Quake Watch 2013

woke up and the bed/house was wobbling quite a bit, waited for the noise and the shaking but there was none, so either I missed it or what I felt was just the S wave.
Heard the cat door swinging back and forth. Checked the house, no damage this time.

Public ID 2013p563639
Universal Time July 28 2013 at 13:07:14
NZ Standard Time Monday, July 29 2013 at 1:07:14 am
Latitude, Longitude -41.74, 174.34
Intensity ? severe
Focal Depth 11 km
Magnitude 5.4
Location 25 km east of Seddon
www.geonet.org.nz...

1340 reports, 10 from my suburb "light to moderate"

actually the co-ords show it a bit further south than what they say,
how about 5km east of Cape Campbell. Now thats a different Fault altogether. Needles Fault?


reviewed and location moved to -41.69, 174.30 at 2013-07-28 13:07:14.56 , back on the London Hill Fault



geonet JSON search off line and QVS seized up on NOA download so can't check for 4 decimal places right now


I shut down Firefox and the QVS program restarted

has -41.6948, 174.29553 and 5.39ML @ 11.7km
I like accuracy

reply to post by muzzy

woke up and the bed/house was wobbling quite a bit, waited for the noise and the shaking but there was none, so either I missed it or what I felt was just the S wave. Heard the cat door swinging back and forth. Checked the house, no damage this time.

Sad to hear that,I hope the china is okay and I hope not for the Big One.

Although signs are.

Either way if a 7+ or higher will happen ,the only thing to do is to try to record the earthquake.

reply to post by piequal3because14

Yep the china is safe now, figurines laying down and in the pantry I made a 50mm high plastic lip to stop jars of preserves tumbling off the selves ( lost a jar of relish last Sunday and it made a mess all over the bottom shelf).
It is my opinion that that was the Baths Law biggest aftershock ( one point less magnitude) and that they will taper off now.
If you look at todays NZ map here it seems there is a separate series going on now off Cape Campbell, after this mornings 5.4, to the SE of the main 6.5 aftershock series track, as I said this morning this is more Needles Fault

Of course I could be completly wrong and we get whacked by a 7+ tonight, such is life living on the edge of tectonic plate.

FWIW estimates of $50millionNZD from last Sundays 6.5

reply to post by muzzy

Yep the china is safe now, figurines laying down and in the pantry I made a 50mm high plastic lip to stop jars of preserves tumbling off the selves ( lost a jar of relish last Sunday and it made a mess all over the bottom shelf)

Glad to hear that the china is safe,that china will be of highly important in 100 years.

It is my opinion that that was the Baths Law biggest aftershock ( one point less magnitude) and that they will taper off now.

Seeing the map you might be right,but that fault is becoming more active every day,although increasing activity might not be a sign for a big one.

Probably it is atypical for that area to have a big one after a sequence,or not,but looking to Japan earthquake it might not be atypical,although it has nothing in common as tectonical geography.

reply to post by muzzy

I shut down Firefox and the QVS program restarted

Firefox hugging hogging the connection? It does that sometimes.

Now that was a Freudian slip!!!

Originally posted by piequal3because14

Seeing the map you might be right,but that fault is becoming more active every day,although increasing activity might not be a sign for a big one.

Depends what you are counting, numbers or energy released
As you can see from this graph the energy went down as expected, the numbers went down until the 25th then started to go back up again
NZ numbers and ER
I haven't added the 28th on that yet, but the total number count was 211, so back up again slightly from 181. Yes it is climbing again, will have to wait until the end of 29th at noon NZST today to see how much the 5.4 affected the graph. The ER will jump back up again on the 28th for sure, which could be a good thing, get rid of more of that pressure.
Those are all of NZ numbers, but it is 99% Cook Strait.

A 3.5 eq in Hawaii!
Not unusual you say???
Not on the big island, but this was offshore, east of Oahu!

M3.5 - 13km E of Waimanalo Beach, Hawaii

DYFI? - III
Time: 2013-07-29 20:30:59 UTC
Location: 21.330°N 157.570°W
Depth: 33.3km

Useless seismicity only goes back to 1973 & only 5+
Doesn't show anything around Oahu.

earthquake.usgs.gov...

We used to live in Hawaii & for a while in Waimanalo,
so this is a surprise for us!
Anybody have more info on smaller quake history?
WOQ

reply to post by muzzy

I haven't added the 28th on that yet, but the total number count was 211, so back up again slightly from 181. Yes it is climbing again, will have to wait until the end of 29th at noon NZST today to see how much the 5.4 affected the graph.

Just a 5.1,yet the medium mid of the sequences are the most dangerous,either will fade or will trigger an expected and long waited one,by that fault(s).

And yes you are right the map didn't show any pattern,yet.

Japan has waited patiently on the land,without even thinking for one second of the great danger,tsunamis.

This is why even if the great majority of eq's take place at faults edges,hard for anyone to think the worse.

But I guess we should.

