Volcano bits and bites - Sicily, Alaska, Iceland ...

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This report is compiled out of many information sources and is brought to you by volcanologists Philippa (Demonte) and Janine (Krippner). Armand (Vervaeck) is backing them up as both volcanologists are sometimes too busy professionally to post updates.


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Etna, Sicily, Italy
Beautiful picture from the powerful eruption of Etna on December 4, 2015
Photo from Pippo Calabrese via Etna Live

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Mount Katmai, Alaska, USA (Philippa)
This fantastic image (below) of Mount Katmai was taken earlier this month during the University of Alaska Fairbanks annual volcanology summer school to Katmai National Park and the Valley of Ten Thousand Smokes.
The world's largest volcanic eruption of the 20th Century took place in June 1912 at a neighboring dome called Novarupta. The copious amounts of volcanic ash which fell from the immediate vicinity around the eruption plume causing pyroclastic flows formed the Valley of Ten Thousand Smokes. Because the source of the magma had actually been from under Mount Katmai, 10 km away from Novarupta, and because the eruption was so large (VEI 6), it caused the roof of the magma 'chamber' to collapse at the end of the eruption, forming what is known as a caldera at Katmai. From historical reports, mapping work, and analysis of sedimentary deposits it has been calculated that the eruption plume reached a height of ~20 miles, and within less than two weeks the volcanic ash had been carried by air streams in the stratosphere as far as Algeria in Western Africa.

via Bob Gooday (@BobGooday) + information from Alaska Volcano Observatory

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Heimaey, Iceland (Philippa)
The image below, which was taken from the summit of Eldfell cone, shows the community of Heimaey in Iceland, whose harbour was very nearly cut off by lava during an eruption in January 1973. Since the community was hugely dependent on fishing, not to mention being able to launch their boats to evacuate in this emergency situation, several people very cleverly came up with the idea of using fire hoses to pump sea water on the advancing lava flows to rapidly cool them. This prevented the harbor from being completely destroyed.
Via Ben Edwards (@lava_ice)

Heimaey

The video below shows the eruption, evacuation, and sea water spraying. Apologies for the poor quality. This was filmed in 1973.
Via Historia - Bel99TV / YouTube

Mount Etna, Sicily (Philippa)
Reasearch teams from the University of Liverpool and the University of Alaska Fairbanks are currently conducting fieldwork on Mount Etna. They will be collecting seismo-acoustic data, i.e. taking measurements of the volcanic earthquakes caused by the movement of magma and volcanic gases beneath the surface, and measurements of the vibrations of the atmosphere (at frequencies lower than our human level of hearing) generated when gases, ash, and lava products are erupted into the air above ground.
Via electron libre (@volcblast)

Oliver Lamb on Etna 20June2017

The Liverpool and UAF teams have also come across another group of scientists conducting field work on Etna to test moon rovers, as the surface of the Moon, as with the the surface of Etna, is made of basaltic lava.
Via Oliver Lamb (@olamb245)

Moon rover testing on Etna 20June2017 OLamb

June 22, 2017


Volcan Poas, Costa Rica (Philippa)
The video below shows the recent evolution of the crater at Volcan Poas. Until recently this contained an acidic water lake, but due to increased heat this evaporated away, followed by phreatic (steam-generated) eruptions, and as of yesterday, more ash-rich eruptions from two vents within the crater.

via OVSICORI-UNA

 

Mount Nyiragongo, Democratic Republic of Congo (Philippa)
Aldo Kane is no stranger to adventure, but says that conditions whilst filming at Mount Nyiragongo for a new BBC programme called 'Jungle Volcano' have been the toughest yet.  Whilst additionally being responsible for rigging and security, he, the tv crew, and scientists have also had to contend with extremes of temperature, rock falls, and volcanic gases, hence the need for hard hats, gas masks, and rugged clothing. In this shot he is about to descend further down into the crater towards an active lava lake, where the lava is even more fluid than at locations such as Kilauea, Hawaii.

via Aldo Kane (@AldoKane)

Mount Nyiragongo June 2017 Aldo Kane

You can read an article about Aldo's adventures here (via Faith Orr):

It's a jungle out there...

