Fire Earth

Earth is fighting to stay alive. Mass dieoffs, triggered by anthropogenic assault and fallout of planetary defense systems offsetting the impact, could begin anytime!

Posts Tagged ‘epicenter’

Another Deadly Earthquake Cluster Hits China

Posted by feww on August 31, 2008

China quake damages more than 100,000 homes, 25 dead

Revised figures in brackets are from a more recent report by AP.

BEIJING, Aug 31 (Reuters) – An earthquake that hit southwest China’s Sichuan and Yunnan provinces has killed [32] people [another 467 people injured], damaged or destroyed more than 258,000 homes and affected at least 600,000 residents [about 152,000 were evacuated,] state media said on Sunday.


Li Fucui, 47, cries in front of the debris of her collapsed house, which buried her brother-in-law, in Huili County, Sichuan Province. (Image: Reuters). Image may be subject to copyright.

The epicenter of Saturday’s quake, which struck around 4:30 p.m. (0730 GMT), was about 20 miles (30 km) southeast of Panzhihua, near Sichuan’s border with Yunnan, according to the U.S. Geological Survey. The quake was about 6 miles (10 km) deep.

The USGS put the magnitude of the quake at 5.7, while China’s official Xinhua news agency said it measured 6.1.

A 5.6-magnitude aftershock hit the same area 24 hours later, the USGS said on Sunday. There were no immediate reports of further damage.

Xinhua said Saturday’s quake had injured more than 250 people, and three more were missing.

It added that 656 schools had also been damaged and that heavy rain and difficult terrain were hampering rescue efforts, with mobile telephone communications patchy.

State television showed pictures of houses with large cracks in their sides, broken tiles on the road and people receiving medical attention under tents.

The government was rushing disaster relief to the affected areas, including thousands of tents and blankets and tonnes of food and water, Xinhua said.

Parts of Sichuan province were devastated by an earthquake that killed about 70,000 people in May. The province, known for its pandas and fiery cuisine, has struggled to rebuild after the disaster, which left 10 million people homeless. (Reporting by Ben Blanchard; Editing by Alex Richardson)

China should prepare for another massive earthquake in the Sichuan and Yunnan border area this winter!

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Powerful Earthquake Strikes Honshu, Japan

Posted by feww on June 14, 2008

Japan Quake Update [June 18, 2008]

  • Death toll: At least 10 people
  • Missing: 12 people
  • Injured: About 250 people
  • Evacuees: About 300 people spent Saturday night in evacuation centers

Recent quake history:

  • October 2004. A magnitude 6.8 earthquake struck Niigata prefecture in northern Japan, killing 65 people and injuring about 3,500 others.
  • January 1995. A Mw 6.8 [the Moment magnitude scale, USGS,] struck the city of Kobe in 1995, killing 6,434 people, many were injured and up to 500,000 people lost their homes.
  • September 1923. The worst earthquake in Japan, the Great Kantō earthquake, estimated to have had a magnitude between 7.9 and 8.4, claimed up to 142,000 lives. The biggest cause of death was the fires which spread rapidly due to high winds from a typhoon. In the worst single incident, up to 40,000 people who had fled their homes and businesses gathering in an Army Parade Ground in central Tokyo were incinerated by a firestorm. Tokyo, the port of Yokohama, neighboring prefectures of Chiba, Kanagawa, and Shizuoka were devastated by the quake. the quake caused the equivalent of about $200 billion in damage, more than 2.5% of Japan’s GDP that year.

6.8Mw Quake Occurred Near Akita, Japan

A Magnitude 6.8 Earthquake struck Japan’s Iwate prefecture, east of the main island of Honshu Saturday, June 14, 2008 at 08:43:46 AM local time. At least six people have been killed with 8 others missing and more than 200 injured.

The mainshock was followed by a cluster of aftershocks including at least 12 strong aftershocks measuring between 4.5 to 5.5Mw as of 07:11:57 PM (time at epicenter.)


A highway bridge lies in ruins in Ichinoseki city, Iwate Prefecture, June 14, 2008. A powerful earthquake rocked rural northern Japan on Saturday sparking huge landslides that blocked roads and isolated residents. REUTERS/KYODO.
Image may be subject to copyright. See FEWW Fair Use Notice!

The following details were reported by USGS:

  • Magnitude: 6.8
  • Date-Time: Friday, June 13, 2008 at 23:43:46 UTC
    Saturday, June 14, 2008 at 08:43:46 AM at epicenter
  • Location: 39.103°N, 140.668°E
  • Depth: 10 km
  • Region: EASTERN HONSHU, JAPAN
  • Distances: 80 km SSW of Morioka, Honshu, Japan
    85 km SE of Akita, Honshu, Japan
    95 km N of Sendai, Honshu, Japan
    390 km NNE of TOKYO, Japan


Image: USGS


Map of Japan. Source: USGS

The local news sources in Japan have reported the quake as 7.2 magnitude [presumably using the old, or the revised JMA magnitude scale.]

