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Posts posted by john pike
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http://www.emsc-csem.org/Earthquake/alert/?id=UWK05;GFZ&date=2014-11-04 @ 2321
and another
raw data around 4.1-4.5
http://www.emsc-csem.org/Earthquake/earthquake.php?id=407039
shows 4.1 here but expect amendments
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High SO2 Pollution Levels in North Iceland By Eygló Svala Arnarsdóttir November 04, 2014 15:19
The pollution haze seen in South Iceland last month. Photo: Páll Kjartansson.
The level of sulfur dioxide (SO2) gas emitted by the eruption in Holuhraun reached 4,800 mµ/m3 in HúsavÃk, Northeast Iceland, at noon today. People in the area were alerted by mobile text message, mbl.is reports.
The pollution level has since dropped below 2,000 mµ/m3.
At SO2 levels above 2,000 mµ/m3, authorities advise everyone to stay inside, close the windows and turn up the heat the keep the gas out. Further information can be found in English on the website of the Environment Agency of Iceland (below the table).
The air quality was poor in ReykjavÃk this morning, approaching 2,000 mµ/m3, but has since improved.
Go to airquality.is to check the pollution levels in different locations in Iceland at any given time and to vedur.is for pollution forecasts. Tomorrow, mostly Northeast and East Iceland are expected to be affected by the eruption pollution.
http://icelandreview.com/news/2014/11/04/high-so2-pollution-levels-north-iceland
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http://www.emsc-csem.org/Earthquake/alert/?id=UWK57;LDG&date=2014-11-04
raw data from 1
Tuesday
04.11.2014 21:00:21 64.670 -17.440 1.1 km 4.2 50.5 5.3 km NE of Bárðarbunga Tuesday
04.11.2014 20:50:57 64.676 -17.459 8.9 km 4.3 99.0 5.2 km NE of Bárðarbunga Tuesday
04.11.2014 20:45:27 64.668 -17.514 4.9 km 4.8 99.0 3.1 km NNE of Bárðarbunga Tuesday
04.11.2014 17:14:52 64.685 -17.505 7.3 km 4.1 99.0 5.1 km NNE of Bárðarbungahttp://en.vedur.is/earthquakes-and-volcanism/earthquakes/vatnajokull/#view=table
lively as you say jonboy
the first one unchecked will likely be a 5 or very close to it
http://www.livefromiceland.is/webcams/bardarbunga-2/
been glued to the cams
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hi all
hope your all well
i am still floating about but not too much lately to update
tonight
the stubborn showers could be a pest and hang around tonight so (the odd heavy one too)
cold where clear misty where the drizzle - cloud persists
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tomorrow
a weak north-north east flow breezy east coastal regions
temps
will feel quite cold especially if exposed to the north sea coast
around 8-10 degrees
rainfall
drizzly start but drtyer the further west you are
by 12
looks to have finally cleared all areas but the east and far south east still likely to see showers
should clear all by early afternoon but the far east may have to wait until a shade later
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tomorrow nght (bonfire night)
a weak north west from a sw flow
looks dry but that front is still close to our east but with the wind flow it should keep the showers away
temps
a pretty chilly one
around 2 degrees but poss lower locally but maybe a tad higher coastal areas where cloud may persist
look for fog overnght
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thursday
flow will be weak and from a south west
rainfall
should stay dry until late in the day overnight
temps start chilly but will increase as the weather change comes in
could get up to around 15 degrees but will feel chilly in the wind
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thursday night
a strong south west wind
now fax shows
just after midnight
warm front
cold front
trough
basically yuk and could be some very wet weather (flash flooding could be possible)
that green lot is likely from the trough and could give the odd rumble or 2
temps
pretty warm
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friday
still a breezy south west wind but easing after the rain clears
however note the trough has passed now
rainfall
you can see the heaver rain has cleared by then but still the odd shower to our east which should clear soon after
temps
around 15 when raining but will feel fresher again in the afternoon
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another watch is saturday
yuk
maybe worth keeping a look out for warnings on thursday night -friday am
and saturday
anyway off i go again
talk soon
john
heres saturdays fax and looks just as bad
no probs alexis :-)
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Batu Tara volcano (Flores Sea, Indonesia): intense explosive activity, small pyroclastic flow & effusive eruption last night
Tuesday Nov 04, 2014 10:59 AM | BY: TIncandescent rockfalls from the lava dome of Batu Tara this morning (photo: Galih / VolcanoDiscovery Indonesia)The volcano continues to have frequent mild to very strong strombolian, sometimes small vulcanian-type explosions, but also intermittent, short-lived effusive phases.
