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Tue, 20 Apr 2021
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Earthquakes

Seismograph

Huge 6.6 magnitude earthquake strikes just off Kermadec Islands

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AN earthquake measuring 6.6 in magnitude has been recorded north-east of New Zealand, within the so-called Ring of Fire, the USGS has reported.

The tremor is the latest in a a series of 34 in the region in the last day, the USGS has said. It struck at a depth of 6.2 miles. There is currently no tsunami alert in force - but a series of quakes did trigger one earlier this month.

Seismic activity is commonplace in the region, located within the so-called Ring of Fire which stretches around the Pacific Basin.

On Monday, the American Geophysical Union tweeted: "An M8.1 #earthquake off the coast of #NewZealand triggered an estimated 300 #landslides on #RaoulIsland, the largest of the #Kermadec Islands.

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Attention

Taal Volcano, Philippines records more earthquakes, gas emissions

Taal Volcano (taken October 26, 2020).
© Mike Frialde/INQUIRER.net
Taal Volcano (taken October 26, 2020).
TAAL Volcano registered more earthquakes and emitted more gas over the past 24 hours, signs of a looming eruption, the state-run Philippine Institute for Volcanology and Seismology (Phivolcs) said on Wednesday.

Based on the Taal Volcano Network (TVN), 212 quakes, including 168 tremors with durations one to 20 minutes, and 44 low frequency volcanic earthquakes were recorded.

Some 1, 229 tons of sulfur dioxide were emitted by the volcano in Batangas province in the past 24 hours, according to Phivolcs chief Renato Solidum.

Solidum said with the volcano under Alert Level 2, an increased unrest may lead to an eruption and advised "all concerned to remain vigilant".

"The fact that we have volcanic tremors and prolonged background tremor recorded, higher than normal sulfur dioxide emission rate of 923 tons per day, slow but steady inflation of the volcano still indicates magmatic activity at shallow depth beneath the volcano," he said.

Seismograph

Shallow 5.4 magnitude earthquake in China's Xinjiang kills 3

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A 5.4 magnitude earthquake in Xinjiang Uygur Autonomous Region in northwestern China claimed the lives of three people, media reported on Wednesday.

The tremor occurred on Tuesday at 9:14 p.m. local time (0:14 GMT) about 100 kilometers (62 miles) away from Aksu county. The epicenter of the earthquake lay at a depth of 10 kilometers.

Seismologists recorded 10 repeated aftershocks, the strongest of them had a magnitude of 3.4.

As of Wednesday, three deaths have been registered as a result of the tremor. A total of 65 houses were also reported damaged or destroyed by the earthquake, 16 of which collapsed along with the roof.


Seismograph

Shallow 3.5 earthquake hits northwest France

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An earthquake of magnitude 3.5 occurred in the morning on Saturday 20 March 2021 at 10:22 am local time near Rennes, Ille-et-Vilaine, Bretagne, France, as reported by France's Réseau National de Surveillance Sismique (RéNaSS).

According to preliminary data, the quake was located at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.

Seismograph

6.1-magnitude quake hits west of Macquarie Island

Earthquake
© Associated Press
An earthquake with a magnitude of 6.1 jolted west of Macquarie Island at 05:19:31 GMT on Saturday, the U.S. Geological Survey said.

The epicenter, with a depth of 10.0 km, was initially determined to be at 59.6207 degrees south latitude and 150.3136 degrees east longitude.

Seismograph

Magnitude 7.2 earthquake rocks northeastern Japan

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A strong magnitude 7.2 earthquake struck off the coast of northeastern Japan at a depth of 60 km on Saturday evening at 6:09 p.m.

In Miyagi Prefecture, where at least one person was injured, the quake measured up to a strong 5 on the Japanese seismic intensity scale to 7.

Tsunami waves of up to 1 meter may have reached the Miyagi Prefecture coast shortly after 6:30 p.m., according to NHK. All tsunami warnings were lifted by 7:30 p.m.

Due to the tsunami advisory, the town of Watari in the prefecture issued an evacuation order covering 2,527 homes and 6,911 residents.

Two hundred homes in Kurihara, Miyagi Prefecture were without power, NHK said. The quake caused the Tohoku Shinkansen to suspend services. Services were expected to resume around 10 p.m.


Seismograph

Shallow M6.0 earthquake strikes off Algeria

Algeria quake map
© Volcano Discovery

A shallow 6.0 magnitude earthquake struck off the Algerian coast on Thursday, the US Geological Survey said.

The USGS said the quake hit 20 kilometres north-east of the city of Bejaia at 1.04am local time (4.04am UAE), at a depth of 10 kilometres.


Seismograph

M6.6 earthquake strikes SSE of Ust'-Kamchatsk Staryy, Russia

Russia quake map
© Volcano Discovery
Date & time: 16 Mar 2021 18:38:22 UTC - 15 hours ago
Local time at epicenter: Wednesday, 17 Mar 2021 5:38 am (GMT +11)
Magnitude: 6.6
Depth: 22.1 km
Epicenter latitude / longitude: 54.7018°N / 163.2077°E (North Pacific Ocean, Russia)
Nearest volcano: Vysoky (158 km / 98 mi)

Seismograph

Strong M5.4 earthquake hits Reykjanes peninsula, Iceland

Iceland earthquake map
© Volcano Discovery
An earthquake of magnitude 5.4 hit the Reykjanes peninsula, Southwest Iceland, at 2:15 pm yesterday, mbl.is reports. Its source was 5.4 km southwest of Fagradalsfjall mountain. Residents as far away as Sauðárkrókur, North Iceland, reported having felt it, as well as ones in Vestmannaeyjar islands and Kirkjubæjarklaustur, South Iceland.

It was followed 20 seconds later by another quake of magnitude 4.0, prolonging the vibration of people's houses and increasing the sensation of being rocked by a boat. Earlier in the day, at 12:34 pm, an earthquake of magnitude 4.6 had already hit the area.

The M5.4 quake was the second largest since the swarm of earthquakes began with one of magnitude 5.7 on February 24.

Scientist are closely monitoring the area for the possibility of a volcanic eruption.

A recording from the security camera of the rescue team Þorbjörn's building in the town of Grindavík, on the Reykjanes peninsula, clearly shows how the quake shook vehicles, stored inside the building, located less than 5 km from the source. The video was posted by the rescue team on Facebook.


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Attention

Taal volcano, Philippines generates 252 volcanic earthquakes in 24 hours

Taal Volcano, Philippines
© SHUTTERSTOCK VIA CNN PH
Taal Volcano stays on alert level two on Monday after the Philippine Institute of Volcanology and Seismology recorded 252 volcanic earthquakes in the last 24 hours.
The Philippine Institute of Volcanology and Seismology (Phivolcs) on Monday maintained alert level 2 over Taal Volcano after it generated 252 volcanic earthquakes in the last 24 hours.

Under alert level 2, the volcano is seen to be under "increased unrest" as activities within the crater "indicate increased magmatic activity at shallow depths beneath the edifice," Phivolcs said in its 8 a.m. advisory.

"Sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can occur and threaten areas within the Taal Volcano Island," it said.

Last month, Phivolcs warned of Taal's possible eruption over a year since it last spewed ash and hot rocks, covering parts of Batangas, Cavite, and Laguna with mud and grime.