Tectonic Summary
The Mw 6.8 Honshu earthquake of June 13th 2008 occurred in a region of convergence between the Pacific Plate and the Okhotsk section of the North American Plate in northern Japan, where the Pacific plate is moving west-northwest with respect to North America at a rate of approximately 8.3 cm/yr. The hypocenter of the earthquake indicates shallow thrusting motion in the upper (Okhotsk) plate, above the subducting Pacific plate, which lies at approximately 80 km depth at this location.

The earthquake occurred in a region of upper-plate contraction, probably within the complicated tectonics of the Ou Backbone Range, known to have hosted several large earthquakes in historic times. The largest of these events occurred in 1896, approximately 70km north of the June 13th event, and killed over 200 people in the local area. [Source: USGS]

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No End Seen to China Quake Aftershocks

Posted by feww on May 16, 2008

Another major earthquake in the making?

China Earthquake: Large Cluster of Powerful Shocks!

  • Mainshock: 7.9 Magnitude – Monday, May 12, 2008 at 02:28:01 [time at epicenter]
  • Latest aftershock: 5.5 Magnitude – Friday, May 16, 2008 at 01:25:48 PM [time at epicenter]
  • Total number of major aftershocks: 59 [and continuing]

The last 4 aftershocks have strengthened in magnitude from 4.3 to 5.5 Mw. Is there another major shock in the making?

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees). (Caption: USGS)

Shadow zone

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core.

Did you know?

Through measuring how P and S waves travel through the earth and out the other side, a seismic wave shadow zone was discovered in about 1910. From the lack of S waves and a great slowing of the P wave velocity (by about 40%) it was deduced that the outer core is made of liquid. The shadow zone also defined the diameter of the core.

[If the outer core was not made of liquid, Earth could probably breakup into several pieces as a result of a v. large earthquake! FEWW]

Text and image: USGS.

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China Quake Casualties May Rise Sharply

Posted by feww on May 14, 2008

UPDATE # 3 – China Quake

Latest China Quake Statistics

Aftershocks: USGS has so far recorded a total of 41 aftershocks following the 7.9 magnitude mainshock that struck china’s Eastern Sichuan region. The latest quake, a 5.4 magnitude aftershock, struck 95 km NW of Chengdu, Sichuan, on Wednesday, May 14, 2008 at 10:54:38 AM [Time at epicenter.]

Casualties

[As reported by China’s Xinhua News Agency as of May 14, 2008 at 01:52:20 local time ]

  • Death toll: More than 12,000 victims
  • Injuries: 26,206 recorded cases
  • Buried in Debris: 9,404 victims are still buried in debris
  • Missing: 7,841 people remain missing


Photo taken on May 13, 2008 shows the scene of the earthquake-hit Beichuan County, about 160 kilometers northeast of the epicenter of Wenchuan County, southwest China’s Sichuan Province. Beichuan County is badly damaged in Monday’s quake, with great numbers of buildings collapsed and landslides around the county. (Xinhua Photo and caption)


Rescuers clear the rubbles at a elementary school in Liangping County of southwest China’s Chongqing Municipality, May 12, 2008. Based on the latest government statistics, there are 11 killed, including five pupils, and more than 2.13 million people affected in the earthquake in Chongqing. (Xinhua/Li Jinfa. Xinhua caption).

A rescuer tries to help a stranded student out of debris at Wudu Primary school in Hanwang Town, Mianzhu City, southwest China’s Sichuan Province, May 13, 2008. Teachers and students of the school are buried, the aftermath of Monday’s earthquake. (Xinhua Photo and caption)


A boy of Beichuan middle school wait for rescuers at the earthquake-hit Beichuan County, about 160 kilometers northeast of the epicenter of Wenchuan County, southwest China’s Sichuan Province, May 13, 2008. Beichuan County is badly damaged in Monday’s quake, with great numbers of buildings collapsed and landslides around the county. (Xinhua/Li Gang. Xinhua caption). Images may be subject to copyright. See FEWW Fair Use Notice.

More Photos

Government and Public Response:

About 20,000 soldiers and armed police are in the disaster areas in Sichuan Province and another 30,000 soldiers are joining the rescue operations, China’s Defense Ministry said.

Central government has allocated 860 million yuan (122.86 million U.S. dollars) as disaster relief to the areas affected by the earthquake cluster.

The public have donated 221.67 million yuan (31.66 million U.S. dollars) in cash and goods, according to the Ministry of Civil Affairs. (Source)

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