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Archive for the ‘large earthquakes’ Category

Powerful Quake Strikes Gulf of California

Posted by feww on April 12, 2012

M6.9 Earthquake Rattles Gulf of California

The quake followed a strong foreshock measuring 6.2Mw which occurred 9 minuets earlier.

Earthquake Location Map. Source: USGS/EHP. Map enhanced by FIRE-EARTH

Earthquake Details

  • Magnitude: 6.9
  • Date-Time: Thursday, April 12, 2012 at 07:15:48 UTC
  • Location: 28.790°N, 113.142°W
  • Depth: 10.3 km (6.4 miles)
  • Distances
    • 133 km (82 miles) NE of Guerrero Negro, Baja Calif. Sur, Mexico
    • 179 km (111 miles) NNW of Santa Rosalia, Baja Calif. Sur, Mexico
    • 215 km (133 miles) W of Hermosillo, Sonora, Mexico
    • 526 km (326 miles) SSW of PHOENIX, Arizona
  • Location Uncertaint: horizontal +/- 18.1 km (11.2 miles); depth +/- 4.1 km (2.5 miles)
  • Source:  USGS NEIC (WDCS-D)

Other Significant Quakes

  • Magnitude 6.5, MICHOACAN, Mexico;  Wednesday, April 11, 2012 at 22:55:10 UTC; 18.272°N, 102.732°W; depth of 20 km (12.4 miles);  USGS NEIC.
  • Magnitude 5.9, OFF THE COAST OF OREGON; Wednesday, April 11, 2012 at 22:41:47 UTC; 43.593°N, 127.557°W; 271 km (168 miles) W of Coos Bay, Oregon; depth of 10.2 km (6.3 miles); USGS NEIC.

Related Links

Global Disasters: Links, Forecasts and Background

Posted in Earthquakes, earthquakes 2012, global earthquakes, large earthquakes, Powerful earthquakes, Significant Earthquakes | Tagged: , , , , | Leave a Comment »

Powerful Quake Strikes Vladivostok Region

Posted by feww on February 18, 2010

Earthquake measuring up to 7.0Mw strikes near China-Russia-North Korea border area

A powerful quake measuring up to magnitude 7.0 Struck  near China-Russia-North Korea border region (42.7ºN131.1ºE) on Thursday, February 18, 2010 at 01:13UTC, at a depth of about 590 km.

The quake was felt as far east as the eastern coast of Honshu, east of Tokyo, Japan’s Meteorological Agency (JMA) reported.

The event was the 12th earthquake measuring between 7.0 and 7.8 to strike the region since 1900, and the fourth such event since 1990, according to USGS earthquake data.

The quake epicenter appears to be located in sparsely populated Chinese territory. It too deep to cause any tsunami, or major damage to the nearest major cities of Vladivostok, Russia,  and Chongjin, North Korea. As of posting, there was no report of injuries as a result of this event.

Earthquake Location (USGS/EHP)

Political Map of China. Click images to enlarge.

Population Exposure:  Estimated Population Exposed to Earthquake Shaking (PDF)

Earthquake Details:

  • Magnitude as reported by USGS/EHP: 6.9 [Fire Earth estimate of the maximum magnitude: 7.0]
  • Date-Time: Thursday, February 18, 2010 at 01:13:18 UTC
  • Thursday, February 18, 2010 at 10:13:18 AM at epicenter
  • Location:  JMA (42.7ºN131.1ºE); USGS (42.581°N, 130.537°E)
  • Depth:  JMA (590km);  USGS (573.8 km or 356.6 miles)
  • Distances:
    • 90 km (55 miles) ESE of Yanji, Jilin, China
    • 100 km (60 miles) NNE of Chongjin, North Korea
    • 1110 km (690 miles) NW of TOKYO, Japan
    • 1215 km (760 miles) ENE of BEIJING, Beijing, China
  • Location Uncertainty: horizontal +/- 4.4 km (2.7 miles); depth +/- 6.7 km (4.2 miles)
  • Source: JMA; USGS NEIC (WDCS-D)
  • USGS Event ID: us2010swaf

Seismic Hazard Map (USGS/EHP)

Click image to enlarge.

