Oost-Russische vulkaanuitbarstingen: Wereldwijde zorgen?

In de afgelopen zes maanden zijn diverse vulkanen in het oosten van Rusland tot uitbarsting gekomen. Veelal kwamen ze niet in het nieuws omdat ze in afgelegen gebieden lagen en hooguit had het vliegverkeer er last van. Volgens geleerden zijn de vulkanen echter veel actiever dan normaal en dat baart zorgen. In de afgelopen maanden zijn er tonnen stof en as de lucht in geslingerd door de vulkanen. Deze grote hoeveelheden stof zouden de Arctische wind van de Noordpool hebben beïnvloed en daardoor grote delen van Noord Amerika en Europa in de kou hebben gezet.

In totaal zijn er daar zo'n 160 vulkanen waar er nog altijd 29 actief van zijn. Nog altijd worden er grote hoeveelheden as en stof de atmosfeer in gespoten en de verwachting is dat dit te merken zal zijn in de oogsten van dit jaar. Die zullen schraler zijn waardoor de prijzen nog verder omhoog zullen gaan. Als de uitbarstingen doorgaan is de verwachting dat de komende winter ook weer bar koud gaat worden.



De gezamenlijke uitbarstingen komen op echter op een bijzonder slecht moment. Door een extreem sterke La Nina is de Stille Oceaan op vele plaatsen veel koeler dan normaal, mede daardoor zien we grote en zware stormen rondom Australië, die gepaard gaan met grote overstromingen. Tegelijkertijd is de Atlantische Oceaan veel warmer dan normaal.

De combinatie van deze twee is een slecht teken voor de voedsel- en mijnbouw industrie. De verwachting is dus opnieuw dat deze beide sectoren zwaar getroffen gaan worden. Vorig jaar was al erg, maar ook dit jaar kunnen deze sectoren hun borst natmaken. Vooral het eerste kwartaal van 2011 schijnen de omstandigheden niet best te zijn.

De vulkanen zijn zodanig actief dat het dus lijkt dat de Arctische winden verder zuidwaarts zullen komen. Dit kan drastische gevolgen hebben voor veel gebieden op aarde. Volgens de geologen is de vulkaangroep op Kamsjatka (Rusland) altijd wel actief, maar de laatste maanden is het ronduit zorgwekkend. Sinds november zijn onder andere de Kizimen, Sheveluch, Karymsky, en Kliuchevskoi onophoudelijk actief.

Vulkaanstof en -as weerkaatst het zonlicht en koelt de lucht daaronder. Daardoor zakt de luchtdruk waardoor de winden en windrichtingen anders kunnen lopen. Kort gezegd is de
"ijzige noordpool wind, die normaal 'opgesloten zit in het noorden', op weg naar het zuiden".

Tot nu toe heeft dit gewijzigde patroon vooral in december toegeslagen. Groot-Brittannië was bijvoorbeeld kouder op 1e kerstdag dan Rusland, terwijl ook Noord Amerika bizarre hoeveelheden sneeuw gezien hebben. En vooral dat laatste lijkt nog niet afgelopen.

Australie's tarweoogst was al 10% lager dan normaal, de ergste daling in 100 jaar. Rusland denkt 80-85miljoen ton graan te oogsten, wat iets meer is dan vorig jaar, maar veel minder de 110m uit 2008. De voedselprijzen zijn wereldwijd al gestegen mede door de ongekende droogtes in andere delen van de wereld zoals Argentinië en de zware overstromingen in Venezuela en Brazilië, net als in China.

Wat er uiteindelijk voor dit jaar op het programma komt te staan blijft onduidelijk. Volgens Browning Gariss moeten we afwachten wat de vulkanen gaan doen, dat blijft echter onmogelijk te voorspellen.

Uit: Russian Volcanoes cause global concern

Zie ook
[Vulkanen] The ring of fire #5: Het blijft actief
Spectaculaire uitbarsting vulkaan Kirishima in Japan
Orkaan Yasi #2: Queensland maakt de schade op
Winter in de V.S. (2010/2011)
Drie van de volgende vijf winters kunnen kouder zijn (VS)
Overstromingen Australie: Ergste in honderd jaar
El Niño/La Niña: Terug van weggeweest?

In het centrale vulkanentopic hebben we vaker gemeld dat er activiteit in het oosten van Rusland was. Echter zou het echt zulke dramatische gevolgen hebben? Heb nog geen cijfers kunnen vinden die dit onderbouwen. Misschien dat er nog wat nadere informatie opduikt, maar het is iets wat niet ondenkbaar lijkt.

