Then It Got Strangely Quiet In The Room…

I’m doing my regular “quake check” and for the third or fourth time in a row “nothing to see”… Then I realize I’ve not seen much at all in many days. Since a week or so after the SuperMoon… So I look more closely at the maps. LOTS of “old yellow squares”, hardly any “new blue or red” squares.

As “red” is “this hour” you don’t expect to see a lot of them, but in a few days of looking I often will hit one or two. During very active events, like aftershocks in Japan, they will be popping all the time. Blue is “today”, so you expect a lower ratio to “this week” in yellow. (About 1 : 6 )

In these two images, there are a bit fewer “blue” than I’d expect to see, and they are somewhat smaller (especially in North America) where the blues are all tiny. Then again, mainland Asia doesn’t even have any tiny ones… :

6 June 2011 N.H. 270_90

6 June 2011 N.H. 270_90

6 June 2011 S.H. 270_-90

6 June 2011 S.H. 270_-90

So does that mean the Super Moon had “juiced things up” and now we’re in the relaxation phase? It lends itself to that notion. Yet a statistical analysis would be a good filter for “random chance”. The statistical approaches often suffer from what I’d call “ideation bias”. Someone picks a window, like 7 days or 2 weeks, and says “we found no excess then, so the effect is not real” and forgets that the rocks may have a different time schedule. The Super Moon might just let them all “creep” more; then the NEXT full (or new or even quarter) moon, whatever makes the right stress pattern, could be the trigger. Or in this case, the lack of trigger.

It might be rather interesting to see if there is a “gap” in quake intensity or numbers (or the product of those two) anywhere in the couple of months after a Super Moon. Or if Vukcevic has a graph showing a sudden plunge of charge influence; (he hinted broadly ;-)

At any rate, some “live charts” so we can see if anything suddenly happens now that I’ve put up a posting saying “nothing is happening” …

The European Hemispheric View

Europe Hemispheric View

Europe Hemispheric View

Europe with “clickable” areas for more details.

Southern Hemisphere

A view of Earthquakes from the South Pole

A view of Earthquakes from the South Pole

Original Image with Clickable Details

That yesterday had this interesting quake in the middle of nowhere:

2011 June 05 11:51:12 UTC

Earthquake Details
This event has been reviewed by a seismologist.Magnitude 6.3
Date-Time Sunday, June 05, 2011 at 11:51:12 UTC
Sunday, June 05, 2011 at 09:51:12 PM at epicenter
Time of Earthquake in other Time Zones
Location 55.944°S, 146.588°E
Depth 10 km (6.2 miles)
Distances 794 km (493 miles) WSW of Macquarie Island, Australia
1244 km (772 miles) NNE of Dumont d’Urville, Antarctica
1449 km (900 miles) S of HOBART, Tasmania, Australia
2018 km (1253 miles) S of MELBOURNE, Victoria, Australia
Location Uncertainty horizontal +/- 19.2 km (11.9 miles); depth +/- 4.3 km (2.7 miles)
Parameters NST= 61, Nph= 61, Dmin=>999 km, Rmss=1.49 sec, Gp= 86°,
M-type=regional moment magnitude (Mw), Version=8
Event ID usc000406b

Northern Hemisphere

North Polar Earthquake Map

North Polar Earthquake Map

Original Image with Clickable Details

Where the only thing of note, really, is a large aftershock in Japan a couple of days back:

2011 June 03 00:05:03 UTC

This event has been reviewed by a seismologist.Magnitude 6.3
Date-Time Friday, June 03, 2011 at 00:05:03 UTC
Friday, June 03, 2011 at 10:05:03 AM at epicenter
Time of Earthquake in other Time Zones
Location 37.294°N, 143.912°E
Depth 31 km (19.3 miles)
Distances 270 km (167 miles) E of Iwaki, Honshu, Japan
287 km (178 miles) ESE of Sendai, Honshu, Japan
308 km (191 miles) E of Fukushima, Honshu, Japan
412 km (256 miles) ENE of TOKYO, Japan
Location Uncertainty horizontal +/- 13.6 km (8.5 miles); depth +/- 6.1 km (3.8 miles)
Parameters NST=546, Nph=548, Dmin=515.4 km, Rmss=0.78 sec, Gp= 29°,
M-type=regional moment magnitude (Mw), Version=B
Event ID usc0003ych

Asia and Russia

Asia Quake Map

Asia Quake Map

Original Image with clickable areas

Australia / New Zealand

This is a map of the Australia / Indonesia / New Zealand area:

Australia / Indonesia / New Zealand Quake Map

Australia / Indonesia / New Zealand Quake Map

Original with clickable regions to zoom in

North America

North America and Mid Atlantic Ridge Quake Map

North America and Mid Atlantic Ridge Quake Map

Original with clickable details

And remember, I have a dedicated CSZ page with closeups

California Map

Action Closer to Me

As I live in California, it makes it easier for me if I keep them in the list where I can see what’s shaking near me.

Here is an alternative view of things with the fault lines highlighted:

California Quakes with fault lines

California Quakes with fault lines

Original Image

Even Baja and Hawthorn Nevada have gone relatively quiet.

We also had Grimsvoten erupt, but it, too, has stopped:

Grimsvoten Cumulative Seismic Moment

Grimsvoten Cumulative Seismic Moment

Original Image

This is from the Iceland Met Office. Main page: English or Icelandic

Update on volcanic activity in Grímsvötn
Status reports, photos and facts
30 May 2011 – 15:00

Collective status report (pdf 20 Kb) of the Institute of the Earth Sciences and of the Icelandic Meteorological office was published at 14:00.

Saturday morning at 6:30 UTC the volcanic tremor on Grímsfjall (Grímsvötn) rapidly decreased and had disappeared at 7 UTC. Since Thursday the tremor had been intermittent. Today, Monday 30 May, it has been confirmed by the participants of Iceland Glaciological Society’s spring expedition that the eruption has ended.

The end of the Grímsvötn eruption is set to 7 UTC Saturday morning 28 May 2011.

And it got strangely quiet in the room…

Map of Plates

You can see it is where plates collide here:

Plates Of The World

Plates Of The World

Original Image, and with other language options.

Some Volcano Stuff

This page: has a nice collection of links to volcano monitor pages. Just click the pictures for the different volcano observatories.

The Smithsonian page:

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About E.M.Smith

A technical managerial sort interested in things from Stonehenge to computer science. My present "hot buttons' are the mythology of Climate Change and ancient metrology; but things change...
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22 Responses to Then It Got Strangely Quiet In The Room…

  1. Bulaman says:

    That 5.5 in Christchurch got our attention. I was up stairs at the time and it was a short sharp displacement! Still after all the little tremors it has to be a large(ish) shake to even notice.

  2. PhilJourdan says:

    Kind of like the quiet before the major eruption? Since I started following your quakes, this is as quiet as I have seen your maps.

  3. R. de Haan says:

    We have a quite impressive eruption going on in Chili at the Puyehue Cordon Caulle volcanic complex with a rift opening up of more than 10 km.
    Plume has reached altitude of approx. 12.000 meters.

    More here:

    Than we had a 3km plume ejected at MEXICO’S POPOCATÉPETL

    And finally we had some activity at the Dieng Plateau, Java

    The latter two were already listed in the Volcanism Report from last week. Puyehue is the new kid on the block.

    As for the seismic activity: silence for the storm?

  4. R. de Haan says:

    From John Seach:

    Monday 6th June 2011
    Puyehue Volcano, Chile
    Puyehue volcano in Chile erupted on Saturday 4th June 2011 after 51 years of inactivity. On the 3th June a seismic swarm occurred with 1450 earthquakes registered at the volcano, associated with magma movement under the volcano. The earthquakes has a focus of 2-5 km depth on the southeast flank of the volcano. More than 130 earthquakes were greater than magnitude 2. On Saturday 4th of June the volcano alert was raised to level RED after a marked increase in seismic activity. Over a period of six hours there more than 230 earthquakes per hour with a focus of 1-4 km depth. Twelve of the earthquake were greater than magnitude 4.0, 50 greater than magnitude 3.0. More than half the earthquakes were over magnitude 2.0. The largest earthquake occurred at 8:36 am local time on 4th June with a magnitude 4.4. Residents reported felt earthquakes on Friday evening and Saturday morning. The explosive eruption began on Saturday 4th June producing a 10 km high ash column. More than 600 people were evacuated from the area. Volcanic ash fell in the city of Bariloche in Argentina, and the airport was closed. Residents of Bariloche said that ash fell like a snowstorm. The Argentine government has sent military troops to help residents affected by the ashfall. A border crossing between Chile and Argentina at Cardenal Samore was closed due to the eruption creating poor visibility on the mountain pass. The last eruption of Puyehue volcano was in 1960 following a 9.5 earthquake.

  5. Pascvaks says:

    There is very probably (somewhere) such a graph as I’m about to describe and I just haven’t come across it yet in my limited travels on the web. But what I’d love to see, and not have to make myself of course, is a simple xy graph of worldwide earthquake magnitudes over time. Something like this one I frequently gaze at and ponder re worldwide polar ice –

    or just a simple, old-fashioned, world-wide, daily, seismic graph created by some computer program that adds up all the other seismic graphs on the planet, cuts all the redundencies and duplications, and spits out a clean, neat 1:The World chart. Wouldn’t you think they’ve got one of these somewhere at the USGS?
    (They could also factor in the thousands of seismic bumps of volcanoic events and use a different color ink for it, couldn’t they?)

  6. E.M.Smith says:


    That “US” in USGS tends to limit the scope of their thinking… or acting… or both…

  7. Pascvaks says:

    PS: “volcanoic” -of or having to do with volcanoes, spelled by someone who didn’t proof what he wrote before he hit da enter button on his little computer keyboard.

  8. Pascvaks says:

    They sure make things tuff for mental midgits like me. Just look at one of these complicated link pages, makes you want to cry that they can’t make a little old graph out of this stuff –

    (It’s a Union Shop Slow Down, that’s what it is. They want more pay and benefits and a ginormous increase to their retirement and medical packages. We’re doomed!;-(

  9. Pascvaks says:

    Somewhat in line with what I was suggesting earlier, this link has more on the matter of annual total energy release via EQ’s

  10. E.M.Smith says:


    Very nicely done! Especially that last link…

    I’d suspected something like that, but ran into the same “wall” you did and was too lazy to push through it…

    IMHO, the quake geologists are just “bought in” to the dogma that there is no pattern, energy distribution is a chaotic semi-random event, and looking for patterns is just reading tea leaves. (At least, that was the notion I got from my geology classes at U.C….) so they just don’t look.

    What is interesting is “The Big Quake” or “the activity on THIS particular fault” that they have under study. Does Cascadia have a 400 (ish) year “big one”? That’s about as far as they go. Everything is “per fault” and not “big picture”. The notion of a global process is dismissed at the get go.

    Basically, they already know it’s random so any “pattern” you find will just be painting you as “quack” so don’t look.

    Yet the earth trembles more now…

  11. R. de Haan says:

    As for our sun:

    Activity continues it’s slide with more unusual movements in the DSN values today. F10.7 flux threatening to go below 100.

    NOAA Region #
    Pixels Darkness
    1226 420 (1127) 70% (58%)
    1227 482(717) 69% (64%)
    1228 769(1174) 65% (57%)
    1231 1059 (1300) 58% (55%)
    F10.7 flux DSN Date/Time UTC
    103.2 (105.9) 1200 (1740) 2011/06/07 06:30

    So despite a raise in spot activity the F 10.7 flux is down the drain?

    Interesting times ahead if you ask me.

  12. R. de Haan says:

    In the mean time Puyehue Ash makes it to Buenos Aires and Paraquay

  13. R. de Haan says:

    Puyehue Cordon Caulle at the NASA Earth Observation,
    Great pictures of the ash cloud moving over a vast area.

  14. R. de Haan says:

    From John Seach,
    Wednesday 8th June 2011
    Puyehue Volcano, Chile
    There has been a progressive decline in seismic activity at Puyehue volcano in Chile. On Sunday 10 earthquakes were registered per hour with the maximum magnitude 3.2. The earthquake focus was at a depth of 2-5 km on the SE side of the volcano. Continuous tremor is at the volcano is related to degassing events. The GOES satellite measured the eruption plume reaching an altitude of 10 km and drifting 3300 km from the volcano. The plume extended 300 km NE then changed to a SE direction. Five pyroclastic flows were generated by partial column collapse, and may have extended for a distance of 10 km. A high concentration of ash at the headwaters of rivers means that secondary lahars remain a hazard. On Monday seismic activity declined further to 7 events per hour, with a maximum magnitude of 2.8. At 9:30 am visual estimates recorded the ash column at a height of 7.5 km which was consistent to that recorded from GOES satellite. Samples from Rio Nilahue showed brownish gray waters with abundant suspended fine ash and pumice floating in size which was predominantly lapilli between 1 to 3 cm diameter. Small bombs were also collected with a diameter up to 7 cm. The bombs were reddish brown, due to greater heat and oxidation with water vapor. Water temperature: 9.25 ° C, pH: 4.5. The recorded ambient temperature was 7 º C. The main rivers which may be affected by lahars are in the northeast río Riñinahue, río Los Venados, río Contrafuerte y río Nilahue; and in the southwest: río Chirre, and río Licán.

  15. pascvaks says:

    Testing 123, testing 123, this new comment block has been driving me crazy over at VJones, “Digging In The Clay”. Looks like I may just be able to post something in 5, 4, 3, 2, 1….

  16. R. de Haan says:

    Piers Corbyn, Weather Action risking his reputation as a long range weather forecaster when takes on the prediction of quakes.

  17. R. de Haan says:

    With a little luck we will make a narrow escape from this CME

    One day earlier and we would have received the full blow

    It’s a really impressing view to see how the sun explodes.

  18. Pascvaks says:

    Old Ma Nature is waking up again, or Oz is movin on up, or both.

  19. E.M.Smith says:


    The biggest thing of interest to me is that Eritria cluster. As noted by George in “tips”


    Eruption of possibly Mallahle volcano, Eritrea region of Ethiopia.

    IR plume can be seen on the left side of this:

    Considering the size of the earthquakes accompanying the eruption, it might be pretty large.

    From comments on Erik Klemetti’s blog.


    Also looks like Kizimen has exploded on the same day (Kamchatka).

    SO it looks to me like the “quiet” is ending in a volcanic kind of way…

  20. George says:

    And it looks like a volcano on the Kamchatka peninsula has erupted in a big way on the same day.

  21. George says:

    FVFE01 RJTD 122350
    DTG: 20110612/2350Z
    VOLCANO: KIZIMEN 1000-23
    PSN: N5508E16019
    SUMMIT ELEV: 2376M
    ADVISORY NR: 2011/207

  22. George says:

    You can get an ongoing updated image of he Ethiopia plume here:

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