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 Post subject: Epidemic of volcano awakenings across planet continues‏
PostPosted: Fri Mar 09, 2012 10:37 am 
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Cleveland volcano explodes


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March 8, 2012 – ALASKA - A restless Aleutian volcano exploded Wednesday night and may have blown off a slow-growing lava dome that was building for months in its summit crater, volcanologists say. Cleveland Volcano, 940 miles southwest of Anchorage, probably burped up a small amount of ash -- a potential hazard to trans-oceanic air travel -- but the ash did not appear to reach above 20,000 feet, said Steve McNutt, a researcher with the Alaska Volcano Observatory. Because of its remoteness, harsh weather in the area and budget constraints, Cleveland Volcano does not have instruments on its flanks. As a result, scientists cannot listen to its inner rumblings. But distant seismometers and specialized microphones detected the explosion about 7 p.m. Wednesday, according to the observatory. The explosion caused a displacement of air and an airwave traveled out from the volcano at the speed of sound, McNutt said. Instruments at volcanoes 60 and 90 miles away detected the explosion several minutes after it occurred, he said. Clouds on Wednesday and today prevented clear satellite views, so scientists are not sure exactly how much ash may have shot out of the 5,676-foot volcano, which makes up the western half of Chuginadak Island. “It is the Aleutians in winter, after all,’ McNutt said. Either way, the researchers do not think the volcano poses an immediate threat to planes. McNutt thinks the explosion blasted away a lava dome building inside the volcano's summit crater. As the thick, pasty molten rock flows slowly into the crater, it piles up and plugs gas vents, he explained. An explosion can occur when the gas builds up enough pressure, McNutt said

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Alaska Aleutian Island Cleveland volcano explodes for third time in a week


March 15, 2012 – ALASKA (Aleutian Islands) - Cleveland Volcano has exploded for the third time in just over a week. The latest eruption of the Aleutian volcano Tuesday afternoon was relatively small, according to a release from the Alaska Volcano Observatory. Scientists at the Observatory weren’t able detect an ash cloud associated with this event or either of the other two. There’s no real-time monitoring equipment on Cleveland. None of the recent eruptions have interrupted air travel in the region. Cleveland’s last major eruption in 2001 sent ash clouds as high as 39,000 feet. The volcano is on uninhabited Island, about 160 miles west of Unalaska.



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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Fri Mar 09, 2012 10:51 am 
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Volcanic activity increases at Japan’s Sakurajima volcano


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March 8, 2012 – JAPAN - Sakurajima volcano appears to be at higher levels of activity, as the last week has seen an increased average number and size of eruptions. According to the latest USGS / Smithsonian report "explosions during the past week “often” produced plumes that rose to altitudes of 1.2-3 km (4,000-10,000 ft) and drifted NW, E, and SE.” Many observations of ash plumes originate of analysis of satellite data and dedicated Volcanic Ash Advisory Centers (VAAC) around the world monitor them and transmit real-time information about hazardous ash plumes to aircraft and air traffic control centers. Such reports are often complemented by direct observations from pilots passing nearby. Ash plumes from Sakurajima were observed by pilots on 5 and 6 March, the latter drifting SE at an altitude of 2.4 km (8,000 ft). Sakurajima volcano in southern Kyushu, Japan, is one of the few volcanoes in the world with near persistent activity and typically produces 1-2 strombolian to vulcanian-style explosions per day.


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Fri Mar 09, 2012 10:54 am 
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Kamchatka’s Bezymianny volcano put on highest alert- eruption can happen anytime


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March 8, 2012 – KAMCHATKA - Bezymianny, one of the most active volcanoes in the world has been put on aviation color code red, the highest alert given by the Kamchatka Volcanic Eruption Response Team. KVERT assigned the code on Tuesday and warns of an imminent eruption. "Activity of the volcano continuously increases," says the alert. "Strong ash explosions up to 42,640 ft (13 km) a.s.l. possible at any time. Ongoing activity could affect international and low-flying aircraft.

Friday saw a new eruption of the Bezymianny volcano on the Kamchatka Peninsula in the Russian Far East. Earlier in the day, the volcano spewed ash up to 8 kilometers high, seismologists said, adding that the eruption does not pose a threat to population centers in the area. One of the most active volcanoes in the world, Bezymianny is located 350 kilometers northeast of the city of Petropavlovsk-Kamchatsky. During its most powerful eruption in 1956, the 2,800-meter volcano ejected about three cubic kilometers of volcanic debris in a very short

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Earthquakes and Volcanoes along with Earth changes will take place here in the last days! Wake up folks!


