The monsters wakes up ! Katla Hekla Iceland Dead Zone and rift as uniform system ! A lot of others worldwide !

[link to hraun.vedur.is]

interesting signal showing on the God chart

notice the blue line starting to go above the green line. that is a pre eruption signal, but it doesn't always mean an eruption will happen. last time I saw a signal like that there was this time last year. this signal seems a bit stronger though.

this is what the chart for Grimsfjall looked like for the eruption there in 2004..

[link to www.jonfr.com]

[link to hraun.vedur.is]

^^those signals are climbing steeply too. even the e15 blue signal at the bottom is showing a slight rise, which is exactly what it did a year before activity started in the run up to it's eruption in 2010. go back on the years to check it out. only small signs at the moment, but interesting stuff going on.

yes something is going on... it can be a whater burst

[link to www.volcano-blog.com]
IAVCEI Day 3 - Field Day, and what a day it was! #iavcei2013
22/07/2013

At a conference with many volcanologists, what's the best thing that could happen, free beer on a boat? Well yes that happened. Fireworks just for our enjoyment? Well, yes, that happened too. So what you ask...well, an eruption of Sakurajima would suffice I suppose, and WOW it was timed well (for me and others). The activity lasted for more than an hour an consisted of quite a few (around 10ish) individual explosions, the largest of which reached approximately 3 km in height (verified by someone from the Sakurajima observatory). Not only that, there was at least 3 occurrences of visible volcanic lightning. The photo on the right shows the beginning of the eruption:
[link to www.volcano-blog.com]
...

also from IAVCEI2013

Shan de Silva
(supereruption)
Supereruptions triggered by buoyancy? Interesting idea. If so, why do we get ever get a magma chamber or a pluton?

[link to www.wunderground.com]
Amazing Volcanic Eruptions

By: Derek Rich
Published: July 18, 2013

[link to phys.org]
New study ignites debate over Indonesia's mud volcano
14 hours ago
Scientists on Sunday sparked a fresh debate over what triggered Indonesia's Lusi mud volcano, still spewing truckloads of slime more than seven years after it leapt catastrophically into life...
The new research, by a team led by Stephen Miller at the University of Bonn in Germany, suggests the eruption was caused by the 6.3-magnitude earthquake that occurred two days earlier near Yogyakarta...
At its peak, Lusi disgorged 180,000 cubic metres (6.4 million cubic feet) of mud a day.

Today, the rate has fallen to between 15,000 and 20,000 cu. m.(500,000 and 700,000 cu. ft.) per day, according to the government's Sidoarjo Mudflow Mitigation Agency, or BPLS.

This is roughly equivalent to between six and eight Olympic-sized swimming pools of muck per day.

Amein Widodo, a geologist from the Sepuluh Nopember Institute of Technology in nearby Surabaya city, said it was impossible to predict how long the volcano would keep erupting. "The amount of mud has reduced a lot, but having seen other cases in Java, it's possible it could erupt for more than 100 years," said Widodo...

[link to www.jonfr.com]
Minor earthquake swarm in Katla volcano
Posted on July 22, 2013 by Jon Frimann
...I am not sure what did create this earthquake swarm, it might have been a dike intrusion, or it simply might just be a pressure changes in hydro-thermal areas in this location...

and he's right

[link to www.avo.alaska.edu]
ALASKA VOLCANO OBSERVATORY DAILY UPDATE
Monday, July 22, 2013 1:03 PM AKDT (Monday, July 22, 2013 21:03 UTC)
VENIAMINOF VOLCANO (CAVW #1102-07-)
56°11'52" N 159°23'35" W, Summit Elevation 8225 ft (2507 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Nearly continuous, low-level volcanic tremor continues to be seen in seismic data. Elevated surface temperatures at the intracaldera cone of Veniaminof volcano were detected in satellite data today. Available data indicate an ongoing low-level eruption characterized by intermittent effusion of lava and emission of minor amounts of ash and steam...

[link to www.avo.alaska.edu]
Southwest flank of the intracaldera cone at Veniaminof Volcano showing lava flows emplaced during June-July eruptive activity. View is toward the east. These flows appear similar to the lava flows produced during the 1993 eruption.
Date: July 16, 2013 06:35 PM
Volcano(es): Veniaminof
Photographer/Creator: Waythomas, Chris :
[link to www.avo.alaska.edu]

[link to en.vedur.is]
Date Time Latitude Longitude Depth Magnitude Quality Location
Tuesday
23.07.2013 04:19:18 63.649 -19.162 0.1 km 2.1 99.0 4.5 km ENE of Godabunga

it`s not volcanic event, but very interesting

[link to blogs.agu.org]
large rock topple failure at Saint Jouin Breneval in Normandy, Northern France on 18th July. Apparently the volume of the collapse was about 30,000 cubic metres. I have taken this screenshot of the rock topple as it developed:
[link to blogs.agu.org]

vid

John Seach @johnseach 4h
Magnitude 5.3 earthquake 37 km southeast of #Bandai volcano, #Japan.
·

John Seach John Seach @johnseach 23h
Eruption of #Merapi volcano, #Indonesia. Ash 13,000 ft altitude.

