[Talk-ca] Fwd: [OSM-talk] Earthquake in Christchurch NZ last weekend

[Sam Vekemans]

fyi, for those not on the main talk list.
Many parts of Canada is on a fault line.
As well as prone to natural earth corrections. ... so there is also a
sence of urgency to mapping, as collaborative maps are needed at all
levels.
And there isnt time to debate about licences, when people just need
the latest map data.


Back to mapping,
Sam

---------- Forwarded message ----------
From: Philip Shipley <phil at barby.net>
Date: Fri, 10 Sep 2010 16:06:21 +1200
Subject: [OSM-talk]  Earthquake in Christchurch NZ last weekend
To: talk <talk at openstreetmap.org>

As a recent migrant to the UK to Christchurch I can say it was a
pretty scary experience and thank providence that it was at 4.35am and
not 4.35pm!!!

To characterise the damage as widespread is a little media spin -
there is some serious damage, especially to historical, brick
buildings in the centre and surrounding suburbs and I suppose it is
over a wide area, however I would estimate that 99.9% of the city is
fine.  What is interesting is that you can be on one street and
everything is normal , you turn the corner and it looks like a bomb
site for 100 metres then it is normal again.

Kaiapoi, a small town of 12,000 just north of Christchurch, has not
fared so well with over 400 homes condemned. Yet Woodend a few km's
further up the road is virtually untouched.

That I think has been the biggest surprise to the people I have spoken
to - the small pockets of carnage in an otherwise unscathed
environment.

I sure that many papers and thesis will be written on why this
phenomenon occurred as well as some serious re-evaluation on type of
soil/bedrock that it will be permissible to build on.  The event
bought to mind a childhood song "The Wise Man Built His House Upon the
Rocks".  Building on sand in a known earthquake zone was perhaps a
misjudgement.  The word of the week is liquefaction - there is a great
video here a 1964 that shows how the soil just turns to liquid, just
as it did in Kaiapoi

http://www.youtube.com/watch?v=KLZFlnND0hA

Anyway here is a great site that shows an time-line animation of the
quake and aftershocks

http://www.christchurchquakemap.co.nz/

There have been around 400 aftershocks so far, mostly unfelt, the
bigger ones are listed here

http://lists.geonet.org.nz/pipermail/eqnews/2010-September/

Phil

> Message: 9
> Date: Thu, 9 Sep 2010 16:53:01 +0900
> From: Andrew Errington <a.errington at lancaster.ac.uk>
> To: talk at openstreetmap.org
> Subject: [OSM-talk] Earthquake in Christchurch NZ last weekend
> Message-ID: <201009091653.02041.a.errington at lancaster.ac.uk>
> Content-Type: text/plain;  charset="us-ascii"
>
> In case anyone missed reading about it, there was a 7.1 magnitude earthquake
> in Christchurch, New Zealand at the weekend.  Miraculously no-one was killed,
> despite widespread damage.  This was due mainly to the fact that it happened
> in the early morning, so people were asleep in their homes.  If they had been
> walking or driving through the city when it happened I am sure there would
> have been many injuries and deaths (and more news coverage).
>
> Anyway, a helpful individual has made this:
>
> http://www.mapquake.co.nz/
>
> And someone from ESRI (I think) in NZ has made this:
>
> http://s1.demos.eaglegis.co.nz/Flex/earthquake-christchurch
>
> I cannot find anything based on OSM, although I am not suggesting that someone
> should do this, since it seems that is already covered.  It's interesting,
> however, to see the UIs that are being used, and also how willing the general
> public is to contribute useful information to such a site.
>
> My questions are, is someone or some group using OSM as the data source for
> similar public information services?  Are there tools for people to make such
> webpages easily using OSM?  Is OSM ready for this?
>
> I apologise if this topic has been discussed in depth elsewhere.
>
> Best wishes,
>
> Andrew
>
>

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