Translated from Spanish by Microsoft
From 8:49 H, he#Popocatépetl increased activity with the continuous emission of ash that the winds disperse to the northeast on the side of Puebla.
Translated from Spanish by Microsoft
So the spectacular explosion of the volcano#Popocatépetl a few minutes ago, 7:39 hrs. View of San Nicolás de los ranchos #Puebla. Via @jabed1 @Popocatepetl_MX GiF
Volcanologia Chile on Twitter
Translated from Spanish by Microsoft
Violent explosion was recorded tonight at 23:03 local time in#NevadosdeChillan which ejecteded incandescent fragments by hundreds of meters, in addition to the probable formation of a pyroclastic flow towards the NE slope. The dome is likely to have been destroyed partially
Kilauea volcano (Hawai'i) activity update: Longest non-eruptive period since 1982; probable end of 1983-2018 eruption
Saturday Nov 10, 2018 18:31 PM | BY: MJFLEGEN
It has now been 66 days since lava was last at the surface at Kilauea. That is the longest gap since the start of the eruption in 1983- there were 65 days between Episode 2 and 3- and the longest since the 4 months between the two 1982 eruptions. And with no signs of imminent renewal, it seems very likely that the current gap will reach the 90 day mark on December 5- which means the eruptive period that started in 1983 has come to end. When eruptive activity does eventually return, it will be an entirely new eruption.
Kilauea
Shield volcano 1277 m (4,190 ft), Hawai'i, 19.41°N / -155.29°W
Nearby recent earthquakes (within 30km radius):
Earthquake list: past 7 days (only M>=-0.8) (64 quakes)
Pacific Vanuatu
Uncertainty for displaced Ambeans waiting to return home
4:55 pm on 12 November 2018
Vanuatu's National Disaster Management Office says it is unclear whether Ambae evacuees will be permitted to return to the island this month as planned.
The government ordered a compulsory evacuation of the 10,000 people on Ambae over two months ago, following the eruption of the Manaro Volcano.
Those displaced are anticipating returning to their homes when the government's state of emergency is lifted at the end of the month.
But a NDMO spokesperson Presley Tari said continued minor volcanic activity on the island means they could be at risk.
"It's still a risk for people to live there. We have some few ash coming down again - but the island is getting back green again. There have been a few times of eruptions, minor eruptions."
Presley Tari said the NDMO is awaiting a decision from the government as to when Ambaens can return to the island.
Bread-crust bubble
\Bred krəst ˈbəb(ə)l\ n.
Tiny, gas-filled beads of volcanic ash with a scaly surface.
Scientists have identified a new type of volcanic ash that erupted from a volcano in central Oregon roughly 7 million years ago. The particles are similar to larger bread-crust bombs, which form as gases trapped inside globs of lava expand, cracking the bombs’ tough exterior. Bread-crust bubbles, each no more than a millimeter wide, have a distinctly crackled surface that can reveal secrets about how volcanoes erupt, researchers reported November 4 at the Geological Society of America annual meeting in Indianapolis.
The researchers had been sifting through other types of volcanic ash in the lab when they spotted the strange ash formations. Viewing the bits of ash through a scanning electron microscope revealed their crusty texture, indicating the gas bubbles expanded rapidly on their way up to Earth’s surface, but did not pop. Analysis of the texture also indicated the bubbles’ depth when they first exploded in the foamy magma. In the case of the Oregon sample, says volcanologist Ben Andrews of the Smithsonian Institution in Washington D.C., the frothy ash formed roughly 500 to 2,000 meters deep — a short distance, geologically — and erupted from the volcano at a rate of about 30 to 80 meters per second.
Loafing around
Newfound volcanic ash is like a mini-me version of bread-crust bombs, which get their name from having a cracked surface that can resemble a loaf of bread. Bread-crust bombs form as gases trapped within a glob of hard-shelled lava expand. This one, about 15 centimeters in diameter, erupted from Mount St. Helens in Washington.
“Where magmas are sitting before they erupt and how fast they erupt — that gives us an idea how to forecast future eruptions,” says Andrews, who discovered the spherical ash particles along with volcanologist Steve Quane of Quest University in British Columbia. The team is now collaborating with another group of researchers to study bread-crust bubbles collected from Laguna del Maule volcano in Chile.