Unusual geological event in Indonesia on Tuesday, 23 July, 2013 at 03:19 (03:19 AM) UTC.

Description
Scientists have sparked a fresh debate over what triggered Indonesia's Lusi mud volcano, still spewing truckloads of slime more than seven years after it leapt catastrophically into life. Published in the journal Nature Geoscience, the study strengthens the argument by gas company PT Lapindo Brantas that the disaster was caused by a distant earthquake, not by its drilling crew as some experts contend. Lusi, located in the Sidoarjo district of the island of Java, erupted on May 29, 2006 in the middle of a rice field. It has destroyed 13 villages, dozens of factories and shops and a highway, prompting the government to build dykes 10 metres high to try to contain its spread. Nearly 50,000 people were displaced. The new research, by a team led by Stephen Miller at the University of Bonn in Germany, suggests the eruption was caused by the 6.3-magnitude earthquake that occurred two days earlier near Yogyakarta. Even though the two events were 250 kilometres apart, the rock formation at Sidoarjo has a shape and structure that acted rather like a lens, amplifying and focusing the wave of seismic energy from Yogyakarta, according to their computer model.

The jolt of energy would have liquefied the source of the mud, causing it to be injected into a fault connected with a deep hydrothermal system. This superheated blowout feeds the eruption today, goes their theory. Asked to comment on the study, British geologist Richard Davies pointed to the daily drilling reports from the Lapindo Brantas team at Sidoarjo. It showed their gas exploration was going awry, Davies said. On the day of the eruption, the drillers acknowledged that they were having problems in stabilising pressure in the hole, a routine procedure that uses injected fluids, as they sought to withdrew their drill bit, he said. That, and the lack of protective casing around the hole, "was like pulling the cork out of a champagne bottle," causing a "kick" of high-pressure mud to blow from the hole, Davies, a professor at Durham University, told AFP in a phone interview. "When the Yogyakarta earthquake occurred, nothing happened in the well. The pressure in the well was already many orders of magnitude bigger than the pressure changes due to the Yogyakarta earthquake," Davies.

"They've come up with an elaborate geophysical model but I think they've ignored the more obvious data," said Davies said. Seismologists have widely, but not unanimously, sided with his explanation. Some note that much larger earthquakes had previously occurred closer to Sidoarjo yet not caused any mud volcano. At its peak, Lusi disgorged 180,000 cubic metres of mud a day. The rate has now fallen to between 15,000 and 20,000 cubic m per day, according to the government's Sidoarjo Mudflow Mitigation Agency. This is roughly equivalent to between six and eight Olympic-sized swimming pools of slime per day. Amein Widodo, a geologist from the Sepuluh Nopember Institute of Technology in nearby Surabaya city, said it was impossible to predict how long the volcano would keep erupting. "The amount of mud has reduced a lot, but having seen other cases in Java, it's possible it could erupt for more than 100 years," said Widodo. [link to hisz.rsoe.hu]

more

Shan de Silva supereruption 15 h
Trish Gregg says "need to move away from fixed pressure boundary condition for understanding eruption triggers and deformation" IAVCEI13

Erik Klemetti eruptionsblog 3 h
Today's post has images of volcanoes I've visited for fieldwork or field trips, but seen from space:
[link to www.wired.com]

Shan de Silva supereruption 12 h
Nabro, Malhale, and Dubbi volcanoes in Eritrea and Djibuoti may share a magma source. Entente Cordiale! IAVCEI13

Question: What is the largest volcano on Earth?

Answer: Mauna Loa in Hawaii

According to the United States Geological Survey (USGS), the Mauna Loa volcano in Hawaii has the largest volume of any volcano on Earth. Mauna Loa consists of about 80,000 cubic kilometers (19,000 cubic miles) of lava and rises more than 17,000 meters (56,000 feet) above its base on the Pacific Ocean floor. Because of its massive size, the volcano has depressed the Pacific tectonic plate upon which it sits by about 8 kilometers (5 miles). More than half of the area of the island of Hawaii, some 5,000 square kilometers (2,000 square miles) is attributed to Mauna Loa.
[link to www.science.gov]

[link to www.cenapred.unam.mx]
July 23 11:00 h (July 23 16:00 GMT)

In the last 24 hours the monitoring system of Popocatepetl volcano registered 75 low to moderate intensity exhalations, accompanied by emissions of steam, gas and sometimes ash, the most important of wich was recorded today at 03:43 h, generating a plume of ash of 1100 meters high that was carried in northwest direction ...

