Εμφάνιση αναρτήσεων με ετικέτα eruption. Εμφάνιση όλων των αναρτήσεων
Εμφάνιση αναρτήσεων με ετικέτα eruption. Εμφάνιση όλων των αναρτήσεων

Παρασκευή, 28 Νοεμβρίου 2014

Japan Cancels Dozens of Flights Following Volcano Eruption: Reports

Dozens of flights have been cancelled across southern Japan following the first eruption in 22 years of the country's largest active volcano, the Japan News reported Friday.

The active volcano Mount Aso in the southwest of Tokyo has been shooting out chunks of magma since Friday morning. It ejected lava debris and plumes of ash a kilometer (3,280 feet) high into the air on Wednesday after tremors began the day before, the newspaper reported.

Flights have been cancelled from the nearest city, Kumamoto, following a warning from the country’s Meteorological Agency to stay away from the volcanic crater. However the country’s observatory does not foresee an escalation in the eruption. Most of the activity occurred one hour within the explosion.

According to the newspaper, some hikers near the summit may have been hit by the flying rocks within a one kilometer radius of the volcano.

Mount Aso is Japan’s largest active volcano. In September, more than 60 people died when another volcano in the country, Mount Ontake, erupted. Mount Ontake's eruption was the worst in Japan for 90 years.

Σάββατο, 27 Σεπτεμβρίου 2014

Volcano in central Japan erupts, injuring visitors (2 video)

A volcano straddling Nagano and Gifu prefectures in central Japan erupted on Saturday, with thick gray smoke spewed up into sky, injuring eight visitors at the site, according to local media.

The Japan Meteorological Agency (JMA) said that the eruption took place shortly before noon. The agency upgraded its 5-stage volcanic alert level to 3, urging people not to approach the mountain, named the Ontake, reported Japan's broadcaster NHK.

Local fire department said that they have received several emergency calls about injured climbers and a local official was quoted as saying that at least eight people were injured.

The JMA forecast that further eruptions may affect nearby residents and warned of large volcanic cinders which fall within a 4 km radius of the crater, said Japan's Kyodo News.

The volcano's last eruption was in 1979 when it expelled over 200,000 tons of ash. It also went through a minor eruption in 1991 and caused multiple volcanic earthquakes in 2007, reports said.
Sources: Xinhua - globaltimes.cn
  • A volcano in central Japan erupted on Saturday injuring at least eight people and forced aircraft to divert flying routes to void the billowing ash cloud.

The meteorological agency said Mt. Ontake, which straddles Nagano and Gifu prefectures, erupted at around 11:53am (0253 GMT), sending smoke down the mountain's south slope for more than three kms (1.9 miles).

"Seven people were lightly injured and one person suffered serious injuries as a result of the eruption," Makoto Hasegawa of the Nagano prefecture fire department told Reuters.

The eruption is still taking place, he said.

"Airplanes are diverting their flying routes to avoid the ash cloud," said Hasegawa.

NHK public broadcaster showed footage of the mountain sending thick, grey smoke into the air.

Mt. Ontake is located some 200 km (125 miles) west of Tokyo. No nuclear power plants are located nearby.
Reuters - timesofindia.indiatimes.com

Τρίτη, 16 Σεπτεμβρίου 2014

Over 12,000 evacuated ahead of Philippines volcano eruption

MANILA - The Philippines has evacuated more than 12,000 people from around the foot of its most active volcano as the crater glows red and authorities warn of a possible eruption.
Mount Mayon, known for its near-perfect cone shape in the coconut-growing central Bicol region, has recorded a series of recent quakes and rockfalls, indicating a possible eruption within weeks.
"We are now raising the alert status of Mayon Volcano from alert level 2 to 3," Renato Solidum, head of the Philippine Institute of Volcanology and Seismology (Phivolcs), said on Tuesday.

Joey Salceda, governor of the central Albay province, said more than 12,000 people were forcibly evacuated.
"What the alert level 3 did was to fast-track the preparation to evacuate 12,000 families in the 6-8 km extended danger zone," he said.
The evacuees would be housed in temporary shelter for as long as three months, he said. More villagers, facing the southeastern crater rim, would be moved to safer areas if Mayon erupts.
Troops were enforcing the no-go area, preventing people from returning home.
A major eruption is not expected to impact the country's farm output with mostly subsistence farmers tilling the land around the volcano. There is also no major industry in the area.
But an eruption could boost tourism, as happened the last time Mayon erupted in 2009. It has erupted nearly 50 times over the last 600 years.
The most destructive eruption was in February 1841, when lava flows buried a town and killed 1,200 people. 