Further Reading
T. Sumner. Natural concrete keeps lid on Italian volcano. Science News Online, July 9, 2015.
T. Sumner. Volcanic lightning forges tiny glass balls from airborne ash. Science News Online, March 3, 2015.
Citations
S. Quane and B. Andrews. Bread crusted bubbles: quantifying the brittle-ductile transition in volcanic conduits. Geological Society of America Meeting, Indianapolis, November 4, 2018.
From 8:49 H, he
Translated from Spanish by Microsoft
So the spectacular explosion of the volcano
Volcanologia Chile on Twitter
Translated from Spanish by Microsoft
Violent explosion was recorded tonight at 23:03 local time in
Kilauea volcano (Hawai'i) activity update: Longest non-eruptive period since 1982; probable end of 1983-2018 eruption
Saturday Nov 10, 2018 18:31 PM | BY: MJFLEGEN
It has now been 66 days since lava was last at the surface at Kilauea. That is the longest gap since the start of the eruption in 1983- there were 65 days between Episode 2 and 3- and the longest since the 4 months between the two 1982 eruptions. And with no signs of imminent renewal, it seems very likely that the current gap will reach the 90 day mark on December 5- which means the eruptive period that started in 1983 has come to end. When eruptive activity does eventually return, it will be an entirely new eruption.
Kilauea
Shield volcano 1277 m (4,190 ft), Hawai'i, 19.41°N / -155.29°W
Nearby recent earthquakes (within 30km radius):
Earthquake list: past 7 days (only M>=-0.8) (64 quakes)
Pacific Vanuatu
Uncertainty for displaced Ambeans waiting to return home
4:55 pm on 12 November 2018
Vanuatu's National Disaster Management Office says it is unclear whether Ambae evacuees will be permitted to return to the island this month as planned.
The government ordered a compulsory evacuation of the 10,000 people on Ambae over two months ago, following the eruption of the Manaro Volcano.
Those displaced are anticipating returning to their homes when the government's state of emergency is lifted at the end of the month.
But a NDMO spokesperson Presley Tari said continued minor volcanic activity on the island means they could be at risk.
"It's still a risk for people to live there. We have some few ash coming down again - but the island is getting back green again. There have been a few times of eruptions, minor eruptions."
Presley Tari said the NDMO is awaiting a decision from the government as to when Ambaens can return to the island.
Bread-crust bubble
\Bred krəst ˈbəb(ə)l\ n.
Tiny, gas-filled beads of volcanic ash with a scaly surface.
Scientists have identified a new type of volcanic ash that erupted from a volcano in central Oregon roughly 7 million years ago. The particles are similar to larger bread-crust bombs, which form as gases trapped inside globs of lava expand, cracking the bombs’ tough exterior. Bread-crust bubbles, each no more than a millimeter wide, have a distinctly crackled surface that can reveal secrets about how volcanoes erupt, researchers reported November 4 at the Geological Society of America annual meeting in Indianapolis.
The researchers had been sifting through other types of volcanic ash in the lab when they spotted the strange ash formations. Viewing the bits of ash through a scanning electron microscope revealed their crusty texture, indicating the gas bubbles expanded rapidly on their way up to Earth’s surface, but did not pop. Analysis of the texture also indicated the bubbles’ depth when they first exploded in the foamy magma. In the case of the Oregon sample, says volcanologist Ben Andrews of the Smithsonian Institution in Washington D.C., the frothy ash formed roughly 500 to 2,000 meters deep — a short distance, geologically — and erupted from the volcano at a rate of about 30 to 80 meters per second.
Loafing around
Newfound volcanic ash is like a mini-me version of bread-crust bombs, which get their name from having a cracked surface that can resemble a loaf of bread. Bread-crust bombs form as gases trapped within a glob of hard-shelled lava expand. This one, about 15 centimeters in diameter, erupted from Mount St. Helens in Washington.
“Where magmas are sitting before they erupt and how fast they erupt — that gives us an idea how to forecast future eruptions,” says Andrews, who discovered the spherical ash particles along with volcanologist Steve Quane of Quest University in British Columbia. The team is now collaborating with another group of researchers to study bread-crust bubbles collected from Laguna del Maule volcano in Chile.
Further Reading
T. Sumner. Natural concrete keeps lid on Italian volcano. Science News Online, July 9, 2015.
T. Sumner. Volcanic lightning forges tiny glass balls from airborne ash. Science News Online, March 3, 2015.
Citations
S. Quane and B. Andrews. Bread crusted bubbles: quantifying the brittle-ductile transition in volcanic conduits. Geological Society of America Meeting, Indianapolis, November 4, 2018.