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Mon, 24 Jan 2022
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Earthquakes

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Shallow 6.2 magnitude earthquake off Kermadec Islands

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Very strong magnitude 6.2 earthquake at 10 km depth

Date & time: Jan 10, 2022 00:06:31 UTC - 20 hours ago
Local time at epicenter: Sunday, Jan 9, 2022 12:06 pm (GMT -12)
Magnitude: 6.2
Depth: 10.0 km
Epicenter latitude / longitude: 33.7964°S / 179.5534°E

Info

Geomythology looks to ancient stories for hints of scientific truth

Everyone loves a good story, especially if it's based on something true.

Consider the Greek legend of the Titanomachy, in which the Olympian gods, led by Zeus, vanquish the previous generation of immortals, the Titans. As recounted by the Greek poet Hesiod, this conflict makes for a thrilling tale - and it may preserve kernels of truth.

The eruption around 1650 B.C. of the Thera volcano could have inspired Hesiod's narrative. More powerful than Krakatoa, this ancient cataclysm in the southern Aegean Sea would have been witnessed by anyone living within hundreds of miles of the blast.

Thera Volcano
© Steve Jurvetson, CC BY
The massive eruption of the Thera volcano more than 3,500 years ago left behind a hollowed out island, today known as Santorini.
Historian of science Mott Greene argues that key moments from the Titanomachy map on to the eruption's "signature." For example, Hesiod notes that loud rumbles emanated from the ground as the armies clashed; seismologists now know that harmonic tremors - small earthquakes that sometimes precede eruptions - often produce similar sounds. And the impression of the sky - "wide Heaven" - shaking during the battle could have been inspired by shock waves in the air caused by the volcanic explosion. Hence, the Titanomachy may represent the creative misreading of a natural event.

In 2021 I published the first textbook in the field, Geomythology: How Common Stories Reflect Earth Events. As the book demonstrates, researchers in both the sciences and the humanities practice geomythology. In fact, geomythology's hybrid nature may help to bridge the gap between the two cultures. And despite its orientation toward the past, geomythology might also provide powerful resources for meeting environmental challenges in the future.

Seismograph

Strong shallow 6.6-magnitude earthquake hits China's Qinghai province: USGS

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The epicentre of the quake, which struck at about 1:45 am at a shallow depth of 10km

A strong earthquake with a magnitude of 6.6 struck China's remote northwestern Qinghai province early Saturday, the US Geological Survey said.

The epicentre of the quake, which struck at about 1:45 am (1745 GMT) at a shallow depth of 10 kilometres (six miles), was located about 140 kilometres north-northwest of the city of Xining, US seismologists said.


Source: AFP

Seismograph

Strong magnitude 6.1 earthquake shakes Nicaragua

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A strong earthquake shook Nicaragua Thursday morning, sending people fleeing into the streets, but there were no initial reports of damage.

The U.S. Geological Survey said the earthquake had a preliminary magnitude of 6.1 — down from an initial calculation of 6.2. It was centered on the country's Pacific coast about 36 miles (59 kilometers) south of Corinto. The earthquake was at a depth of 17 miles (27.5 kilometers).

It was felt strongly in Managua, the capital, where residents milled about outside their homes and workers cleared government buildings. Travelers at the capital's international airport were evacuated from the terminal.

The earthquake, which hit at 10:25 a.m. (11:25 a.m. EST; 1625 GMT), was also felt to the north in El Salvador.

Vice President and first lady Rosario Murillo told government media that despite the earthquake's strength there had been no immediate reports of victims nor damage.

