Powerful aftershock shakes the Christchurch area again

Lyttelton port in 2004.

The port of Lyttelton - Image via Wikipedia

Earthquake Report comment :
A powerful aftershock occurred at 11:32 am of Tuesday October 19.
The epicenter was located only 1 km from Lansdowne,  5 km south of Halswell and 10 km west of Lyttelton
The hypocenter was at a very shallow depth of 9 km.
This aftershock proves once more that the greater Christchurch area is till at risk for major aftershocks. Until now only 5+ magnitudes have been reached, but Magnitudes of +6 are certainly still possible. Such aftershocks can be very damaging at shallow depths.
Local media report that products tumbled from shelves and that many buildings have been evacuated after the shock.
Other reports mention bricks falling in the city.
The Lyttelton tunnel was closed after the quake but had since reopened. The port was operating as usual.
The quake scared people a lot, but fortunately no major damage or injuries were reported.
A specific phenomena of this aftershock was once again “liquefaction’ in some areas.
Read the full report of this aftershock in the local edition of  “the press” Christchurch

Most important Earthquake Data:
Magnitude : M 5.0
Tuesday, October 19 2010 at 11:32 am (local time)
Depth (Hypocenter) : 9 km
Geo-location(s) :
10 km west of Lyttelton
10 km south-west of Christchurch

Links to important maps
GNS Science Did You Feel It Map
Google satellite map of the area showing the kind of terrain the earthquake took place
GNS Science  Shaking map
USGS historic earthquakes map
Live Seismograph

QuakeSOS has been developed to help actively people who are caught in an earthquake + delivers "Earthquake Report" information on your iPhoneQuakeSOS is a FREE iPhone application developed by Armand Vervaeck, the creator and main contributor to Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is constantly feeding the users with “Earthquake Report” news. Together with your own family and friends, QuakeSOS will be your closest earthquake friend.

Strong aftershock shakes Christchurch, New Zealand

Akaroa, New Zealand

Akaroa peninsula - Image via Wikipedia

Earthquake Report comment :
The aftershock had a Magnitude of 5.2 following USGS and 5.0 following GNS Science.
Epicenter was at 30 km east of Darfield and near the original epicenter of the massive 7.1 earthquake who struck the area at September 4. Since that data many hunderds of aftershocks have rattled the greater Christchurch area (more than 1,000 if we count also the very small ones).
Very near the Akaroa peninsula.
Today’s aftershock was among the most powerful so far.
1640 people reported so far that they had felt the earthquake.
Most of them experienced a Modified Marcalli of IV (moderate shaking).
166 experienced a strong shaking (Mercalli V).
Today’s aftershock was the strongest since 4 weeks. These aftershocks can go on for many more months. So far, no damage or injuries have been reported.

Most important Earthquake Data:
Magnitude : 5.2 USGS
Monday, October 04, 2010 at 10:21:50 PM (22:21) at epicenter
Depth (Hypocenter) : 9.8 km
Geo-location(s) :
20 km (10 miles) W of Christchurch, New Zealand
30 km east of Darfield

Links to important maps
GNS Science  Did You Feel It Map
Google satellite map of the area showing the kind of terrain the earthquake took place
USGS Shaking map
USGS historic earthquakes map
Geonet LIVE seismograph recording of this earthquake (valid for another 20 hours after publication of this article)

QuakeSOS has been developed to help actively people who are caught in an earthquake + delivers "Earthquake Report" information on your iPhoneQuakeSOS is a FREE iPhone application developed by Armand Vervaeck, the creator and main contributor to Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is constantly feeding the users with “Earthquake Report” news. Together with your own family and friends, QuakeSOS will be your closest earthquake friend.

Christchurch earthquake : internationally forgottten, but still shaking constantly

Although the current aftershocks are not mentioned anymore in the USGS and EMSC charts, the inhabitants of Christchurch are still living under the constant threat of a major aftershock and are experiencing many moderate earthquakes every couple of hours.
People who want to see the strength of the quakes can consult them here.
An even more better view can be seen in our dynamic seismograph mapping by the GNS Science, the New Zealand Authority who is following carefully all tectonic activity.
The Magnitude aspect can reveal how powerful an earthquake is, but every earthquake will be felt differently.
The duration of the shaking and a number of additional factors are as important as the Magnitude. The map hereunder is showing very well that 2 aftershocks are lasting a lot longer than all others.
The most powerful aftershocks are mostly located in the Darfield area.

Seismograph cutout of aftershocks on September 12

Christchurch earthquake : a powerful 5.1 aftershock and more news

Update September 7 – 23:22 UTC (September 8 – 11:22 local time) :
16 hours of relative calm, but the last 8 hours the people of Christchurch have experienced an increasing number of aftershocks.
11 aftershocks of Magnitude 3.0 or more since midnight local time.

Courtesy The Star - click on this picture for a link to the article

The most powerful aftershock measured 5.1  and was very near to the city (10 km North-West of Diamond Harbor). Check our LIVE AFTERSHOCKS PAGE to see this aftershock on the seismograph
Some parts of the city were again without power, alarms started ringing, some traffic lights did not work, etc
The sharp aftershock traumatized the people even more after again a sleepless night.
Emergency services did report more damage to unstable buildings

* People of North Otago will rally in support of the earthquake victims
* Management of the 2 biggest supermarkets in New Zealand with branches in Canterbury, made an appeal to their clients not to stockpile.
* Prime Minister John Key has toured the damaged Canterbury areas who where most hit by the earthquake
* The Press has made an overview page with the latest Canterbury service information
* Durham St Methodist Church, Christchurch’s first stone church has suffered a terrible blow, Methodist leader Mary Caygill says
* State of Emergency prolonged for another 7 days
* Lyttelton tunnel is currently checked for structural damage and maybe open again this afternoon
* The Queen has today asked the New Zealand prime minister to send her good wishes to those affected by and helping with the aftermath of Saturday’s earthquake in Christchurch,” a Buckingham Palace spokesman said overnight.

Other pages we published on this earthquake (most recent are ranked above)

Christchurch massive earthquake : more news from the quake area …

New Zealand earthquake : the best video’s of the earthquake

New Zealand Christchurch hit by a Magnitude 7.0 earthquake (part 2)

Helicopter footage of the Christchurch earthquake damage

Powerful aftershock rattles Christchurch and Canterbury, New Zealand

Understanding the massive 7.0 Christchurch Earthquake

New Zealand Christchurch hit by a Magnitude 7.0 earthquake

Check our LIVE AFTERSHOCKS PAGE for more information.

Christchurch Massive Earthquake : our preferred websites list

Earthquake-report.com focuses on earthquakes in the entire world and has to limit his news reporting to short important issues.
We are however aware that some of our readers have friends and relatives in the greater epicenter area.
They are searching possibly every single detail about the ongoing events.
Especially to serve these readers (mostly from overseas) Earthquake-Report.com publishes the best sources which we discovered the last few days.
We encourage our readers to comment on eventual other great LOCAL sites who are reporting in full about the current Christchurch – Canterbury events.

The STAR, at home in Canterbury
Local Canterbury newspaper focusing on the small but important stories

New Zealand Herald
Major New Zealand newspaper with very good reports

The Press Christchurch
One of the best websites in the country with very  good local divisions

The Timaru Herald
South Canterbury newspaper with very good news gathering

Enjoy the articles of these great websites and do not forget our existence 😉

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