7.4 Earthquake near Christchurch, New Zealand

Quake of 7.4 hits New Zealand near Christchurch


By Gyles Beckford
WELLINGTON | Fri Sep 3, 2010 4:15pm EDT
(Reuters) - A major earthquake of 7.4 magnitude hit New Zealand, 30 km (20 miles) west of Christchurch early on Saturday morning, causing no immediate reports of casualties but widespread damage, authorities said.

The quake, which had a depth of 33 kms (20.5 miles), struck around 4.35 a.m. local time (12:35 p.m. EDT Friday) and was felt throughout much of the South Island and southern parts of the North Island, but did not trigger a tsunami.

Police in Christchurch, New Zealand's second-largest city with a population of about 350,000 people, closed the central business district of the city, with building facades falling into streets, crushing cars and blocking roads.

"There's a lot of damage that I've been able to observe in the central city area, mainly of the old brick and masonry buildings, a number of those have got walls that have fallen into the street," Christchurch mayor Bob Parker told Radio New Zealand.

Police said there were widespread reports of houses being affected with broken windows, items thrown off shelves, toppled chimneys, with power and water services disrupted.

Officials were checking how severe the damage was in rural areas, closer to the epicenter, west of the city.

Ray O'Donnell, owner of a hotel in Darfield, a small farming community around 20 kms (12 miles) west of Christchurch, said large cracks had appeared in rural roads near the epicenter.

GNS Science, the New Zealand government seismological agency, gave the magnitude as 7.4. The U.S. Geological Survey initially reported it at 7.4 but later revised its figure to 7.0.

The city's airport was shut as a precaution as the runway and facilities were checked, and the railway network and bridges throughout the region were also being checked for damage.

The quake was felt as a long rolling motion lasting up to 40 seconds. The area was continuing to feel aftershocks as strong as magnitude 4.9.

"No destructive widespread tsunami threat exists based on historical earthquake and tsunami data," the Pacific Tsunami Warning Center said.

New Zealand scientists record around 14,000 earthquakes a year, of which around 20 top magnitude 5.0.

The last fatal earthquake in the geologically active country, caught between the Pacific and Indo-Australian tectonic plates, was in 1968 when an earthquake measuring 7.1 killed three people on the South Island's West Coast.

(Editing by Peter Graff)

http://www.reuters.com (posted at about 12:45 PST)

ALSO SEE:
http://www.youtube.com/watch?v=dk6-U1oeN9A
 
Thanks Aidylsun B.,

Already up on SOTT. USGS states the magnitude as 7.0 while New Zealand's GeoNet states the magnitude at 7.4. :)

http://www.sott.net/articles/show/214654-New-Zealand-Earthquake-Magnitude-7-0-South-Island
 
Thank you! The first report I saw was 7.0 but then after searching on-line I saw 7.4. I'm sure there will be more reports as details become available.
 
Hi there,

Most of the reports say that the position of NZ has changed by at least 3.5 Metres or 11 Feet. I never really understood how the repositioning of the Earth could take place during the lifetime of the planet but the fact that these earthquakes are reported to make the planet wobble about on it's axis help me understand how it might be possible. Where I live in Australia I've witnessed some of the extremes that weather has to offer but nothing seismic because we aren't near an incredibly active zone however It's apparent to me now how substantial and real the earth changes are, and I think that these earth quakes exemplify in a tangible manner of how much the physical planet is affected. I'm just glad that fatalities and causalities are at a minimum :)
 

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