Aardbevingen #22

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Op vrijdag 28 maart 2025 07:58 schreef Perrin het volgende:
Holy shit, in Bangkok gevoeld, dat is iets van 1000km verderop!

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Op vrijdag 28 maart 2025 07:58 schreef Perrin het volgende:
Holy shit, in Bangkok gevoeld, dat is iets van 1000km verderop!

sheesh!!!

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Op vrijdag 28 maart 2025 08:15 schreef xpompompomx het volgende:

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U bent nu in ZO-Azië?

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Op zondag 30 maart 2025 14:30 schreef Momo het volgende:
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Tonga 7.0

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Chinese scientists warn of more earthquakes near Tibetan Plateau region
A team of Chinese seismologists have published a study last month warning of a heightened risk of devastating earthquakes – like the one with magnitude 7.9 which struck Myanmar on Mar 28 – in and around the Tibetan Plateau region, reported the scmp.com Apr 6. The question is whether this will lead China to rethink the world’s biggest hydroelectric dam it has given the go ahead to be built on the Yarlung Tsangpo river in Tibet’s Metog County, near the border with India. It is known to be a seismically active area and prone to landslides.

The study was published after the devastating 7.1-magnitude Jan 7 earthquake in Tibet’s Mt Everest county of Dingri, and days before the Myanmar quake which flattened buildings and killed thousands of people.

The peer-reviewed study, led by senior engineer Zhu Hongbin with the Beijing Earthquake Agency, was stated to have been published on Mar 20 in the Journal of Geodesy and Geodynamics, an academic publication run by the China Earthquake Administration.

The seismologists have analysed around 150 years of seismic data – from 1879 to the present day – to identify six major earthquake “active periods” in “China” and adjacent regions.

Each period was stated to correlate with shifts in the Earth’s rotational speed – measured through changes in the length of a day (LOD) – and corresponding tectonic stress realignments.

An active period from 1897 to 1912 was found to have clustered 12 major quakes along the Pamir-Baikal seismic belt in East Asia.

Subsequent phases were stated to have migrated clockwise: to the northeastern Tibetan Plateau (1920-1934), its southeastern edge (1946-1957), Yunnan and north China (1970-1976), and the Bayan Har block on the eastern Tibetan Plateau (2001-2015).

And the current phase, the sixth, centres on the Bayan Har block’s periphery, with researchers cautioning that stress fields may now pivot northeast, increasing the risk in Sichuan, Yunnan and the Himalayan front.

“The region may currently be entering the nascent phase of a new seismic active period,” Zhu’s team was stated to have written.

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The study was stated to highlight accumulating strain in locked segments of the Longmenshan Fault in “southwest China”, which includes Tibet and was the site of the 2008 Sichuan earthquake, as well as the Eastern Himalayan Syntaxis, where GPS measurements show India’s northward push accelerating.

The Myanmar quake was stated to have occurred during a transitional LOD phase, which happened to fall in one of the predicted high-risk areas due to heightened northeast-oriented stress.

Satellite data was stated to reveal a 500km-long (310-mile-long) rupture zone extending all the way south to Thailand, with thrust mechanisms consistent with these forces.

Striking just 280km (174 miles) from the Tibetan Plateau’s southeastern edge, the Myanmar earthquake has intensified scrutiny of Zhu’s findings, the report said.

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However, China may rest its decision to continue with the Yarlung Tsanpo world’s biggest dam project with sceptics of Zhu and his team’s report. They have argued that global seismic activity in 2025 remains below historical averages.

“There’s no evidence Earth has entered a shaking mode,” Gao Mengtan, a senior researcher with the China Earthquake Administration, was quoted as having told China’s state media on Mar 31.

“Seismic activities this year are actually quieter than before,” he has maintained.

Meanwhile, the scmp.com report noted that the Myanmar disaster was followed by smaller tremors which rattled Tibet, Xinjiang (East Turkestan) and Guangdong the week before, unnerving residents.

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M5.2 San Diego earthquake linked to Elsinore Fault renews concerns over major seismic risk in Southern California

The M5.2 earthquake that struck San Diego County near Julian on April 14, 2025, occurred along the Elsinore Fault Zone, a major strike-slip fault in Southern California capable of producing earthquakes up to magnitude 7.8. The fault runs near densely populated areas including Los Angeles, Long Beach, and Riverside, and its long period of limited activity may indicate an increased potential for a significant seismic event, according to recent research.

The M5.2 earthquake that struck San Diego County on April 14 caused no injuries or major damage, but it drew renewed attention to the Elsinore Fault’s potential to generate much larger earthquakes. While historically quiet, the fault forms part of a complex system capable of producing cascading ruptures that could impact millions.

The Elsinore Fault Zone is a right-lateral strike-slip fault extending about 180 km (112 miles) through Southern California, running parallel to the San Andreas Fault and forming part of the broader San Andreas fault system. It cuts through the Peninsular Ranges and passes near several major population centers, making it a significant seismic hazard.

Despite appearing inactive, the fault holds the potential to generate a powerful M7.8 earthquake, according to Caltech seismologist Lucy Jones.

Stretching from the Sonoran Desert in Imperial County, the Elsinore Fault zone passes through the western parts of Riverside County, affecting cities such as Temecula, Murrieta, and Lake Elsinore.

According to the Southern California Earthquake Data Center (SCEDC), the fault has a slip rate of approximately 4 mm/year (0.16 inch/year), indicating gradual accumulation of tectonic strain. Though relatively quiet in recent decades, this slow deformation contributes to long-term seismic potential.