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Sat Mar 10, 2012 3:51 am 
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COLOMBIA - The Nevado del Ruiz volcano, whose eruption 26 years ago killed around 25,000 people, is showing signs of activity after nearly 20 years laying dormant, said Colombian geological group Ingeominas Thursday. Early Friday morning, geologists completed an observational fly-over with the assistance of the Colombian Air Force, during which they photographed the Nevado del Ruiz volcano and noted "ash on the glacier, near the crater rim and on the eastern flank," as well as a 4,500 foot gas column at the mouth of the volcano. During the same day a seismic tremor was reported along with an increase in sulfur dioxide emissions. All of these factors signal that the volcano is heating up. Located about 80 miles west of Bogota, Nevado del Ruiz is an active volcano that produces pyroclastic flows, or swift currents of hot gas and rock that lead to destructive mudslides. There have been numerous eruptions over the centuries, with the most recent was on November 13, 1985.


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Tue Mar 13, 2012 4:41 am 
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Indonesia’s Ijen volcano placed on high alert after rise in activity


March 13, 2012 – INDONESIA - The official alert level for Ijen volcano in East Java, Indonesia, has been raised again to 3 (“alert”) due to an increase in activity, our Indonesian correspondent Andi reports. A new 10 m wide gas vent, which erupted burning gasses, was observed on 10 March at 17 m distance from the shore. Thick steaming, larger than usual, forming a thick white column of sulfur steam 200 m high was already noted since 3 March. Measurements of the lake water temperature at 5 m depth had also shown increased values of 42.70 deg C. On 10 March, the lake surface was 2 meters higher than normal, although this could be attributed to heavy recent rain fall. Another sign of increased activity is that many leaves of trees and other plants around the crater have died recently, suggesting higher than normal SO2 levels. Seismic activity has been rising as well. Since 22 Feb, a near continuous tremor signal has been being recorded. In the interval 22-31 Feb, there were 52 harmonic tremor periods lasting up to 20 minutes, as well as 17 2 low-frequency earthquakes, 38 mostly shallow volcanic quakes. This number increased to 306 tremor episodes lasting up to 25 minutes, 27 low frequency, and 125 mostly shallow volcanic earthquakes during the latest observation period between 1-10 March. Ijen volcano in East Java, famous for its turquoise acid lake Kawah Ijen and the sulfur mine inside its crater, had been on higher alert starting 18 December 2011, but was lowered to alert 2 on 4 Feb this year, but is now again at the second highest level of 3, meaning that volcanologist think an eruption could be imminent. Access to the crater is currently closed. Ijen last erupted in 1999.


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Earthquakes and Volcanoes along with Earth changes will take place here in the last days! Wake up folks!


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Thu Mar 15, 2012 10:44 am 
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Montserrat’s Soufrière Hills volcano comes alive


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March 14, 2012 – MONTSERRAT - A small pyroclastic flow occurred from Montserrat's Soufrière Hills volcano on 9 March, MVO reports. The flow was small, but happened with no warning at around 5:20 pm (local time) from the western flanks of Soufriere Hills Volcano down into Spring Ghaut. The pyroclastic flow traveled about 1 km to the west towards Plymouth before its ash dissipated to form a small ash cloud rising 1.3 km and drifting towards St. Georges Hill and out to sea. MVO has published further details and photographs of this event which is significant as it occurred during a quiet phase of the volcano with no current active lava dome growth and illustrates the hazard of sudden pyroclastic flows. “There were no precursors to this event. Although activity has generally been low, this event clearly illustrates that Soufrière Hills Volcano is still an active volcano and that pyroclastic flows can occur at any time with little to no warning.”


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Thu Mar 15, 2012 10:49 am 
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Santorini: history’s most dreaded volcano awakes and is rapidly inflating warns geologist