Wilmer Merino
wily_wilmer
The Tungurahua volcano with a little of lava and ash, in the afternoon today 22/07/2013 :
[link to mobile.twitter.com (secure)]

[link to blogs.egu.eu]
... Straddling the northern Andes where the Nazca Plate is subducting eastwards under the South American Plate, it’s not surprising Ecuador presents a range of phenomena. In terms of volcanic activity, the continental Ecuadorian volcanic arc has more than 50 volcanic complexes of which 7 have erupted during historical times (beginning with the Spanish conquest in 1532) and a further 10 in the last 10000 years. To that you can add the Ecuadorian territory of the Galapagos Islands with 7 volcanoes showing historical activity. Ecuador also has significant seismicity. There were 37 destructive earthquakes between 1541 and 1999 with a Modified Mercalli Index intensity of at least VIII, meaning a considerable level of damage to structures in this country. Although the IG has been unable to quantify the degree of building loss, it estimates more than 80,000 deaths from earthquakes. This is all taking place in a country with a high economical vulnerability to natural hazards and ranked 89th in the world for human development...

[link to www.kscnet.ru]
...
KIZIMEN VOLCANO (CAVW #1000-23-)
55.13 N, 160.32 E; Elevation 8151 ft (2485 m)
Aviation Color Code is ORANGE

Moderate seismic activity of the volcano continues. A growth of an extrusion at the volcano summit continues. Incandescence of the volcano summit, hot avalanches, and strong and moderate gas-steam activity accompany this process. Satellite data showed the volcano was obscured by clouds....

also aviation Color Code is ORANGE:
SHEVELUCH, PLOSKY TOLBACHIK , KARYMSKY VOLCANOS

aviation Color Code is YELLOW:
BEZYMIANNY , GORELY VOLCANOS

Shan de Silva @supereruption 14 h from IAVCEI13
Roberto Isaia tells us about paired eruptions at 4ka from Campi Flegrei! More common than we think?

Mexico lowers alert level for Popocatepetl volcano from
yellow III to yellow II

hmm

was just watching katla..

[link to www.qicknews.de]

was nice and calm. lovely scene. suddenly it started jumping about.

lovely and calm there today..

[link to en.vedur.is]

jon's chart looks interesting..

[link to www.jonfr.com]

[link to www.qicknews.de]

what is causing those low mists at Katla directly in front of the cam?

they've been there a few days now. high clouds over the glacier, yet these mists persist. I have been keeping an image record here for 3 years now, and just clicked through all 1185 images, and only in the last few in these past few days do these mists appear.

very odd. probably only weather, but ODD weather for that area based on the last 3 years of watching it.

[link to www.qicknews.de]

weird jumping, then complete stillness

watch it for a while

winds quiet there at the moment

[link to en.vedur.is]

the camera has gone down now for me. anyone else getting the image? weird it goes down just as I point out something odd there.

[link to www.ruv.is]

that one has gone too.

no more katla cams? I can't find any.

i think katla may be about to go

just a gut feeling. something isn't right with all these cams going down, and certain things i've been seeing on the cams, but apart from that, the EQs are 'normal'..

[link to en.vedur.is]

the tremor, well, i've seen it a lot worse than this..

[link to www.jonfr.com]

although there's an interesting little signal around 0835 for about 17 minutes

i dunno, got a bad feeling

Volcano Activity in Russia [Asia] on Sunday, 04 August, 2013 at 04:41 (04:41 AM) UTC.

Description
A (so far small) seismic crisis has started about a week ago. The earthquake hypocenters are currently located at depths around 30 km SE of the volcano. The new quakes superimpose to the normal seismic activity at shallow depth. It is not clear whether this indicates that magma has started to accumulate at the mantle-crust boundary beneath the volcano, or whether the seismic activity there is purely tectonic and related to the subduction of the Pacific Plate. Currently, there are no indications that the volcano might be in for a new eruption, but since Avachinsky is located very close to Kamchatka's capital town of Petropavlovsk with 200,000 inhabitants, it is being monitored closely by Russian scientists. As Blog Culture Volcan who posted about this story first pointed out, recent studies on the magma plumbing system of Avachinsky show that the volcano's recent eruptions, at least the one in 1991, were fueled by at least two different shallow magma chambers: These are located at 1.8 and 5.5 km depth beneath the summit, and correspond to the boundaries between the floor of the caldera (formed about 30,000 years ago) and the present summit cone, and the contact of the volcanic edifice as a whole overlying carbonate sediment basement, respectively. In both cases, the geologic contact between of different rock types with different densities and structures seem to stop dike propagation and act as storage regions for magma. On the other hand, no deeper magma reservoir has been identified for Avachinsky, and no progression of epicenter depths towards the surface has been seen for the recent deep quakes. This favors the interpretation that the observed quakes are mainly tectonic in origin.


[link to hisz.rsoe.hu]

Please leave her the way she is at the moment, in a deep slumber!