Aardbevingen #11

quote:

Eruption Etna linked to quake in Spain
ROME, May 12 (Xinhua) -- The eruption of the Etna volcano in southern Italy early Thursday is connected to the earthquakes that rocked the Spanish region of Murcia, killing 12 people and injuring more than 170 others, a seismology expert said Thursday.

"We are currently witnessing an intense seismic activity in the entire Mediterranean area from Spain all the way to Malta which has a certain impact on regional volcanoes," said Domenico Patane, director of the Sicily office of Italy s National Geophysics Institute.

Patane said volcanoes are like windows from where underground magma surfaces and it's normal that they respond to earthquakes occurring in a geographic proximity.

"The Spanish eastern coast hit by the quake, after all, lies close to Italy, in the Mediterranean. Both Spain and Sicily are on the same earth plate," he said.

The earthquakes in Spain on Wednesday, which could be felt in Madrid, reportedly had their epicenter near the towns of Lorca and Totana in the Murcia region. The initial tremor of 4.4 magnitude was followed by a quake of about 5.2 magnitude.

Around 2 a.m. Thursday people in Sicily felt the earth slightly tremble and heard the sound of an explosion coming from Etna's pit crater. < The eruption sent flying massive quantities of lava and volcanic ash, which spilled on the main town of Catania and other nearby villages but luckily caused no serious damage.

The central airport was forced to close after it was submerged by the ash.

Patane said there were no severe risks for local inhabitants but just for buildings and infrastructures that could be damaged by the ash and condensed lava.

"It's normal to have frequent small-scale quakes and minor volcano eruptions in the Mediterranean," he said, "We're used to seismic activity here in Sicily and recently several minor shocks have been felt also across the whole of Italy."

Mount Etna is the highest active volcano in Europe, with a 45-kilometer-diameter crater.

quote:

Op donderdag 12 mei 2011 01:12 schreef -CRASH- het volgende:

Als het 2000 jaar geleden was geweest..... Dan was het wel binnen de grenzen van het Romeinse rijk

quote:

Op vrijdag 20 mei 2011 00:56 schreef Godshand het volgende:
Gek van dat Griekse. Nooit eerder van grote bevingen in Griekenland gehoord, binnenkort voor het eerst?

quote:

Op vrijdag 20 mei 2011 00:56 schreef Godshand het volgende:
Gek van dat Griekse. Nooit eerder van grote bevingen in Griekenland gehoord, binnenkort voor het eerst?

quote:

25% kans op 7.0 aardbeving Christchurch binnen 12 maanden
Wetenschappers hebben verantwoordelijken van de Nieuw-Zeelandse stad Christchurch gewaarschuwd voor mogelijk een nieuwe zware aardbeving in de nabije toekomst. De stad raakte zwaar beschadigd door twee krachtige aardschokken sinds september.
Seismologen van het staatsagentschap GNS Science ramen de kans op een aardbeving tot kracht 7 de komende twaalf maaanden op bijna één op vier.

De voorspelling werd vorige week woensdag op een bijeenkomst achter gesloten deuren overgemaakt aan bestuurders van de tweede stad van het land, bericht het dagblad The Press dinsdag.

Op 4 september werd Christchurch en omgeving getroffen door een aardbeving met een kracht van 7,1. Toen vielen geen doden. De beving van 22 februari, met een kracht van 6,3, eistte 181 mensenlevens. Die beving was minder diep en het epicentrum lag dichter bij de stad.

De kansen op een beving met een kracht 5 tot 6 de komende 12 maanden worden door de seismologen op meer dan 90 procent becijferd.

Na de aardbevingen zijn 900 gebouwen in de stad veroordeeld tot afbraak. Bij de Aardbevingscommissie, die schadevergoedingen toekent, zijn 344.000 claims ingediend. (belga/jv)

quote:

Op maandag 6 juni 2011 14:29 schreef aloa het volgende:
Christchurch opnieuw getroffen door beving

(Novum/AP) - WELLINGTON - De Nieuw-Zeelandse stad Christchurch is maandag opnieuw getroffen door een beving. Er zijn geen berichten van zware schade of gewonden. Volgens de Amerikaanse geologische dienst USGS had de beving een kracht van 5,0. Het centrum lag op 22 kilometer ten westen van Christchurch op een diepte van drie kilometer.

