Chile’s Earthquake: 8.2

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The Chilean earthquake that struck on the 1st of April 95km NW of Iquique caused a lot of stir regarding building regulations. The 8.2 mega-thrust quake was underestimated by seismologists as they expected an earthquake of a larger magnitude of around 9Mw to rupture the plates along the coastline of Northern Chile near the border of Peru. Henceforth, they believe another earthquake of a larger scale will occur and cause a massive rupture within the surface of the plate. Until then it shall remain as a seismic gap.

The quake was felt in Bolivia and Peru and was at a depth of 20.1km. Several aftershocks with an average magnitude of 4Mw to 5Mw were felt and are currently still occurring nearly on a day to day basis. The mega-thrust quake caused a tsunami on the shores of Laquique, however that too was not as large as seismologists had expected it to be as mega-thrust earthquakes produce large Tsunamis i.e. The Alaskan Tsunami in 1964. The tsunami occurred the following day at night and gathered up a height of 6.9ft.

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The quake caused 7 deaths and left 200 hospitalized with 9 injured in Peru. 2500 homes were destroyed with 80,000 people displaced. Although the quake caused significant damage to many, it was said to not have caused as much damage as many had expected. Although a great number of houses were damaged many more were still standing all due to implemented building regulations.

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Since Chile lies on a subduction zone, where the Nazca plate lies below the South American plate, it is constantly prone to earthquakes of all sizes. Chile’s officials aware of this fact have legislated building laws which say that buildings are meant to be made out of reinforced concrete and steel of causes a resistance towards moving ground. John Bellini, geophysicist for the US Geological Survey talked about Chile’s earthquake to CNN saying, “They’re a seismically active region of the world and they are very good at implementing their building codes similar to California.” He added, “Because of that, you would see less damage than in other places that have poorer building codes …. that’s probably one of the reasons there haven’t been as many casualties as there could have been from a magnitude earthquake of this size.”

 

Click the following link to read more on Chile’s building laws

http://voxxi.com/2014/04/14/chilean-infrastructure-resist-earthquakes/

Chile being home to the largest earthquake that ever occurred in 1960 raises concern for neighboring countries of which have neighboring fault lines. Events like the mega-thrust earthquake that occurred early this April has got countries like the US, Japan and Nicaragua taking extra precaution to ensure the safety and security of their nation by implementing building rules and guidelines and continuing to prepare and improve preparedness programs for people to follow with hopes of reducing the fatality rate in the near future. Seismologists however believe that 8Mw earthquakes may eventually occur in Japan and Indonesia due to their mobile crustal deep moving plates. In the case of moving tectonic plates it is just a matter of when.

 

The following link shows ther number of earthquakes of which occurred in chile over the past 30 days

http://www.volcanodiscovery.com/earthquakes/chile.html

 

REFERENCES

http://en.wikipedia.org/wiki/2014_Iquique_earthquake

http://www.bbc.com/news/world-latin-america-26846984

http://www.scientificamerican.com/article/chiles-recent-earthquake-defied-expectations/

http://latino.foxnews.com/latino/news/2014/04/17/how-safe-is-california-earthquakes-in-chile-and-nicaragua-raise-questions-about/

http://edition.cnn.com/2014/04/02/world/americas/chile-earthquake/

http://voxxi.com/2014/04/14/chilean-infrastructure-resist-earthquakes/

http://uk.eonline.com/news/527503/8-2-earthquake-rocks-northern-coast-of-chile-celebs-tweet-thoughts-and-prayers

 

 

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New Zealand Earthquake Strikes Coast

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On the 21st of July New Zealand experienced a 6.5 magnitude earthquake. It hit at 17:09 [05:09 GMT] a depth of 6.3 miles and 35 miles [57km] off the coast south of Wellington. The earthquake was primarily reported as a 6.9 magnitude tremor and was eventually re-evaluated by the US Geological Survey.

There were no casualties or fatalities. Train schedules were disrupted, water pipes were burst, Wellington’s parliament building was damaged and power cuts were reported.

 

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Civilians working in the central city were advised to take the day off work. Celia Wade-Brown, Wellington’s mayor’s main aim is to keep the injuries to a minimum. New Zealand being located on the Pacific Ring of Fire makes it a hot spot for earthquakes and volcanic activity to occur. New Zealand experiences more than 14,000 earthquakes a year, where 20 go beyond the point of 5.0 magnitude.

 

 

 

REFERENCES:

“Quake rattles New Zealand, but no deaths reported”

{http://edition.cnn.com/2013/07/21/world/asia/new-zealand-earthquake]

“New Zealand earthquake damages Wellington parliament”

[http://www.bbc.co.uk/news/world-asia-23394409]

 

For more information about:

NEW ZEALAND EARTHQUAKES

http://www.geonet.org.nz/quakes/felt

http://en.wikipedia.org/wiki/Earthquakes_in_New_Zealand

http://www.stats.govt.nz/tools_and_services/earthquake-info-portal.aspx

http://mtaspiring.school.nz/Tephra/ThewhereandwhenofNZearthquakes.html

 

6.5 MAGNITUDE EARTHQUAKE [21st JULY 2013]

http://www.straitstimes.com/breaking-news/world/story/new-zealand-cleans-after-strong-65-quake-20130722

http://www.scoop.co.nz/stories/HL1307/S00155/scoop-news-full-coverage-of-the-21-july-earthquake.htm

http://www.minedu.govt.nz/theMinistry/EmergencyManagement/EmergencyEvents/SeddonEarthquake.aspx