Als de activiteit onverminderd doorgaat vraag ik me af of dit inderdaad consequenties heeft voor onze zomer, laat staan voor de winter, eind 2011

[ Bericht 1% gewijzigd door Frutsel op 20-03-2012 12:28:36 ]

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Op maandag 7 februari 2011 12:54 schreef aloa het volgende:
Veel vulkaanuitbarstingen vorig jaar en dit jaar dus ook!
In welk gebied in Rusland staan deze vulkanen?

Het oosten, Kamsjatka schiereiland enzo.

De IJslandse vulkaan werd niet genoemd. Vraag me af of die ook een rol heeft gespeeld. Daar is toch ook flink wat as/stof de lucht in geblazen. En ook voor langere tijd aaneen.

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We're hearing all kinds of reasons for the cold snap and severe weather globally, with the result that the global-warming thesis is being raked over the coals, so to speak. But is anyone discussing the Icelandic volcanic eruption of last year as the cause? It seems as if most of the world has forgotten the eruptions of Eyjafjallajökull, "which, although relatively small for volcanic eruptions, caused enormous disruption to air travel across western and northern Europe over an initial period of six days in April 2010."

If history is an example, it is quite possible that this season's arctic freeze in the Northern Hemisphere, as well as other weather patterns such as the cyclone in Australia, are results mainly of this recent volcanic event on Iceland. Indeed, this phenomenon is common enough to have a name, "volcanic winter."

uitbarstingen gaan onverminderd voort

Inmiddels zijn er in japan twee vulkanen actief... er is er daar eentje bijgekomen

Volgens mij staan die ook in het centrale vulkanentopic (zie OP) gelinkt.
Zijn inderdaad handige sites, thx

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Op dinsdag 8 februari 2011 11:55 schreef cynicus het volgende:

Ik denk dat dit een broodje aap verhaal is gebouwd op de opinie van een non-expert. Always check the sources...

Je heet dan ook niet voor niets cynicus

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Kizimen eruption continues: threat to wild reindeer
The continuing eruption of the Kizimen Volcano in Kamchatka poses a threat to wild reindeer which are listed as endangered species.

As the volcano continues to spew ash for hundreds of kilometers, reindeer are leaving their traditional habitat for lack of fodder.

Reindeer moss, the animals’ only food in winter, is buried under a thick crust of ice and ash.

Experts from the Krontosky Nature Reserve warn that Kamchatka’s less than 1,000 reindeer may die out as a result of the eruption.

Kizimen, one of the 29 acting volcanoes in Kamchatka, has been spewing ash since December 2010.

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More ash in Kamchatka
The Shiveluch volcano has spewed a new plume of ash 7.5 km above the Kamchatka Peninsula in Russia's Far East. The ash cloud sprawled 143 km to the northwest.

According to ITAR-TASS report on Monday, the authorities had announced the orange alert level warning aircraft about volcanic dust and gases in the air. At present, there is no risk to human health.

Shiveluch is one of Kamchatka's largest volcanoes. It rises more than 3,200 meters above the sea level.

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Volcano in Russia's Far East spew ash to 6,000 meters

VLADIVOSTOK, May 3 (Xinhua) -- The Shiveluch volcano on the Kamchatka peninsula in Russia's Far East, has spewed ash to an altitude of 6,000 meters above sea level, local media reported Tuesday.

The seismic activity at the volcano intensified at 4:30 local time Tuesday (1730 GMT Monday) and reached its peak at 6 a.m. to 8 a.m. local time (1900 to 2100 GMT Monday) before gradually abating, the RIA Novosti news agency reported.

Though experts said there was no danger for local communities, an aviation "orange" alert has been assigned to the area.

Meanwhile, Kizimen, another volcano on the peninsula, has become active and spewed ash into the air of up to 7,000 meters.

ze gaan rustig verder

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Kamchatka volcano continues ash spewing
An active volcano on Russia's Kamchatka Peninsula is currently spewing plumes of ash at a height of up to 9 kilometers (5.6 miles), Russian scientists reported on Tuesday. Scientists have registered two strong eruptions in the last 24 hours. The 3,283-meter (10,771-foot) Shiveluch volcano increased activity in May 2009 and periodically spews ash from three to eight kilometers. Clouds of volcanic ash could pose threat to air traffic because the tiny particles can cause problems with aircraft engine turbines. There are more than 150 volcanoes on Kamchatka, and 29 of them are active.

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Large explosive eruption is likely at Russian volcano
One of Russia’s largest and most active volcanoes erupted Friday sending ash more than 10,000 feet into the air. Officials said a much larger eruption is “likely”.

Shiveluch (also spelled Sheveluch) is one of the largest and most active volcanoes on Russia’s Kamchatka Peninsula. It has been spewing ash and steam intermittently—with occasional dome collapses, pyroclastic flows, and lava flows, as well—for the past decade.