Christchurch werd in februari getroffen door een zware aardbeving, waarbij 181 mensen om het leven kwamen. Sindsdien wordt de stad nog regelmatig opgeschrikt door naschokken. De beving van februari was de duurste natuurramp in de geschiedenis van het land. De schade beliep ruim tien miljard euro.

Nieuws.nl

Raw Video: Aftershock Rocks New Zealand City

quote:

Op maandag 6 juni 2011 16:29 schreef Godshand het volgende:

[..]

Wat een aktiviteit daar de laatste tijd. Wellicht ook in die buurt een vulkaanuitbarsting binnenkort?

quote:

Op maandag 13 juni 2011 08:44 schreef rechtsedirecte het volgende:
Werd door veel mensen als "zwaarder" ervaren dan de beving in februari

quote:

Op dinsdag 14 juni 2011 22:39 schreef aloa het volgende:
Eén dode na reeks aardbevingen in Christchurch

De aardbevingen die de Nieuw-Zeelandse stad Christchurch gisteren troffen, hebben een bejaarde man het leven gekost. 45 mensen raakten gewond. Eerder werd melding gemaakt van slechts tien gewonden.

quote:

MAP 4.6 2011/06/16 07:05:39 -6.111 150.326 118.1 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 4.8 2011/06/16 06:55:53 -5.876 151.333 35.0 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 4.8 2011/06/16 03:58:22 -5.735 151.106 35.2 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 4.7 2011/06/16 03:07:15 -6.197 151.214 33.4 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 4.7 2011/06/16 01:46:13 -6.062 151.167 44.9 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 4.8 2011/06/16 01:25:12 -5.954 151.062 36.1 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 6.6 2011/06/16 00:03:36 -5.994 151.095 21.5 NEW BRITAIN REGION, PAPUA NEW GUINEA
MAP 5.0 2011/06/14 07:13:07 -5.023 153.306 39.4 NEW IRELAND REGION, PAPUA NEW GUINEA

quote:

Reports of damage after 5.3 aftershock hits Canterbury

A strong aftershock has struck Canterbury tonight, prompting reports of damage and the closure of Christchurch Airport.

The shake measured 5.3 and was at a depth of 12km. It was recorded 10km west of Akaroa, 30km south-east of Christchurch, striking at 10.34pm.

People who experienced the aftershock have contacted ONE News, saying the 5.3 recording should be upgraded.

Dave Allan wrote "we have some hardened earthquake people here and this time even they have turned white and their knees are shaking", while Elena Gapper from the Merivale suburb of Christchurch said it felt "more like a 6.0" to some.

Earthquake Christchurch June 21st 21/06/11

quote:

Op dinsdag 21 juni 2011 14:38 schreef Perrin het volgende:
..en alweer raak bij Christchurch..

[..]

Earthquake Christchurch June 21st 21/06/11

(via: earthquake-report)

quote:

Op dinsdag 21 juni 2011 20:22 schreef rechtsedirecte het volgende:

[..]

op de NZ'se websiters en op de radio is er tot nu toe geen verslag van noemenswaardige schade

quote:

Op woensdag 22 juni 2011 12:20 schreef Perrin het volgende:

[..]

Idd, gelukkig maar.. hier een vrij gedetailleerde opsomming

quote:

Op donderdag 23 juni 2011 00:37 schreef barthol het volgende:
Japan M6.7 en Tsunamiwaarschuwing

[ afbeelding ]

quote:

Op woensdag 22 juni 2011 21:33 schreef rechtsedirecte het volgende:

[..]

enigzins off topic maar vandaag komt de NZ'se regering met een aankondiging over welke wijken er volledig tegen de vlakte gaan omdat er te veel beschadigd is door de liquifaction en de kans op herhaling duidelijk aanwezig...dus CHCH houdt zijn adem in

quote:

A very dangerous earthquake occurred in the Turkish Elazig province at 10:34 AM on June 23 2011. Due to the type of earthquake and the shallow depth, earthquake-report calls this earthquake “very dangerous”
May we kindly ask Turkish people who live in the epicenter area or have relatives in the area to share their information with earthquake-report.com. Please use the I Did Feel It form below.