Continuing on the Mount Nyiragongo theme, here is Chasseur de Lave (the Lava Hunter)'s vlog from there, in which he explains the risks posed to people in the surrounding areas by both the volcano and a nearby lake. Note that this is not part of the BBC programme mentioned above.

via Chasseur de Lave (Thomas Delano)

 

Sinabung volcano, Indonesia (Philippa)
(Indonesian photographer) Endro Lewa continues to capture some great shots of Sinabung volcano, but this one in particular from 00:28 today (local time) shows off the incandescence from the collapsing lava dome.

Via Endro Lewa

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June 21, 2017


Popocatepetl volcano, Mexico
Explosion at 08:55
Via webcamsdemexico.com

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Sinabung volcano, Sumatra, Indonesia (Janine)
Another great photo from Endro Lewa facebook.com/endrolewa

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At night time you can see how many people live around Sinabung volcano + take the Milky Way as an extra :)

June 20, 2017


Yasur volcano, Vanuatu (Philippa)
Latest video blog from Chasseur de lave (Lava Hunter), who is currently doing a world tour of volcanoes. This installment is from Yasur volcano. (In French with English subtitles).

via Chasseur de lave (Thomas Delano)

 

Shiveluch volcano, Kamchatka, Russia (Philippa)
Satellite imagery captured another explosive eruption at Shiveluch volcano yesterday.

via Dan Lindsey (@DanLindsey77)

Dante's Peak versus Into the Inferno (Philippa)
What is your favourite volcano-related movie? Here are the stars of two: on the left - (Irish actor) Pierce Brosnan, whose character in Dante's Peak is a volcanologist with the US Geological Survey; on the right - (actual volcanologist) Professor Clive Oppenheimer, star of Werner Herzog's 'Into the Inferno'. The two met recently at the Biografilm Festival in Bologna, Italy.

via Clive Oppenheimer (@ultraplinian)

Pierce Brosnan Clive Oppenheimer

The link below is an article on Clive's work, including at (North Korean volcano) Paektu, and how he came to be involved in film making (via www.timeshighereducation.com):

The volcanologist who led Werner Herzog into the inferno

Mount Nyiragongo / Volcanologists at work, DRCongo (Philippa)
One thing which cannot be appreciated by looking at the photos here on Earthquake-Report.com is just
how difficult volcanology fieldwork can be. There's often much lugging of heavy equipment, which you have to hope will actually work at the volcano. You may need to wear protective clothing, such as the hard hat and gas mask modeled here by Professor Chris Jackson. The smell of the volcanic gases can be pungent and take weeks to wash out of clothes. Add to that a lack of bathrooms, camping in wilderness conditions, hiking across challenging terrain...and an additional requirement at Mount Nyiragongo for security due to the civilian conflicts. However, as Dr Kayla Iacovino points out, there is a certain camaraderie in such conditions, not to mention the amazing views.

via Christopher Jackson (@seis_matters)

via Kayla Iacovino (@kaylai) - seen here with (medical) Dr Xand Van Tulleken (@xandvt) and (cameraman) Ryan Atkinson (@ryanatkinsoncam) at Mount Nyiragongo.

https://twitter.com/kaylai/status/876519068060327936

June 19, 2017


Mount Nyiragongo, Democratic Republic of Congo (Philippa)
If you ask volcanologists which volcano, for them, is still a scientific mystery, Mount Nyiragongo is probably one of them. Strato-volcanoes, which are tall and steep-sided, are normally 'grey' volcanoes, i.e. made of very viscous (sticky), highly silicic lava, and which tend to be highly explosive. However, Mount Nyiragongo is different. Not only does it contain a crater lava lake, making it a 'red' volcano, but the lava is super fluid and more alkaline in composition.

In 1977 the walls of the crater ruptured. Within 30 minutes 3-5 million cubic meters of this very fluid lava had drained out, destroying nearby villages and reaching Goma, which is the nearest large city. To understand why this happened and to try to mitigate the risk should the crater walls collapse again, it is necessary to study Mount Nyiragongo. However, this is not so easy with limited resources for real-time monitoring and armed conflicts in the region.

