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Mon, 19 Nov 2018
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Bizarro Earth

Africa: First Footage Emerges Of Eritrean Volcanic Eruption

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Nabro continued to erupt Wednesday as this MODIS image shows
The first video footage emerged Wednesday of the eruption of the Nabro Volcano, located close to Eritrea's border with Ethiopia in northeast Africa.

Eritrean TV (Eri.TV) today broadcast images of the volcano which erupted for the first time in its history on Sunday 12 June last. The volcano continued to erupt Wednesday sending ash northwestards toward Sudan.

Meanwhile, the eruption of the stratovolcano has created a new landmass, according to the director general of Mines at the Ministry of Energy and Mines, Mr. Alem Kibreab.

Mr. Alem said that the ash and lava emitted from the Southern Red Sea region volcano has created a new land mass measuring hundreds of square metres. The director general also disclosed that a team composed of geological and volcanic experts is conducting studies in the area.

Meanwhile, according to reports, 7 people have died while 3 people have sustained injuries due to the eruption. The Ministry confirmed that inhabitants of the area have been moved to safer locations while at the same time they are being given basic provisions.

Bizarro Earth

Chilean Volcano Colors Southern Hemisphere Skies

Red Skies_1
© Kevin Thomson / Flickr
New Zealand sunset colored by the ash and other particles drifting around the Southern Hemisphere skies from the eruption of Chile's Puyehue-Cordon Caulle volcano.
After lying dormant for decades, Chile's Puyehue-Cordon Caulle volcano suddenly erupted on June 4 and has since hurled a tremendous cloud of ash, as well as plumes of sulfur dioxide into the air. This material has been circling the Southern Hemisphere and has been seriously disrupting air traffic for most of South America, and as far away as Australia and New Zealand.

But along with these negative aspects, the volcano has also been responsible for producing very colorful displays of deep reds and purplish hues as well as ripples of white both at dawn and dusk for many localities south of the equator.

This phenomenon of volcanic material coloring the twilight sky is well known and has been observed many times before in the aftermath of major eruptions. But just why does this occur? Before getting into an explanation, we should first explain how light is scattered to produce the various colors we see in our daytime sky.

Phoenix

Chile's Puyehue Volcano Spews Lava

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© The Associated Press
Ashes and smoke billow through the clouds after the eruption of the Puyehue-Cordon Caulle volcano in Chile
Lava has begun spilling from Chile's Puyehue volcano, 18 days after it first erupted, but there's no danger to nearby residents, according to the National Service of Geology and Mining.

But the ash cloud created by the eruption continues to wreak havoc on airlines around the world.

The Chilean airline LAN cancelled flights to Temuco and Valdivia in the south of the country, and a number of flights were suspended in Australia and New Zealand.

"Viscous lava has flowed slowly westward in a channel roughly 50 metres wide and 100 metres long," the national geology service known as SERNAGEOMIN said in its latest report.

Last week, SERNAGEOMIN chief Enrique Valdivieso said the appearance of lava would signal "the end of the eruptive process" and would not put any of the local population in danger.

Bizarro Earth

Chile volcano ash circles globe, returns home

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© Federico Grosso/AP
A boat covered by volcanic ash sits docked on the bank of Nahuel Lake on Thursday in southern Argentina.
Santiago, Chile - The ash cloud from a Chilean volcano that has been erupting for nearly two weeks has circled the globe and come home again.

The cloud - which has disrupted flights in Argentina, Brazil, Uruguay, Australia and New Zealand on its around-the-world trip - on Friday forced Chilean officials to cancel domestic flights for the first time since the Cordon Caulle volcano began erupting June 4.

LAN airlines suspended flights to the cities of Puerto Montt, Coyhaique and Punta Arenas in the far south of the South American country. While ash from Cordon Caulle has wreaked havoc with air travel abroad, it had left Chile's internal flights largely untouched until Friday.

"The tip of the cloud that has traveled around the world is more or less in front of Coyhaique," said Civil Aviation Office chief Pablo Ortega. Coyhaique is 800 kilometers (500 miles) south of the volcano.

Binoculars

Passengers Stranded as Chilean Volcano Continues to Cause Flight Disruptions

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© Reuters
A view is seen of a cloud of ash from Chile's Puyehue-Cordon Caulle volcano chain near sunset at the mountain resort San Martin de Los Andes in Argentina's Patagonia June 12, 2011.
A cloud of ash from an erupting volcano in southern Chile has - for a third day, Tuesday - disrupted air travel in South America, Australia and New Zealand, causing widespread delays. More than 60,000 passengers have been stranded.

