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Mon, 19 Feb 2018
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Volcanoes

Attention

Warning issued amid seismic activity at Mount Lokon in North Sulawesi, Indonesia

Mount Lokon in Tomohon, North Sulawesi, in this undated file photo.
© Lucky Pransiska
Mount Lokon in Tomohon, North Sulawesi, in this undated file photo.
Local authorities have prohibited residents and visitors from coming within a 1.5-kilometer radius from the crater of Mount Lokon in Tomohon, North Sulawesi, amid increased volcanic activity.

The volcano had shown increased seismic activity marked by tremors since Thursday, said Farid, the head of Lokon's monitoring post.

Authorities have issued a waspada (Level II) alert level for the volcano.

"The tremors from Mt. Lokon suggest that gas and magma are migrating, which means pressure has been accumulating," Farid said on Saturday.

The Lokon monitoring post has been coordinating with the Tomohon Disaster Management Agency (BPBD) since Friday in taking preventive measures.

Binoculars

Alarm as Philippines' Mayon Volcano shows 'abnormal behavior'

Mayon volcano

Mayon volcano
The Philippine Institute of Volcanology and Seismology (Phivolcs) raised Alert Level 1 over Mayon Volcano in Albay province after it recorded 25 volcanic earthquakes on Monday and the sulfur-dioxide (SO2) emission went significantly higher than the standard measurement.

In its latest bulletin, Phivolcs said the quakes that rocked the volcano on Monday and the spewing of an above normal SO2 gas signify the volcano remains restive. SO2 emission was measured at 633 tons, which is significantly higher than the standard measurement of 500 per day

The volcanic quakes brings to 91 the total number of quakes that jolted Mount Mayon for the past two days.

When asked about the increasing SO2 emission, Phivolcs volcanologist Ed Laguerta said the abnormal emission could either be due to steam degassing or magma pressure beneath the volcano vent.

Snowflake Cold

Future volcanic eruptions could cause more climate cooling

volcano eruption tent camping
Major volcanic eruptions in the future have the potential to affect global temperatures and precipitation more dramatically than in the past because of climate change, according to a new study led by the National Center for Atmospheric Research (NCAR).


The study authors focused on the cataclysmic eruption of Indonesia's Mount Tambora in April 1815, which is thought to have triggered the so-called "year without a summer" in 1816. They found that if a similar eruption occurred in the year 2085, temperatures would plunge more deeply, although not enough to offset the future warming associated with climate change. The increased cooling after a future eruption would also disrupt the water cycle more severely, decreasing the amount of precipitation that falls globally.

The reason for the difference in climate response between 1815 and 2085 is tied to the oceans, which are expected to become more stratified as the planet warms, and therefore less able to moderate the climate impacts caused by volcanic eruptions.

Seismograph

Fears Tenerife's Mount Teide volcano in the Canary Islands is about to BLOW following 22 earthquakes in 4 days

A seismic swarm of 22 earthquakes have rocked Tenerife in just four days sparking fears Mount Teide (pictured) could be about to erupt

A seismic swarm of 22 earthquakes have rocked Tenerife in just four days sparking fears Mount Teide (pictured) could be about to erupt
A swarm of 22 earthquakes has rocked Tenerife in just four days sparking fears Mount Teide could be about to erupt.

The tremors struck the popular tourist village of Vilaflor on the slopes of the 12,000ft volcano last week.

They were relatively minor quakes, however. The most power was a tremor of magnitude 1.4 striking at 11.05am local time (11:05 GMT, 06:05 GMT) on Tuesday morning.

Mount Teide's 3,718-metre summit is the highest point in Spain and a major tourist attraction with around three million tourists visiting every year.

The seismic swarm, recorded at an average depth of six to eight kilometres below sea level, took place over four days from 28 October to 31 October.

The Volcanological Institute of the Canary Islands (Involcan) have been trying to calm people.

Comment: This report should also viewed in the wider context of the increased seismic activity noted elsewhere around this archipelago over the last 4 weeks, as illustrated by the following reports:-

Canary Island volcanologists monitoring eruption, tsunami risks from Cumbre Vieja after recent wave of tremors

La Palma volcano in the Canary Islands hit by hundreds of earthquakes in 15 hours

Scientists on alert as underwater volcano Tagoro in the Canary Islands bursts into life

40 earthquake tremors in 48 hours hit La Palma, Canary Islands


Attention

Mayon Volcano in the Philippines remains on alert level 1 after 57 volcanic quakes

Mayon Volcano in Albay province is Bicol region’s top attraction.
© Michael B. Jaucian
Mayon Volcano in Albay province is Bicol region’s top attraction.
The Philippine Institute of Volcanology and Seismology (Phivolcs) said Monday, October 30, that Mayon Volcano remains on alert level 1 following the occurrence of at least 57 volcanic quakes since Saturday, indicating its sustained abnormal state.

