Quake – 6.8 Solomon Islands

Current quake map

Current quake map

Original Image, with captions and description. The original is interactive with clickable regions for ‘close ups’.

Solomon Islands 6.8

Now this is just becoming a bit much. When I have to think about it being “only” a 6.8 and not quite a 7 and maybe that has me making too many “quake” postings… something is up. So we’ve had several “7” scale and so many 5.x that they are not even worth counting. The number of 6.x has been enough that I’m looking at them thinking “eh, not a 7?”

Here is the original static image:

Australia Area Quake Map from 12 April 2010

Australia Area Quake Map from 12 April 2010

The bottom line is that I just don’t like the way that Pacific Plate looks north of Australia. That is where several times in history a giant volcano has gone off and things have gotten quite cold. Now the whole thing is lit up like Christmas? Not at all good. And that California to Baja run looks like it’s just a cheap vibrator bed in a bad hotel… so much shaking. At least they are dropping down to the 4 range and lower. North of Australia we’re getting 5.x all over, now some 6.x, and a 7.x near Sumatra. Just Rocking…

Here is a dynamic map showing “what’s happened lately”:

Australia Region Quake Map

Australia Region Quake Map

Original Image, with captions and description. The original is interactive with clickable regions for ‘close ups’.

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010uya5.php has the following:

Magnitude
6.8
Date-Time
Sunday, April 11, 2010 at 09:40:30 UTC
Sunday, April 11, 2010 at 08:40:30 PM at epicenter
Time of Earthquake in other Time Zones
Location
10.913°S, 161.130°E
Depth
60.2 km (37.4 miles)
Region
SOLOMON ISLANDS
Distances
100 km (65 miles) WSW of Kira Kira, San Cristobal, Solomon Isl.
205 km (130 miles) SE of HONIARA, Guadalcanal, Solomon Islands
245 km (150 miles) S of Auki, Malaita, Solomon Islands
2025 km (1260 miles) NNE of BRISBANE, Queensland, Australia
Location Uncertainty
horizontal +/- 4.7 km (2.9 miles); depth +/- 12.7 km (7.9 miles)
Parameters
NST=107, Nph=107, Dmin=209.2 km, Rmss=0.85 sec, Gp= 25°,
M-type=teleseismic moment magnitude (Mw), Version=8
Source
USGS NEIC (WDCS-D)
Event ID
us2010uya5

North America Map

Simply because it’s where one side of the Ring of Fire goes.

Current quake map in North America

Current quake map in North America

Original Image, with captions and description. The original is interactive with clickable regions for ‘close ups’.

California Map

Just because I’m here…

The aftershocks of the Baja quake are finally dropping in size though continuing in number. But that run up the middle of the San Andreas / Calaveras is still showing more “pings” than I like.

Current quake map in California

Current quake map in California

Original Image, with captions and description. The original is interactive with clickable regions for ‘close ups’.

That “Barycenter” predictive thing seems to have some merit. Here we are in a Major Minimum with the Sun at low angular momentum and we’ve got quakes going off all over the place. Yeah, “correlation is not causality”, but…

And now I have to add: And they are happening over near where volcanos have been a major issue in past solar minimums? Not good…

From:

http://volcanism.wordpress.com/category/volcanoes/chaiten/

We have:

Recent Yellowstone earthquake swarm was the second-largest ever (Denver Post) – ‘The Yellowstone earthquake swarm that began on Jan. 17 and ended on Feb. 11 was the second-largest earthquake swarm ever at Yellowstone National Park, according to scientists at the University of Utah. … Not only was the swarm the second-largest ever recorded at Yellowstone but it was longer in time and included more earthquakes than last year’s swarm beneath Yellowstone Lake, which occurred in December 2008 and January 2009, according to the scientists.’

Yet they also note that the recent “red alert” issued for Chaiten is not a surprise (though I note that Chaiten is not on the SGI recent activity report this week) and just a reminder of ongoing activity.

Chilean newspaper El Repuerto has harsh words today for the sensationalist reporting by some sections of the press of the recent ‘red alert’ story. Under the rather neat headline ‘Chaitén: entre la alerta roja y la prensa amarilla’ (‘Chaitén: between red alert and yellow journalism’), the article points out that the red alert was nothing new and SERNAGEOMIN were simply reminding everyone that the volcano remained dangerous.

They do have a nice map showing where there were volcanos active in February:

Volcanism Blog Volcano Map

Volcanism Blog Volcano Map

Somehow I’m not comforted… Especially now that Redoubt in Alaska has rejoined the activity report.

Volcanos? Why not – Here Are Some Maps

I like this nice interactive global volcano map. You can click on a volcano and get a report about it.

The USGA US Volcano Status map gives a more focused look at the US action.

