Aardbevingen #10

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SUNAMI BULLETIN NUMBER 002
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0404Z 30 NOV 2010

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.

... TSUNAMI INFORMATION BULLETIN ...

THIS BULLETIN IS FOR INFORMATION ONLY.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
REPORTED BY THE JAPAN METEOROLOGICAL AGENCY.

ORIGIN TIME - 0325Z 30 NOV 2010
COORDINATES - 28.4 NORTH 139.3 EAST
DEPTH - 488 KM
LOCATION - BONIN ISLANDS JAPAN REGION
MAGNITUDE - 7.2

EVALUATION

BASED ON ALL AVAILABLE DATA A DESTRUCTIVE PACIFIC-WIDE TSUNAMI IS
NOT EXPECTED AND THERE IS NO TSUNAMI THREAT TO HAWAII. REPEAT. A
DESTRUCTIVE PACIFIC-WIDE TSUNAMI IS NOT EXPECTED AND THERE IS NO
TSUNAMI THREAT TO HAWAII.

NO TSUNAMI THREAT EXISTS FOR OTHER COASTAL AREAS IN THE PACIFIC
ALTHOUGH SOME OTHER AREAS MAY EXPERIENCE SMALL NON-DESTRUCTIVE
SEA LEVEL CHANGES LASTING UP TO SEVERAL HOURS.

THIS WILL BE THE FINAL BULLETIN ISSUED FOR THIS EVENT UNLESS
ADDITIONAL INFORMATION BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ALSO ISSUE TSUNAMI MESSAGES
FOR THIS EVENT TO COUNTRIES IN THE NORTHWEST PACIFIC AND SOUTH
CHINA SEA REGION. IN CASE OF CONFLICTING INFORMATION... THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.
...SP...

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Zwaarste beving in 18 jaar tijd nabij New York
Gisterochtend om 10u46 plaatselijke tijd vond in de buurt van New York een aardbeving van 3.8 op de schaal van Richter plaats, de zwaarste aardbeving die de regio in 18 jaar tijd trof. Er werd geen schade gemeld.

Volgens de Amerikaanse Geological Survey lag het epicentrum van de aardbeving in de Atlantische Oceaan, voor de kust van New Jersey en New York. Het incident vond te ver van het vasteland plaats om zware schade aan te richten.

Lage trilling
Toch was de aardbeving goed voelbaar in de regio: zo rapporteerden inwoners van Long Island een 'korte, lage trilling'. Ook Richard Perez-Pena, journalist bij The New York Times, voelde de gevolgen van de aardbeving. "Het was bijna nostalgisch, want ik bracht een groot deel van mijn leven in Los Angeles door, waar dergelijke incidenten schering en inslag zijn", lacht hij. "Het was onmiskenbaar een aardbeving. Omdat die hier echter zo ongewoon zijn, dacht ik eerst dat er een zware vrachtwagen door de straat reed, of dat mijn zoontje boven in zijn kamer op en neer aan het springen was.

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5.4 Magnitude Earthquake shakes Indonesia's supervolcanic lake, Lake Toba

Lake Toba is an Indonesian supervolcano with a lake on the crater, the supervolcano is 100 kilometres long and 35 kilometres wide. The deepest point of the volcano is 1,666ft. The supervolcano is located on the island of Sumatra that also suffered the worst in the 2004 earthquake. The lake on the volcano is the largest in Indonesia and the largest volcanic lake in the world.

Today Lake Toba suffered a 5.4 Magnitude earthquake, the earthquake was larger than normal tremors on the volcano. In history the eruption of Toba had global consequences, killing thousands. Once Lake Toba erupted and it led to a volcanic winter worldwide. (That theory is still debated today).

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Op woensdag 1 december 2010 11:40 schreef Frutsel het volgende:

[..]

[ afbeelding ]

Das een flinke voor zon gevaarlijke plek

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Op woensdag 1 december 2010 11:40 schreef Frutsel het volgende:

[..]

[ afbeelding ]

Das een flinke voor zon gevaarlijke plek

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Scientists discover new ways to predict possible earthquakes
A recent research provides new means for replicating how earth ruptures develop and possibly enabling prediction of future earthquakes.esearchers at the Hebrew University of Jerusalem, who have been examining what happens in a "model earthquake" in their laboratory, have discovered that basic assumptions about friction that have been accepted for hundreds of years are just wrong.

"The findings have a wide variety of implications for materials science and engineering and could help researchers understand how earthquakes occur and how severely they may develop along a fault line," said Jay Fineberg, the Max Born Professor of Natural Philosophy at the Racah Institute of Physics at the Hebrew University.