When observed during 1-4 Nov on our current volcano expedition, explosions occurred at intervals ranging from 5-30 minutes. A small lava dome-like structure is visible at and just below the rim of the active crater. Typically, before larger eruptions, the dome started to produce small rockfalls, presumably caused by small inflation as pressure built up. Several vents were active at the crater.
Ash plumes from the explosions reached 500-1000 m height. Bombs were ejected to up to approx. 500-600 m height and traveled up to 1 km horizontal distance.
Pyroclastic flow and effusive eruption:
An intense short-lived effusive phase took place this night: at around 2 am local time, a powerful explosion was immediately followed by a short lava-rich, fountain-like explosion that initiated a large incandescent avalanche over the whole width of the sciara, causing also some parts of the upper dome to collapse. The avalanche turned into a small pyroclastic flow that reached the shore of the sciara and continued above water for approx. 100 m.
Following this event, an effusive phase began that lasted approx. 2 hours, characterized by continuous rockfalls from the glowing dome at the summit. Several hours later, the deposit from this activity at the shore was still steaming.
During the same time, some explosions occurred as well, some particular powerful ones that sent bombs into the sea and forcing us to abandon camp.
More photos / videos will be posted at a later stage.
- All news about: Batu Tara volcano
- Information about: Batu Tara volcano
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Among the observations by volcanologists conducting weekend inspections in the area around Costa Rica’s Turrialba Volcano were craters in the earth measuring up to one meter in diameter – the result of rocks shooting out from the volcano.
Experts from the National Seismological Network (RSN) and the Volcanological and Seismological Observatory of Costa Rica (OVSICORI) conducted the inspections in light of significant activity at the volcano that started last week.
RSN volcanologist Gino González Ilama said the areas of impact are located on the south side of the volcano and cover 80 percent of the slope up to 400 meters from the volcano’s crater.
“We observed the impact of volcanic rock that had caused several craters on the ground. We believe the rocks were shot out of the volcano at speeds greater than 100 kilometers per hour, and this proves there is strong activity inside,†González said.
A site near the Turrialba Volcano’s crater.
The Tico Times
http://www.ticotimes.net/2014/11/03/ash-from-costa-ricas-turrialba-volcano-reaches-province-of-limon
more detail in link plus a really good video
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Tuesday
04.11.2014 00:19:27 64.673 -17.387 1.1 km 1.3 90.09 7.6 km ENE of Bárðarbunga Tuesday
04.11.2014 00:18:07 64.675 -17.361 1.1 km 1.4 90.04 8.8 km ENE of Bárðarbunga Tuesday
04.11.2014 00:15:26 64.671 -17.452 1.1 km 2.4 90.12 5.0 km NE of Bárðarbunga
http://en.vedur.is/earthquakes-and-volcanism/earthquakes/vatnajokull/#view=table
likely these
review tonight or not
that is the question
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up it goes again
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hi all
its possibly a fountain
but not entirely sure either
http://en.vedur.is/weather/forecasts/areas/
look at the temps there
brrrrrrrrrrrrrrrrrrrrrrrrrrrrr
and if right its not too windy either
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http://en.wikipedia.org/wiki/Earthquake
as far as i know these are at ground level from the epicentre
so if we look at that
that would be very close to the ice
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Monday
03.11.2014 18:06:47 64.683 -17.466 7.0 km 4.4 99.0 5.6 km NNE of Bárðarbunga Monday
03.11.2014 17:12:34 64.675 -17.473 0.1 km 3.8 99.0 4.7 km NE of Bárðarbunga
http://en.vedur.is/earthquakes-and-volcanism/earthquakes/#view=table
imo just updated these
the 3,8 only 0.1km deep
thats very shallow
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interesting so2 release earlier
http://satepsanone.nesdis.noaa.gov/pub/OMI/OMISO2/northern_atlantic.html
as no cams its hard to say what happened there
anyway updates are sketchy again but the graph for 00.47 looks quite large
more on that tomorrow (sorry today)
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hi all
when i saw the csem update i noted it was at a slightly different location (kistufell)
a tiny bit unsure what that means at present so i think we need to see if a swarm of sorts hits there
one thing with this
its very confusing
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http://www.visir.is/flugfarthegar-horfa-beint-ofan-i-eldspuandi-giginn/article/2014141109950
short video in link
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Svavar Hávarðsson skrifar:It's now clear that the Holuhraun eruption is the greatest eruption in Iceland in more than 230 years. This eruption some unique qualities when compared to other Icelandic eruptions through the ages - but also on a global scale.
