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Archive for the ‘volcanism report’ Category

Cotopaxi Volcano Stirs, Ash Eruptions Reported

Posted by feww on August 15, 2015

Ash from Ecuadorian volcano covers parts of Quito

Two small explosions at the giant Cotopaxi volcano ejected plumes of ash to a height of about 5km above the crater on Friday, reported Ecuador’s Geophysical Institute.

Volcanic ash from the eruptions covered southern parts of Quito, Ecuador’s capital and its second most populous city [metro pop: ~ 3.2 million, FIRE-EARTH Population Model.]

The events have been described as “very small explosions” that were “almost imperceptible,” by the officials, who insist the volcano, which has been showing signs of unrest since April, with a large increase in seismicity (including harmonic tremors) and SO2 emissions, is not necessarily about to erupt.

One of the world’s highest volcanoes, Cotopaxi is located about 50 km south of Quito, Ecuador. It is the second highest summit in the Andean country, reaching a height of about 5,900m. Some 90 or so eruption have been recorded since 1534.

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Mass Evacuations as Sinabung Erupts Again

Posted by feww on January 8, 2014

Mount Sinabung Continues to Eject Volcanic Materials into the Air

Some 22,000 people living near Sinabung volcano have been evacuated Since Monday after the volcano erupted in North Sumatra, Indonesia.

The volcano is spewing columns of ash and smoke up to 4.5km above the summit crater, authorities said.

sinabung 7jan14
About 22,000 people have been evacuated near Mt Sinabung as the volcano continues to erupt. Mount Sinabung has been ejecting columns of ash and smoke up to 4.5km above the summit crater since Saturday. More than 60 pyroclastic flows extending up to 5 km from the crater have also been recorded. Photo credit: Agung Kuncahya B./Xinhua.  More images…

“The National Disaster Mitigation Agency (BNPB) has instructed all relevant ministries, government institutions, local disaster mitigation agencies and the Karo regency administration in North Sumatra to prepare for a worst-case scenario following an increase in Mount Sinabung’s volcanic activity during the past week,” said a report.

The “worst-case scenario” comes into if the exclusion zone is extended from its latest 7km radius, southeast slope of the volcano, to between 7.5 and 10 km from the crater.

More than 60 pyroclastic flows extending up to 5 km from the crater have been recorded with the flow volume increasing every day, said The National Disaster Mitigation Agency (BNPB).

The volume of volcanic material ejected so far is about a quarter of the total 2,540,000 cubic meters formed in Mt. Sinabung’s crater. “This means that the pyroclastic potential stored in the volcano’s lava dome is still substantial; so if it should all come out, the threat would be devastating,” Jakarta post quoted an official as saying.


Approximate location of Sinabung is marked  on the map by FEWW.
Mount Sinabung is one of Indonesia’s 130  active volcanoes

Sinabung Volcano: Summary of Details

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460
m
Latitude: 3.17°N
Longitude: 98.392°E
Source: GVP

Sinabung is located in Group K Volcanoes


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

The PVMBG categorizes Sinabung as a type A volcano, or those that have erupted since 1600. Type B volcanoes have not erupted since 1600 but show signs of activity, and type C are those that have not erupted in recorded history.

Indonesian Volcanoes

Indonesian Volcanoes have been responsible for a number of cataclysmic explosions in modern history.

Karakatoa
An 1888 lithograph of the 1883 violent explosion of Krakatau.

Based on their models, our colleagues at EDRO forecast that volcanic activity on the island of Sumatra could cause the collapse of Singapore. However, they have not disclosed any further detail.

Chronology of Recent Eruptions

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Volcano Erupts in Ogasawara Islands

Posted by feww on November 21, 2013

Warning issued to Pacific shipping after volcano erupts, forming a new Island

Authorities have warned shipping in the Pacific Ocean to maintain vigilance for airborne volcanic material after a volcano erupted near one of the Ogasawara Islands, some 1,000 kilometers south of Tokyo, NHK reported Japan’s Meteorological Agency (JMA) as saying.

Japan Coast Guard has confirmed black smoke spewing out of a new land mass about 500 meters southeast of Nishinoshima island, JMA said

Video footage shows a plume of black and white smoke and steam  rising to a height of more than 600 meters above a new landmass measuring about 200 meters across.

Ogasawara - new island formed from volcanic eruption
Black and white smoke and steam rising to a height of more than 600 meters above a new 200-m long landmass created by volcanic eruption near Nishino shima, Bonin Islands, south of Japan. Screenshot from NHK news video clip.

new volcanic island
Screenshot  from NHK news video clip.

“The agency says multiple clusters of white smoke overhead suggest intermittent explosions,” said the report.

Volcanic activity created a new island which was fused to the uninhabited Nishinoshima between 1973 and 1974, the last time when eruptions occurred near the island.


Location Map of Volcano Islands, Ogasawara Islands, Japan region. Image credit: Lim Tor


Bonin Islands (aka, Ogasawara Group, in Japan).  Click Image to Enlarge.

In 2010, one of the volcanoes in the region erupted, spewing smoke and ash to a height of about about 100 meters above the sea level. The surrounding sea area changed to a greenish-yellow color with nearby areas turning cloudy.

JMA said the volcano, called Fukutokuokanoba, had erupted seven times since 1904, forming ephemeral islands (temporary land masses) on three occasions, all of which later sank below the ocean surface.

The first known ephemeral island called Shin-Iwo-jima (New Sulfur Island) was formed in 1904, and the most recent in 1986.

What the Volcano Islands Look Like


North Iwo Jima Island (Official Japanese name Kita-iōtō, but commonly known as Kita-iōjima, meaning “north sulfur island”) is the northernmost island of the Volcano Islands cluster of the Ogasawara Islands, about 1175 km south of Tokyo. Image Credit: Chisatos

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A Second Indonesian Volcano Erupts

Posted by feww on November 19, 2013

Mt Merapi eruption follows multiple explosions at Mt Sinabung

“Mount Merapi experienced a phreatic eruption. Its status remains normal due to a lack of activity,” said Yogyakarta’s Geological Disaster Technology Development and Research Agency (BPPTKG).

On November 16, 2013 FIRE-EARTH warned: 22 Indonesian Volcanoes Remain on High Alerts

Mt Merapi was placed on “Yellow Alert,” or “Level II” of the country’s 4-level alert system, on August 3, 2013.

Mt merapi
Latest Image of Mt Merapi. Credit: Badan Geologi.

“On Monday at 4:52 a.m. before the eruption, BPPTKG detected an earthquake in Ciamis, West Java, at a magnitude of 4.7 on the Richter scale. The tectonic quake is believed to have shaken the magma chamber of Mount Merapi causing it to release gas from below,” said BPPTKG spokesperson.

Merapi ejected volcanic materials about 2 kilometers into the air showering a 60-km radius area east of the volcano with ash, said the report.

The authorities have since imposed 1-kilometer exclusion zone around the volcano base.

The phreatic eruption on Monday was similar to one on July 22, said National Disaster Mitigation Agency (BNPB) spokesman. “But today’s was more powerful than the July 22 eruption.”

More than 600 families living in Kalitengah Lor, Kalitengah Kidul and Srune hamlets, in Glagaharjo village, Sleman regency, Yogyakarta, have been evacuated.

Hundreds of other villagers living on the western flank of Mount Merapi also fled their homes.

“The volcanic ash also affected residents in nearby towns. In Surakarta, Central Java, residents were shocked by the sight of volcanic ash covering streets, gardens and roofs. The ash rain continued until around 10 a.m. on Monday.” said the report.

“Surowedanan village in Boyolali, located around 17 km from the peak of Mount Merapi, was also covered by volcanic ash. ‘This morning, when I went out of the house at around 5 a.m., I saw ash everywhere,’ said Veronica Maria Sayektiana, of Surowedanan. According to Veronica, residents were wearing masks when they ventured out of their homes as the ash was still falling along with the drizzle.”

Merapi eruptions have killed hundreds of people in the past couple of decades.

Mount Merapi is one of the most active volcanoes in Indonesia. The 2010 its eruptions killed more than 300 people dead and forced about 400,000 people to evacuate their towns, while a 1930 eruption left at least 1,300 dead.

Mt Sinabung Update

The Indonesian ministry of transportation has diverted all flights to avoid routes near Mt Sinabung, located in Karo District, North Sumatra, which has erupted multiple times since last week.

The authorities say Mt Sinabung eruption on November 12 ejected  volcanic material that covered five districts destroying some 1,893 hectares of citrus plantations in Tanah Karo, which has impacted fruit production, said a report.

The explosive activity follows a series of most recent eruptions exhibited by the 2,460-meter high volcano that began in September 2013, leading to a significant eruption on October 24, which saw the volcano spewing smoke and ash to a height of about 3km above the crater summit, followed by other eruptions, especially the explosive eruption that occurred on Sunday, November 3.

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Posted in Global Disaster watch, global disasters, global disasters 2013, Significant Event Imagery, significant events, volcanic activity, Volcanic Activity Report, volcanic ash, volcanic earthquake, volcanic eruption, volcanic eruptions, volcanic event, volcanic unrest, volcanism report | Tagged: , , , , , , , | Leave a Comment »

ETNA Erupts Again, Lighting Up the Sky Over Sicily

Posted by feww on November 18, 2013

Mt ETNA erupted, shooting up towering columns of ash into the air

The eruption from Europe’s most active volcano ejected towering columns of ash and fountains of molten lava over Sicily Saturday night.

Etna, one of the most active volcanoes in the world, is in an almost constant state of activity. The eruption was the 16th paroxysmal explosion at Etna so far this year, forcing officials at Cantania Airport to close airspace above much of Sicily as a precautionary measure.

Mt Etna is the largest of the three active volcanoes in Italy, covering an area of about 1,200km², with a basal circumference of 140km.  More than a quarter of Sicily’s live on the slopes of the 3,330-meter volcano.Volcanic activity first occurred at Etna about 500,000 years ago.

A massive lava flow from an eruption in November 1928 destroyed the village of Mascali. Other major 20th-century eruptions occurred in 1949, 1971, 1981, 1983 and 1991–1993.

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22 Indonesian Volcanoes Remain on High Alerts

Posted by feww on November 16, 2013

5 Indonesian volcanoes remain on the 2nd highest state of alert, “orange,” 17 others on “yellow”

The alerts follow the latest eruption at Mt Sinabung, which saw the volcano ejecting ash to a height of about 7 km above the summit, forcing the authorities to evacuate about  5,600 people in several villages, according to Indonesia’s Center for Volcanology and Geological Disaster Mitigation (PVMBG).

Indonesian authorities have established a 3-km exclusion zone near the volcano following the Tuesday eruption for the second time in 9 days.

PVMBG had issued a “level three,” or “orange alert,” recommending villagers to stay out of the 3-km danger zone on November 3, 2013, followed by a 7-day state of emergency declared by the local authorities.

The explosive activity follows a series of most recent eruptions exhibited by the 2,460-meter high volcano that began in September 2013, leading to a significant eruption on October 24, which saw the volcano spewing smoke and ash to a height of about 3km above the crater summit, followed by other eruptions, especially the explosive eruption that occurred on Sunday, November 3.

Mt Sinabung is one of 130 or so active volcanoes in the Indonesian archipelago, whose 18,307 islands (922 of the islands are permanently inhabited) straddle the Pacific Ring of Fire (PRF).

PRF, aka the circum-Pacific seismic belt, is home to 452 volcanoes, or more than 75% of the world’s active and dormant volcanoes.

About 90% of the global seismicity and 82% of the largest quakes occur along PRF  [FIRE-EARTH data.]

mt sinabung
Mt Sinabung erupted explosively again on November 12, 2013 for a second time in 9 days. Image credit: CRIonLine via Xinhua. More images…

Mount Sinabung -ANTARA
Mount Sinabung spewing volcanic ashes as seen from Simpang Empat Village in Karo, North Sumatera (September 15, 2013). Credit:  ANTARA/Septianda Perdana.

Mt Sinabung erupted in August 2010 after 410 years of dormancy. The eruption claimed a dozen lives and displaced thousands of others. The eruption which occurred on August 29, 2010 was followed by a more powerful explosion the next day, and much stronger blast on September 7, 2010.

Sinabung spewed ash to a height of about 2km in its second eruption in two days on August 30, 2010.


Mount Sinabung volcano spews smoke in Suka Nalu village in the district of Tanah Karo, in Indonesia’s North Sumatra province August 30, 2010. The Indonesian volcano that erupted for the first time in centuries on Sunday spewed fresh plumes of smoke early on Monday morning, causing panic in nearby villages and delaying local flights, officials said on Monday.  Credit: Reuters/Tarmizy Harva. Image may be subject to copyright.  More photos …


Approximate location of Sinabung is marked  on the map by FEWW.
Mount Sinabung is one of Indonesia’s 130  active volcanoes

Sinabung Volcano: Summary of Details

Country: Indonesia
Region: Sumatra
Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown [1600?]
Summit Elevation: 2,460
m
Latitude: 3.17°N
Longitude: 98.392°E
Source: GVP

Sinabung is located in Group K Volcanoes


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

The PVMBG categorizes Sinabung as a type A volcano, or those that have erupted since 1600. Type B volcanoes have not erupted since 1600 but show signs of activity, and type C are those that have not erupted in recorded history.


Mount Sinabung ejected tephra into the air as seen from Tanah Karo, North Sumatra, Indonesia, Friday, Sept. 3, 2010. (AP Photo/Dedy Zulkifli). Image may be subject to copyright.

Indonesian Volcanoes

Indonesian Volcanoes have been responsible for a number of cataclysmic explosions in modern history.

Krakatoa [Krakatau] Cataclysmic Eruption 1883

ashcroft -riv thames
William Ashcroft painting “On the Banks of the River Thames” in London, November 26, 1883 [Exactly three months after Krakatoa’s cataclysmic 1883 eruption.]

The Krakatoa eruption affected the climate driving the weather patterns wild for the next 5 years. Average global temperatures fell by about 1.2 °C in the following years, returning to normal only in 1888.

The eruption ejected about 21 cubic kilometers of volcanic matter and destroyed two-thirds of the Krakatoa island. The explosion also spawned giant tsunamis killing an estimated 40,000 people.

Karakatoa
An 1888 lithograph of the 1883 violent explosion of Krakatau.

Based on their models, our colleagues at EDRO forecast that the collapse of Singapore may occur as a result of volcanic activity on the island of Sumatra. However, they have not disclosed any further detail.

Indonesia Volcano Alerts

PVMBG has placed five volcanoes on the second highest level of activity “Level III, Orange Alert,” and 17 others on  third highest alert level “Level II, Yellow Alert.” Following table shows the alert level designations, as of November 16, 2013.

indonesia volcano alerts 3nov13 -fire-earth-blog
Indonesia Volcano Alerts as of November 16, 2013. Source: PVMBG. Image enhanced by FIRE-EARTH Blog.

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‘Red’ Alert at Copahue Volcano

Posted by feww on December 24, 2012

Copahue volcano activity could intensify

Authorities in Argentina and Chile have raised the alert at Copahue volcano  in Biobio region to the highest level after detecting continued seismic activity on Sunday.

Copahue volcano
A column of ash and smoke from Copahue volcano rises above the town of Caviahue, a popular ski resort in Neuquen province, Argentina, some 1500 km SW of the capital Buenos Aires. Photo: AFP. Image may be subject to copyright. 

  • Copahue first erupted on Saturday, showering ash on nearby villages and prompting many to evacuate.
  • “The intensity of seismic signals suggests the eruption in progress is on the smaller side [however] we cannot discount the possibility that the activity could turn into a larger eruption,” said a spokesman for the Chilean Geology and Mining Services.
  • The 2,970-meter volcano is in SW Argentina’s Neuquen province, near the Chilean border.
  • About 3,000 people live in the vicinity of the massive volcano, including  the residents of Copahue, the town of Caviahue and indigenous Mapuche communities.
  • The ash plume rose  to a height of about 1.5km (5,000ft) above the crater, said Chile’s emergency office (ONEMI).

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Global Disasters: Links, Forecasts and Background

GLOBAL WARNING

Posted in Global Disaster watch, global disasters, global disasters 2012, Volcanic Activity Report, volcanic earthquake, volcanic eruptions, volcanism report, volcano alert, volcano eruption, Volcano Hazard, volcano images, Volcano News | Tagged: , , , , , , , , , , , | Leave a Comment »

VolcanoWatch Weekly [21 January 2010]

Posted by feww on January 21, 2010

New activity/Unrest

13 January – 19 January 2010
SI /USGS Weekly Volcanic Activity Report

Volcano News (Source: GVP)

MVO reported that during 8-15 January activity from the Soufrière Hills lava dome increased significantly. One explosion on 8 January and two on 10 January generated ash plumes that rose to altitudes of 5.5-7.6 km a.s.l. Ash fell in occupied areas to the NW. On 18 January, a partial lava-dome collapse generated a pyroclastic flow. Smoke from burning houses in Kinsale was visible after the event.

The IG reported that during 13-14 January explosions from Tungurahua ejected incandescent material 1 km above and 1.5 km away from the crater, onto the flanks. (SOURCE: GVP)

Ongoing Activity

Arenal, Costa Rica;  Chaitén, Southern Chile; Gaua, Banks Islands (SW Pacific); Karymsky, Eastern Kamchatka; Kilauea, Hawaii (USA);  Kliuchevskoi, Central Kamchatka (Russia); Planchón-Peteroa, Central Chile-Argentina border; Rabaul, New Britain; Sakura-jima, Kyushu; Sangay, Ecuador; Shiveluch, Central Kamchatka (Russia);  Suwanose-jima, Ryukyu Islands (Japan)

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.

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FEWW Volcanic Activity Forecast

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