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March 14, 2012 – GREECE - The British Broadcasting Company named it the world's best island in 2011. Santorini is a tourist magnet, famous for its breathtaking, cliff side views and sunsets. It's also a volcanic island that has been relatively calm since its last eruption in 1950. Until now. The Santorini caldera is awake again and rapidly deforming at levels never seen before. Georgia Tech Associate Professor Andrew Newman has studied Santorini since setting up more than 20 GPS stations on the island in 2006. “After decades of little activity, a series of earthquakes and deformation began within the Santorini caldera in January of 2011," said Newman, whose research is published by Geophysical Research Letters. "Since then, our instruments on the northern part of the island have moved laterally between five and nine centimeters. The volcano's magma chamber is filling, and we are keeping a close eye on its activity.” Newman, a geophysicist in the School of Earth and Atmospheric Sciences, cannot be certain whether an eruption is imminent since observations of such activity on these types of volcanoes are limited. In fact, similar calderas around the globe have shown comparable activity without erupting. However, Newman says the chamber has expanded by 14 million cubic meters since last January. That means enough magma has been pumped into the chamber to fill a sphere three football fields across. Should Santorini erupt, Newman says it will likely be comparable to what the island has seen in the last 450 years. “That could be dangerous,” notes Newman. “If the caldera erupts underwater, it could cause local tsunamis and affect boat traffic, including cruise ships, in the caldera. Earthquakes could damage homes and produce landslides along the cliffs.”

[youtube]http://www.youtube.com/watch?v=z0bdsAuTWB4[/youtube]




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Earthquakes and Volcanoes along with Earth changes will take place here in the last days! Wake up folks!


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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Thu Mar 22, 2012 5:00 am 
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Mt. Etna soon to blow!

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ITALY - New earth tremor last night on the southern slope of Etna, in the same area where tremors had already been felt yesterday afternoon. This second seismic event was 2.5 on a Richter scale, like the one felt yesterday and was registered at 4:46 by the National institute of geophysics and volcanology, that pinpointed the epicenter 9.8 kilometres deep between the towns of Belpasso, Biancavilla, Caporotondo Etneo, Nicolosi Paterno', Santa Maria di Licodia and Ragalna. The volcano has originated small flows of lava and high smoke columns since the beginning of the year



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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Sat Mar 24, 2012 4:54 pm 
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MONTSERRAT - A “noticeable” increase in seismic activity at the Soufirere Hills Volcano has resulted in the closure of the Zone C area near the volcano, which had been reopened for daytime entry in December. Dr Paul Cole, director of the Montserrat Volcano Observatory, told a radio station Friday that it was a precautionary measure as authorities continue to monitor the volcano. “Following two volcano-tectonic swarms on the March 22 and 23, 2012 involving 49 and 54 events respectively, mild ash venting began at Soufriere Hills Volcano at around 8:00am local time on March 23,” the MVO said in a statement. “The venting was sourced from the floor of the Feb. 11, 2010 collapse scar, immediately south of the old English’s crater wall and to the west of the long-lived hottest fumarole previously identified.” The Zone C area, which is comprised of Cork Hill, Weekes, Foxes Bay, Richmond Hill, Delvins and extends 500 meters out to sea is part of the island’s exclusion zone. It reopened in December 2011, after the hazard level in the area was lowered. The level will likely not be lowered, however, despite the area’s closure. According to the statement, the ash venting was “clearly pulsatory,” and sent ash 6,000 feet above sea level. It sent black jets of ash rising a few hundred meters above the floor of the collapse scar. The activity was described as “phreatic,” meaning activity formed when superheated rock meets groundwater, causing the rocks to fragment and generate ash. “[Volcano-tectonic] earthquakes are related to fracturing rocks probably as a result of increases in pressure,” the statement said. “It is likely that these increases and the resulting earthquakes are related to uprising magma below the volcano.”Similar types of activity have apparently occurred at the volcano up to several months prior to magma extrusion, both in 2005 and 2008.




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 Post subject: Re: Epidemic of volcano awakenings across planet continues‏
PostPosted: Mon Mar 26, 2012 11:58 am 
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Batu Tara volcano in Lesser Sunda Islands of Indonesia erupts


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INDONESIA – According to the regional VAAC, the Batu Tara volcano has erupted and is emitting a dense ash cloud. The aviation alert-status for the region has been raised to orange. Batu Tara volcano is located 50 km north of Pulau Lembata in the Flores Sea. The crater is in the middle of the island with dimensions of 900 m x 700 m. The uninhabited island of Batu Tara is the steep-sided summit of an active stratovolcano and has a small summit crater which is open to the east. The base of the island lies about 3,000 meters below sea level. Batu Tara is the northern-most active volcano in the Adonara Pantar sector of the Sunda arc. This is at the boundary of the collision of the north moving Australia tectonic plate, and the Sunda-Banda arc. Batu Tara volcano is located 230 km above the Benioff zone in a region where the arc crust is relatively young and thin. Rocks from Batu Tara contain crystals that formed in different magmas. Batu Tara last eruption was in 2010.




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