Earlier this week scientists announced with certainty that the new still-growing lava field north of the Vatnajökull glacier, whom many want to be called Nornahraun (Witches's lavafield) is larger than any other lava field since the Laki eruption in 1783-1784 - an eruption that had greater and more dire consequences than most other eruptions in recorded history.
The lava field now covers 65 square kilometers and is still growing rapidly.
FIVE ERUPTIONS IN THE AREA
Volcanologist Ãrmann Höskuldsson says that the eruption has kept a steady flow since Oct. 6th and that it is impossible to predict when it will stop. As has been stated before it is considered a given that another eruption will soon begin in the area, considering the constant activity in the area. It is now accepted that five eruptions have taken place in the area; two sub-glacial ones, two smaller eruptions north of Dyngjujökull and then the one that's currently in action.
"Although the lava flow has reduced somewhat, it's still over 100 square meters per second, which equals the Skjálfandi river during summer time. The flow was immense in the beginning and was triple its current volume," states Ãrmann and adds that the lava flow covered 20 square meters of land per second.
Ãrmann agrees that the eruption is of a historic scale, and adds that it made the history books in the first couple of weeks. "People tend to measure volcanic eruptions by the cubic meter volume that emerges from the volcano, but that's not a good scale of measurement. It's more about the speed of things. You can talk about big volume volcanoes that took decades or even centuries to accumulate. In this case we're getting an incredible amount in an almost absurdly short amount of time.
In terms of volume Holuhraun beat Fimmvörðuháls before noon on the first day, but the Fimmvörðuháls eruption lasted for two weeks. During the first week we realized that the Holuhraun eruption was something we'd never dealt with before." Ãrmann believes that the total volume of the lava field is now around a million cubic kilometers, but the Hekla eruption in 1947, which is often used as a comparison for large eruptions in Iceland, had a much lesser lava field volume. "It's surpassed everything that we know of."
GAS REMAINS A RISK
The gas pollution from the caldera is currently the biggest concern, but in the beginning the force of the eruption and the thermal uptake was so great that the gas was launched high into the sky where no one noticed it. Later, as the force of the eruption diminished, the gas has lain over the land and been a nuisance.
There's no end in sight to this problem, in fact experts like Þorsteinn Jóhannsson at the Icelandic Environmental Agency are predicting the exact opposite - that the winter weather will escalate the problem, especially during the calm frost. "This problem will only get worse with time and it is unlikely that the eruption will grow in force and start kicking the gas to a higher altitude."
ICELAND AND THE WORLD
Even when the Holuhraun eruption is compared to eruptions all over the world the facts remain the same. Ãrmann states "We'd have to go way back, there's a huge eruption in the Canary Islands during the middle of the 18th century that's probably larger than this one. So even on a global scale the Holuhraun eruption is making history. Simply put it's the biggest lava eruption Mankind has seen since the 18th century."
FIREHEART
When asked further about the eruption, Ãrmann notes that the eruption has already lasted longer than both the Fimmvörðuháls and Eyjafjallajökull eruptions combined. Ãrmann also adds that the magma that's coming up is unusually hot; it's around 1200 C° which is around 200 C° greater than magma coming from other known eruptions.
"These facts support the theory that this is a tear from the fireheart itself, the hotspot under the country. This is coming straight from the mantle and up to the surface. This makes it very difficult to predict when the eruption will end.
BÃRÃARBUNGA
But that's not all. Ãrmann mentions that Icelandic geologists have poured over every text and historic reference they know of, looking for examples of a series of events anything like that which the nation has been seeing in Bárðarbunga for the past couple of months.
"Bárðarbunga is a huge concern and we've never seen anything like this. The large amount of strong earthquakes, sometimes many a day, for days and weeks on end.
We've looked up every observed volcano, and this is unprecedented. That makes the big picture much harder to see, because we don't know what it all means," says Ãrmann who adds that the data that has been collected from the Holuhraun eruption will take several years to work through. No one can claim when that data gathering will end though, as the Holuhraun eruption is surely only the beginning of a far longer series of events in and around the Vatnajökull glacier.http://www.visir.is/holuhraun-eruption-reaches-global-scale/article/2014141039805
fascinating
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quakes at north mid atlantic ridge
all at 5km deep
http://www.emsc-csem.org/Earthquake/
questiojn now
make iceland worse or slow it down???
