preliminarily reported a 6.4-magnitude earthquake 47 kilometres northeast of Coquimbo.

A local resident has shared a video purportedly depicting the objects in his home trembling the moment the quake began.

Bizarro Earth

Magnitude 6.5 earthquake strikes northern coast of Chile - 3rd strong quake in 24 hours

Chile Earthquake
© U.S. Geological Survey
The quake was followed by more than a dozen aftershocks -- including one with a magnitude of 6.1.

A magnitude 6.5 earthquake struck near the coast of Northern Chile on Tuesday, the GFZ German Research Centre for Geosciences said, with local news media reporting some damage and minor landslides in areas near the epicenter.

Chile's interior ministry said in a statement that mining companies operating in the area had not reported any issues in the 2-1/2 hours since the initial quake. GFZ has reported several aftershocks of magnitudes between 5.5 and 6.2.

Chile is the world's largest copper producer and most of its large operations are in Antofagasta region, more than 300 km (180 miles) north of the quake's epicenter.

Miner Antofagasta Plc told Reuters that its operations at Los Pelambres, the closest large deposit to the epicenter, some 379 km (236 miles) in a straight line, had not been affected.

Patricio Elgueta, a union chief at state miner Codelco's El Salvador mine 200 km (120 miles) north, said operations continued as normal.

Mine facilities and other infrastructure in Chile are built to withstand large quakes.

The interior ministry's National Emergency Office said there had been some localized power outages and landslides blocking roads.

Comment: Also within the same 24 hours: Magnitude 6.8 earthquake strikes off the coast of Chile - shortly followed by a magnitude 6.3


Seismograph

Magnitude 6.8 earthquake strikes off the coast of Chile - shortly followed by a magnitude 6.3

MAP QUAKE
The U.S. Geological Survey says a strong earthquake with a preliminary magnitude of 6.8 has struck off the coast of northern Chile

A strong earthquake with a preliminary magnitude of 6.8 struck off the coast of northern Chile in the first minutes of Tuesday, the U.S. Geological Survey said.

There were no immediate reports of casualties or damage and the Chilean navy said there was no possibility of a tsunami.

The quake occurred at 12:09 a.m. local time at a depth of 35 kilometers (22 miles). It was centered 78 kilometers (48 miles) northeast of the Atacama city of Vallenar. A few minutes later, a second quake occurred with a preliminary magnitude of 6.3.

Seismograph

Shallow 6.2-magnitude earthquake hits Chagos Archipelago region of the Indian Ocean

quake
An earthquake with a magnitude of 6.2 jolted Chagos Archipelago region at 17:24:04 GMT on Monday, the U.S. Geological Survey said.

The epicenter, with a depth of 10 km, was initially determined to be at 4.0692 degrees south latitude and 70.2513 degrees east longitude.

Xinhua

Seismograph

Shallow M6.5 earthquake strikes Central Mid Atlantic Ridge

mid Atlantic ridge quake
Date & time: Sunday, 30 August 2020 21:20 UTC
Magnitude: 6.5
Depth: 10.0 km
Epicenter latitude / longitude: 0.76°N / 29.9°W (international territory)
Primary data source: GFZ
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!)

Seismograph

Do mystery odors in Japan predict an upcoming earthquake?

Image of Tokyo and Yokohama, Japan, after the September 1, 1923 earthquake
© USGS/George A. Lang Collection
Image of Tokyo and Yokohama, Japan, after the September 1, 1923 earthquake.
Kanagawa Prefecture, site of Japan's second largest city, Yokohama, and home to 9.2 million people has recently seen numerous reports of unexplained strange smells permeating the air in a coastal region sitting above the epicenter of the devastating 1923 Great Kanto Earthquake.

And worryingly, at least one prominent seismologist indicates this could be a precursor of another earthquake.

Most recently reported early Friday, the gas-like smell was reported to the local Yokosuka Fire Department multiple times over the course of an hour, although nobody was eventually taken sick because of the smell.

Just a month earlier, on July 17th the same thing happened with calls from the across the Miura peninsula to authorities complaining about the exact same thing, and six weeks prior to that the same again.

Yet no known cause has been detected.

However, Japanese seismologist Manabu Takahashi from Ritsumeikan University now fears that the smells could predate a quake in the area; something he has long studied according to reports from Japan.

The site the smells have been detected at sit near the meeting point of the Nankai, Sagami, and Suruga trough fault lines and too close to comfort to the 1923 quake epicenter that left around 140,000 dead across the wider Kanagawa and Kanto plains.

Seismograph

M6.1 earthquake hits New Britain Region, Papua New Guinea

PNG earthquake map

Date & time: Tuesday, 25 August 2020 19:08 UTC
Magnitude: 6.1
Depth: 34.0 km
Epicenter latitude / longitude: 5.49°S / 151.81°E (Papua New Guinea)
Nearest volcano: Bamus (66 km)
Primary data source: GFZ
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!)