After several years of attempts, some visiting scientists and a tv camera crew have finally been able to make it out there to collaborate with local volcanologists.

via Ryan Atkinson (@ryanatkinsoncam)

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Vulkanarium, Kamchatka, Russia
(Philippa)
Vulkanarium, Russia's first interactive museum on all things volcano related, has opened this week in Petropavlovsk-Kamchatsky, Kamchatka. The museum was the brain wave of scientist Sergey Samoylenko (formerly of the Institute of Volcanology and Seismology - Kamchatka branch) and features interactive exhibits that can be touched, felt, and heard as well as seen. The displays are labelled in English as well as Russian to encourage tourists to visit and learn about the many volcanoes in this region, including Sheveluch and Klyuchevskoy.

 

Sergey Samoylenko at the opening of Vulcanarium, located at (street) Klyuchevskoya 34, Petropavlovsk-Kamchatsky

Sergey Samoylenko at the opening of Vulkanarium, located at (street) Klyuchevskoya 34, Petropavlovsk-Kamchatsky

 

Sheveluch volcano, Kamchatka, Russia (Philippa)
Eruptions continue at Sheveluch volcano.

via the webcam of the Institute of Volcanology and Seismology - Kamchatka branch

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June 18, 2017


Kick 'em Jenny volcano, Caribbean (Philippa)
A great little Fact of the Day about an underwater volcano in the Caribbean with possibly the best name ever, Kick 'em Jenny.

via UWI Seismic Research (@SeismicResearch)

Masaya volcano, Nicaragua (Philippa)
Dr Tom Pering (University of Sheffield, UK) is vlogging this week from his fieldwork site of Masaya volcano, Nicaragua. Below is the video from the first day.

The UV (ultra-violet) spectrometer that Tom mentions in the video is used for remotely measuring the amount of sulfur dioxide (SO2) being emitted in the volcanic plume. Monitoring this particular volcanic gas over time provides information on the recharge of magma within the volcano.

Mount Pinatubo, Philippines (Philippa)
Just to put into context why the Mount Pinatubo eruption in June 1991 was so important in the advancement of volcanology and volcano monitoring, see this documentary, which features scientists from (Philippino volcano monitoring organisation) PHIVOLCS and members of the US Geological Survey's Volcano Disaster Assistance Programme (VDAP).

NOTE: volcanologists cannot predict when a volcano will erupt, but merely attempt to forecast the most likely outcomes given the interpretation of the different signals being monitored.

It is outlined in the video by Rick Hoblitt just how difficult it was for the volcanologists to accurately keep the government, local authorities, and military updated on the situation in the run-up to this particular eruption, due to Mount Pinatubo's teasing behaviour. However, this is one example of when the evacuation of the surrounding areas was called at exactly the right time.

via Geologyrocks / NOVA / YouTube:


Yellowstone volcano, Wyoming, USA
(Philippa)
Following on from yesterday's earthquake news at Yellowstone, and no, this does NOT mean that Yellowstone is imminently going to erupt, what would be more interesting is observing whether the seismic activity has altered the eruptive activity of the geysers.

Half of the worlds' geysers are located within Yellowstone National Park. They only form in very special conditions, and each geyser is completely unique.

Geysers are very sensitive to three things in particular: 1) the supply of ground heat, 2) the supply of water, 3) changes to their plumbing system, e.g. due to earthquakes.

If, for example, previously active geysers have suddenly stopped since the earthquake and its aftershocks, or the repose time (the time inbetween each geyser eruption) has suddenly changed, this can provide useful information as to which areas of the National Park have been affected by the earthquake.

