British Expats - Earthquakes

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- - Earthquakes (https://britishexpats.com/forum/maple-leaf-98/earthquakes-708934/)

Quote:

Originally Posted by gryphea (Post 9240112)

I would think twice about living in the low lying areas (think Richmond). Very susceptible to liquefaction and failures due to amplification of motion at resonant frequencies similar to all the buildings.

Think Kobe, Mexico City and Alaska.

Yes high water table and silty sandy soils aren't a good combination in an earthquake.

I hadn't appreciated that the earthquake in Christchurch was actually an aftershock following a 7.1 shock in September last year centered 25 west of the city. Christchurch actually seems to be in a relatively high risk area.

http://en.wikipedia.org/wiki/File:Se...earthquake.jpg

It seems that the building where most were killed, the CTV building, had been assessed following the Canterbury earthquake and declared structurally safe. Whether there was an error in the assessment or whether the codes were just not adequate will become known after investigation no doubt.

Quote:

Originally Posted by jimf (Post 9244133)

The Christchurch quake was from a hither to undiscovered faultline. That map is from 2010, or after the faultline had been discovered.

Since the Sept quake there had been over 5,000 aftershocks in Chch until the big one of 6.3. Like anything with building it's a trade-off between making the building safe as possible vs expense.

Quote:

Originally Posted by Eastbound (Post 9235902)

Afterwards OH went out and bought a shed load of antispeptic wet wipes , enough loo roll to last forever , and a wind up radio, I think he feels hes now done his bit .

As a former inhabitant of the Gulf Coast with it's inherent hurricanes...I applaud :thumbsup: your OH with loading up on Wet Wipes! Has numerous uses..2 most importantly..wiping the ole arse and for those quick wash-ups of all the other smelly parts. :eek:

This site is interesting. It gives a very powerful impression of the before and after.

http://www.abc.net.au/news/events/ja...eforeafter.htm

Here is some more information the Earthquake on Sunday, March 20, 2011 at 04:20:39 UTC

Magnitude 4.4

Just off Vancouver Island.

http://earthquake.usgs.gov/earthquak...rld_canada.jpg

More at: http://earthquake.usgs.gov/earthquak...rld_canada.php

Yet another earthquake this time in Myanmar (Burma) 6.8 on the Richter scale.

http://www.cbc.ca/news/world/story/2...e-myanmar.html

Another one in the Ottawa Valley yesterday. Only a little one (3.5) but uncomfortably close to Chalk River.

Is there some law that says nuclear reactors must be built on fault lines?