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© CSEMStrong tremors were felt across North India, the first being reported from Delhi-NCR and Jammu and Kashmir's Poonch district.
A powerful 6.1 magnitude earthquake jolted Afghanistan, Pakistan and parts of North India on Saturday evening. Strong tremors were felt across North India, the first being reported from Delhi-NCR and Jammu and Kashmir's Poonch district.
The Indian Meteorological Department (IMD) said the epicentre of the quake was Hindu Kush, which is a mountain range that stretches near the Afghan-Pakistan border, from central Afghanistan to northern Pakistan.
The earthquake hit at a depth of 10km in the Mentawai island region in West Sumatra province, about 100km south-east of the town of Tuapejat and 200km south of the major port city of Padang, according to the USGS.
Officials are still assessing the impact but there were no immediate reports of damage and casualties.
"The quake was felt very strongly in Tuapejat. Our officers are still assessing the impact but so far everything is safe," said the head of Mentawai search and rescue agency Akmal, who like many Indonesians goes by one name.
An official with emergency services in Chiapas said that he felt the quake but that he did not see any immediate damage. A Reuters witness said the quake was felt in San Salvador.
The epicenter of the quake hit at a depth of 42 miles (68 km) near the Pacific coast and Mexico's border with Guatemala, according to the USGS.
There were no immediate reports of major damage in Mexico City, though some people evacuated office buildings.
Source: Reuters
Shortly after, the area felt another smaller tremor, which registered 5.2 magnitude.
The earthquakes hit just south of the island between Fiji and Tonga, and were detected at a depth of over 500 km.
So far, there has been no tsunami alert issued by the Pacific Tsunami Warning Center.
Source: Indo-Asian News Service
According to the USGS, the epicenter was 73 miles from Arawa, Papua New Guinea.
In the last 10 days, there have been no earthquakes of magnitude 3.0 or greater centered nearby.
This information comes from the USGS Earthquake Notification Service and this post was created by an algorithm written by the author.
© DF1PAW/WIKIMEDIA COMMONS; CC BY-SA 4.0Laacher See caldera, as seen today.
It's easy to forget that plenty of once-prolific volcanoes around the world have long fallen silent; geologically tame countries were often once replete with effusive or explosive eruptions. Just take Germany's Laacher See Volcano (LSV), found in the Eifel mountain range within the Rhineland-Palatinate state. This lake-filled cauldron ("caldera") is a rather serene site today, but it was originally forged out of fury. Around 12,900 years ago, a cataclysmic eruption, one that coated plenty of Europe in ash, was responsible for creating the crater-like edifice that we can see there today.
Make no mistake: coming in at a 6 on the Volcanic Explosivity Index (VEI), which tops out at 8, this was an unmistakably huge eruption. Today, according to Volcano Discovery, it's the only caldera in Central Europe, which means that in the last 12-13,000 years, this part of the world has never seen an eruption as powerful as the one that formed LSV.
Its days of volcanism aren't necessarily done and dusted, though. A new study, published in Geophysical Journal International, reveals that there are some curious rumblings going on beneath LSV. These specific tremors, known as deep low-frequency earthquakes, are a clear sign that magmatic fluids are on the move.
That's certainly noteworthy. The East Eifel Volcanic Field, of which LSV is part of, hasn't experienced an eruption for roughly 12,000 years, so the movement of magma beneath the surface is something that volcanologists are keen to document and comprehend.
© Google, EMSC, TW/SAM
The epicenter, with a depth of 10 km, was initially determined to be at 43.0778 degrees south latitude and 42.2262 degrees east longitude.
© USGS
There was no immediate tsunami warning or reports of damage or casualties from the quake, which hit at a depth of 36 km (22 miles), at a distance of about 230 km (143 miles) south of Raba in the east of the island, which forms part of West Nusa Tenggara province.
The quake followed one of magnitude 6 that struck in the same area.
Reporting by Clarence Fernandez; Editing by Robert Birsel
© Loren Holmes/ADNThe northbound onramp for International Airport Rd. at Minnesota Blvd. collapsed Friday morning, Nov. 30, 2018 after a strong earthquake shook southcentral Alaska.
Residents are reporting damage in the nearby areas via social media. One man tweeted a photo of his toppled chimney and a local television station showed its studio filled with debris. Former Alaska governor and vice presidential candidate Sarah Palin tweeted, saying her family is intact but her "house is not."
"This is a large earthquake and there have been numerous aftershocks," said John Bellini, a geophysicist for the U.S. Geological Survey. He said the largest aftershock was a 5.7 magnitude quake about six minutes after the big one.
The quake struck at 8:29 a.m. local time about seven miles north of Anchorage, the USGS reported. There were no immediate reports of injuries or deaths. Officials have since canceled a tsunami warning for coastal areas of southern Alaska.
Comment: UPDATE December 3rd
Anchorage Daily News reports that small aftershocks have continued with 1,800 measured between last Friday and Monday. A total of 153 measured greater than 3.0, 18 were at 4.0 or greater and five were greater than 5.0, according to the Alaska Earthquake Center.
© Alaska Earthquake Center.Earthquakes associated with Friday's 7.0 earthquake north of Anchorage as of 5:45 p.m. Sunday. The red dots represent shakes in the previous 24 hours, and the yellow dots are from the past week (with virtually all of them since Friday. The large dot directly north of the city was Friday's quake).
Residents in Alaska are still reporting aftershocks from the event:
The latest big aftershock happened last Sunday - a magnitude 5.0 jolt that flared already frayed nerves and prompted panicky posts on social media.
That one "reminded people again that it's not over yet," said seismologist Natalia Rupert at the Alaska Earthquake Center.
There have been more than 7,800 aftershocks since the main earthquake struck 7 miles (11 kilometers) north of Anchorage, the state's most populous city. Most were too small to feel, but 20 have had magnitudes of 4.5 or greater. Rupert expects the temblors to continue for months, although the frequency has lessened, from about 200 daily to a couple dozen a day.
Comment: The Hindu reports: