Volcano watch

[Sevan Makaracı]

Japan: A new island appears in the Ogasawara Islands - November 2013

Active volcanoes (Sep 28, 2012)

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"Of course all volcanoes will explode, as this is going to be a very severe pole shift. What about the months and years preceding the pole shift? It is no secret that Mammoth Lake and the caldera of Yellowstone are warming up, and the populace has been prepared for these occurrences by the movie Volcano where there, in the middle of LA, lava is bubbling up. In fact, there is a fault line running from the approximate San Diego/LA area, up into the Sierras, and this is liable to rupture rather violently during one of the quakes that precedes the pole shift by some months. Volcanic eruptions from that area in the Sierras can be expected. Will Mount St. Helen erupt? All volcanoes that have been active within the memory of man will begin spewing and burping and oozing, and many that were not expected to become active will reactive. "   ZetaTalk - Feb 15, 2000

[Howard]

Violent Fuego Volcano Eruption in Guatemala - 33,000 Expected to Evacuate (Sept 13) - 

http://worldnews.nbcnews.com/_news/2012/09/13/13847747-33000-told-t...

A Guatemalan volcano erupting Thursday for the sixth time this year triggered evacuations of several towns, with more than 33,000 expected to flee.

The Fuego volcano started spewing lava some 2,000 feet down two slopes, while ash flew two miles upwards. Ash was covering homes and buildings several miles away, the government's disaster agency said.

While Fuego had erupted five times earlier this year, one scientist in Guatemala said today's eruption was the biggest since 1999.

Seventeen towns with 33,000 people are in the precautionary evacuation zone, the country's emergency response director said. By midday, more than 10,000 had fled, officials said.

The volcano sits just 6 miles southwest of Antigua, a colonial city popular with tourists. Antigua was not in the evacuation zone.

Cinders spewing from the volcano were settling a half-inch thick in many places, government volcanologist Gustavo Chicna said.

Extremely hot gases were rolling down the sides of the volcano, which was entirely wreathed in ash and smoke.

The emergency agency warned that flights through the area could be affected.

There was a general orange alert, the second-highest level, but a red alert south and southeast of the mountain, where, Chicna said, "it's almost in total darkness" due to the ash and smoke.

Teresa Marroquin, a Guatemalan Red Cross coordinator, said the organization had set up 10 emergency shelters and was sending hygiene kits and water.

"There are lots of respiratory problems and eye problems," she said.

[Howard]

Thousands Evacuated as San Cristobal Volcano Eruption in Nicaragua Intensifies (Sept 9) -

Nicaragua’s largest volcano erupted three times this morning, belching gas and ash 1,500 meters into the sky and forcing the evacuation of thousands of families in the rural northwestern department of Chinandega, according to government media sources. No damages or injuries have been reported.

San Cristobal’s eruption is being monitored by the government officials and could result in the evacuation of 20,000 people, according to first lady and government spokeswoman Rosario Murillo.

Guillermo González, director of the National System for Prevention, Mitigation and Response to Disasters (SINAPRED) reported that 3,000 people in five communities are being affected by gases and ash from the volcano.

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[lonne rey]

4 Costa Rico Volcano's being closely watched after earthquake

Costa Rica News – When seeing the after effects of the earthquake in Costa Rica this past week, one thing that needs to be watched closely is the active volcanoes within the country. Even a small shift under one of these giants could cause an eruption. At least four of the seven active volcanoes in the country are in the crosshairs of scientists after the earthquake of 7.6 magnitude occurred on Wednesday in Costa Rica.

These are Arenal (Alajuela), Rincon de la Vieja (Guanacaste), Turrialba (Cartago) and Poás (Alajuela).

According to specialists agree Volcanological and Seismological Observatory of Costa Rica (OVSICORI-A) and the National Seismological Network (RSN: ICE-UCR), due to the size of the earthquake, it is normal volcanic structures, especially those already vulnerable are affected.There is a rearrangement of material and even chemical changes.

The clearest example is the Arenal, where locals reported a noise characteristic of rolling boulders. ”We know there is a cave in the north, in the direction of the community of La Palma,” said Maria Martinez geochemistry, OVSICORI.

So with the Telica, Apoyeque and San Cristobal the total is 7 at this moment

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[Derrick Johnson]

Ecuador's Tungurahua volcano erupts

 

 

 Ecuador's Tungurahua volcano spews large clouds of gas and ash near Banos, about 178 km (110 miles) south of Quito August 19, 2012. The authorities are encouraging residents living near the volcano to evacuate due to increased activity of the volcano, according to local media. The Tungurahua volcano has been in an active state since October 1999. REUTERS/Carlos Campana

http://news.yahoo.com/photos/ecuador-s-tungurahua-volcano-erupts-sl...  

[Kojima]

Submarine Eruption Makes it Three for New Zealand

By Erik Klemetti August 10, 2012

Just think, one week ago I was saying that 2012 was a relatively quiet year for volcanic eruptions. We haven’t made up all the ground of the more active years like 2010-11, however New Zealand had one of its more exciting volcanic weeks in a century — White Island and Tongariro both had eruptions and yesterday a large pumice raft was spotted north of the island nation.

* Aerial view by the New Zealand Navy of a pumice raft spotted near Raoul Island in the Kermadec Islands on August 10, 2012. Image from the New Zealand Herald.

This pumice raft (see right) is the product of a submarine volcanic eruption from one of the multiple of seamounts that are part of Kermadec arc north of New Zealand. Exactly which volcano is the source of the pumice is unclear — early on, it was suggested that Monowai was the source, but that seems to be in some question based on the location of the 26,000 square kilometer pumice raft (see below).