Related Links:

Posted in Chongjin, earthquake, large earthquakes, North Korea, North Korea quake | Tagged: , , , , , , , | Leave a Comment »

Volcanic Explosions Could Split More Than Africa

Posted by feww on November 4, 2009

Volcanic Explosions and Large Earthquakes Could Splinter Several Continents, Countries

Large earthquakes and volcanic explosions could split Arabian Plate, North American Plate, Pacific Plate [in multiple places] and shatter Filipino Plate.

Erta Ale, an active shield volcano located in the Afar Region [northeastern] of Ethiopia in the Danakil Desert, is Ethiopia’s only active volcano.License: cc-by-sa-2.0. Credit: posted to Flickr by filippo_jean.

Erta Ale is part of the so-called Afar Triangle, a highly active volcanic region which includes Dabbahu Volcano, located in the remote Afar Region of Ethiopia. Dabbahu eruption in 2005 created a large fissure in the ground, called the Dabbahu fissure. The volcano is the hottest place on Earth’s  surface.

20010115080236 - sml
Dabbahu Fissure. Image JPL/NASA.

Leading to Dabbahu’s only known eruption in recorded history, which formed a 500 meter long fissure and a 30 meter wide pumice cone at the fissure’s southern end, on September 26, 2005 the ground swelled as a cluster of more than 130 tremors shook the area near the volcano.

dabbahu fissure
Dabbahu Fissure, along the Somalian Plate, Great Rift Valley (Boina/Afar, Danakil desert, Ethiopia). A ground rupture created during the September 2005 rifting event. Photo: Tony Philpotts/ AP. Image may be subject to copyright.

Researchers say volcanic activity could split the African continent in two, a claim supported by a recent ground rupture that appeared in northeastern Ethiopia.

The 60-kilometre (35-mile) split in the desolate Afar region, which was the result of two volcanic eruptions in September 2005 [Dabbahu Episode, Afar,]  has enabled scientists to further examine the earth’s tectonic movements, said a report published in the Geophysical Research Letters.

“The significance of the finding is that a huge magnetic deformation can happen within a few days like in oceans,” Atalay Arefe, an Ethiopia-based university professor who was part of the study, told AFP in an interview.

Faults and fissures that normally occur on the ocean floor largely contribute to the continents breaking off  and moving away [spreading] from each other, in the same way African continent broke away from South American plate 100 million years ago.

“Normally, such phenomena happens beneath the ocean, which is inaccessible, expensive and very difficult to make experiments. But in Afar, it’s quite a natural laboratory for us to carry those out,” Atalay said.

Atalay, who was part of an international group of scientists who have been undertaking studies since the eruptions, said the event indicated what was likely to happen in the mainland.

“The ocean’s formation is happening slowly, likely to take a few million years. It will stretch from the Afar depression (straddling Ethiopia, Eritrea and Djibouti) down to Mozambique,” he said.

At 120 meter below sea level, Ethiopia’s Afar Depression is one of the lowest and hottest places on Earth, famous for its salt mines.

Related Links:

Posted in Arabian Plate, filipino plate, Gulf of aden rift, large earthquakes, Nubian Plate, red sea drift, Somalian plate, Volcanic Explosions | Tagged: , , , , , , | 5 Comments »

Earth undergoing significant geophysical disturbances

Posted by feww on October 8, 2009

More Powerful Quakes Strike Vanuatu, Santa Cruz Islands

FEWW Moderators believe Earth may be undergoing significant geophysical disturbances with cataclysmic consequences for humans

[The disturbances and disasters that spawn from them are enhanced by human activity.]

Powerful earthquake measuring up to 7.3Mw strikes Vanuatu, Santa Cruz Islands, the fifth shock in less than 11 hrs

Since Wednesday, October 07, 2009 at 22:03 UTC, about 11 hours from time of posting, a total of 19 shocks have struck Vanuatu and Santa Cruz Islands Regions. The Mainshock which measured up to 8.2 Mw struck Vanuatu region, followed by 18 additional shocks in the two neighboring regions.

The most powerful of these shocks measured up to 8.1, 7.6 , 7.0 and 7.3 Mw. [Source of initial data: USGS/EHP; maximum quake magnitudes estimated by FEWW.]