Shiveluch has had over 60 large explosive eruptions during the past 10,000 years. Catastrophic eruptions took place in 1854 and 1956, when a large part of the lava dome collapsed and created a devastating debris avalanche. The last significant eruption ocured in late May 2011 resulting in ash being sent to a height of 7.5 kilometres above sea level. The ejection was accompanied by an earthquake at the volcano that lasted more than 10 minutes.

According to Kvert, which monitors Kamchatkan and Northern Kuriles Volcanic Activity: “Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800 ft (10 km) ASL could occur at any time. Ongoing activity could affect international and low-flying aircraft. Moderate seismic activity of the volcano continues. According to seismic data, ash plumes rose up to 32,800 ft (10.0 km) ASL on June 15. According to visual data, moderate gas-steam activity of the volcano was observing on June 10 and 12; clouds obscured the volcano on the other days of week. According to satellite data, a gas-steam plume containing small amount of ash extended about 16 mi (26 km) to the north-west from the volcano on June 10. A thermal anomaly was registered over the lava dome on June 10 and 12-13; clouds obscured the volcano on the other days.”

The Kamchatka Peninsula, located along the Pacific “ring of fire,” includes more than 100 volcanoes. While most of these volcanoes are not actively erupting, many are considered dangerous due to their eruptive history and their proximity to population centres and air travel corridors.

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Kamchatka volcano belches out ash to 10 km above sealevel

Petropavlovsk-Kamchatsky, Jun 21 (Itar-Tass) One of the major volcanoes in the Kamchatka Peninsula, the Shiveluch, has belched out ash to the elevation of 10 kilometers above sea level, sources at the Kamchatka affiliation of the Geophysical Service of the Russian Academy of Sciences said today. A total of two series of local seismic events lasting from 40 minutes to 60 minutes have been registered at the volcano. According to seismic surveyors, they might have been accompanied by the exuding of ash to the elevations of 6.7 kilometers and 10 kilometers respectively. The ash columns could not be observed visually since the summit of the volcano is overcast with clouds. There has been no fallout of volcanic ash in the nearby population centers, including the town of Klyuchi, which is located some 30 kilometers away from the Shiveluch's foothills. A senior researcher at the Geophysical Service said the trail of ash had shifted northwards from the volcano where there are no townships of villages. In the meantime, volcanic dust and gasses may pose danger for aviation, and all the services and agencies concerned have been notified about it. The Shivelush is Kamchatka's northernmost active volcano.Its absolute elevation point is located at 3,283 meters above sea level. The absolute elevation point of the volcano's active part, known as Molodoi Sheveluch, is found at 2,500 metes above sea level, and its crater has the diameter of 1.5 kilometers. Molodoi Sheveluch became active in September 1980. It is subject to permanent observation for 30 years by now. According to expert assessments, the volcano does not pose any risk for the Kamchatkan population centers at the moment. (Itar-Tass)

]

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Kizimen erupts again
Hot lava has flown down the eastern slope of a volcano called Kizimen, on the Kamchatka Peninsula in the Far East of Russia.

The ash plume stretches for 15 kilometers and is a threat to aviation, according to the Institute of Volcanology and Seismology of the Far East District.

Kizimen is one of 29 active volcanoes in Kamchatka and it became active in July of last year after 80 years of "silence."

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Plumes of ash and hot gas jetting out of Kizimen volcano on Russian Kamchatka Peninsula have spread more than 15 km eastward as eruption continues. Giant columns of steam and ash shot up to 500 meters above the crater. Ash plumes have spread more than 15 km eastward of the volcano. Ash plumes, poisonous to human and animals, can also pose threats to aviation as fallen ash particles may cause mechanical problems and bring down airplanes. Kizimen is one of 29 active volcanoes in Kamchatka.

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Eastern Russia volcano blows more ash
MOSCOW, Aug. 14 (UPI) -- Scientists said ash continued to billow from a volcano in Russia's Far East, which could have an effect on international air traffic in the region.

The Shiveluch volcano on the Kamchatka peninsula was pushing ash as high as 6,000 meters (20,000 feet) and creating "light-intensity" tremors on the ground lasting as long as 40 minutes, the Far Eastern Institute of Volcanology and Seismology said in a written statement.

No towns in the area were considered threatened by the ash fall.

Shiveluch has been erupting periodically since 2009. The size of the mountain's crater has grown 50 percent in that period, RIA Novosti said Sunday.

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Kizimen spews ash 7km high
The Kizimen volcano on Kamchatka Peninsula is spewing ash plumes to a height of more than 7 kilometres. It is reported to be dangerous to aircraft. Small abrasive particles of volcanic ash can get into the aircraft mechanisms, causing the plane to crash.

The volcano has been assigned the highest, red hazard code to aviation. According to scientists, the erupting volcano presently does not pose any threat to the public.