One of my previous research areas was three of Yellowstone's geysers - Great Fountain Geyser, Sawmill Geyser, and Lone Star Geyser - which all display completely different behaviours. However, if you would like to know more or even to participate in some citizen science this summer, the people to contact are the geyser gazers of Yellowstone. Here is a documentary on them (via GeyserGazers / BBC):

Kilauea volcano, Hawaii, USA (Philippa)
An inspection yesterday of the pali (slope) on the coastal plain of Kilauea volcano showed that there are currently no active surface lava flows. Recent outbreaks appear to have stalled and cooled enough (although still hot!) to form a semi-solidified, grey surface. Lava is, however, still flowing under the surface and into the ocean at Kamokuna, continuing to form a lava delta.

via Hawaiian Volcano Observatory / USGS

Kilauea ocean entry 16June2017 USGS


June 17, 2017


Klyuchevskoy volcano, Kamchatka, Russia (Janine)
Explosive eruption of Klyuchevskoy volcano continues today

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Volcano activity for the week of June 6 until June 12, 2017

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 Bogoslof  | Fox Islands (USA)
AVO reported that a new lava dome at Bogoslof breached the surface of the ocean on or around 6 June, and was the first observation of lava at the surface since the start of the eruption that began in mid-December 2016. The dome was an estimated 110 m in diameter on 7 June, and then grew to 160 m in diameter by 9 June.
An explosive eruption began at 0318 on 10 June with a series of short infrasound signals which then, starting at about 0416, transitioned into several minutes-long continuous seismic and infrasound tremor signals. The events generated an ash-rich cloud that rose to an estimated altitude of 10.4 km (34,000 ft) a.s.l. and drifted NW. The Aviation Color Code (ACC) was raised to Red and the Volcano Alert Level (VAL) was raised to Warning. The eruption ended at 0528. Satellite data indicated that at least part of the volcanic cloud was more ash-rich than most in the current eruption period. On 11 June AVO noted no detectable activity in seismic or infrasound data after the event the day before. The ACC was lowered to Orange and the VAL was lowered to Watch. Satellite image acquired on 10 June and a photograph from an observer aboard a jet aircraft on 11 June suggested that the lava dome was no longer above the surface of the water, and was destroyed during the 10 June event.
A series of explosive events, each lasting 10-30 minutes, began at 1747 on 12 June and ended around 2035. Ash plumes rose 7.6 km (25,000 ft) a.s.l. and drifted SE. The ACC was raised to Red and the VAL was raised to Warning. At 0817 on 13 June a six-minute-long explosion was detected in seismic and infrasound data. A plume was not observed, likely because it was too small or below detection limits. The ACC was lowered to Orange and the VAL was lowered to Watch.

Karymsky  | Eastern Kamchatka (Russia)
KVERT reported that a thermal anomaly over Karymsky was identified in satellite images during 3-8 June. Explosions on 8 June generated ash plumes that rose 2-3 km (6,600-9,800 km) a.s.l. and drifted 70 km E, SE, and SW. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Pavlof  | United States
On 7 June AVO reported that during the past several days an increase in low-frequency earthquake activity was detected at Pavlof. This kind of activity can sometime precede eruptive episodes. In addition, several short-duration tremor bursts were observed, and a pilot reported a possible ash cloud to 1.2 km (4,000 ft) a.s.l. Infrasound data from instruments on the volcano and from a more distant network in Sand Point showed no evidence of significant explosive activity. AVO noted that since activity prior to eruptions of Pavlof had always been very subtle, they increased the Aviation Color Code to Yellow and the Alert Level to Advisory based on these observations. During 8-9 June gas emissions from the summit were observed in web camera images and by local observers in Cold Bay (60 km SW). AVO noted that vapor emissions (with or without minor amounts of volcanic ash) are common and may occur from the summit vent at any time.

Rincon de la Vieja  | Costa Rica
OVSICORI-UNA reported that a small, minute-long, phreatic eruption in Rincón de la Vieja's crater lake began at 0542 on 11 June. Poor visibility prevented visual confirmation of plume details, though the Washington VAAC reported that a thermal anomaly was present in satellite images. A small seismic signal that lasted less than one minute was recorded at 2106 on 12 June. The signal possibly represented an emission, though it was not confirmed.

