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Sat, 17 Nov 2018
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Earthquakes

Seismograph

Large magnitude 6.2 earthquake hits northern Chile - USGS

Chile earthquake
A powerful 6.2-magnitude earthquake struck the north of Chile, the United States Geological Survey (USGS) said.

The quake was registered at 22:19 GMT on Thursday, 118 kilometers (73 miles) to the northeast of the coastal city of Iquique.

The epicenter of the earthquake was located at the depth of 91 kilometers.

There have been no immediate reports about casualties or damage caused by the quake.

The 24 Horas news outlet noted that the tremors provoked the mass exodus of people from Iquique beaches, adding that no tsunami warning had been issued.

Comment: There has been an uptick in seismic activity recently. Some related articles from around the world recently include:


Seismograph

M6.2 earthquake strikes New Zealand's North Island, disrupts parliament session

New Zealand quake
© USGS
A powerful 6.2 earthquake has struck New Zealand, some 64 kilometers east of the town of Waitara, and was felt all across the island nation, including the capital city of Wellington.

No tsunami warning was issued by the nation's Civil Defence. So far there have also been no reports of damage or casualties caused by the tremors, which locals say lasted for about a minute.

However, the jolts which struck the country shortly after 3:00pm local time have led the Parliament to suspend its session.

"I never thought I'd have to do that, suspend the House until we find out what's happened," deputy speaker Anne Tolley said, according to local news. "There were public in the galleries and people need to just make sure their staff are OK. I mean we're in the safest building probably in the country - but just to make sure and get some advice."

Comment: There has been an uptick in seismic activity recently. Some related articles from the past week include:


Seismograph

Strong and shallow M6.3 earthquake strikes under Drake Passage off southern Argentina

Drake Passage quake
© USGS, EMSC
Quake struck at depth of 10 km

A 6.3-magnitude earthquake has struck off the southern tip of Argentina.

There were no immediate reports of damage or casualties from the quake, which hit 324 km south of the resort town of Ushuaia, on the archipelago of Tierra del Fuego.

It occurred in the ocean, in a hazardous stretch of water known as the Drake Passage.

The quake is thought to be shallow and struck at a depth of 10 km, at 2:54 am local time, according to the US Geological Survey.

Additional reporting by agencies

Seismograph

Strong and shallow M6.1 earthquake hits off the coast of El Salvador

El Salvador quake
© EMSC, USGS
A strong 6.1 magnitude earthquake has hit in the Pacific off the coast of El Salvador. The US Geological Survey said, the tremor occurred 24 kilometres under the surface last night, and its epicentre was some 94 kilometres southwest of coastal town of Acajutla. There are no reports of any damage or injuries.

Seismograph

Strong M5.8 earthquake rocks Romania - Also felt in Ukraine, Moldova and Bulgaria

Bucharest, Romania.
© Alamy
Bucharest, Romania.
An earthquake with a magnitude of 5.8 has rattled central and eastern Romania and was also felt in Ukraine, Moldova and Bulgaria, but there has been no reports of significant damage.

The tremor, which lasted for several seconds, occurred at 3:38 am Sunday, local time, in the eastern quake-prone region of Vrancea at a depth of 150 kilometres, Romania's National Earth Physics Institute said.

The quake woke residents in the capital, Bucharest, and elsewhere. Bucharest Ambulance Service spokeswoman Alice Grasu said a dozen or so residents telephoned immediately after the quake suffering from panic attacks.

Comment: USGS reports there has been elevated activity in the area following an unusually strong M6.8 quake in Greece just a few days ago, and in the last 24 hours there's been at least 8 notable events; an M4.7 quake in Greece, with multiple aftershocks, and another in Georgia at M4.1. Elsewhere on the planet, seismic and volcanic activity has also been rather high:


Seismograph

Shallow M6.2 earthquake strikes east of N Mariana Islands - USGS

Marian Islands quake
© Bing Maps
The earthquake comes a day after reports of Super Typhoon Yutu, which devastated the islands, destroying homes and cutting power and water supplies to thousands of people.


A 6.2 magnitude earthquake hit the Northern Mariana Islands, the US Geological Survey (USGS) reported on Friday. According to the other sources, the earthquake had 6.1 or 5.7 magnitude. At the moment there is no official data about casualties.

Earlier this month, the region suffered from a magnitude 7 earthquake that hit Papua New Guinea, causing tsunami warnings.