Κυριακή, 31 Αυγούστου 2014

Iceland issues red alert after new eruption near volcano

Iceland on Sunday raised its aviation alert over its largest volcano to the highest level of red after a new eruption nearby.

The alert entails a ban on all flights below 6,000 feet (1.8 kilometers) within a radius of 10 nautical miles (18.5 kilometer) of Bardarbunga.

"All airports are open. The area has no effect on any airports," the Civil Protection Office said in a statement.

Sunday was the third time in a week that Iceland issued a red alert for aviation due to seismic activity near Bardarbunga.

The latest eruption happened roughly in the same area of another eruption on Friday, the authorities said. Bardarbunga, in the southeast of the country, is Iceland's second-highest peak.

A major explosion at Bardarbunga, located under Europe's largest glacier, could signal a replay of the global travel chaos triggered when another Icelandic peak blew four years ago, unleashing a massive ash cloud across Europe.

Source: AFP - globaltimes.cn
31/8/14 (1/9/14)


  • M 5.0 - ICELAND - 2014-08-31 12:01:47 UTC

Magnitude    mb 5.0
Region    ICELAND
Date time    2014-08-31 12:01:47.6 UTC
Location    64.71 N ; 17.44 W
Depth    2 km

    224 km E of Reykjavík, Iceland / pop: 113,906 / local time: 12:01:47.6 2014-08-31
113 km S of Akureyri / pop: 16,563 / local time: 12:01:00.0 2014-08-31 


  • M 4.6 - ICELAND - 2014-08-31 16:12:36 UTC

Magnitude    Mw 4.6
Region    ICELAND
Date time    2014-08-31 16:12:36.5 UTC
Location    64.78 N ; 17.27 W

   15 km
Distances    234 km E of Reykjavík, Iceland / pop: 113,906 / local time: 16:12:36.5 2014-08-31
108 km S of Akureyri / pop: 16,563 / local time: 16:12:00.0 2014-08-31 


Κυριακή, 24 Αυγούστου 2014

Strong quakes shake Icelandic volcano

Two strong earthquakes on Sunday shook Iceland's largest volcano, which is on orange alert lowered from red one for one day amid fears of an imminent eruption, the Icelandic Met Office said.

A large explosion at the Bardarbunga volcano could signal a replay of the global travel chaos caused by the eruption of another Icelandic peak four years ago, which created a massive ash cloud across Europe.

The earthquakes were listed on the Met Office's website with intensities of 5.3 and 5.1 on the Richter scale, which makes them the strongest recorded in the region since the current seismic cycle began last week.

On Saturday, Iceland raised its alert over the Bardarbunga volcano to the highest level and closed airspace in the area, but all of Iceland's airports remained open.

Met Office official Gunnar Gudmundsson told Icelandic public broadcaster RUV that it was difficult to say whether the earthquakes indicated an increased risk of an eruption.

Police said some 300 people had been evacuated in a popular tourist area located north of the Bardarbunga volcano, which lies in southeast Iceland.

"This is quite an extensive evacuation, but it is only in the canyons themselves, not in the inhabited area," Husavi chief of police Svavar Palsson told local media.

"Most of the people were foreign tourists."

The authorities said they had decided not to evacuate residents of nearby areas, but encouraged them to be alert and have their mobile phones switched on at all times.

Police said that the ice layer in the area was between 150 and 400 meters thick.

  • Local authorities fear floods from melting ice could cause serious damage to the country's infrastructure.
Seismologists had recorded an earthquake of 4.5 on the Richter scale on Monday, when Iceland decided to raise its aviation alert to orange, the second-highest level of five.

The eruption of Eyjafjoell, a smaller volcano, in April 2010 caused travel mayhem, stranding more than 8 million people in the widest airspace shutdown since World War II.

"There's nothing we can do if we get another big eruption like that of Eyjafjoell except to interrupt air traffic in the dangerous areas," Icelandic Civil Aviation Administration spokesman Fridthor Eydal was quoted as saying earlier this week.