Sheveluch  | Central Kamchatka (Russia)
KVERT reported that during 3, 5, and 7-8 June powerful explosions at Sheveluch generated ash plumes that rose as high as 8 km (26,200 ft) a.s.l. and drifted 1,554 km SW, S, and SE. Pyroclastic flows traveled 10 km. Ashfall was reported in Klyuchi Village (50 km SW) on 8 June. A thermal anomaly was identified daily in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Information provided by the Smithsonian Institute

Volcano Hazards Program cuts (Janine)

Volcano Hazards Program cuts

Yellowstone, USA

Moderate earthquake in the North Western part of Yellowstone National Park - June 16, 2017

Mount St Helens, USA (Philippa)
Portland-based photographer Kati Dimoff looks for rolls of undeveloped film in cameras from Goodwill (charity shop), and discovered this hidden gem: a shot of one of the Mount St. Helens eruptions! Several local residents contacted the newspaper that Kati published this and several other photos in to say that they think the plume corresponds to an eruption which occurred on 22nd July 1980.

The full article can be found here:
Quest to develop abandoned film uncovers Mount St. Helens eruption photos

Mt St Helens 22July1980 Kati Dimoff

June 16, 2017


Mount Pinatubo, Philippines
USGS : On this day in 1991 Mount Pinatubo, Philippines erupted producing an ash cloud 100's of miles across
Via James Reynolds : If Earth Uncut TV had been around in 1991 (I was only 8!!) I'm sure I'd have been there
We believe him!

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Mount Rainier, Washington, USA (Janine)
Rainier volcano is one of the most dangerous in the world because of lahar threat, and nearby populations

Shiveluch volcano, Kamchatka, Russia
Via Simon Carn

June 15, 2017


Yasur volcano, Vanuatu (Janine)
Unbelievably close call. So lucky. They should not have been there.
Via Benjamin Simons

Historic eruption of the Pinatubo volcano, Philippines (Janine)
Eruption Cloud from Clark Air Base  in 1991

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Bogoslov volcano, Alaska, USA
Eruption update 17:05 UTC : A six-minute-long explosion was detected in seismic and infrasound data at 8:17 AKDT (16:17 UTC). There have been no satellite images of a resulting volcanic cloud, and its height is currently unknown. Lower level winds are currently to the northwest, and higher level winds to the southeast, over southern Unalaska Island

Bogoslov volcano, Alaska, USA
Eruption update 13:08 UTC : The explosive eruptive activity that began tonight at 1:47 UTC June 13 (17:47 AKDT June 12) has ended or has paused. This sequence thus far is characterized by a series of explosive events lasting 10-30 minutes long, emitting volcanic clouds that rose to a maximum height of 25,000 ft asl, and dissipated within about 30 minutes. The last major pulse of explosive activity ended at 04:35 UTC June 13 (20:35 AKDT June 12). Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Additional explosions producing high-altitude volcanic clouds could occur at any time.
The Aviation Color Code remains at RED and the Alert Level remains at WARNING. AVO will continue to monitor the volcano using all available data streams.

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Photo of Bogoslof Island, June 11, 2017. Photo taken from an Alaska Airlines jet enroute to Adak, by Cyrus Read, USGS/AVO

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June 13, 2017


Iceland historic events
Fissure eruption of Laki volcano as painted in 1783 shows swollen rivers of red-glowing lava
Via David Bressan

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Kilauea volcano, Hawaii, USA (Janine)
Tourist enjoying "the day of their life" watching the pahoehoe lave streaming into the pacific ocean.
If it's your turn one of the coming days or weeks, please read these safety guidelines carefully
Photo from Janice Wei via Hawaii Volcanoes National Park

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Karymsky volcano, Kamchatka, Russia (Janine)
Landsat satellite image showing ash deposits on the snow + the caldera lake

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Shiveluch volcano, Kamchatka, Russia (Janine)
Explosive event reaching 8 km high
Via webcam Kvert Russia

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Sinabung volcano, Sumatra, Indonesia (Janine)
Glowing and growing dome + an explosive event
Via the great images of Andrew Lewa

