Earthquakes
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Seismograph

Shallow 7.5-magnitude earthquake hits Drake Passage off South America


abc7.com
Fri, 22 Aug 2025 09:10 UTC
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Earthquake strikes South America
A major, preliminary magnitude 7.5 earthquake struck in the South Atlantic Ocean late Thursday, the United States Geological Survey reported, prompting Chilean authorities to issue an advisory for a potential tsunami along parts of Antarctica.

There were no evacuation orders immediately declared for Chile or Argentina, the two countries closest to the quake.

The temblor happened at 11:16 p.m. local time in Argentina about 710 kilometers (441 miles) southeast of Ushuaia, Argentina, in the Drake Passage, according to the U.S. Geological Survey. The earthquake had a preliminary depth of 10.8 kilometers (6.7 miles).

The Drake Passage connects the South Atlantic and South Pacific oceans between the southern tip of South America and the Antarctic Peninsula.

Though less quake-prone than other stretches of Chile's coast, the Drake Passage straddles a highly active seismic and geological zone.

The area is very remote and there were no immediate reports of damage or casualties.

AP
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Moment massive landslide crashes into the sea in Santorini, Greece - 6 months after island rattled by earthquakes

Imogen Garfinkel
Daily Mail
Wed, 20 Aug 2025 10:27 UTC
A huge section of land suddenly gave way in the clifftop village of Imerovigli on Sunday afternoon after intense construction activity made the ground unstable
A huge section of land suddenly gave way in the clifftop village of Imerovigli on Sunday afternoon after intense construction activity made the ground unstable.
A massive landslide has crashed into the sea in Santorini, engulfing a village with dust as tourists watched on - just six months after the holiday island was rattled by earthquakes.

A huge section of land suddenly gave way in the clifftop village of Imerovigli on Sunday afternoon after intense construction activity made the ground unstable.

It comes just months after the paradise island was rattled by more than 20,000 earthquakes between January 26 and February 22 earlier this year.

Comment: Santorini landslides raise alarm after Cyclades earthquakes in Greece

The country declared a month-long state of emergency as earthquakes struck the volcanic island every ten minutes, causing around 11,000 - more than half Santorini's population - to flee.

The combination of seismic activity and overbuilding have been suggested as potential causes for the recent landslide - with over-development transforming fragile soil into hollow ground.

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Seismograph

6.2 magnitude earthquake strikes off southeastern Solomon Islands


Anadolu Agency
Thu, 14 Aug 2025 18:43 UTC
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A 6.2 magnitude earthquake struck near the southeastern Solomon Islands in the Pacific Ocean on Thursday, with no immediate reports of a tsunami warning, the US Geological Survey said.

The quake hit 111 kilometers (69 miles) off the Solomon Islands' town of Lata, capital of the Temotu province, at 1622GMT at a depth of 52.7 kilometers (32.74 miles)

There were no immediate reports of casualties or damage.
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Tsunami-causing landslide in Alaska on August 10 was largest in decade, earthquake center finds

Rod Boyce
gi.alaska.edu
Tue, 12 Aug 2025 12:10 UTC
East side of Sawyer Island, heading west. The island was stripped of vegetation except for the lone tree at the top. Nick Heilgeist’s kayaking group was picked up and got a ride from their campsite on Harbor Island to Sawyer Island.
© Nick Heilgeist.East side of Sawyer Island, heading west. The island was stripped of vegetation except for the lone tree at the top. Nick Heilgeist’s kayaking group was picked up and got a ride from their campsite on Harbor Island to Sawyer Island.
Sunday's massive tsunami-causing landslide in Southeast Alaska likely sent more than 100 million cubic meters of debris into an icy fjord and onto a prominent glacier in one of the largest slides in at least 10 years, according to analysis by the Alaska Earthquake Center.

The center's rapid characterization and pinpointing of the landslide demonstrates the center's growing capability in a new area of real-time hazard analysis. The center, located at the University of Alaska Fairbanks Geophysical Institute, has been working for several years to advance its rapid characterization and detection of landslides.

The center's preliminary analysis, using a method its team has been developing, estimates the landslide's volume is likely larger than 100 million cubic meters, equivalent to the content of 40,000 Olympic-sized swimming pools.

"​​This is larger than anything in the past decade in Alaska," Alaska Earthquake Center Director Michael West said. "It's going to get a lot of attention from scientists."

Sunday's landslide occurred at about 5:30 a.m. at the head of Tracy Arm, where the South Sawyer Glacier reaches the water. Tracy Arm is a fjord located about 50 miles southeast of Juneau.


Comment: The Alaska Earthquake Centre reports:
[...]

This event is extremely interesting scientifically. The landslide was preceded by hours of small magnitude 1-2 earthquakes leading up to the slide. These were first recognized by Western Washington professor Jackie Caplan-Auerbach, who previously held a postdoc position at UAF. The precursors are very clear in the ~18 hrs prior to the slide and likely well before that. Our seismic data analysts have analyzed about a hundred of these precursors and they emanate from the same area as the landslide.

[...]


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Seismograph

Shallow magnitude 6.3 quake hits Papua in eastern Indonesia: USGS


Arab News
Tue, 12 Aug 2025 09:12 UTC
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A magnitude 6.3 earthquake struck the eastern Indonesian region of Papua on Tuesday, the US Geological Survey said, but a monitor said there was no tsunami threat.