"It's really the only thing we can do," he said.

Iceland's most active sub-glacial volcano Grimsvotn erupted in 2011, forcing the country to temporarily shut its airspace and sparking fears of a repeat of the Eyjafjoell flight chaos.

Iceland is home to more than 100 volcanic mountains, some of which are among the most active in the world.

Sources: AFP - globaltimes.cn



Σάββατο, 23 Αυγούστου 2014

Iceland issues aviation alert on volcano activity (M 4.7 - ICELAND - 2014-08-23 18:33:06 UTC.....local time: 18:33)

Iceland's Meteorological Office says a subglacial eruption is underway at the Bardarbunga volcano, which has been rattled by thousands of earthquakes over the past week.

Vulcanologist Melissa Pfeffer said seismic data indicates that lava from the volcano is melting ice beneath the Vatnajokull glacier. She said it was not clear when, or if, the eruption would melt the ice and send steam and ash into the air.

Minutes earlier, Iceland raised its aviation alert for the volcano to the highest level of red on Saturday, indicating an eruption that could cause “significant emission of ash into the atmosphere.” Red is the highest alert warning on a five-point scale.

Scientists had planned to fly over the glacier later Saturday to look for changes on the surface but it was not clear if that would still take place.

Authorities had evacuated several hundred people earlier this week from the highlands north of the Vatnajokull glacier as a precaution. The area is uninhabited but popular with hikers.

Iceland sits on a volcanic hot spot in the Atlantic's mid-oceanic ridge and eruptions have occurred frequently, triggered when the Earth's plates move and when magma from deep underground pushes its way to the surface.

A 2010 eruption of the Eyjafjallajokul volcano produced an ash cloud that caused a week of international aviation chaos, with more than 100,000 flights cancelled. Aviation regulators since have reformed policies about flying through ash, so a new eruption would be unlikely to cause that much disruption.

Pfeffer said the amount of ash produced would depend on the thickness of the ice.

“The thicker the ice, the more water there is, the more explosive it will be and the more ash-rich the eruption will be,” she said.


  • M 4.7 - ICELAND - 2014-08-23 18:33:06 UTC.....local time: 18:33
Magnitude    mb 4.7
Region    ICELAND
Date time    2014-08-23 18:33:06.2 UTC
Location    64.70 N ; 17.48 W
Depth    2 km
Distances    222 km E of Reykjavík, Iceland / pop: 113,906 / local time: 18:33:06.2 2014-08-23
113 km S of Akureyri / pop: 16,563 / local time: 18:33:00.0 2014-08-23 


Τετάρτη, 20 Αυγούστου 2014

Iceland orders evacuation due to possible volcano eruption

The National Commissioner of the Icelandic Police (NCIP) announced on Tuesday that the authorities were evacuating the north of Vatnajokull to prepare against a possible eruption at Bardarbunga volcano in southeast Iceland.

The NCIP said in a statement that it has raised the Civil Protection level to Alert Phase as all roads leading into the area were closed, and the authorities in Husavik and Seydisfjordur were evacuating the area north of Vatnajokull.
A surveillance plane of the Icelandic Coast Guard has been ordered to monitor the volcano's situation.

This decision was a safety measure, said the statement, adding the seismic activity in Bardarbunga might lead to a volcanic eruption.

Bardarbunga volcano, located under the 800-meter-thick Vatnajokull glacier, is 225 km northeast from Reykjavik, capital of Iceland. Bardarbunga is Iceland's second highest mountain at 2,000 meters above sea level.

Since the onset of the earthquake swarm at Bardarbunga on Saturday morning, about 2,600 earthquakes have been detected by the earthquake monitoring network of the Icelandic Meteorological Office (IMO).

IMO has raised the danger level from yellow to orange, which indicates the volcano showed heightened or escalating unrest with increased potential of eruption.
If the volcano erupts, a major flood fed by melting ice from the glacier could be expected to the north, the Icelandic National Broadcasting Service reported.