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June 12, 2017


Meidob Volcanic Field, Sudan
This photograph of the central Meidob Volcanic Field was taken by an astronaut onboard the International Space Station. The entire field covers an area of approximately 5,000 square kilometers (approximately 1,930 square miles) of western Sudan. There are numerous vents—nearly 700—that are believed by geologists to be less than 6 million years old. The most recent eruptive activity in the field has been dated to within 500 years of 2950 BCE, or roughly spanning the time of the unification of the Upper and Lower kingdoms of ancient Egypt.
While the majority of the Meidob field is comprised of volcanic rocks with significant iron and magnesium (basalt), the central region depicted here is dominated by volcanic rocks that have relatively higher amounts of sodium and potassium than basalt (known as trachyte and phonolite to geologists). This part of the volcanic field is also distinctive for the landforms that are common here, such as explosively-formed maar craters, lava domes built by viscous lava flows, and scoria or cinder cones formed around a single volcanic vent.
Via NASA Earth observatory

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Cordon Caulle volcano, Chile (Philippa)
The image below shows (PhD student) Nathan Magnall (@NathanMagnall) whilst out on fieldwork at Cordon Caulle volcano in Chile. His research is on how the lavas at this volcano flow. Cordon Caulle erupts rhyolitic lava, which is much more viscous (sticky) because it contains a higher percentage of silica than the basaltic lavas erupted at volcanoes such as Kilauea in Hawaii. The reason for this difference in composition is because of the volcanoes' locations: Chile lies above a subduction zone, whilst Hawaii has formed from a mantle plume (hot spot).

via Hugh Tuffen (@HTuffen)

Cordon Caulle Chile Nathan Magnall

Poas volcano, Costa Rica (Philippa)
Several volcanologists have started to use drones in their research on volcanic plumes, including on Iceland, Montserrat, and Guatemala. But did you know that one group of volcanologists has also attempted to use an aquatic drone to investigate volcano crater lakes? Being able to monitor both the pH levels of the water and the bathymetry (depth profiles) of such crater lakes is one useful method for monitoring changes in these volcanoes, particularly prior to an eruption when greater amounts of volcanic gas are being emitted and/or the depth of the crater lakes become reduced. However, the water in volcano crater lakes is incredibly acidic and toxic, which makes it dangerous for the scientists themselves to go onto the crater lakes** in boats with the monitoring equipment. Hence testing the effectiveness of unmanned aquatic drones.

** If you have ever seen the movie Dante's Peak - the part where the grandma suffers acid burns after jumping into the lake to tow the boat - you will know what we mean!

The video below was shot on fieldwork last summer at Poas volcano in Costa Rica.

Poas has since erupted, which has completely changed the shape of the crater and dried up the lake, but the volcanologists hope to return in the future.

The full article can be found here (via @INVOLCAN):
Testing an acquatic drone at Poas volcano

Klyuchevskoy Volcano, Kamchatka, Russia
Image from 07:20 this morning. LIVE version can be followed via the IVS webcam
It's June, so the webcam will be almost 24 hours a day in daylight. Enjoy it.
Via Institute of Volcanology and Seismology - Kamchatka branch

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Additional at Klyuchevskoy (Philippa)
The image below of Klyuchevskoy volcano was captured via the Institute of Volcanology & Seismology (Kamchatka branch)'s long-range webcam overnight yesterday. It was just dark enough for the Moon to be visible (above the volcano).

Via @CultureVolcan

Klyuchevskoy IVS 10June2017

Bogoslov volcano, Alaska, USA
Eruption update 07:07 UTC :No further ash emissions have occurred at Bogoslof Volcano since the explosion on Saturday, June 10 at 3:18 AKDT (11:18 UTC) and seismicity remains low. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.

Pavlof volcano, Alaska, USA (Philippa)
Great shot looking westwards from Unga island of a smouldering Pavlof volcano (to the left) and Pavlof Sister (to the right).

