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Sun, 23 Jan 2022
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Earthquakes


Seismograph

Magnitude 6.2 earthquake strikes near Unalaska, Alaska

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A magnitude 6.2 earthquake struck south of Unalaska in Alaska, a major fishing port with 4,700 full-time residents, on Friday, the Alaska Earthquake Center at the University of Alaska Fairbanks said.

The quake struck at 8:17 p.m. (0517 GMT on Saturday), the center said.

The United States Geological Survey (USGS), which registered the quake at 6.2 magnitude, said it struck 74 km (46 miles) south of Unalaska at a depth of 3 km (2 miles).

The U.S. Tsunami Warning System said there was no tsunami warning after the quake.

(Reporting by Akriti Sharma in Bengaluru and Yereth Rosen; Editing by William Mallard)

Source: Reuters

Seismograph

Magnitude 6 quake strikes Talaud Islands, Indonesia

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An earthquake of magnitude 6 struck the Talaud Islands in Indonesia on Saturday, the GFZ German Research Center for Geosciences (GFZ) said.

The quake was at a depth of 24 km (15 miles), GFZ said.

Seismograph

Magnitude 6.3 earthquake shakes Japan

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A magnitude-6.3 offshore earthquake occurred off the east coast of Kyushu at around 01:08 JST Jan. 22.

The epicenter was about 24 km (15 miles) south-southeast of Saiki, Japan.

Strong shaking was probably felt in areas of southern Japan near the epicenter, particularly in eastern Kyushu.

The temblor did not immediately prompt the US Tsunami Warning System to issue a tsunami warning, advisory, watch, or threat. No casualties or damage were immediately reported in connection with the earthquake.


Bizarro Earth

Tonga volcano eruption created puzzling ripples in Earth's atmosphere


Comment: We're through the looking glass here people!


Powerful waves ringing through the atmosphere after the eruption of Hunga Tonga-Hunga Haʻapai are unlike anything seen before.
Hunga Tonga–Hunga Haʻapai
© NOAA
The US National Oceanic and Atmospheric Administration’s GOES-West satellite captured the explosive eruption of Hunga Tonga–Hunga Haʻapai.
Scientists are racing to understand a puzzling series of massive ripples in Earth's atmosphere triggered by the eruption of the Tongan volcano at the weekend. Satellite data shows that the event — which some fear might have devastated the Pacific-island nation — provoked an unusual pattern of atmospheric gravity waves. Previous volcanic eruptions have not produced such a signal, leaving experts stumped.

"It's really unique. We have never seen anything like this in the data before," says Lars Hoffmann, an atmospheric scientist at the Jülich Supercomputing Centre in Germany.

The discovery was made in images collected by the Atmospheric Infrared Sounder (AIRS), mounted on Nasa's Aqua satellite, in the hours after the eruption of the Hunga Tonga-Hunga Haʻapai volcano on 14 January.

They show dozens of concentric circles, each representing a fast-moving wave in the gases of the atmosphere, stretching for more than 16,000 kilometres. The waves reached from the ocean surface to the ionosphere, and researchers think that they probably passed around the globe several times.

Seismograph

Twin earthquakes in western Afghanistan kill at least 22

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Two earthquakes rattled Afghanistan's western Badghis province along the border with Turkmenistan on Monday afternoon, killing at least 22 people, a local official said.

There were fears the death toll could rise further as the first rescuers reached some of the remote villages struck by the tremors in what is one of Afghanistan's most impoverished and underdeveloped regions.

Chief of the province's culture and information department, said scores of homes were destroyed in the quakes.

The US Geological Survey registered a magnitude 5.3 quake at 2 p.m. and a second, magnitude 4.9 at 4 p.m. local time. They struck 41 kilometers (25 miles) east and 50 kilometers (31 miles) southeast of Qala-e-Naw, the provincial capital.


Seismograph

Magnitude-6.1 earthquake hits Papua New Guinea

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A day after Tonga was hit by giant waves following the eruption of a volcano in the ocean off its coast, a 6.1 magnitude earthquake has struck the island of Papua New Guinea, the US Geological Survey (USGS) has said.

The epicenter of the quake was located in the autonomous Bougainville region, at a depth of 408 kilometers (253 miles), according to the agency. The European Mediterranean Seismological Centre (EMSC) also registered the quake, putting its magnitude at 5.8. There have so far been no reports either of casualties or significant damage.

Papua New Guinea, a country of nine million, occupies the eastern half of the island of New Guinea and a group of smaller islands in Melanesia, north of Australia.

Seismograph

Magnitude 6.6 earthquake strikes off Indonesia's Java island

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The United States Geological Survey (USGS) has said that a 6.6-magnitude earthquake struck off the coast of Indonesia's Java island on Friday, causing buildings in Jakarta to shake.

At 0905 GMT, the quake struck to the island's southwest at a depth of 37 kilometres (23 miles).

The tremor was felt in the capital and rattled buildings. No tsunami warning was issued, and there were no early reports of injuries or damage.

Following the quake, some Jakarta residents were evacuated from their homes, and hundreds waited outside.


Seismograph

Shallow 6.0 magnitude earthquake in northern Mid-Atlantic Ridge

grpaph
UTC time: Monday, January 10, 2022 23:26 PM
Your time: Monday, January 10, 2022, 11:26 PM GMT
Magnitude Type: mww
USGS page: M 6.0 - northern Mid-Atlantic Ridge
USGS status: Reviewed by a seismologist
Reports from the public: 1 person
10 km depth

Seismograph

2 powerful earthquakes of magnitudes 6.8 and 6.6 hit Alaska - 3 of such strength globally within 12 hours

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6.6 magnitude earthquake 175 km from Unalaska, Alaska, United States

UTC time: Tuesday, January 11, 2022 12:39 PM
Your time: Tuesday, January 11, 2022, 12:39 PM GMT
Magnitude Type: mww
USGS page: M 6.6 - 60 km SE of Nikolski, Alaska
USGS status: Reviewed by a seismologist
Reports from the public: 4 people

11 km depth

Comment: These latest powerful quakes follow closely on the heels of another of similar strength off the coast of Cyprus about 12 hours earlier.


Seismograph

Cyprus earthquake: Powerful 6.6 magnitude tremor rocks region shaking homes

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A powerful earthquake measuring 6.6 has sent tremors across a region around Cyprus in the Mediterranean with reports of people feeling their houses shake.

The quake was at a depth of 2 km (1.24 miles), said the European Mediterranean Seismological Centre (EMSC).

It was centred 30 miles west-northwest of the town of Polis in Cyprus around 1am local time and the tremor was felt across the island and the region, including reports from as far away as Turkey, Israel and Lebanon.

There are no reports of damage or injuries.

But people have taken to social media having felt the force of the earthquake.


Comment: If confirmed as a 6.6M, it would be the strongest earthquake on the island since 1996.