FINAL UPDATE 12:26 UTC : A Ml5.4 earthquake struck at very shallow depth (5.7km).
It was located close to Elazig, Turkey but affected primarily the towns and villages around Elazığ’ın İçme Beldesi.

In the mud brick houses in the villages of Kartaldere, heavy damage has occurred.
Many other villages have also recorded major damage to these rural mud brick houses.
In the upper parts of the village – the minarets of mosques have been destroyed. Luckily, there was no loss of life.

Tents and other relief supplies will come soon. This is also a mining district.

In the earthquake epicenter, 2 people jumping out of a window were slightly injured.
A 3.2 magnitude aftershock was also felt.

quote:

Op vrijdag 24 juni 2011 05:53 schreef Michael-H het volgende:
7,3 Aardbeving + Tsunami waarschuwing in Alaska! Ik blijf erbij, San Fransisco is de volgende ...

quote:

Op donderdag 23 juni 2011 09:33 schreef Frutsel het volgende:

[..]

Ik denk dat eerder Chili of Alaska aan de beurt is voor een 8+

quote:

Op vrijdag 24 juni 2011 09:23 schreef Frutsel het volgende:

[..]

[..]

quote:

Op vrijdag 24 juni 2011 09:23 schreef Frutsel het volgende:

[..]

[..]

quote:

Op vrijdag 24 juni 2011 09:26 schreef Perrin het volgende:

[..]

Misschien Chili alvast ff waarschuwen

quote:

Op vrijdag 24 juni 2011 05:53 schreef Michael-H het volgende:
7,3 Aardbeving + Tsunami waarschuwing in Alaska! Ik blijf erbij, San Fransisco is de volgende ...

quote:

Twitter loopt vol met meldingen uit Noord-Oost Groningen. Lijkt toch wel een redelijk te zijn met meldingen van omgevallen spullen in huis en hevige trillingen, maar ja, ooggetuigenverslagen kunnen soms wat vertekenen.

quote:

Op maandag 27 juni 2011 18:39 schreef Martinovibes het volgende:
Zojuist een aardbeving in Groningen

http://www.rtvnoord.nl/home/pagina.asp?pid=101720

even een quote van weerwoord.be

[..]

quote:

Op maandag 27 juni 2011 19:00 schreef barthol het volgende:

[..]

M 2.7 las ik net

quote:

Study: California megaquake imminent
Man’s interference with Colorado River floods that used to regularly flow to the Salton Sea may have “stopped the clock” on a regular series of big earthquakes, setting the stage for a megaquake that could wreck Southern California, according to researchers at Scripps Institution of Oceanography.

A massive 7.5 or larger quake may be the result when the southern San Andreas Fault finally jolts back to life, causing waves of enormous destruction in the Inland Empire and Los Angeles basin, according to a study by Danny Brothers, Debi Kilb and Neal Driscoll published in the scientific journal Nature Geoscience. Kilb and Driscoll were set to detail the study during a morning press conference.

The team examined “displacement indicators preserved in pristine sedimentary deposits, … reconstructed their earthquake history and found evidence for coincident timing between flooding of the ancient Salton Sea and fault rupture,” according to a press release. “Rupture on these newly discovered ‘stepover’ faults has the potential to trigger large earthquakes on the southern San Andreas Fault.”

Driscoll, a geologist, said in a press release that “earthquake simulations reveal that shaking of large metropolitan areas such as Riverside and Los Angeles will be larger if the earthquake propagates from south to north — our research suggests that the Salton Sea stepover zone may provide a trigger for such a propagation direction.”

The seismically active southern end of the San Andreas Fault Zone lies under the Salton Sea, a wide depression whose bottom is about 250 feet below sea level. The area was regularly flooded by the Colorado River over the relatively recent millenia, a practice that ended 100 years ago when levees were built to force the Colorado to flow into the Sea of Cortez just south of
Yuma, Arizona.

Between that diversion, the construction of upstream dams near Las Vegas and regional droughts, the Colorado has not flooded into the Imperial Valley and Salton Sink, a dry lake bed that was converted to the Salton Sea in gigantic floods in 1906. The Colorado last flooded and reached the Sea of Cortez in 1982, but it now trickles into the sand about where the San Andreas
fault crosses the International Boundary 155 miles east of San Diego.

