Quake Watch 2016

a reply to: muzzy

The aftershocks keep on coming. They are showing up nicely in GEE on the South Kaori seismo:
(USGS calls the larger one on the left a Mag 5.1 mb located offshore, away from the main groupings.

a reply to: Olivine
Indeed, we are feeling those ones, in the last hour it appears the area around Seddon (scene of the 2013 double 6.5's) is unzipping
how big will they go is the question

Yeah looks like its the Hope Fault that gave
The Main Shock wasn't actually on the Fault itself, but the Hope starts just north and tracks right through to where the M6's north of Kaikoura were
data.gns.cri.nz...

Looking at the Plate Boundry KMZ file from USGS on Google Earth seems it is the Continental Transform Fault which is at play here, the CTF includes the Alpine Fault (just a few km north of the Hope Fault) and breaks at Cook Strait but continues up through the North Island as far as Ruapehu, exactly where all the "aftershocks" are running.
I have never seen such a long stretch of "aftershocks" in NZ before, 630km

here is the Plate Boundry KMZ file, you will need Google Earth to open it
dl.dropboxusercontent.com...

We have water, but it is "dirty"
could be the Waikanae river got shook up and dislodged silt which entered the treatment plant and then the pipes
haven't heard anything about this on the media

Wellington CBD is deserted, people are following Civil Defence instructions



11 of the M5 aftershocks have been Cook Strait, biggest 5.6
13 have been Marlborough (Hope Fault) + the two 6's and the 7.5

As far as M4's go, at this stage
72 Cook Strait Area (Seddon/Wellington)
64 South Marlborough-North Canterbury (Hope Fault)
11 Other

In case you didn't see it on TV One link previous page
www.tvnz.co.nz...
near Kaikoura

a reply to: muzzy

I'm just glad you're ok, muzzy. Don't let the guard down though until at least the 20th. As you know, that kind of stress release can propagate and trigger other faults. Any ideas as to why so few aftershocks to the south, and why they are headed mostly north? Perhaps most stress was released south of there back during the big Christchurch quake?

a reply to: TrueAmerican

Latest theory is that there was 2 quakes, that may explain what I thought was that P and S waves, but in hindsight it didn't feel like a normal P+S because they were both a rolling swaying motion.
Geonet haven't been specific but it might explain the heavy number of aftershocks at Seddon.
info.geonet.org.nz...

Just felt another couple of a/s 30 minutes ago, near Seddon

the Clarence River is blocked by a huge landslide, building a big lake already, worries about if it bursts suddenly for those downstream

I know I have said this before but we just continue to see tectonic movement as expected all along the ring of fire except the US West coast. Here we have nothing.

At some stage .... it just has to go.

It has been years since it released any meaningful energy.

It is a worry.

Still a bit mad at you muzzy but I am very relieved that you are well.

P

a reply to: muzzy

The raw data at IU.SNZO clearly shows just one quake, with a second 6.2 right afterwards. See it for yourself.

Big Sway right now at least 30 seconds long

Edit;
6.6 30 km north of Cheviot
www.geonet.org.nz...

a reply to: muzzy

Click Me

This is a first. I have never seen the list like this.

Go down to the quake list, almost the whole list is NZ data.

P

originally posted by: muzzy
Big Sway right now at least 30 seconds long

Yup, that's looking like 6.5 or so, yikes...

Bizarre.... Propagation is not there at all to support a 6.8, which the USGS has it as. Nope. That will be reduced. 5.8 to 6.1 I estimate.


And yep, as I said, USGS just reduced it to 6.2

a reply to: pheonix358
There were 356 aftershocks at the 9.5hrours elapsed time, that was 3 hours ago, there will be heaps more yet
I don't know where to cut off the search area, it's like the whole North Island is having aftershocks

originally posted by: muzzy
it's like the whole North Island is having aftershocks

Not good. That could uncork something at supervolcano Taupo.

The earth moved two metres to the north in Marlborough during Monday morning's major earthquake, according to data from GNS Science.
The geoscience research company recorded significant movement at a GPS monitoring station at Cape Campbell, about 50 kilometres south of Blenheim, during the 7.5 earthquake just after midnight.
GNS Science public information specialist Caroline Little said the ground moved horizontally 2 metres to the north and vertically down a metre.

www.stuff.co.nz...

there are more stories on that STUFF site, its one of the local Newspapers web sites

a reply to: TrueAmerican
yeah it was already playing up there the last 3-4 days, nothing big in size, but some movement none the less.

a reply to: TrueAmerican
Yeah I see Geonet did too, 6.2612
but also a 5.7 at Seddon 31 seconds before,
that is about how long it lasted here, so hard to tell which one it was I felt, perhaps again a double hit that felt like a single quake
the length of swaying was quite long, just like the one(s) at 12:02am NZDT

a reply to: muzzy

6.5 Earthquake WSW of Kaikoura 10 km depth earthquake.usgs.gov...

Muzzy, I looked at the pressure and it was low during the first big one. There were really strong winds along South east Australia as well. Lots of wind as well the days previous between the islands.

We lost one!
13/11/2016 11:52:44NZST Mag 6.2023
I had it this morning, but just did an update/download
its not there any more, and there is no replacement based on time.