For centuries, physicists have thought that the amount of force needed to push an object in order to make it slide across a surface is determined by a number called the coefficient of friction, which is the ratio between the forces pushing sideways and pushing down (basically, how much the object weighs).

In carefully controlled lab experiments, Ben-David found that points along the contact surface could sustain up to five times as much sideways force as the coefficient of friction predicted, and the object still wouldn't budge.

Furthermore, the contacts don't all break at the same time. They, instead rupture one after another in a cadence that sets the rupture speed. These rapidly moving ruptures are close cousins of earthquakes, Fineberg said.

"An earthquake is the same system as in the Hebrew University experiments, just scaled up by factors of thousands. We can watch how these things unfold in the lab and measure all of the variables that might be actually relevant in a way that you could never observe under the earth," noted Fineberg.

This new understanding has the potential to provide unprecedented predictive power, estimating both the rupture mode and extent of a future earthquake.

The study has been published in an article in Science magazine

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Rare earthquake swarm near Brawley
BRAWLEY, Calif. -- A rare earthquake phenomenon called a "quake swarm" has set off more than 100 earthquakes in southern California, including Wednesday's 4.4 magnitude quake that hit east of San Diego.

The 7.2 earthquake on Easter Sunday created dramatic waves in a pool in Brawley, a small town about 130 miles east of San Diego.

Maria Molina Rocha, who has lived in Brawley for 50 years, told 10News, "You could hear the rumble before you felt the earthquake."

More than 130 of them have been recorded in Brawley since Monday with the strongest one Wednesday's 4.4 quake.

"It's an exciting place to be right now," said geologist Dr. Pat Abbott. "You don't go an hour without feeling an earthquake."

Abbott called the phenomenon a "swarm" that doesn't happen anywhere else in the United States.

"Brawley is a very famous area for earthquakes, known worldwide for all its earthquakes," said Abbott.

Abbott said the last swarm took place in 1975, when Brawley shook for four days with 339 quakes, with the strongest being a 4.7.

Brawley is located between the Imperial Fault and the San Andreas Fault and is surrounded by hot magma rocks that heat the water and absorb a lot of the volatile energy.

"So we're getting a different style of earthquakes, numerous small earthquakes in warm rock rather than saving up a lot of energy and having a more violent rupture," said Abbott.

Abbott said he doesn't believe this swarm of quakes will have much affect on the two nearby faults.

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Op donderdag 16 december 2010 12:05 schreef Frutsel het volgende:

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[url=http://www.nieuwslog.nl/2010/12/23/aardbeving-schrikt-regio-frankfurt-op/]
De regio’s rond de steden Frankfurt, Mainz en Wiesbaden zijn vannacht om 02:35 uur opgeschrikt door een ‘kleine’ aardbeving met een kracht van 3,5 op de schaal van Richter. De beving – die zo’n tien seconden duurde – voelde als een schok, waarna alles begon te trillen.

Volgens de politie in de Duitse plaatsen werden zij na de aardschok door veel mensen bezorgd opgebeld, al werd daarbij geen (persoonlijke) schade gemeld.

Het is niet overigens niet voor het eerst dat het gebied opgeschrikt werd door een aardbeving. Zo was er namelijk een halfjaar geleden ook een beving van 3,4 op de schaal van Richter.

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Op zaterdag 25 december 2010 14:58 schreef Roel_Jewel het volgende:
Aardbeving van 7.6 in Grote Oceaan. Tsunami-waarschuwing van kracht - http://goo.gl/vyB2h

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Magnitude 7.3
Date-Time

* Saturday, December 25, 2010 at 13:16:37 UTC
* Sunday, December 26, 2010 at 12:16:37 AM at epicenter
* Time of Earthquake in other Time Zones

Location 19.775°S, 167.895°E
Depth 12.3 km (7.6 miles)
Region VANUATU REGION
Distances 145 km (90 miles) W of Isangel, Tanna, Vanuatu
195 km (120 miles) N of Tadine, Loyalty Islands, New Caledonia
230 km (145 miles) S of PORT-VILA, Efate, Vanuatu
1740 km (1080 miles) ENE of BRISBANE, Queensland, Australia
Location Uncertainty horizontal +/- 7 km (4.3 miles); depth +/- 7.8 km (4.8 miles)
Parameters NST=173, Nph=173, Dmin=>999 km, Rmss=1.52 sec, Gp= 43°,
M-type=teleseismic moment magnitude (Mw), Version=7
Source

* USGS NEIC (WDCS-D)

Event ID usc0000usf

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Op zaterdag 25 december 2010 16:36 schreef Adelante het volgende:
Het is weer kerst!