10-degree Map Centered at 15°S,165°E

Vanuatu - 2
Earthquake Location Map. Source: USGS/EHP. Enhanced by FEWW

Related Links:

Recent Human Enhanced Disasters Asia-Pacific

See also:

Posted in earthquake forecast, Earthquakes, large earthquakes, significant geophysical disturbances | Tagged: , , , , , | 14 Comments »

Powerful Earthquake Strikes Southern Sumatra, Indonesia

Posted by feww on September 30, 2009

More Megaquakes May Strike PRF Anytime

Magnitude 7.9 earthquake strikes southern Sumatra, Indonesia

Magnitude 7.9 earthquake struck southern Sumatra, Indonesia, 50 km (30 miles) WNW of Padang, at a depth  of about 85 km on Wednesday, September 30, 2009 at 10:16 UTC, USGS/EHP reported.

Only hours ago, having briefly analyzed details of the Samoan earthquake, FEWW had foretasted that up to 3 more powerful quakes could strike the Pacific Ring of Fire in 2009.

Four weeks ago a deadly earthquake measuring  7.3 to 7.6 Mw struck off the coast of Java, Indonesia, killing more than 80 people and injuring at least another 1,250.

Tsunami Warning

Pacific Tsunami Warning Center (NOAA) has issued a tsunami warning based on the size and location of the earthquake for countries bordering Indian Ocean: Indonesia, India, Thailand and Malaysia.

Damage Report

“People are panicking. They are running out of the buildings… There are many collapsed buildings,” an eye-witness in Padang told a local TV station.

“Hundreds of houses have been damaged along the road. There are some fires, bridges are cut and there is extreme panic here maybe because water pipes are broken and there is flooding in the streets,” another witness told Reuters.

“Hundreds of houses have been damaged along the road,” another eye-witness in Padang said.

“There are some fires, bridges are cut and there is extreme panic here maybe because water pipes are broken and there is flooding in the streets.”

Padang has a population of just under 1,000,000 people. There were no reports of casualties as of posting; however, given that so many buildings have collapsed, it’s more than likely that many people would have been killed or injured.

According to a local report, power and phone lines are down in Pandang and several other parts of Indonesia.

The mainshock was followed by a strong aftershock measuring 6.0  GFZ Potsdam/ Earthquake Bulletin reported. More strong aftershocks are highly probable.

10-degree Map Centered at 0°N,100°E

Southern Sumatara - 30 September 2009
Earthquake Location Map.

GFZ Potsdam – Earthquake Bulletin
Region:     Southern Sumatra, Indonesia
Time:     2009-09-30 10:16:10.4 UTC
Magnitude:     7.8
Epicenter:     99.87°E   0.80°S
Depth:     84 km
Status:     manually revised

Earthquake Details (according to USGS)

  • Magnitude: 7.9
  • Date-Time:
    • Wednesday, September 30, 2009 at 10:16:10 UTC
    • Wednesday, September 30, 2009 at 05:16:10 PM at epicenter
  • Location: 0.797°S, 99.925°E
  • Depth: 85 km (52.8 miles)

    • 50 km (30 miles) WNW of Padang, Sumatra, Indonesia
    • 225 km (140 miles) SW of Pekanbaru, Sumatra, Indonesia
    • 475 km (295 miles) SSW of KUALA LUMPUR, Malaysia
    • 960 km (600 miles) NW of JAKARTA, Java, Indonesia
  • Location Uncertainty: horizontal +/- 10.6 km (6.6 miles); depth +/- 16.1 km (10.0 miles)
    Parameters:  NST= 44, Nph= 44, Dmin=523.2 km, Rmss=1.44 sec, Gp= 47°,   M-type=teleseismic moment magnitude (Mw), Version=7
  • Source: USGS NEIC (WDCS-D)
  • Event ID: us2009mebz

Related Links:

Posted in Indian Ocean tsunami, Indonesia tsunami, large earthquakes, megaquakes, sumatra tsunami | Tagged: , , , , , , | 5 Comments »

FEWW Earthquake WARNING: JAPAN Region

Posted by feww on September 4, 2009

FEWW Earthquake Warning:

Large Earthquake Forecast in Japan Region

A large earthquake east of Honshu, Japan Region,  may be imminent (in the next few hours).

10-degree Map Centered at 35°N,140°E

latest quakes in Japan 04-09-09 -- 02-30-29 UTC
Location Map of latest earthquakes in Japan. Source: USGS

Related Links:

Posted in earthquake warning Honshu, large earthquakes, Tokyo Bay earthquake, tokyo earthquake | Tagged: , , , | 3 Comments »