There have been 48 eruptions in Iceland in last 100 years. The latest huge eruption happened in 2010, when the ash emission from the Eyjafjallajokull volcano forced an air travel disruption in Europe.
By AgenciesX Sources: Xinhua  -globaltimes.cn

Τρίτη, 19 Αυγούστου 2014

Threat to flights as Iceland's biggest volcano rumbles

REYKJAVIK: Iceland has warned that its largest volcano is in danger of erupting, four years after millions of air travellers were grounded by a huge ash cloud from another peak.
Scientists believe the ash from an eruption at Bardarbunga could disrupt transatlantic and northern European air traffic, with floods of melting ice likely to cause serious damage to the country's infrastructure.
The Icelandic Meteorological Office raised its aviation alert to the second-highest level on Monday after four days of increasing seismic activity, signalling a heightened risk of eruption.

The eruption of Iceland's smaller Eyjafjoell volcano in April 2010 caused global travel chaos, stranding more than eight million travellers as volcanic ash spread across Europe.
The alert was raised to "orange" after seismologists recorded an earthquake of 4.5 on the Richter scale early on Monday, the strongest in the region since 1996. Roads in a sparsely populated area north of Bardarbunga were closed on Tuesday, as the Meteorological Office said it had recorded some 2,600 tremors over the past four days.
Bardarbunga, Iceland's second-highest peak, rises to more than 2,000 metres, caps the country's largest volcanic system. It sits under the vast Vatnajokull glacier, the country's largest, in the southeast of the island, one of the most active seismic areas on the planet.
Bryndis Brandsdottir, a geophysicist at the University of Iceland, told public broadcaster Ruv on Tuesday that the latest readings indicated that magma was not approaching the surface, but rather remaining "three to seven kilometres below".
"We meet twice a day, but the earthquake activity still comes in waves. There do not seem to be any changes, but it is still very powerful," Vidir Reynisson, department manager at Iceland's Civil Protection Department, told broadcaster 365.
In 2010, the Eyjafjoell volcano under the Eyjafjallajokull glacier, further to the south, shot a massive plume of volcanic debris up to nine kilometres into the sky, blowing ash across to mainland Europe. The ash cloud caused the planet's biggest airspace shutdown since World War II, with fears it could damage aircraft engines.
In 2011, Iceland's most active sub-glacial volcano Grimsvotn erupted, forcing Iceland to temporarily shut its airspace amid fears of a repeat of the Eyjafjoell flight chaos.

Τρίτη, 19 Νοεμβρίου 2013

Científicos descubren volcán bajo hielo de la Antártida occidental.

Científicos de Estados Unidos (EE.UU.) hallaron un volcán activo a un kilómetro bajo el hielo de la Antártida occidental. El hallazgo preocupa a los expertos que temen que las altas temperaturas generadas incremente la tasa de derretimiento del hielo de una de las principales corrientes del continente, informó este lunes la prensa internacional.

El descubrimiento fue publicado el fin de semana en la revista Nature Geosciene y este se produjo cuando los expertos estudiaban la región de Marie Byrd Land, en la Antártida
El profesor de Ciencias Terrestres y Planetarias en la Universidad de Washington en St. Louis, EE.UU., Doug Wiens, quien forma parte del equipo de científicos, detalló que es el hallazgo se realizó al detectar un alto flujo de calor a través de la corteza en la región de Marie Byrd Land que "puede influir en la estabilidad del hielo de la Antártida".
Los investigadores detectaron dos eventos sísmicos en 2010 y 2011 a 25 y 40 kilómetros de profundidad, respectivamente, bajo los glaciares antárticos. Tras un estudio exhaustivo de estos hechos, los expertos se mostraron convencidos de que se trataba de un nuevo volcán que se estaba formando a un kilómetro bajo el hielo.

"Interpretamos estos eventos sísmicos como profundos terremotos de largo período, con base en su frecuencia inusual [de 2 a 4 ciclos por segundo]”, explican los investigadores, que añaden que estos terremotos, que tuvieron lugar por debajo de volcanes activos, son causados por una profunda actividad magmática, y en algunos casos, preceden a erupciones.
Otros científicos conjeturan que el movimiento sísmico provendría de Monte Waesche, un volcán existente cerca del Monte Sidley, pero los científicos no saben cuándo estuvo activo, aunque la capa de ceniza que lo cubre establece que la erupción fue hace ocho mil años.
Como conclusión, los investigadores señalan que estas observaciones "proporcionan una fuerte evidencia de la actividad magmática en curso".
teleSUR - Rt - Abc.es /jl - FC

Κυριακή, 17 Νοεμβρίου 2013

Could volcanoes be causing Antarctic ice loss?