While flights in some areas have resumed, including Melbourne, planes to and from New Zealand and Adelaide, Australia remain grounded Tuesday.

The volcano in the Puyehue-Cordon Caulle chain in Chile has been erupting for several days, putting South American air travel into chaos as it spews ash high into the atmosphere, spreading eastward around the globe until reaching Australia, New Zealand and beyond in the Pacific.

In addition to Argentina and Chile, flights have been disrupted in the South American countries of Brazil and Uruguay.

Binoculars

Eritrea Volcano Disrupts East Africa Air Travel

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© Agence France-Presse
A natural-color image released by NASA shows plumes billowing from Nabro volcano in Eritrea on June 13, 2011
A volcanic eruption in Eritrea has sent a plume of ash across the Horn of Africa, disrupting airline schedules and sparking health concerns.

Satellite photos show a column of ash rising from the long-dormant Nabro volcano in far southeastern Eritrea, near its border with Ethiopia and the city-state of Djibouti. The eruption is also about 100 kilometers from the coast of Yemen, just across the mouth of the Red Sea.

A photo posted on the website earthobservatory.nasa.gov shows the ash plume spreading westward toward Sudan.

The ash cloud prompted U.S. Secretary of State Hillary Clinton to cut short a visit to Ethiopia, where she addressed the African Union Monday. It has also disrupted commercial aviation. Several major airlines cancelled flights to destinations in the region.

Play

Kamchatka Shiveluch Volcano erupts in Russia

Volcano activity overview : Shiveluch volcano is a 3283m (10770 feet for our US viewers) high andesitic volcano which is the largest within the Kliuchevskaya volcano group in Kamchatka. It is the most active in the group (at least 60 eruptions in the last 12000 years have occurred) and has been erupting often within 2011 sending ash between 3 and 8 km into the air. The latest set of activity started on June 10, 2011

UPDATE: 17:22 UTC : A Russian TV station has reported yesterday from this Eruption with some video footage from the eruption. Russian volcanoes are not often videotaped.

Sun

Volcano Supercharges Sunsets Far and Wide

Volcanic Sunset
© Patricio Rodriguez, Reuters
Volcanic Sunset
A cloud of ash from Chile's Puyehue volcano (map), which began erupting on June 4, creates a golden-hued sunset near the mountain resort of San Martín de Los Andes in Argentina on June 12. (Pictures: Chile Volcano Plume Explodes With Lightning.)

The corrosive and obscuring volcanic ash has grounded airplanes all across South America and even in Australia, but the tiny dust and glass particles are also responsible for an optical effect that has lead to spectacular sunsets and sunrises filled with bright gold, fiery orange, and blood red hues around the globe.

"The wavelength of light coming from the sun is being diffracted differently, and that's what causes the visual effect that we see," explained Jay Miller, a volcanologist at Texas A&M University.

Bizarro Earth

NASA/NOAA GOES Project Releases 2 Week Movie of Chilean Volcanic Eruption

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© NASA GOES Project, Dennis Chesters
This visible image from GOES-13 on June 6, 2011 at 10:45 a.m. EDT and shows the ash plume from the Puyehue-Cordón Caulle volcano in Chile (lower left).

This super-fast animation includes 445 visible and infrared images from the GOES-13 satellite that runs from June 4 at 1:45 p.m. EDT to June 16 at 13:05 (9:05 a.m. EDT) and shows the ash plume from the Puyehue-Cordón Caulle volcano in Chile (lower left). TRT: 1:14 minutes. (Credit: NASA GOES Project, Dennis Chesters)

The NASA/NOAA GOES satellite Project released a satellite animation of two-weeks of eruptions from the Puyehue-Cordón Caulle volcano in Chile.

The Geostationary Operational Environmental Satellite called GOES-13 has been taking continual images of the volcano from its vantage point in space since the eruption began on June 4. The GOES series of satellites are managed by NOAA, and the animation was created by the NASA/NOAA GOES Project, located at NASA's Goddard Space Flight Center in Greenbelt, Md. The animation includes visible and infrared imagery and has a total running time of 1:14 minutes. This movie contains all 445 images taken by GOES-13 since the eruption began.

Cloud Lightning

Prehistoric East African Volcano Roars to Life

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© NASA
NASA's Aqua satellite captured Nabro's ash plume blowing westward into Ethiopia on Wednesday.
Eritrea's long-dormant Nabro volcano burst to life for the first time in recorded history, belching plumes of ash near the border with Ethiopia.

Air transport was disrupted in the immediate region, and briefly threatened to stream into airways of the Middle East.