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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6 Responses to Quake – 6.8 Solomon Islands

  1. Ken McMurtrie says:

    Hi.
    This volcanic activity would surely have to be unprecedented. Not that I’m going to blame AGW, of course.
    However, you would think this issue would justify major public media attention.
    Certainly not in Australia, where the front pages are more likely to cover football player injuries or Tiger Woods.
    Appreciate your great efforts.
    Ken.

    REPLY: [ Yes, “you would think”… but only if you are one of those people who think… and I’ve noticed that there are not that many. -E.M.Smith ]

  2. Keith Hill says:

    EM. It was interesting to note the progression north along the plate line.

    Wed. Apr 7 4.8 Mag Kermadec Islands Region
    Thur. ” 8 5.0 ” ” ” ”
    Fri ” 9 5.1 ” Tonga Region
    Sat ” 10 5.9 ” Fiji Region
    Sun ” 11 5.3 ” Santa Cruz Islands
    Sun ” 11 6.8 ” Solomon Islands
    Mon ” 12 4.7 ” ” ” ” ”

    As for volcanoes, let’s not forget New Zealand. Among several, there’s a big one under Lake Taupo which even some of the locals will tell you, it’s not a matter of “if” but “when” the next big eruption will occur.
    We had a good program on Aussie TV last night detailing the monitoring (or bemoaning the lack of proper facilities to do so) on some of the nine volcanoes in Vanuatu, some very active.
    The presenter particularly noted that any major eruption in this area could trigger a destructive tsunami on the Australian coastline.
    Rather puts possible rises in sea level caused by alleged CO2 caused global warming into perspective !
    I share your concerns.

  3. E.M.Smith says:

    Yeah, it looks to me like a mostly clockwise rotation (i.e. northward near Australia). But then you get the “jumps” like over to that Sumatra 7.7 and then back again (though it IS on a different plate…)

    And we had some Southern Mexican / Central America quakes before the Baja quake. (though one could make a case, probably a weak one, that those quakes were followed by a Chilean aftershock and then the Pacific Islands… so maybe it WAS a clockwise rotation around the whole plate before it made it back to Baja… )

    I’ve not been able to figure out if it’s more an ‘alternation of sides’ or a “rotate the plate”. Perhaps some fancy statistical analysis would tease out a pattern…

    But the bottom line is that the Atlantic is spreading about an inch a year, so the Pacific has to shrink that much. 2 meters in a long lifetime. So that Pacific Plate gets squashed, buckles, subducted, and the rocks crushed and uplifted in some places (like California where the subducting Pacific Plate is raising the California Coastal Range mountains… so we went hunting sharks teeth in the mountains when I was a kid in High School… ) and that means the ocean plate is slowly being sunk. As one edge goes under it stresses nearby areas and eventually the other side. (and both raises and lowers islands in the middle… far more than CO2 ever will…)

    In the grand scheme of things it probably isn’t so important if the “zipping” happens clockwise or via “tipping’ alternations side to side. Its that it happens in fits and bursts of activity that is probably most useful.

    Per New Zealand. Yeah. One of the few potential Supervolcanos on the planet. I live a few hundred miles from another candidate (Mammoth Mountain)

    http://news.discovery.com/earth/california-supervolcano-eruption.html

    that folks often forget about as they focus on Yellowstone…

    But that’s ok, it’s only been rising in activity “lately”… ( It is that cluster of quakes near the Nevada border on the California map about the same latitude as San Jose.
    37°41′56″N 118°54′23″W

    But not to worry, it can’t be very big. As the wiki puts it (bold is quoted):

    The valley is one of the largest calderas on earth, measuring about 20 miles (32 km) long (east-west) and 11 miles (18 km) wide (north-south).

    http://en.wikipedia.org/wiki/Long_Valley_Caldera

    But it’s not like it’s likely to explode any time soon. After all, it’s on a “Scenic Loop””

    In May of 1980, a strong earthquake swarm that included four Richter magnitude 6 earthquakes struck the southern margin of Long Valley Caldera associated with a 10 inch (25-cm), dome-shaped uplift of the caldera floor.[1] These events marked the onset of the latest period of caldera unrest that continues to this day.[1] This ongoing unrest includes recurring earthquake swarms and continued dome-shaped uplift of the central section of the caldera (the resurgent dome) accompanied by changes in thermal springs and gas emissions.[1] After the quake another road was created as an escape route. Its name at first was proposed as the “Mammoth Escape Route” but was changed to the Mammoth Scenic Loop after Mammoth area businesses and land owners complained.

    and when it does blow, it’s not like it will cover much. Prior eruptions have only reached about, oh, the edge of Texas…

    The rest of the pyroclastic material along with 300 km³ of other matter, was blown as far as 25 miles (40 km) into the air where winds distributed it as far away as eastern Nebraska and Kansas.