The epicenter of the quake, which struck at around 5:24 p.m. (0824 GMT), was around 193 kilometers northwest of the town of Abepura in Papua, USGS said.

The Pacific Tsunami Warning Center said there was no tsunami threat.

There were no immediate reports of casualties or damage.

USGS earlier gave a magnitude of 6.5 before revising it downward.

Comment: The US Geological Survey also reported a shallow depth of 10kms.

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Seismograph

Shallow 6.1 magnitude earthquake strikes western Turkiye


Morocco World News
Sun, 10 Aug 2025 18:53 UTC
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A powerful earthquake of 6.1 magnitude struck off western Turkiye on Sunday evening, sending tremors across multiple provinces near Istanbul, the country's largest city.

Tyrkiye's disaster management authority (AFAD) reported that the earthquake hit Balikesir province at 7:53 p.m. Istanbul's local time.

AFAD also reported that the earthquake struck just 10 kilometers below the surface, according to German Research Centre for Geosciences(GFZ).

People felt the tremors throughout several provinces surrounding the epicenter, with authorities reporting no deaths or significant damage.

Interior Minister Ali Yerlikaya announced on X that emergency response teams immediately began conducting safety inspections across Istanbul and neighboring areas.

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Seismograph

Russia: Strong 6 magnitude earthquake strikes near Severokurilsk following recent seismic activity

Christian Baha
Indiatvnews.com
Sat, 09 Aug 2025 19:36 UTC
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A strong earthquake with a magnitude of 6.0 on the Richter scale struck Russia on Saturday evening. The earthquake occurred at 7:34 PM local time near Severokurilsk, located 267 kilometres southeast of the epicentre, as reported by the United States Geological Survey (USGS). The tremors were felt in several regions of Russia, particularly in the vicinity of the Kuril Islands.

Details of the earthquake

According to the USGS Earthquake, the earthquake's epicenter was situated in the Sea of Okhotsk, off the eastern coast of Russia. The quake occurred at a depth of around 10 kilometers, which is considered relatively shallow and can lead to more intense ground shaking. While there have been no immediate reports of casualties, the strong tremors prompted local authorities to assess potential damage.
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Volcano

A parade of volcanoes is erupting in Russia following an 8.8 earthquake

Perri Thaler
Live Science
Tue, 05 Aug 2025 00:00 UTC
volcano erupt
© Sheldovitsky Artem Igorevich/IViS/Handout/Anadolu/Getty ImagesThe volcano Krasheninnikov erupted for the first time in about 500 years following the 8.8 magnitude earthquake in eastern Russia.
Six Russian volcanoes erupted shortly after an 8.8 magnitude earthquake and aftershocks struck nearby, with a seventh possibly to follow.

Klyuchevskaya erupted first, on July 30. It had already shown signs of unrest before the earthquake, and experts deduced that the quake likely intensified the eruption but didn't trigger it. However, it's difficult to know the exact effect of the earthquake on the volcano. Eruptions of nearby volcanoes Shiveluch, Bezymianny, Karymsky, Avachinsky and Krasheninnikov soon followed and continue through today.

All of the volcanoes sit on the Ring of Fire, a geological feature notorious for volcanic and seismic activity.

The area around this parade of erupting volcanoes, called the Kamchatka Peninsula, is sparsely populated, so there doesn't seem to be an active threat to local communities. However, the eruptions could pose a risk to planes if they were to fly through ash plumes, Harold Tobin, a seismologist at the University of Washington, told Live Science in an email.

Despite the recent spate of eruptions, experts say this kind of volcanic activity is not out of the ordinary. "About 40 to 50 volcanoes are actively erupting around the world at any given time. Right now is no different," Tobin said. "Kamchatka is a very volcanically active region."
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Seismograph

Magnitude 6.2 earthquake off Russia's Kamchatka


Khaleej Times
Mon, 04 Aug 2025 09:03 UTC
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An earthquake of magnitude 6.2 hit Russia's Kamchatka, the UAE's NCM's National Seismic Network reported on Monday, August 4.

The quake took place at 8.20am UAE time.

Meanwhile on Sunday, August 3, a 6.8-magnitude earthquake hit Kamchatka at 9.37am UAE local time.

The natural calamity comes days after a massive 8.8-magnitude earthquake struck off Russia's Far Eastern Kamchatka Peninsula on Wednesday, July 30.

Tsunami warnings were issued across several countries after a tsunami of up to 4 metres hit the nation, prompting warnings and evacuations stretching across the Pacific Ocean, including the US, Japan, Philippines, Ecuador and China.
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Seismograph

Magnitude 6.8 earthquake strikes near Kuril Islands, Russia


The Nation (Thailand)
Sun, 03 Aug 2025 13:08 UTC
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An earthquake with a magnitude of 6.8 struck near the Kuril Islands in Russia on Sunday, with no immediate reports of damage or tsunami warnings issued.

The tremor occurred at 12.37pm Thailand time on August 3, according to the United States Geological Survey (USGS), which reported the quake using the Moment Magnitude W-phase method (Mww).

The epicentre was located approximately 118 kilometres east of Severo-Kurilsk, Russia, in the North Pacific Ocean, near the seismically active Kuril Islands.

There were no initial reports of damage or injuries, and the Pacific Tsunami Warning Centre (PTWC) has not issued any tsunami alerts at this stage.
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