AFP - Accelerating ice loss from the Antarctic ice sheet could be due in part to active volcanoes under the frozen continent's eastern part, a study said on Sunday.
From 2002 to 2011, the average annual rate of Antarctic icesheet loss increased from about 30 billion tonnes to about 147 billion tonnes, the UN's panel of climate scientists reported in September.
The icesheet is a mass of glacial land ice -- one such sheet covers most of Greenland and the other Antarctica, and together they contain most of the freshwater on Earth.
The sheets are constantly moving, slowly flowing downhill and seawards under their own weight. Portions that extend out over the water are called ice shelf.

Previous research has blamed warmer seas swirling in a circular fashion around Antarctica for the quicker pace of icesheet loss from the southernmost continent.
These waters erode ice shelves, went the theory. And as more of the shelves disappeared, the quicker the sheet would flow and lose ice to the sea.
But in a new paper in the journal Nature Geoscience geologists led by Amanda Lough at Washington University in St. Louis, Missouri, suggested that, in West Antarctica, the faster flow may be also be due to volcanoes.
These heat the underside of the ice, causing melting that lubricates the flow, they suggested.
Evidence for this comes from recently deployed sensors that recorded two "swarms" of seismic activity under Mary Byrd Land, a highland region of West Antarctica, in 2010 and 2011.
Using ice-penetrating radar, the team found an intriguing elliptically-shaped deposit, measuring about 1,000 square kilometres (386 square miles) in the area, at a depth of 1,400 metres (4,550 feet).
  • The deposit is believed to be volcanic ash, spewed out by an enormous eruption some 8,000 years ago -- an estimate reached on the assumption it has since been covered by ice accumulating at the rate of 12.5 centimetres (five inches) a year.
"Together, these observations provide strong evidence for ongoing magmatic activity and demonstrate that volcanism continues to migrate southwards."
Several volcanoes were known to exist in West Antarctica, but none were thought to be active.
"Eruptions at this site are unlikely to penetrate the 1.2 to two-km (0.75-1.2-mile) -thick overlying ice, but would generate large volumes of melt water that could significantly affect ice stream flow," said the study.

Σάββατο, 26 Οκτωβρίου 2013

Νέα έκρηξη στο ηφαίστειο Αίτνα/Italy's Mount Etna volcano erupts.(2 video)

Λάβα και ηφαιστειακή τέφρα γέμισε ο ουρανός της Σικελίας, έπειτα από την έκρηξη που σημειώθηκε στο ηφαίστειο του όρους Αίτνα.

Νέα έκρηξη σημειώθηκε στο υψηλότερο και πιο ενεργό ηφαίστειο στην Ευρώπη, στο όρος Αίτνα, στέλνοντας καυτή λάβα στον αέρα και ένα σύννεφο ηφαιστειακής τέφρας στον ουρανό της Σικελίας.

Λόγω της έκρηξης πάντως δεν χρειάστηκε να εκκενωθούν ορεινά χωριά ούτε προκλήθηκαν σοβαρά προβλήματα, αν και ο εναέριος χώρος πάνω από τη Σικελία έκλεισε για λίγες ώρες το πρωί, σύμφωνα με τις αρχές του αεροδρομίου στην Κατάνια.

Το ηφαίστειο στο όρος Αίτνα βρίσκεται σε σχεδόν συνεχή δραστηριότητα, αν και η τελευταία μεγάλη έκρηξη σ΄ αυτό είχε καταγραφεί το 1992.
efsyn.gr με πληροφορίες από ΑΠΕ-ΜΠΕ

  • Italy's Mount Etna volcano erupts.
(Reuters) - Europe's tallest and most active volcano Mount Etna erupted on Saturday, spewing glowing lava into the air and sending a vast plume of smoke over the southern Italian island of Sicily.
The eruption did not require any mountain villages to be evacuated or cause significant disruption, though airspace over Sicily was briefly closed on Saturday morning, according to Catania airport.
The volcano is in almost constant activity, although the last major eruption was in 1992. The latest eruption was preceded by a series of underground tremors on Friday.
(Reporting by Naomi O'Leary; editing by Mike Collett-White)


Δευτέρα, 19 Αυγούστου 2013

VIDEO. Au Japon, une éruption volcanique recouvre une ville de cendres - Record eruption at Japanese volcano, city covered in ash

Une escouade de balayeurs et de véhicules équipés de canons à eau était à pied d'œuvre, lundi 19 août, à Kagoshima (Japon). La veille, un volcan voisin, l'un des plus actifs du pays, a craché une immense colonne de cendres.

