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Sat, 27 Nov 2021
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Volcanoes

Bizarro Earth

Indonesia Mount Bromo volcano erupts

Mount Bromo volcano
© Unknown
Jakarta - Several international flights to and from the resort island of Bali were cancelled or diverted Thursday to avoid dangerous ash spewing from an Indonesian volcano, officials said.

Ash from rumbling Mount Bromo, a popular attraction in East Java province, had spread to the island popular with foreign tourists and surfers.

"We received information from Darwin that the ash from Bromo has reached 5,500 metres in the southeast direction and has affected some parts of Bali," transport ministry spokesman Bambang Ervan told AFP.

"As a safety precaution, we've sent out an advisory to airlines to warn them about the ash situation so air crew can avoid the affected areas," he added.

Indonesian aviation authorities were monitoring the situation but there were no plans to temporarily close the airport yet, he added.

"The airport is still open, some flights are still landing. We're checking how bad the situation is and how much worse it can get before deciding what the next step will be," Ervan said.

Bizarro Earth

"Gooey" New Mud Volcano Erupts From Arabian Sea

Mud Volcano
© esse Allen and Robert Simmon, EO-1/NASA
Satellite pictures of the Pakistani coast in February (left) and November 2010.
There's a new island in the azure waters off Pakistan, but you might want to hold off on vacation planning: The tiny dot is a mud volcano that will likely disappear before it sees 1,001 Arabian nights.

Pakistani fishers reported the new mud volcano in the Arabian Sea in late November, and NASA's Earth Observing-1 satellite snapped a picture of it (above) on January 11. The volcano was not in a satellite picture of the same region taken last February.

According to NASA, mud volcano "islands" have appeared in the Arabian Sea before, and most have washed away within a few months. In fact, the January picture shows tan sediments steaming from the new mud volcano, suggesting it is eroding and will soon vanish.

Mud volcanoes, which can appear on land or underwater, form when underground layers of silt or clay become pressurized either by tectonic activity or by a buildup of hydrocarbon gases.

Bizarro Earth

Kirishima Volcano Violently Erupts in Japan

The Kirishima Volcano, located in Japan, erupted violently this morning hurling rock bombs and plumes of ash up into the atmosphere. Frequent small-to-moderate explosive eruptions have been recorded since the 8th century.

The volcano is located in southern Japan, along the pacific ring of fire, and is uniquely situated directly above a tectonic plate boundary.

Kirishima Volcano
© 373news.com
Kirishima has erupted 9 times during the past 100 years, 2 of which were classified as VEI-2 eruptions (Volcanic Explosivity Index). The last VEI-2 eruption was during 1959 when it pumped 3.2 million cubic meters of 'tephra' up onto the planet surface and into sky. Time will tell how this new eruption will be classified.

Volcanic Ash in the atmosphere will severely damage jet engines, and can cause global temperatures to decrease depending on quantity.

Hourglass

Volcano in Russian Far East continues to spew ashy plume

Kizimen Volcano
© RIA Novosti. M. Pevzner
Kizimen Volcano
Petropavlovsk-Kamchatsky -- The active Kizimen Volcano on Russia's Kamchatka Peninsula continues spewing plumes of ash at a height of up to six kilometers (3.72 miles), a representative for the Russian Academy of Sciences' Institute of Volcanology and Seismology said on Thursday.

"Seismologists registered about 200 local tremors in the vicinity of the volcano over the past 24 hours," the spokesman said.

According to him, bad weather satellites cannot track the direction or the distance of the ash plume which has repeatedly caused falling ash in populated areas on the peninsula, including Petropavlovsk, where 60% of the Kamchatka Peninsula residents live.

However, the ash could affect the operations of aircraft. Particles of ash may get into the mechanisms of airliners and provoke an accident.

There are more than 150 volcanoes on Kamchatka, 29 of them active.

Bizarro Earth

Violent Seismic Activity is Tearing Africa in Two

volcano Africa
© University of Bristol / Lorraine Field
Indeed, Africa is starting to split apart. The first tear came in the last million years, resulting in the Red Sea and the Gulf of Aden. And now the earth is opening up in a massive expanse of land stretching south from Ethiopia to Mozambique.
High-Speed Geology

The fissures began appearing years ago. But in recent months, seismic activity has accelerated in northeastern Africa as the continent breaks apart in slow motion. Researchers say that lava in the region is consistent with magma normally seen on the sea floor -- and that water will ultimately cover the desert.