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Bezymianny volcano might be close to an eruption
The remote Bezymianny volcano in Kamchatka might be close to an eruption, as its seismic activity is continuously increasing, the Russian Institute of Volcanology and Seismology (KVERT) reported yesterday.
Strong ash explosions up to 42,640 ft (13 km) a.s.l. are possible at any time. Ongoing activity could affect international and low-flying aircraft.Seismic activity began to increase on February 12, when about 7-19 weak seismic events were registered each day until 29 Feb.
During 1-5 March, this number increased to about 25-43 weak seismic events and episodes of volcanic tremor. KVERT warns that the activity might signal a buildup towards a larger eruption.
According to satellite data, both size and brightness of a thermal anomaly (a growing lava dome) at the summit abruptly increased on 2 March and continues to increase.

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Bezymianny on Red Alert
Bezymianny: KVERT placed this active Kamchatka volcano (right) on Red Alert status over the last few days after a sharp and sustained increase in seismic activity. They also noted a sizable increase in size and temperature of the thermal anomaly seen at the summit of the volcano (observed by satellite), suggesting that new, hot magma is very close/at the surface. Put these two things together and KVERT suggests that “strong ash explosions up to 43,000 ft (13 km) a.s.l. possible at any time during the next 24 hours.” It has been about 11 months since the last explosive eruption at Bezymianny – and if anything does occur, you can see if the Bezymianny webcam is operating to catch a glimpse.

Linkje naar webcam

Ach ja, je raakt er aan gewend en ja soms is dat best vervelend

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Russian volcano spews ash 9500 meters in the air
Russia’s northernmost active volcano is churning out ash to a height of 9,500 meters (over 31,000 feet) in the country’s Far East, local scientists reported on Tuesday. The 3,283-meter (10,771-foot) Shiveluch volcano increased activity in May 2009 and has been periodically spewing ash from three to ten kilometers. “A powerful eruption of ashes took place 05.59 a.m. local time [17:59 GMT on Monday], a source at the Far Eastern Institute of Volcanology and Seismology said. The official said the column of ashes could be clearly seen from a distance of 40 kilometers spreading to the east. “It is the most powerful eruption this year,” the expert said. According to scientists, the volcanic activity over the past two-three years has significantly altered the contour of the volcano with the crater increasing in size by 50% and the slopes becoming far steeper than before. Although the current eruption poses no immediate threat to nearby settlements, the ensuing ash fallouts could be hazardous to health and the environment. The clouds of volcanic ash could also pose threat to air traffic because the tiny particles cause problems with aircraft engine turbines

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De uitbarsting van vulkaan Tolbachik in Rusland trekt veel bekijks. Gas en as worden 4 kilometer de lucht in gestoten, lava bereikt een hoogte van zo'n 150 meter. De uitbarsting begon op 27 november, na een rustige periode van 36 jaar.

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Kamchatka and Kuril Island's activity update

With Kamchatka currently being one of the most volcanically active places on the planet, here is a summary of the current volcanic activity in the past week in the region by the Kamchatkan Volcanic Eruption Response Team.

Lava dome growth and effusion of a viscous lava flow continue at Shiveluch volcano, accompanied by moderate fumarolic activity and incandescence. Satellite imagery showed a thermal anomaly over the volcano all week.

Eruption's at four cinder cones producing fluid lava flows on the S part of the fissure on the flank of Tolbachik continues. A large thermal anomaly on the N part of the fissure was detected on satellite imagery. Gas and ash plumes from Tolbachik rose to heights of 4 KM a.s.l.

A lava flow continues to extrude on the east flank of Kizimen volcano, accompanied by incandescence, hot avalanches and strong gas and steam activity. Two new lava flows were detected on the SE flank of the volcano by satellite data. A thermal anomaly was also observed.

Possible ash eruptions from Karymsky volcano were detected in the past week with ash plumes possible rising to a height of 2.5 KM a.s.l. A thermal anomaly was detected at the volcano on the 11 and 14 January.

Strombolian activity continues at Kliuchevskoi volcano. This was accompanied by gas and steam activity from the summit and incandescence. Thermal anomalies were detected on 11 and 13 Janaury.

A viscous lava flow continued to effuse from the flank of the lava dome at Bezymianny volcano. Weak gas and steam activity were observed. A thermal anomaly was detected on the volcano on January 11 and 13.

Gas and steam activity was observed from Gorely on 10 and 12 January.

Gas and steam activity were noted from Chirpoi volcano on January 9 and 11.

A thermal anomaly and strong gas and steam activity were noted from Medvezhia volcano on January 11.

Behoorlijk wat activiteit op Kamchatka en de Koerillen... schijnt de meest actieve vulkaanplek van dit moment te zijn. Negen lees ik er hier boven al