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hi all
http://www.emsc-csem.org/Earthquake/earthquake.php?id=406759
probably call it 5.3 when imo check it
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not much to report tonight
quake at 12,27 probably around 4,5
http://www.emsc-csem.org/Earthquake/alert/?id=UVN05;LDG&date=2014-11-02
2 other smaller ones around 1,57 and 2, 12 but will probably update tomorrow
cams are working now but no visibility tonight
gps looks fairly stable tonight up to time of reporting
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M6.9 - 142km NE of Ndoi Island, Fiji tectonic Summary
Seismotectonics of the Eastern Margin of the Australia PlateThe eastern margin of the Australia plate is one of the most sesimically active areas of the world due to high rates of convergence between the Australia and Pacific plates. In the region of New Zealand, the 3000 km long Australia-Pacific plate boundary extends from south of Macquarie Island to the southern Kermadec Island chain. It includes an oceanic transform (the Macquarie Ridge), two oppositely verging subduction zones (Puysegur and Hikurangi), and a transpressive continental transform, the Alpine Fault through South Island, New Zealand.
http://earthquake.usgs.gov/earthquakes/eventpage/usc000stdc#summary
no damage and tsunami advisory dropped
http://earthquake.usgs.gov/earthquakes/eventpage/usc000stdc#summary%C2'> now reviewed to 7.1
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Costa Rican authorities issued an emergency alert yesterday after ash from the erupting Turrialba volcano reached the capital San Jose and beyond. The alert came after a series of eruptions late Wednesday and early yesterday. The National Emergency Commission also ordered the closure of the national park around the volcano. In a statement, authorities said 11 people had been evacuated to temporary shelters around the town of Santa Cruz de Turrialba. Other people whose communities were threatened by ash also gathered at the town. Residents of San Jose, about 35 kilometres (20 miles) from the volcano reported smelling sulphur, while falling ash was seen as far away as Ciudad Colon, about 50 kilometres (30 miles) away. Geologist Carlos Martinez from the National Seismological Network, said the eruptions were coming from a new fissure that appeared near the crater a few years ago. He said the biggest eruption came at dawn yesterday, when a column of smoke and flame about 300 metres (1,000 feet) high forced observing scientists to retreat to safety. Authorities are also monitoring two other volcanoes -- Rincon de la Vieja in the north-west, and Poas, in the country's centre.
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this is bonkers
but have to take the weather into account
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no cams so no viewing :(
list of quakes over 3 today
Saturday
01.11.2014 15:42:41 64.670 -17.390 1.1 km 3.9 50.5 7.3 km ENE of Bárðarbunga Saturday
01.11.2014 12:23:41 64.677 -17.473 0.4 km 4.0 99.0 4.8 km NNE of Bárðarbunga Saturday
01.11.2014 10:28:53 64.675 -17.423 3.4 km 4.1 99.0 6.3 km NE of Bárðarbunga Saturday
01.11.2014 09:00:17 64.675 -17.490 7.1 km 4.3 99.0 4.3 km NNE of Bárðarbunga Saturday
01.11.2014 05:59:13 64.670 -17.452 8.0 km 4.5 99.0 4.9 km NE of Bárðarbunga Saturday
01.11.2014 05:03:53 64.674 -17.439 8.8 km 4.2 99.0 5.6 km NE of Bárðarbunga Saturday
01.11.2014 04:01:35 64.674 -17.461 7.1 km 4.1 99.0 5.0 km NE of Bárðarbunga Saturday
01.11.2014 03:18:49 64.675 -17.485 7.1 km 4.1 99.0 4.3 km NNE of Bárðarbunga Saturday
01.11.2014 01:36:42 64.667 -17.447 3.6 km 4.0 99.0 4.8 km NE ofthe top one has not been verified yet
http://en.vedur.is/earthquakes-and-volcanism/earthquakes#view=table
its on the graph now and looks around 4.2ish
http://en.vedur.is/media/jar/event_numbers_31102014_1900.pdf
approx amount of local quakes so far to date
http://en.vedur.is/weather/forecasts/areas/
weather looks poor and might be a wait until things settle down a bit
Bárðarbunga and Askja - Volcanic Activity
in Space, Science & nature
Posted · Edited by john pike
http://www.emsc-csem.org/Earthquake/alert/?id=UWK04;LDG&date=2014-11-04
now thats big 23.23
imo show
04.11.2014 23:22:28 64.680 -17.440 1.1 km 4.4 50.5 6.1 km NE of Bárðarbunga
that could be a 6