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New Zealand earthquake: Tsunami follows powerful tremor
131–140 of 163 posts
Re: New Zealand earthquake: Tsunami follows powerful tremor
#132Currently in Wellington. Was fucking shaky, seriously thought the building was about to collapse. This was ~500 km from the epicenter. We were evacuated and let back in. All the planning in the world doesn't prepare you for the real thing, the first thing you're meant to do is keep calm, and I sure as hell didn't. I sprinted right the fuck out of my apartment building, I have 4 levels above me, hiding under a table w…
You're 500km north of epicentre and felt that. Im 150km south of epicentre and felt nothing.
Wellington isn't 500km away :)
It looks like the quoted epicentre was just the start point of the rupture that headed off to the northeast. Which explains why the shaking seemed worse to the north and why so much activity seems to be recorded from the Seddon area again:
http://earthquake.usgs.gov/earthquakes/eventpage/us1000778i#...
In Wellington it seemed like the first half was just a gentle swaying before it really kicked in for the second half. That was probably the rupture moving closer.
I found this really interesting: The USGS talks about quakes of this magnitude usually have a wide scale area of slippage eg they've modelled 200x60 km for this one:
http://earthquake.usgs.gov/earthquakes/eventpage/us1000778i#... http://earthquake.usgs.gov/earthquakes/eventpage/us1000778i#...
Re: New Zealand earthquake: Tsunami follows powerful tremor
#133Anyone know what the lights were about? http://www.newshub.co.nz/nznews/strange-lights-during-earthq... or is it a hoax. I'm in Palmerston North a long way away, but that was the biggest quake I've felt.
link to video https://www.youtube.com/watch?v=1hIQaJg3lVM
Yeah, that looks like transformers popping (falling off poles, etc).
Re: New Zealand earthquake: Tsunami follows powerful tremor
#134When I was a kid, the 1992 Big Bear Landers earthquake hit in Southern California. That was a 7.6 if I recall. So I can relate to what those in NZ are feeling. Our rock chimney collapsed and fell off the house, nearly crushing my mom who was outside at the time.
Re: New Zealand earthquake: Tsunami follows powerful tremor
#135Magnitude 7.5 earthquake. For reference, I felt this in Hamilton, a bit under 1,000 KM away. First earthquake I have ever felt. Hamilton never, ever gets earthquakes. Nevertheless, NZ infrastructure is built to withstand this sort of stuff. Only $100m-1b economic damage is expected, no casualties expected.
> Nevertheless, NZ infrastructure is built to withstand this sort of stuff
Building maybe. But our main transportation routes often have little redundancy and go through some potentially hazardous areas. State Highway 1 down the Kaikoura coast is a great example. Hopefully Lewis Pass survived ok.
Re: New Zealand earthquake: Tsunami follows powerful tremor
#136Earlier quoted context omitted.
Yeah Wellington has always taken it seriously, I remember the building where I worked in 2002 had a sticker on it by the council saying the building wasn't earthquake safe. The buildings here are much more earthquake safe than Christchurch but also the damage potential is much higher.
Great. Do you have a pic of the sticker? I'm moving to Umbria, Italy...
http://www.radionz.co.nz/assets/news/18382/eight_col_xlarge_...
That's the yellow sticker that buildings in Wellington get if they're unsafe but still usable.
Re: New Zealand earthquake: Tsunami follows powerful tremor
#137Does anyone know if there is any special effort to construct buildings that can withstand reasonable earthquakes in New Zealand? Christchurch seems particularly prone to quakes in New Zealand. I hope the people of New Zealand are safe.
We have fairly comprehensive building regulations for all new housing. Our new house plans were rejected because we didn't specify strong enough straps to fix the hot water cylinder to the wall. The straps they insisted on would withstand 10 times the force experienced in the Christchurch earthquake, which was one of the most violent in terms of acceleration ever. When the big one happens, our house may be destroyed but by god the hot water cylinder will still be attached to the wall!
New Zealand in general is very quake-prone - our nickname in Victorian times was "the shaky isles". In fact our country owes it's existence to a particularly nasty intersection between the Australian and Pacific plates, with the Aussie plate slipping under the Pacific in the South Island, and vice versa in the North Island. You might think that the bit in the middle would be particularly dangerous, and you'd be right. Now guess where we built Wellington, our capital city?
Finally, there was a nice anecdote about some US hotel guests standing in the cold and dark after being evacuated from their damaged hotel. Asked if this had changed their mind about moving to NZ, they replied "Hell no, Trump is a far worse disaster than this!".
Re: New Zealand earthquake: Tsunami follows powerful tremor
#138Earlier quoted context omitted.
He is quoting the movie "Back to the Future" http://www.imdb.com/title/tt0088763/quotes?item=qt0416301
It doesn't matter, it's not appropriate when people are trapped under collapsed buildings and are dead.
English is not my first language, so what exactly is the problem here? Please explain.
Re: New Zealand earthquake: Tsunami follows powerful tremor
#139Earlier quoted context omitted.
It doesn't matter, it's not appropriate when people are trapped under collapsed buildings and are dead.
English is not my first language, so what exactly is the problem here? Please explain.
The poster used slang to reference the event and someone else was making fun of the slang by taking it literally, completely trivialising the fact that a huge natural disaster occurred which resulted in death, injury, and hundreds of millions if not billions of dollars in damage.
Re: New Zealand earthquake: Tsunami follows powerful tremor
#140Could there be any connection to the moon's current proximity to Earth? Does anyone know to what extent the moon's gravity can influence earthquakes? Tides are one thing, but it seems plausible that the moon being closer to earth than it has been in 68 years could be moving the plates a bit more than usual.
In general, there is a connection. The earth tides have an amplitude in the tens of centimeters [1] (yes, the earth moves under our feet!) and a connection to earthquakes is a given, since the stress changes on faults can trigger them. Here is one example: [2] Their research also indicates that a higher stress can trigger earthquakes not triggered by lower stress since the local fault strength must be exceeded. [1] h…
GNS scientists are saying there's no connection.