The Mariana Islands are located in the Pacific Ocean, 2,500 km (1,500 miles) from Japan, and approximately at the same distance from Papua New Guinea and Philippines. There are two administrative units on the islands - Guam, which is a US territory, and the Northern Mariana Islands, which make up a commonwealth of the US.

Seismograph

Shallow M6.8 earthquake off Greek coast triggers mini-tsunami warning

Greece quake
© EMSC
A magnitude-6.8 earthquake struck in the Ionian Sea off the coast of Greece early on Friday, briefly triggering a tsunami warning. No significant damage has been reported.

The quake struck at a shallow depth of 16.6km (10 miles) below the sea floor. It reached the island of Zakynthos, a popular tourist destination, with initial reports indicating that some of the buildings there sustained damage.

A photo showing debris on the floor and dangling wires has been posted by a local resident.

However, the majority of the buildings appeared to be intact. "Minimal damage. Back to bed," a tourist, apparently vacationing on Zakynthos, tweeted.

The tower of the 13th-century Castro Monastery in the Strofades, small islands to the southeast of Zakynthos, was also affected by the quake, though the extent of the damage is unclear.

The earthquake was so powerful that jolts were felt across the region in at least eight countries, including Malta, Libya, Italy, Macedonia, Albania, Bosnia, Bulgaria and Turkey, according to the EMSC.

The European-Mediterranean Seismological Center (EMSC) warned about a possible low-scale tsunami that could last for several hours after the earthquake, citing sea level changes following the tremor.

Seismograph

Strong earthquake swarm in Bárðarbunga volcano, Iceland

The quakes in Bárðarbunga are marked with green stars.
© IMO
The quakes in Bárðarbunga are marked with green stars.
A strong earthquake swarm hit the monster volcano Bárðarbunga late yesterday evening, Monday. Two separate 4+ earthquakes, including a 4.6 magnitude quake, as well as one measuring more than 3 on the Richter scale hit in short succession around midnight. The epicenters of all the quakes were in the eastern part of the caldera, at a significant depth.

According to the Seismic Monitoring System of the Icelandic Meteorological Office the first quake, a 2.8 magnitude quake was detected at 23:34 at a depth of 4.1 km (2.5 mi), followed by a second 2.7 magnitude quake 17 seconds later at a depth of 2.5 km (1.6 mi). Nine minutes past midnight a magnitude 4 quake was then detected at a depth of 1.1 km (0.7 mi). At the exact same moment a second, 4.6 magnitude quake was detected closer to the center of the caldera, at a depth of 7.1 km (4.4 mi). These were then followed by a third sharp 3.5 magnitude quake at a depth of 2.2 km (1.4 mi).

Seismograph

Strong magnitude 6.0 earthquake rocks Taiwan

Taiwan earthquake
© USGS
A 6.0 magnitude earthquake hit 104 km (65 miles) off Taiwan's coastal city of Hualien on Tuesday, Reuters reported, citing the country's weather bureau and the US Geological Survey.

According to Reuters, there were no immediate data on damage or casualties from the earthquake.

The epicenter of the quake was registered at the depth of about 30 kilometers (18.6 miles) some 104 kilometers off the coast of Taiwan's Hualien county at 12.34 p.m. local time (04:34 GMT).

Earthquake shook buildings in the capital, Taipei. No tsunami alert has been issued.

Beijing does not recognize Taiwanese independence and claims the island is part of China. Taiwan similarly does not recognize the central government in Beijing.

Seismograph

Strong and shallow M6.7 earthquake strikes near Vancouver Island, Canada

Quake off Canada
© USGS, EMSC
A powerful earthquake has struck off the coast of Canada, the US Geological Survey said.

Initial indications suggest it was a magnitude 6.7 quake that struck 117 miles off the coast of Port Hardy, a town on the north east end of Vancouver Island.

It is believed that the quake struck at a depth of 21 miles. There are currently no immediate reports of casualties or damage following the quake and no tsunami warning has been issued.

Comment: According to USGS, as of 22nd October, in 1 hour there were 3 quakes above M6 in Port Hardy, Canada:
M 6.6 - 218km SW of Port Hardy, Canada
Time: 2018-10-22 05:39:40 (UTC)
Location: 49.250°N 129.478°W

M 6.8 - 197km SW of Port Hardy, Canada
Time: 2018-10-22 06:16:28 (UTC)
Location: 49.347°N 129.214°W

M 6.5 - 223km SW of Port Hardy, Canada
Time: 2018-10-22 06:22:48 (UTC)
Location: 49.314°N 129.673°W