Via Carl Schaefer / USGS

Pavlof and Pavlof Sister 08June2017 Carl Schaefer USGS

June 11, 2017


Bogoslov volcano, Alaska, USA
Eruption update 13:35 UTCAviation alert code has been elevated to RED
An explosive eruption is detected in multiple data streams. Small explosions were first observed on infrasound stations located on nearby Islands beginning at 11:18 UTC (3:18 AKDT). Activity transitioned to continuous seismic tremor at about 12:16 UTC and is ongoing. An eruption cloud has been observed in satellite data and lightning has been detected. AVO is raising the Aviation Color Code to RED and the Volcano Alert Level remains at WARNING. More information will be released as it becomes available.
Ash clouds are reaching 10,000 meters
Eruption update 14:30 UTC : The explosive eruptive activity that occurred this morning from about 3:18 to 5:28 AKDT (11:18 to 13:28 UTC) has ended. This sequence began with a series of short infrasound signals and then, starting at about 4:16 AKDT (12:16 UTC), transitioned into several minutes-long continuous seismic and infrasound tremor signals. Satellite images of the resulting cloud show it reached as high as 34,000 ft asl and drifted to the northwest. Satellite data also indicate that at least part of the volcanic cloud was more ash-rich than most of those seen previously in the Bogoslof eruptive sequence to date. This suggests that the eruption may have destroyed the lava dome that was emplaced earlier this week.
Since 5:28 AKDT (13:28 UTC), seismicity as detected on neighboring islands has been quiet, no lightning has been detected, and satellite images show no additional emission from the volcano.
Source AVO Alaska

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Klyuchevskoy volcano, Kamchatka, Russia (Philippa)
Image (below) showing Klyuchevskoy volcano in eruption phase. This screenshot was taken at 10:30:00 UTC today via the IVS webcam.

Via Institute of Volcanology and Seismology - Kamchatka branch

Klyuchevskoy Kamchatka 10June2017 103000 IVS


Sheveluch volcano, Kamchatka, Russia
(Philippa)
Eruption from earlier today at Sheveluch volcano, Kamchatka, caught on the Institute of Volcanology and Seismology webcams.

Via @CultureVolcan

Sheveluch 10June2017 IVS

Mount Yasur, Vanuatu (Philippa)
See below for some video footage from Mount Yasur. Although this is from 9 years ago, the eruptive style of Yasur is the same today: frequent, small-scale explosive eruptions of pyroclasts (hot rocks) from within the crater vent.

Some interesting features to note:

* The audio might appear as if it is not synced with the video, but this is because (in physics terms) light travels faster than sound, so you will see the activity before you hear it.

* This particular volcano produces shock waves, which you can see as a ripple effect in the air as well as hear in this video. These are produced because the gas, essentially a volcano fart, is being expelled from the crater vent at a faster rate than the speed of sound. This is similar to the sonic booms produced by fighter jet engines.

* Listen out about half-way through for the explanation from the local guide as to why the lava is expelled from the vent in the form of pyroclasts rather than as spatter or other lava textures. The video also shows an example of one of these pyroclasts, but this must be an old, cooled one, as young, newly-erupted pyroclasts are too hot to touch!


Via Ripple Tech (17 September 2008)


Bogoslof volcano, Alaska, USA
(Philippa)
Satellite radar images, courtesy of the Italian Space Agency show that there is now a lava dome growing within Bogoslof volcano in Alaska. It remains to be seen whether this will mark a transition next from large scale, explosive phreato-magmatic (interaction of water and magma) eruptions to smaller scale eruptions with further dome growth.

via @USGSVolcanoes and Alexa van Eaton (@volcaniclastic)

Bogoslof volcano 31May2017 USGS ISA


Fuego volcano, Guatemala
(Philippa)
A meme from images taken by (monitoring agency) INSIVUMEH's webcams shows that Fuego volcano in Guatemala has once again resumed 'normal' activity: small, explosive eruptions. Note that this footage has been sped up several times.


via Greg Waite (@Greg_Waite) and INSIVUMEH (@insivumehgt)

Bromo volcano, Indonesia (Philippa)
Eruption at Bromo volcano on East Java, Indonesia, caught via webcam.

via (monitoring agency) PVMBG

Bromo 10June2017 114020UTC PVMBG

June 10, 2017


Kilauea volcano, Hawaii, USA
Six waterspouts due to intense heat from lava flow. Kilauea Volcano, Hawaii. Photo by Bruce Omori (@BruceOmori)