This one was felt,

Magnitude Mw 4.9
Region AEGEAN SEA
Date time 2013-07-30 05:33:09.0 UTC
Location 40.32 N ; 25.88 E
Depth 10 km
Distances 320 km NE of Athens, Greece / pop: 729,137 / local time: 08:33:09.0 2013-07-30
48 km NW of Çanakkale, Turkey / pop: 87,791 / local time: 08:33:09.0 2013-07-30
13 km N of Gökçeada, Turkey / pop: 7,822 / local time: 08:33:09.0 2013-07-30

www.emsc-csem.org...

further to post by muzzy

The 5.4 didn't seem to effect the other Fault too much, most of the subsequent aftershocks have been on the original Fault that the 5.7, 5.8 and 6.5 were on
see 29th July UTC map here
Also the icon colours are mostly green and aqua, a sign that things are settling down.
graph shows numbers down again too

reply to post by piequal3because14

You would have to monitor the quakes by the hour to see any trend, which I haven't got the time for, that is Geonets job (which I pay for as a taxpayer), the best I can do is have a looksee over the data once a day, and it is hard to see trends beyond the reactions to the larger quakes.
The only trend I have seen in monitoring NZ since 2006 is that when things go quiet ( less than 10 quakes per day nationwide), then a 5+ is pretty sure to come rattling through.
This series is actually rare for New Zealand in that the magnitudes increased from 5.7 to 5.8 and then the 6.5, usually its a big quake out of the blue and then aftershocks downwards.
There seem to be more of these progressive increasing magnitude type series lately, eg Japan, Santa Cruz Is, it used to be just California's San Andreas that did that.

reply to post by muzzy

This series is actually rare for New Zealand in that the magnitudes increased from 5.7 to 5.8 and then the 6.5, usually its a big quake out of the blue and then aftershocks downwards.

"A big earthquake with no prior foreshock is a new fault."

Recorded by humans ,it is very possible that new faults will be discovered because of an earthquake.

Originally posted by piequal3because14

"A big earthquake with no prior foreshock is a new fault."

Not necessarily, first you have to define what a foreshock is, how long before?? it depends on your concept of time.
A keep in mind Faults are not just single lines on a map, some are up to 5km wide, run diagonally in cross section, so although a quake may be 5km from the line on the map it doesn't mean it is not on that fault just because it doesn't centre on the line drawn by a geographer.
There are 366 recognized Fault on land in New Zealand.
I'm putting together a Google Earth readable KMZ file of them, been at it for 3 years on and off, have done 22 so far

another thump, I didn't feel it, but 2276 others did

Public ID 2013p572878
Universal Time July 31 2013 at 23:10:11
NZ Standard Time Thursday, August 1 2013 at 11:10:11 am
Latitude, Longitude -41.56, 174.39
Intensity ? strong
Focal Depth 16 km
Magnitude 4.9
Location 30 km east of Seddon
www.geonet.org.nz...

reply to post by muzzy

Not necessarily, first you have to define what a foreshock is, how long before?? it depends on your concept of time.

"A foreshock is a shock (be)fore the main shock,or e sequence of earthquakes before acumulated energy in time disipates in one big earthquake."

The timing is given by total amount of energy quantity,which can be released in a very short period of time ,if the foreshocks grow exponentially with tractor beam of the main shock.

This why the total amount of energy is calculated for the entire sequence after it was released.

A keep in mind Faults are not just single lines on a map, some are up to 5km wide, run diagonally in cross section, so although a quake may be 5km from the line on the map it doesn't mean it is not on that fault just because it doesn't centre on the line drawn by a geographer.

Oh I know that ,this why the great majority are offshore.

"The fine line between a feeling and a disaster is given by the feeling of time."

Magnitude Mw 5.3
Region OFF COAST OF GUERRERO, MEXICO
Date time 2013-08-01 10:24:54.0 UTC
Location 14.25 N ; 103.46 W
Depth 20 km
Distances 735 km SW of Mexico City, Mexico / pop: 12,294,193 / local time: 05:24:54.0 2013-08-01
552 km S of Colima, Mexico / pop: 127,235 / local time: 05:24:54.0 2013-08-01
425 km SW of Ixtapa, Mexico / pop: 5,207 / local time: 05:24:54.0 2013-08-01

www.emsc-csem.org...

Something creaking further down south in Deepest Southern Muzzyland?

2013-08-01 14:19:44, -46.631, 170.716, 4.1, 12.5, Off E. Coast Of S. Island. [F] +-+01+Aug+13++14%3A19%3A44+UTC)&ll=-46.63149,170.71620&spn =2,2&f=d&t=h&hl=e][Map]

reply to post by PuterMan

Something creaking further down south in Deepest Southern Muzzyland?

Hope it's a sign of lowering in magnitude which can mean that no major earthquake will take place in that area.

I hope mister Muzzy will be okay in case if the big one will happen.

But he can move to a place safer of earthquakes,like Ireland.

All he must keep in mind it's when asked he must answer he is flat broke.

reply to post by piequal3because14


Mmm, looks like it has not lowered too much yet

2013-08-01 12:56:13, -41.807, 174.372, 5.1, 19.0, Cook Strait Nz [Map]

Flat broke?

reply to post by PuterMan

Yes that is another one off the East Coast of Otago, which is quite rare.
As I mentioned to John in the comments section on 22.07.2013 these may cause for concern or they may be data errors.
This one is shallow compared to the other 3.

What does it mean?
Dunedin about to become the 3rd NZ city to get whacked in 3 years?
or it could be the end result of the 2009 Dusky Sound 7.6, finally the edge of the Australian Plate falling off into the core there?

reply to post by PuterMan

Mmm, looks like it has not lowered too much yet

You are right,hopefully not an tsunami,although higher ground can be found.

Actually it is not to bad to live in an area free of earthquakes,if would know when and what.