Quake Watch 2016

Just started a review of the days since the Kumamoto, Kyushu quakes,
now showing 6.5, 6.5, 7.3
Haven't split out the actual Kyushu ones yet, but the numbers for Japan 14-20 April show;
750 the first 2 days and then just over 400 per day after that.

5.3 Neiafu, Tonga (11.2k) 6.9mi

earthquake.usgs.gov...

a reply to: muzzy

I was watching a live video during the aftershocks.

They were focusing on roads. You could tell when an aftershock was happening because all the car's would stop and wait for it to subside.

4.5 22km SSE of Pijijiapan, Mexico 2016-04-24 23:50:54 UTC 101.0 km

Wow, Mexcio. The Europeans pegged Mexico at 6 M.

www.emsc-csem.org...

But forget that, the day before the uptick of bigger ones, Mexico had 65 earthquakes. Quite a spike. Over the previous week or so they were about 30 to 50 ish on average. But they were on the low side of 4M.

Mexico is still very busy.
www2.ssn.unam.mx:8080...

Oh, and the Yellowstone guy patched up the isthisthingon parkwideview webicoders.

www.isthisthingon.org...

small but caught my eye both today.

M2.5 - 5km NNW of Weaverville, North Carolina

USGS

M2.6 - 26km SSE of Madisonville, Tennessee

USGS

a reply to: lurksoften

Interesting. Earthquakes there are not all that common.
I wonder if it is related in some way to this: www.abovetopsecret.com...

M 4.6 - 12km SSE of El Carmen, Colombia

Time
2016-04-26 01:50:15 UTC
Location
6.593°N 73.465°W
Depth
123.0 km

Reviewed data for Kumamoto up to end of the 23rd JST has been processed
@ 218hrs elapsed time
2863 events;
1,553,915TTNT energy released
mag~1= 34
mag1= 403
mag2= 1650
mag3= 671
mag4= 87
mag5= 15
mag6= 2
mag7= 1

of the 5+ events;
5.9 x 2
5.8 x 3
5.5 x 1
5.4 x 4
5.3 x 1
5.1 x 1
5.0 x 3
That second big one 6.4ML @ 14/04/2016 15:03:46 was originally the 5.7 in the preliminary data
the 5.6 @ 14/04/2016 13:07:35UTC is up to 5.8
the 5.9 @ 15/04/2016 16:45:55UTC remains the same
the 5.4 @ 15/04/2016 18:03:11UTC is reviewed up to 5.9
the 5.6 @ 15/04/2016 18:55:53UTC is up to 5.8
just a decimal point here or there doesn't seem much, but as far as energy released goes it is significant
for example that last one; 5.6 is 3,787.98TTNT, at 5.8 it's 7,558.02TTNT
As crappiekat mentioned the cars stopping in the video, there were 8 occasions when that situation may have occurred, i.e. above M5.8

There are 16 Bing Maps on the page now, split into maps of 197-200 events, its messy but the only way to post maps with lists on the side.
I wonder how many people actually look at the Bing Maps? It's a lot of work setting up but once they are posted its just a case of altering the last one as time goes on.
I think this one will go on for months, but it is already going down in numbers and sizes, to below 400/day.

Kumamoto Reviewed

a reply to: muzzy

Muzzy,

I finally tracked down a suitable explanation of the beach ball symbols.

However, I do think it would be great for you to have a link to a simple, clear explanation for what they mean, indicate--in your signature section.

THANKS TONS for all you do.

4.0 Harrah, Ok 11km (6.8mi)

earthquake.usgs.gov...

earlier today, there was a 3.4 and a 3.5. In the same part of the state.

This 4.0 is SE of the other two.

a reply to: BO XIAN
You should share the link, because it's one thing I never been able to get my head around.

Ecuador is still not done:

5.3 55km NW of Bahia de Caraquez, Ecuador 2016-04-26 21:58:35 UTC 10.0 km

a reply to: BO XIAN

Yes please, do post your link.

I would be very interested in reading.