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Sinabung volcano, Sumatra, Indonesia
This lava dome regularly collapses, sending Pyroclastic Density Currents down the volcano slopes
Via Ruth Dawn and Dr. Rebecca Williams

Schermafbeelding 2017-06-09 om 18.02.14

Volcano activity for the week of May 31 until June 6, 2017

Schermafbeelding 2017-06-09 om 17.57.35-compressed

Bulusan  | Luzon (Philippines)
PHIVOLCS reported that a minor phreatic eruption at Bulusan occurred at 1029 on 5 June and was recorded by the seismic network for 12 minutes. The eruption could not be visually observed due to dense weather clouds covering the summit. Minor ashfall, a sulfuric odor, and rumbling sound were reported in barangays Monbon and Cogon in Irosin, while sulfuric odor was noted in barangay Bolos, Irosin. The Alert Level remained at 1, indicating abnormal conditions and a 4-km-radius Permanent Danger Zone (PDZ).

Copahue  | Central Chile-Argentina border
OVDAS-SERNAGEOMIN reported that webcams recorded an increase in ash emissions at Copahue on 4 June. There were no significant changes in the magnitude or number of earthquakes recorded by the seismic network. The report noted that due to inclement weather making visual observations difficult, the observatory did not know if the ash emission began in the early hours of 4 June, or the day before. The Alert Level was raised to Yellow (the second lowest on a four-color scale); SERNAGEOMIN recommended no entry into a restricted area within 1 km of the crater.

Karymsky  | Eastern Kamchatka (Russia)
Based on Tokyo VAAC data, KVERT reported that an explosive eruption at Karymsky began at 0040 on 4 June. An ash plume rose 3 km (9,800 ft) a.s.l. and drifted over 40 km NE. The Aviation Color Code was raised to Orange (the second highest level on a four-color scale). Less than four hours later ash plumes rose 2 km (6,600 ft) a.s.l. and drifted 85 km ENE. The VAAC reported that a possible ash plumes rose 4 km 13,000 ft) a.s.l. during 5-6 June and drifted E.

Marapi  | Indonesia
PVMBG reported four explosions at Marapi on 4 June, each lasting less than one minute. The explosions occurred at 1001, 1011, 1256, and 1550, and produced dense ash-and-steam plumes that rose 300 m, at least 700 m, 200 m, and 250 m above the crater, respectively. The plumes drifted E. Ejected bombs were deposited around the crater. Seismicity increased after the explosions. Minor ashfall was reported in the Pariangan District (8 km SSE), Tanah Datar Regency. The Alert Level remained at 2 (on a scale of 1-4). Residents and visitors were advised not to enter an area within 3 km of the summit.

Sheveluch  | Central Kamchatka (Russia)
KVERT reported that during 26-27 and 31 May powerful explosions at Sheveluch generated ash plumes that rose 8 km (26,200 ft) a.s.l. and drifted 550 km ESE and about 650 km WSW. A thermal anomaly was identified in satellite images during 26 May-2 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Information provided by the Smithsonian Institute

Vesuvius volcano, Italy
Saviero Della Gatta, eruption of Vesuvius in 1794, showing volcanic plume & lightning
Via David Bressan

Schermafbeelding 2017-06-09 om 17.43.34

Kilauea volcano, Hawaii, USA (Armand)
Night webcam image from the crater lake.
Many years ago i flew with a helicopter until the edges of the crater lake (when it was still allowed for sightseeing helicopters) feeling the radiation of the magma. We arrived like it now can be seen on this image. While we were hanging there, suddenly the magma veins opened up and it became an almost complete red magma lake with suddenly fountains of magma several meters high. An experience of a lifetime. This all happened before the digital imagery and i was so stunned that i forgot to take slide pictures. :).
I returned another 3 times but never had that experience again.
Courtesy USGS webcam

Schermafbeelding 2017-06-09 om 11.36.20

June 9, 2017


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Volcano news - Archive Nr. 7
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