The raft is located to the northeast of Raoul Island, one of the active volcanoes of the Kermadec Islands that is above the sea surface. The next known active volcano to the northeast of Raoul is Monowai, thus the suspicion that it may be the source. Likely the only way this actual source will be identified is through matching the composition of this pumice with that of known material from Monowai (or another Kermadec volcano).

Rafts like this can travel great distances – some of the pumice rafts from the Krakatau eruption in 1886 washed up on African beaches months later — so trying to determine the exact source of the pumice when it is so widespread is challenging. However, this is likely a significant eruption based on the size of the pumice raft across the ocean surface. Monowai does seem reasonable, though, as it has produced significant eruptions in the last few years.

* A raw Aqua/MODIS image of the pumice raft off Raoul Island in the Kermadecs, seen on August 10, 2012. Image courtesy of NASA.

Much like I said yesterday, none of these eruptions are directly connected – Tongariro, White Island and this submarine eruption in the Kermadecs are too far apart to be sharing any magmatism. However, the tectonics that control the formation of volcanoes are all the same – the subduction of the Pacific Plate under the Australian Plate.

[Sevan Makaracı]

White Island volcano update (New Zealand, 8 Aug)

A new eruption has started from White Island volcano early today. An ash plume is rising to 4-6000 ft (1.3-1.8 km) altitude. The eruption consists of ash venting from a new cone that is beeing built in the Crater Lake, and followed a sharp DECREASE in tremor...

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[Sevan Makaracı]

White Island volcano eruption Time-Lapse video (New Zealand)

[Howard]

New Zealand Volcano Erupts for First Time Since 1897 ( Aug 6) -

http://www.dailymail.co.uk/news/article-2179847/New-Zealand-volcano...

• Mount Tongariro takes scientists by surprise by suddenly erupting for the first time since 1897
• People evacuated, roads closed and flights cancelled as thick ash spreads over several miles
• Witnesses describe flashes and explosions followed by ash cloud reaching more than four miles high

The 1,968-metre Mount Tongariro erupted late Monday shortly before midnight, throwing rocks into the air that landed up to a half-mile away, but there were no reports of casualties or damage.

Winds carried a cloud of volcanic ash across the centre of the North Island to the east coast city of Napier, more than 201 kilometres away.

Police lifted a warning for people to stay indoors, saying there was no health risk except to people with respiratory illnesses. Civil defence officials cancelled a potential threat advisory.

But the New Zealand Post cancelled deliveries in Napier and nearby Hastings for their carriers’ safety.

The state Institute of Geological and Nuclear Sciences said the eruption, accompanied by a series of small earthquakes, comprised steam from the mountain’s hydrothermal system rather than molten lava ejected from the core.

It said a helicopter flight over the mountain, which last blew in 1897, confirmed that activity had subsided, but it posted a volcanic alert of two on a scale of five and said it could not predict what would happen next.

“As with any volcano, an eruption could occur at Tongariro at any time with little or no warning, and there is an elevated level of risk,” it said.

Scientists admitted they were surprised by the eruption and said heightened seismic activity could continue for several weeks.

Some people left their homes, but there was no official evacuation. Police closed the island’s main highway, linking the capital, Wellington, with the biggest city, Auckland, because of poor visibility during the night, but it was reopened after daylight.

Tongariro is the smallest of three volcanoes in a national park on the central North Island’s plateau. Ski fields on 2,797-metre Mount Ruapehu, an active volcano that last erupted in 2007, continued to operate. Authorities closed Tongariro Alpine Crossing, a popular hiking track, until further notice.

Air New Zealand cancelled flights to and from North Island cities, and off-duty air traffic controllers were called in to help pilots fly clear of the ash cloud.

http://www.thestar.com/news/world/article/1238231--new-zealand-volc...

[jorge namour]

http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias...
http://www.cenapred.unam.mx/popo/UltimaImagenVolcanI.html

Imagen del Volcán Popocatépetl - Altzomoni Tlamacas - MEXICO

This image is updated every minute, shows the northern flank of the volcano including the glacier. Intense cloudy or transmission problems, can sometimes prevent the visibility of the volcano

[Sevan Makaracı]

Aug 6, White Island volcano, New Zealand

WHITE ISLAND VOLCANO STATUS CHANGED TO 'ERUPTION', VISITORS WARNED TO STAY CLEAR OF ISLAND

White Island volcano has erupted, prompting GNS Science to advise visitors to take extra care.

The island, located about 50 kilometres off the coast of Whakatane, is an active volcano and a popular tourist spot.

Its web camera captured the small eruption from Crater Lake, GNS Science volcanologist Michael Ronsenberg said.

"These phenomena are not unknown for While Island, but this is the first substantial confirmation that small scale eruptions are now occurring on the island and confirms the risk to visitors has increased," he said.

"Eruptions can occur at any time with little or no warning. We advise extra caution should be taken, if visiting the island."

GNS has changed the volcano's code from "experiencing signs of elevated unrest above known background levels" to "volcanic eruption is underway with no or minor ash emissions".

The alert level has also changed from one to two due to "minor eruptive activity".

It follows a code change last week when scientists discovered water levels in Crater Lake rose by about 3m to 5m overnight and the number of tremors had increased.

There was a particularly stronger seismic episode recorded Sunday morning, ending in a volcanic earthquake at 4.54am that day.

Rosenberg said: "[The earthquake] had a sound signal, which meant something happened on the surface. So we went back and looked at the camera images." ...

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