It one of those things I kinda thought I understood, but then realized I didn't have squat on it.

a reply to: muzzy

OK. I'll try and track it down again.

IIRC, when the white triangles on the beach ball are pointing in vs out, it means that the fault is squeezing things?

I'm not certain. Will have to dogpile.com search it again. Thanks for your kind reply.

a reply to: muzzy
= = =
.
This may be the best explanation: A YOUTUBE video about it:
.
www.youtube.com...
.
I think the video does a good enough job of it. It's better than the link I'd found earlier.

= = = =



OK, here's a decent set of drawings and a pretty lengthy explanation:

.

earthquake.usgs.gov...
.

I think the beach ball in the upper right corner of the graphics is somewhat understandable. The one with the triangles . . . the other link I had seemed to explain that one better.
.

It's not the one I gained the most understanding from, however. Still searching . . .
.
= = =

The graphics and explanation in this wiki article are pretty good and clear:
.
en.wikipedia.org...
.

The left one with the arrows of the first graphic at the top right of the article is one of the best drawings of that type of beach ball that I've seen. That shows what I was talking about with the white arrows pointed in = a kind of squeezing.
.

Then the graphic on the right side under the sub-heading "Moment tensor solutions" is reasonably clear--though it's on the edge of my understanding. LOL.
.

M5.8 - 61km WSW of Puerto Madero, Mexico

14.572°N 92.967°W depth=35.0 km (21.7 mi)

Time
2016-04-27 12:51:22 (UTC)
2016-04-27 07:51:22 (UTC-05:00) in your timezone
Times in other timezones

Nearby Places
61.0 km (37.9 mi) WSW of Puerto Madero, Mexico
80.0 km (49.7 mi) W of Suchiate, Mexico
82.0 km (51.0 mi) WSW of Tapachula, Mexico
83.0 km (51.6 mi) SW of Huixtla, Mexico
264.0 km (164.0 mi) W of Guatemala City, Guatemala

USGS
EMSC 6.0Mw

nice circulair pattern at yellowstone eq's..
up ore douwnlift?
quake.utah.edu...

a reply to: crappiekat

Looks like they still shaking pretty good today also.

M4.1 - 12km NNE of Luther, Oklahoma

35.758°N 97.132°W depth=5.7 km (3.6 mi)

Time
2016-04-27 15:44:55 (UTC)
2016-04-27 10:44:55 (UTC-05:00) in your timezone
Times in other timezones

Nearby Places
12.0 km (7.5 mi) NNE of Luther, Oklahoma
29.0 km (18.0 mi) ESE of Guthrie, Oklahoma
31.0 km (19.3 mi) NNE of Choctaw, Oklahoma
33.0 km (20.5 mi) ENE of Edmond, Oklahoma
47.0 km (29.2 mi) NE of Oklahoma City, Oklahoma

USGS

I did some work today on the 100-trace Continuous Waveform graphs on the Kumamoto, Kyushu M6.5, M6.4, M7.3 + a/s 14-26 Apr 2016 page
I have marked the JMA reviewed estimates of each of the bigger aftershocks on 4 graphs so far, based on matching the times. Mostly there is a 2 minute delay between the excat time of an event and where it is on the graph.
You can clearly see on the bigger quakes they have "tails" this is caused by delay of the S-waves reaching the stations to the north of Japan.
Also often when a 5.0 or 4.6 hit, there was say a 4.2 or a 3.9 respectively less than a minute each side of it which made the trace thicker than if it was just one quake on it's own. there were a lot of 3.9's. Below 2.5 it is hard to tell tehm apart, often JMA haven't matched exactly, some traces haven't been ID'd yet.
I also drew a better map to show where the stations are and how they match the graph.
You can get hourly traces from each station but when the 6.5 and 7.3 hit any stations on Kyushu were completely Black! and it took several hours later before normal siesmo graph traces begin to show.
The aftershocks seem to have tapered right off, at least those above 2.5 anyway, there is hardly anything showing on the southern stations now (#88 through #100)