The new Scripps study shows that several heretofore unknown fingers of the San Andreas system sit beneath the Salton Sea, and the sand and dirt of the Imperial Valley. The faults let loose with magnitude 7.0 quakes or larger every 180 years until the early 20th century — the same time the the Colorado foods that had brought billions of pounds of water to the area were staunched.

The Scripps study suggests that the Colorado River flooding may have affected the timing of the smaller, stress-relieving faults.

“We’ve been baffled as to why the Southern San Andreas hasn’t gone. It’s been compared to a woman who is 15 months pregnant,” said seismologist Kilb, in a press release. “Now this paper offers one explanation why.”

Lead author Brothers, a researcher now at the USGS who conducted most of the research while a graduate student at Scripps, noted in the release that the research does not improve the ability to predict such a quake but suggests that heightened preparedness for a major quake immediately following smaller quakes in the stepover zone is warranted.

The study covers the area just north of the zone struck by the 7.2 magnitude Mexicali Easter Sunday quake of 2010. It killed two people in Mexico, and although it was felt as a nasty sway in the Inland Empire and Los Angeles, Orange and San Diego counties, damage was limited to Imperial County and the Baja California state capital, Mexicali.

Because the magnitude scale is logarithmic, a 7.5 quake is 1,000 times stronger than a 7.2 quake.

The new Scripps study includes maps that show the San Jacinto and southern San Andreas fault lines bracketing the Imperial and Coachella valleys, and a curlicue-shaped Imperial Fault beneath El Centro and Mexicali, home to more than 1 million people.

quote:

California Megaquake imminent
Like a steaming kettle with the top on, pressure is building beneath the surface of California that could unleash a monster earthquake at any time. That's according to a new study from the Scripps Institute of Oceanography.

Geologists say Southern California is long overdue for a huge earthquake that could unleash widespread damage.

It all comes down to the Salton Sea, which lies to the east of San Diego. The Salton Sea lies directly on the San Andreas Fault and covers more than 350 square miles.

A big earthquake has hit the lake bed about every 180 years. But when officials started damming the Colorado River to reduce floods downstream (including in the Salton Sea), the moderate earthquakes stopped for the Salton.

Sounds like a good thing, right? Not necessarily. Seismologists think the damming stopped moderate stress-relieving earthquakes on the Salton. Now, they fear the pressure is building and the area could be as many as 100 years overdue for a mega-quake quake, measuring 7.5 or larger.

This sobering news comes just as a new poll is released that details Californians fears about earthquakes and other natural disasters.

quote:

Volcanic eruption in Salton Sea is possible
Comments from the U.S. Geological Survey are sparking questions about a potential volcanic eruption in Imperial Valley that could bring clouds of ash to San Diego County.

"Most definitely… Volcanic activity is possible," said geologist Pat Abbott.

Abbott was part of a research group that collected footage of muddy pits and volcanic gasses about 100 miles east on the southern end of the Salton Sea. The area is the home of four buttes that are several hundred feet tall.

The buttes are small volcanoes with an explosive past. Miles below them is a pool of magma that is 15 miles wide. About 8,000 years ago, the buttes erupted, causing magma to flow which cooled into obsidian rock.

The damage from those eruptions was limited to the surrounding area, but if a major earthquake hit along the San Andreas Fault, geologists said there could be trouble.

"It really pumps energy into a freshly enlarged magma body," said Abbot. "That would be a worst-case scenario."

Unstable magma may find a path to the surface, which would result in the buttes erupting, oozing lava and spewing ash.

Though ash clouds like those seen in Iceland last year is a remote possibility, a geologist with the U.S. Geological Survey recently said in an article from the Palm Springs Desert Sun that "I would not anticipate an Iceland eruption, but we didn't anticipate Mount St. Helens either."

Even if an ash cloud is small, it could still wreak havoc and alter flight plans.

"The way the ash gets to San Diego is if we have Santa Ana winds," said Abbott.

Abbot said it is an unlikely scenario but one that is lurking beneath the surface.