    But what’s to worry about? A little ash in the air?

    http://www.armageddononline.org/Mammoth-lakes-activity.html

    During the last big eruption, it covered areas around the surrounding Sierras with as much as 3000ft of ash that held temperatures of 1300 degrees F for months after the the event! and traces of this same ash were some 3 ft deep in the Kansas area!

    And now you know why I like to keep that California Map in all the Quake postings… Just want to keep an eye on it, that’s all… I mean, it’s not like we don’t understand what drives subduction and plume volcanos (from the wiki):

    The tectonic causes of the volcanism that have produced the Long Valley Caldera are still largely unexplained and are therefore a matter of much ongoing research. Long Valley is not above a hotspot as is Yellowstone or Hawaii, nor is it the result of subduction such as that which produces the volcanism of the Cascades.

    Oh, I guess it falls in that scholarly grouping of “Shit Happens”… You know, “settled science”…

    So somehow my family and friends have managed to cozy up to this Supervolcano AND the one on North Island New Zealand. What are the odds?…

    So I watch Mammoth, and I watch North Island. And Yellowstone (though we’re a bit far away from it…).

    And I contemplate the virtues of moving to Brazil…

    So now my “little secret” is out. The reason I watch the quakes / volcanos / weather / solar barycenter discussion of linkage so much. It just might determine if my family lives or dies. No pressure, though. It’s just an academic backwater… “nothing to see… move along … move along…” no practical application…

    (The good news is that I’m “upwind” enough from Mammoth that there is a SMALL chance we would not be done in. It would be down to the major weather and food issues after everything from Modesto to Tulsa was under ash… )

    I’m just a few dozen miles outside that north west edge…

    And besides, right now most of the “action” is over near the Australia / New Zealand side. Only thing here is the unzipping of California as the Gulf of California heads for Death Valley in that Baja quake…

  4. e.m.smith says:

    Golly, the “live map” shows a 5.6 just popped south of Australia / New Zealand. Looks like the Australia Region plate is getting squashed on both sides 8-}

    http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010uzay.php

    Magnitude
    5.6
    Date-Time
    Monday, April 12, 2010 at 10:23:12 UTC
    Monday, April 12, 2010 at 08:23:12 PM at epicenter
    Time of Earthquake in other Time Zones
    Location
    56.929°S, 147.418°E
    Depth
    10 km (6.2 miles) set by location program
    Region
    WEST OF MACQUARIE ISLAND
    Distances
    765 km (475 miles) WSW of Macquarie Island, Australia
    2130 km (1330 miles) S of MELBOURNE, Victoria, Australia
    2415 km (1500 miles) S of CANBERRA, A.C.T., Australia
    Location Uncertainty
    horizontal +/- 11.5 km (7.1 miles); depth fixed by location program
    Parameters
    NST= 23, Nph= 23, Dmin=>999 km, Rmss=0.68 sec, Gp=108°,
    M-type=body wave magnitude (Mb), Version=6
    Source
    USGS NEIC (WDCS-D)
    Event ID
    us2010uzay

    Not like you ought to feel “surrounded” or anything :-)

  5. Galen Haugh says:

    I live just 52 miles south of the south flank of the Yellowstone Caldera. It is not comforting to see all this earthquake activity, especially in and around Yellowstone!

    REPLY: [ Haven’t looked “close up” at Yellowstone lately… might be interesting… Hope you have a fast car, full of gas, and watch for rising quake storms! You ought to get about a 2 week notice of The Big Event (if it should ever come during a human lifetime…) Just head North West into the Jet Stream for the best results ;-) -E.M.Smith ]

  6. E.M.Smith says:

    Magnitude 6.9 – SOUTHERN QINGHAI, CHINA
    2010 April 13 23:49:37 UTC

    Image:

    http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/region/Asia.php

    Details:

    http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010vacp.php

    Magnitude
    6.9
    Date-Time
    Tuesday, April 13, 2010 at 23:49:37 UTC
    Wednesday, April 14, 2010 at 07:49:37 AM at epicenter
    Time of Earthquake in other Time Zones
    Location
    33.271°N, 96.629°E
    Depth
    10 km (6.2 miles) set by location program
    Region
    SOUTHERN QINGHAI, CHINA
    Distances
    240 km (150 miles) NNW of Qamdo, Xizang (Tibet)
    375 km (235 miles) SSE of Golmud, Qinghai, China
    520 km (325 miles) SSE of Da Qaidam, Qinghai, China
    1905 km (1190 miles) WSW of BEIJING, Beijing, China
    Location Uncertainty
    horizontal +/- 6.6 km (4.1 miles); depth fixed by location program
    Parameters
    NST= 73, Nph= 73, Dmin=654.4 km, Rmss=1 sec, Gp= 50°,
    M-type=teleseismic moment magnitude (Mw), Version=7
    Source
    USGS NEIC (WDCS-D)
    Event ID
    us2010vacp
    This event has been reviewed by a seismologist.

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