As the Elsinore Fault reaches Corona, it splits into two parts: the Chino Fault, which goes toward Chino Hills, and the Whittier Fault, which runs through or near areas like Whittier, La Habra Heights, Hacienda Heights, Rowland Heights, La Habra, Brea, and Yorba Linda.

According to Jones, an earthquake is plausible, and it would start on the Elsinore Fault and move onto the Whittier Fault. This would send powerful energy straight into the L.A. Basin, making it one of the more dangerous earthquake scenarios.

In a model developed by the U.S. Geological Survey, an M7.8 earthquake along the Elsinore-Whittier system could produce violent shaking across a wide region. Cities that could see serious damage include El Monte, Hacienda Heights, Rowland Heights, Pico Rivera, Whittier, La Habra, Brea, Yorba Linda, Placentia, Chino Hills, Corona, Lake Elsinore, Murrieta, and Temecula.

The Elsinore Fault has been relatively quiet historically. The most significant recorded event occurred on May 15, 1910, near Temescal Valley, with an estimated magnitude of 6.0. This earthquake caused minimal damage, primarily toppling chimneys in areas such as Corona, Temescal, and Wildomar.

The fault extends southeast into Mexico, connecting with the Laguna Salada Fault. On February 23, 1892, the Laguna Salada Fault experienced a significant earthquake, estimated between M7.1 and 7.3. This event caused damage in both northern Baja California and southern California.

It has an estimated recurrence interval of approximately 250 years for major rupture events, suggesting there is a potential for a significant future earthquake, although the exact timing remains uncertain.

Several cities like Torrance, Santa Monica, and West Hollywood have taken steps to strengthen their buildings against earthquakes, requiring retrofits to boost safety. But in Los Angeles, steel frame buildings are still not part of any mandatory retrofit program—a gap that’s sparked concern about how ready the city really is for the next big quake. Meanwhile, in the Inland Empire, many older brick buildings are especially at risk.

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Op woensdag 23 april 2025 12:13 schreef Frutsel het volgende:
Naschok van 5.5 lees ik

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Op vrijdag 2 mei 2025 15:38 schreef Momo het volgende:
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Kreta getroffen door flinke aardbeving

Het Griekse eiland Kreta is opgeschrikt door een aardbeving met een kracht van 6.1. Die zou ook op Cyprus en in Egypte zijn gevoeld. Inwoners vertelden Griekse media dat de beving ongebruikelijk lang leek te duren.

Veel eilandbewoners schrokken in de vroege ochtend wakker van de beving en zouden snel hun woningen hebben verlaten. Op beelden in lokale media is te zien dat producten in een supermarkt over de vloer bezaaid liggen. Ook zijn er berichten over kleine aardverschuivingen.

De brandweer zegt nog geen hulpverzoeken of meldingen van ernstige schade te hebben ontvangen. Eenheden voeren patrouilles uit om een beeld te krijgen van de situatie. De burgemeester van Heraklion zei tegen omroep ERT dat er geen grote problemen zijn en dat scholen gewoon open kunnen blijven.

Het ging volgens het Amerikaanse geologische instituut USGS om een beving op bijna 69 kilometer diepte. Het epicentrum bevond zich ongeveer 58 kilometer ten noordoosten van de plaats Eloúnda op het onder toeristen populaire eiland.

De regio wordt vaker getroffen door aardbevingen. Eerder dit jaar ontstond een uittocht van toeristen en inwoners van het eiland Santorini toen aardschokken daar over een langere periode bleven aanhouden.

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Aardbeving met kracht van 6,1 bij Grieks eiland Kreta, ook gevoeld in andere landen
Voor de kust van het Griekse eiland Kreta is donderdagochtend een aardbeving met een magnitude van 6,1 gemeten. Dat meldt het Amerikaanse seismologische instituut (USGS).

De aardbeving vond plaats om 06.19 uur lokale tijd (05.19 uur Nederlandse tijd), op 69 kilometer diepte. Het epicentrum bevindt zich in de Kretenzische Zee op 58 kilometer van het vissersdorpje Elounda.

Volgens lokale media sprongen bewoners uit hun bed en ooggetuigen meldden dat op de schok een luid gebrom volgde. Veel mensen verlieten hun huizen om zichzelf in veiligheid te brengen.

De brandweer laat weten tot nu toe geen oproepen voor hulp te hebben ontvangen en er zijn voorlopig geen meldingen van ernstige schade. Volgens lokale media hebben de scholen op Kreta geen schade opgelopen en zullen ze normaal gezien open gaan. De situatie wordt voortdurend geëvalueerd.

Mis nooit meer het laatste nieuws
Krijg een melding bij belangrijk nieuws over AD Buitenland.

00:58
Kreta opgeschrikt door krachtige aardbeving
‘Kort, maar hevig. Een flinke schok, het hele huis trilde en ik schrok er van wakker’, zo getuigde een inwoner van Agios Nikolaos op de website van het EMSC, het Euro-Mediterrane Seismologisch Centrum.

De beving en enkele naschokken werden ook gevoeld op andere Egeïsche eilanden en in delen van het Griekse vasteland, waaronder in hoofdstad Athene. Op grotere afstand werd de beving gevoeld in Israël, Egypte en Cyprus.

Uit voorzorg werd er een tsunamialarm afgekondigd. Inwoners kregen een waarschuwing via sms, maar de tsnumami bleef uit.