Source: AP

Seismograph

Strong mag. 6.0 earthquake - Banda Sea, Indonesia

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Strong magnitude 6.0 earthquake at 556 km depth

Date & time: Jan 4, 2022 20:55:47 UTC - 15 hours ago
Local time at epicenter: Wednesday, Jan 5, 2022 5:55 am (GMT +9)
Magnitude: 6
Depth: 556.2 km
Epicenter latitude / longitude: 4.7993°S / 125.0518°E (Banda Sea, Indonesia)

Seismograph

Strong magnitude 6.1 earthquake - North Atlantic Ocean

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Very strong magnitude 6.1 earthquake at 10 km depth

Date & time: Jan 4, 2022 03:18:37 UTC - 6 hours ago
Local time at epicenter: Tuesday, Jan 4, 2022 1:18 am (GMT -2)
Magnitude: 6.1
Depth: 10.0 km
Epicenter latitude / longitude: 35.2646°N / 35.2407°W

Seismograph

6.2 magnitude earthquake hits Taiwan, tremors felt in capital city

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A strong earthquake struck off the coast of eastern Taiwan on Monday evening with shaking felt in the capital Taipei, but authorities said there were no immediate reports of widespread damage or injuries.

The United States Geological Survey (USGS) said the quake measured 6.2 in magnitude and hit at a depth of 28 kilometres (17 miles).

The epicentre was given in the sea 64 kilometres east of the coastal city of Hualien.

Taiwan's fire service said initial impact reports were limited to a handful of people stuck in elevators who had since been rescued.


Seismograph

Midlands US keep shaking as seventh low-level quake within the last week is confirmed in S. Carolina area

earthquakes south carolina
© South Carolina Emergency Management Division/Facebook
USGS registering at 2.4 magnitude earthquake centered near Elgin, SC. The quake occurred at 4:12 this morning (12-29-21).
More shaking in Midlands with another earthquake. It was among the strongest to hit

Earthquakes and aftershocks continue to shake the Columbia area as tremors from a fifth quake were confirmed early Wednesday morning.

Dozens of people have reported feeling the 2.4-magnitude earthquake that hit near Elgin at 4:12 a.m., according to the U.S. Geological Survey. The quake recorded at a depth of 6.0 kilometers is the fifth to hit the Midlands in a three-day span.

The latest earthquake was more powerful than the last two confirmed in Kershaw County Monday night, and the sixth most powerful of the 28 earthquakes confirmed in the Palmetto State in 2021, according to the South Carolina Department of Natural Resources.

Attention

12km high ash cloud from Tongan volcanic eruption continues to spread

This picture taken on December 21, 2021 shows white gaseous clouds rising from the Hunga Ha'apai eruption seen from the Patangata coastline near Tongan capital Nuku'alofa.
© Mary Lyn Fonua
This picture taken on December 21, 2021 shows white gaseous clouds rising from the Hunga Ha'apai eruption seen from the Patangata coastline near Tongan capital Nuku'alofa.
The Hunga Tonga Hunga Ha'apai volcano continues to erupt intermittently, and ash has been detected in all directions up to 30km away.

The head of Tonga Geological Services, Taaniela Kula, said that the ash cloud had risen to heights of 12km and the direction of ash had varied with the wind conditions.

"On Tuesday, ash was drifting east but shifted directions last night to north east and has continued to drift in a northerly direction today," he said.

Overall, the amount of ash, steam and gas being spewed from the volcano has reduced, in comparison to last week, Kula said.

He noted that the volcano was about 60km away from uninhabited areas, and that no earthquakes had been detected on their seismometers.


Seismograph

Indonesia: Islands rocked by massive 7.3 magnitude earthquake - locals on high alert

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The extremely strong quake hit Kepulauan Barat Daya, some 113km northeast of Lospalos, Municipio de Lautem, Timor-Leste. It struck at 3.25am local time at an immediate and considerable depth of 200km, according to the European-Mediterranean Seismological Centre (EMSC). That has since been downgraded slightly to a depth of 167km by the United States Geological Survey (USGS).

A tsunami warning has not been issued for the surrounding islands.

The impact of the earthquake was felt as far as 600km away in Darwin, the capital of Australia's Northern Territory.

Around 1,700 of its residents have reported feeling tremors early on Thursday, according to Geoscience.

The Volcano Discovery website said, based on preliminary seismic data, the earthquake was likely felt by "many" people in the area of the epicentre.