Cynthia Ebinger, a geologist from the University of Rochester in New York, could hardly believe what the caller from the deserts of Ethiopia was saying. It was an employee at a mineralogy company -- and he reported that the famous Erta Ale volcano in northeastern Ethiopia was erupting. Ebinger, who has studied the volcano for years, was taken aback. The volcano's crater had always been filled with a bubbling soup of silver-black lava, but it had been decades since its last eruption.

The call came last November. And Ebinger immediately flew to Ethiopia with some fellow researchers. "The volcano was bubbling over; flaming-red lava was shooting up into the sky," Ebinger told Spiegel Online.

The earth is in upheaval in northeastern Africa, and the region is changing quickly. The desert floor is quaking and splitting open, volcanoes are boiling over, and seawaters are encroaching upon the land. Africa, researchers are certain, is splitting apart at a rate rarely seen in geology.

Bomb

Yellowstone Has Bulged as Magma Pocket Swells

Yellowstone
© Mark Thiessen, National Geographic
Steam rises from Castle Geyser in Yellowstone National Park
Some places saw the ground rise by ten inches, experts report.

Yellowstone National Park's supervolcano just took a deep "breath," causing miles of ground to rise dramatically, scientists report.

The simmering volcano has produced major eruptions - each a thousand times more powerful than Mount St. Helens's 1980 eruption - three times in the past 2.1 million years. Yellowstone's caldera, which covers a 25- by 37-mile (40- by 60-kilometer) swath of Wyoming, is an ancient crater formed after the last big blast, some 640,000 years ago.

(See "When Yellowstone Explodes" in National Geographic magazine.)

Since then, about 30 smaller eruptions - including one as recent as 70,000 years ago - have filled the caldera with lava and ash, producing the relatively flat landscape we see today.

Phoenix

Philippines: Mt. Bulusan spews ash anew

Image
© Unknown
Restive Bulusan Volcano in Sorsogon acted up again onTuesday, spewing ash in a predawn explosion before dawn, state volcanologists said.

The Philippine Institute of Volcanology and Seismology (Philvolcs) said the quake occurred at 2:58 a.m., accompanied by a rumbling sound audible at Monbon village in Irosin town.

"(But) the explosion was not observed because the volcano summit was covered by thick clouds. Field investigation conducted this morning confirmed the presence of traces of ash deposits in Monbon, Irosin," Phivolcs said on its website on Tuesday.

Phivolcs said Bulusan's alert level remains at "1." The alert level had been at "1" since November last year.

Bizarro Earth

Philippines - 3 Volcanoes in Luzon Acting Up - Phivolcs

Mayon Volcano
© Tam3rd/Wikimedia Commons
Mayon Volcano in Albay, Philippines
Three active volcanoes in Luzon showed signs of increased activity Sunday, exhibiting rock fall, moderate steam, and minor quakes in their respective vicinities, state volcanologists reported.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said signs of unrest were detected in Mayon, Taal, and Bulusan volcanoes during its 24-hour observation.

Phivolcs reported having observed one rock fall at Mayon Volcano in Albay and its steam was white and moderate.

Meanwhile, crater glow was not observed due to thick clouds covering Mayon's summit.

"Results of ground deformation surveys conducted last November and December 2010 showed that the volcanic edifice remains inflated based on 2008 baseline data," the Phivolcs said.

Alert Level 1 has been raised due to Mayon's current activity.

While no eruption is imminent, Phivolcs strongly prohibited the public from wandering within the six-kilometer radius permanent danger zone (PDZ) due to the continuing threat from sudden small explosions and rock falls from the upper and middle slopes of the volcano.

Bizarro Earth

Sicily: Spectacular Night Footage of Mount Etna Eruption

Europe's highest active volcano, Mount Etna has begun spewing lava again. The Sicilian volcano sent bright orange balls of lava straight up into the air and a steady glowing orange flow ran down its side. According to the ANSA news agency, flames went hundreds of metres into the air and could be seen from the nearby towns of Catania and Taormina.

Bizarro Earth

Volcanic Floods Force Thousands to Flee Homes in Indonesia

Nearly 9,000 people have escaped floods of rainwater mixing cold lava and mud resulted by the eruption of Mount Merapi volcano in October at Yogyakarta of Java island, Indonesia, an official said Wednesday.

The number of evacuee kept rising since rain poured down the slope of the volcano on Jan. 10, an official of the Disaster Management and Mitigation Agency who asked to be anonymous said.

"Today, more than 1,500 people escaped the floods, putting the total evacuees since Jan. 10 to 8,830 people, the figure may rise, " he said at the agency's office.

The evacuees had taken shelters to government office, buildings, schools, and mosques, the official said.

The floods cause a river to overflow and damaged houses and other buildings, he said.

The flooding has killed one so far.