Alert Level 1 means Mount Mayon is having an "abnormal condition."

"Although this means that presently no magmatic eruption is imminent, it is strongly advised that the public refrain from entering the 6-kilometer radius Permanent Danger Zone due to the perennial life-threatening dangers of rockfalls, landslides/avalanches at the middle to upper slope, sudden ash puffs and steam-driven or phreatic eruptions from the summit," the Phivolcs 8 a.m. bulletin stated.

Phivolcs resident volcanologist Ed Laguerta said the agency is closely monitoring the surge of volcanic earthquakes currently taking place for the past three days, specifically the parameters that could trigger the volcanic tremors.

Attention

Mount Sinabung erupts in North Sumatra, Indonesia

Mount Sinabung eruption.

Mount Sinabung eruption.
Mount Sinabung has erupted, producing hot clouds of 4.5km from east to southeast, Head of Data and Information Center of National Disaster Management Agency's (BNPB) Public Relations Sutopo Purwo Nugroho said.

Sutopo said the eruption occurred at 9:59 PM, Tuesday (24/10/2017), with column height of 2km.

He added that Mount Sinabung erupted once again on the same day at 2:45 pm.

During the second eruption, Mount Sinabung produced hot clouds that slid as far as 3km from east to southeast. The column height was 1km.

"Mount Sinabung erupted again on 10/24/2017, 2:45 pm. Hot clouds glide 3km from the east to southeast. Column height was 1km. It was a 300-second-long quake," said Sutopo, in his Twitter, @Sutopo_BNPB.

Attention

Strong explosions on Stromboli volcano, Italy

Stromboli volcano

Stromboli volcano
A strong explosion occurred at the volcano this afternoon at 16:04:40 local time. Bombs were landing on a vast area around the crater terrace including the viewing area on Pizzo, but fortunately, it seems that no people were there at the time of the eruption. Video kindly provided by: INVG Catania


Attention

Reports of ashfall as Tinakula volcano erupts in the Solomon Islands

A satellite image of Tinakula, Solomon Islands, taken in 2012
© NASA Earth Observatory
A satellite image of Tinakula, Solomon Islands, taken in 2012
Authorities in the Solomon Islands are trying to work out if there's been any damage after a remote volcano erupted early this morning.

The volcano, Tinakula, which forms an uninhabited island in the northern Temotu province, roared to life at about 2am today.

Villages on nearby islands have reported heavy ashfall.

The director of the National Disaster Management Office in Honiara, Loti Yates, said a police patrol had been deployed from the provincial capital, Lata.

He said information had been slow to trickle out of the remote area, and it could be some time before the full situation was known.

An aviation warning has been issued for the Santa Cruz area.

Attention

New fears Bali's Mount Agung could erupt at any moment as volcanic activity soars and magma rises to the surface

There are fresh fears that Bali's Mount Agung (pictured) could erupt after the volcano reached peak earthquake activity, with thousands of tremors a day

There are fresh fears that Bali's Mount Agung (pictured) could erupt after the volcano reached peak earthquake activity, with thousands of tremors a day
There are fresh fears that Bali's Mount Agung could erupt after the volcano reached peak earthquake activity today.

Up to 1,000 tremors have been recorded in the area each day, with the frequent movements indicating a flow of magma towards the surface, Perth Now reports.

It comes as Indonesia's Mount Sinabung erupted on Sunday, causing evacuations and spewing ash half a kilometre into the air.

The activity at Mount Agung is being closely monitored by airlines, with travel to Bali expected to be severely affected should an eruption occur.

An emergency operations centre has been set up at Bali's International Airport, with travel insurance companies also imposing restrictions on policies in the wake of the warnings.

Attention

Mount Sinabung spews clouds of ash and prepares to erupt as authorities plan for emergency evacuations in Indonesia

Lava flows from crater of Mount Sinabung during an eruption in Karo, Indonesia, on Sunday

Lava flows from crater of Mount Sinabung during an eruption in Karo, Indonesia, on Sunday
A huge volcano in Indonesia erupted on Sunday, spewing hot ash into the air.

Thousands were evacuated after Mount Sinabung in Karo, Indonesia, started erupting and spewing ash half a kilometre into the air.

The volcano began erupting in 2010 after lying dormant for four centuries.

A large eruption in May 2016 killed seven people.