Un nuage de poussière s'est élevé à 5 000 m d'altitude, dimanche après-midi, lorsque le volcan Sakurajima, situé à 10 km de la ville méridionale de Kagoshima, est entré en éruption. C'est son 500e accès d'humeur cette année, mais aussi l'un des plus violents.

Les cendres se sont ensuite dispersées dans toute la région, retombant notamment à Kagoshima où la circulation a été perturbée dimanche, avec des automobilistes contraints d'allumer leurs phares en plein après-midi.
Lundi, une soixantaine de balayeurs nettoyaient la ville de ce manteau argenté. "Il n'y a pas de signe avant-coureur d'une éruption de grande ampleur" avec dégagement important de lave, a assuré un responsable local de l'Agence de météorologie du Japon. Un filet de lave est en effet sorti des entrailles du volcan dimanche, mais sans danger pour la population.

Προβολή μεγαλύτερου χάρτη

  • Record eruption at Japanese volcano, city covered in ash

Sakurajima, one of the world’s most active volcanoes, has covered the city of Kagoshima in southern Japan in ash and spewed a record-high cloud of smoke 5 kilometers into the sky.
The smoke plume was the highest since 2006, when meteorologists began storing data on smoke during eruptions from the volcano.
Sunday’s eruption was the largest at Sakurajima in decades, but the 500th recorded this year, according to Wired.com.
Lava flowed 1 kilometer from the volcano, but no injuries or damage were reported.
People living in Kagoshima, a city of 600,000 people 10 kilometers from the volcano, wore masks and raincoats, and took umbrellas to protect themselves from the hazardous ash.

Volcanic ash causes respiratory problems and can damage eyesight. Minerals present in volcanic ash can also trigger fatal lung diseases.
Local officials seemed unfazed by the latest eruption, however.
"The smoke was a bit dramatic, but we are kind of used to it," a city official who requested anonymity told AP.
Railway services were suspended in the city, so that ash could be removed from the tracks, and car drivers were forced to turn on their headlights as the sky went dark.
By Monday morning, the air was clearer as hundreds of rubbish trucks and sprinklers were used to cope with the aftermath. Masked residents helped sweep up the ash.
Japan’s Meteorological Agency warned that volcanic activity could continue and advised residents against approaching the volcano. However, the agency said it was not expecting any larger eruptions soon.

Κυριακή, 23 Δεκεμβρίου 2012

Volcano alert on Chile-Argentina border

Low-level alert issued after Copahue Volcano began spewing ash, but officials say no need yet to evacuate people.
Southern Chile's Copahue Volcano has begun spewing plumes of ash skyward, prompting authorities there and in neighbouring Argentina to issue a low-level alert.
The 2,965-metre-high Copahue volcano, which straddles in Argentina's Neuquen province and Chile's Biobio region, began belching ash and gas early on Saturday, but officials said on Sunday it's still in an early eruption stage.

Hernan de Solminihac, Chile's mining minister, said the volcano's smoke plume led Argentine emergency officials to issue a yellow alert and constantly monitor its activity in case of a full eruption.
Authorities alerted residents in a small nearby community, Biobio, and were monitoring the activity closely.
Mayor Victor Lobos told the AFP news agency that locals were concerned but no lava or rocks have been expelled from the crater. "We need to stay calm," Lobos added.
Officials said there was no need yet to evacuate people near the volcano, which is part of the Andes mountain chain.
Flights expected to pass by the area around the volcano have been warned.
A volcano in southern Chile erupted last year, forcing the cancellation of hundreds of flights and the evacuation of more than 600 people.

Οι νεκροί Έλληνες στα μακεδονικά χώματα σάς κοιτούν με οργή

«Παριστάνετε τα "καλά παιδιά" ελπίζοντας στη στήριξη του διεθνή παράγοντα για να παραμείνετε στην εξουσία», ήταν η κατηγορία πο...