Volcanoes
Authorities issued the highest aviation alert, telling pilots to avoid the area, while also establishing a 3km (1.8-mile) exclusion zone established around the volcano, amid the threat of lava and pyroclastic flows. Eyewitness footage from the scene shows the full extent of nature's wrath.
The initial eruption reportedly lasted for almost eight full minutes and the nearby Solo city international airport was shut down temporarily as a precaution despite being 40km away from the volcano.
There were no casualties or damage reported and apparently, local residents are brushing it off as 'just another eruption'.
On Monday, a report from the Kamchatka Volcanic Eruption Response Team (KVERT) said a "moderate explosive eruption" of Klyuchevskoy was ongoing, and that explosions of ash between 16,400 and 23,000 feet "could occur at any time."
The aviation code of the volcano, which informs of the risk posed to aircraft, was listed as orange, the second highest warning level. An orange code means the ash cloud produced by the eruption has the potential to impact flights. If volcanic ash gets into an aircraft it can lead to the failure of navigation instruments and engines. "Ash particles sucked into an engine can melt quickly and accumulate as re-solidified deposits in cooler parts, degrading engine performance even to the point of in-flight compressor stall and loss of thrust power," the United States Geological Survey (USGS) notes.
According to the KVERT report, the height of the volcanic cloud had reached between 18040 and 19680 feet. The cloud had traveled nine miles and was drifting westwards.
It will be remembered, obviously, for the sudden flank collapse that triggered the tsunami which killed over 400 people on the nearby coastlines of Sumatra and Java.
But the event also has been the source of many scientific insights that could inform future hazard assessments.
And a new possibility is the potential for the frequency of lightning seen at an eruption to give a simple guide to the height of a volcano's towering plume.
It's information that could be of interest to airlines trying to find safe routes for their planes.
Some have argued that the eruption caused an extended volcanic winter that disrupted human dispersal out of Africa and the colonisation of Australasia, although archaeological evidence has been limited.
Now an international study by researchers from Australia, Germany, India, the US and the UK, led by Chris Clarkson from Australia's University of Queensland, has found that human occupation of northern India spanned the Mount Toba eruption.
In a paper in the journal Nature Communications they describe a large collection of stone artefacts from archaeological excavations at Dhaba in the Middle Son River Valley which indicate that the area has been continuously occupied over the last 80,000 years.
Similarities between Levallois tool technology (stone tools created by flint knapping) at Dhaba and those found in Arabia between 100,000 and 47,000 years ago and in northern Australia 65,000 years ago also suggest linkage of these regions by an early modern human dispersal out of Africa, they say.
Footage shared by Webcams de México shows the moment lava burst from the active volcano, engulfing the northern slopes of the peak.
According to Mexican officials, the ensuing ash plume reached 1500 metres — or nearly a mile into the air.
Mexico's CENAPRED disaster agency recorded "130 exhalations" and has issued a warning urging civilians to keep their distance from the volcano.
To wit, the warning as is follows:
"We warn about cave excursions in the Eldvörp area on the Reykjanes Peninsula. Deadly gases were measured yesterday of CO2 as well as deadly oxygen levels in a cave close to a parking lot, popular for hikers."
Comment: The warning comes on the heels of a still active Earthquake swarm near the city of Grindavik and swelling at the Volcano Thorbjorn: Possible magma accumulation on Reykjanes peninsula, Iceland
Tungurahua, has been persistently active since 1999 so wear and tear was inevitable, especially given that the 'Throat of fire,' or 'Black giant' as the Quechua indigenous people named it, has already collapsed twice before thousands of years ago.
"Using satellite data we have observed very rapid deformation of Tungurahua's west flank, which our research suggests is caused by imbalances between magma being supplied and magma being erupted," says geophysical volcanologist James Hickey from the University of Exeter in the UK, whose worrying research was recently published.
Tungurahua previously collapsed at the end of the Late Pleistocene, after which it then rebuilt itself for thousands of years, before collapsing again about 3,000 years ago.
Zealandia is a chunk of continental crust next door to Australia. It's almost entirely beneath the ocean, with the exception of a few protrusions, like New Zealand and New Caledonia. But despite its undersea status, Zealandia is not made of magnesium- and iron-rich oceanic crust. Instead, it is composed of less-dense continental crust. The existence of this odd geology has been known since the 1970s, but only more recently has Zealandia been more closely explored. In 2017, geoscientists reported in the journal GSA Today that Zealandia qualifies as a continent in its own right, thanks to its structure and its clear separation from the Australian continent.
Now, a new analysis of chunks of Zealandia drilled from beneath the ocean floor in 2017 reveals that this continent underwent a paroxysm of change between 35 million and 50 million years ago. As the continental collision process known as subduction started in the western Pacific, parts of northern Zealandia rose by as much as 1.8 miles (3 kilometers), and other sections dropped in elevation by a similar amount. (Subduction occurs when one tectonic plate collides with another and sinks underneath it.)
"These dramatic changes in northern Zealandia, an area about the size of India, coincided with buckling of rock layers (known as strata) and the formation of underwater volcanoes throughout the western Pacific," study co-authors Rupert Sutherland, a geophysicist at Te Herenga Waka-Victoria University of Wellington, and Gerald Dickens of Rice University in Texas, wrote in The Conversation.
It was, in a nutshell, the birth of the Ring of Fire, the arc of subduction zones that circles the Pacific. The Ring of Fire's tectonic activity is accompanied by relatively frequent earthquakes and regions of volcanic activity.
"One of the amazing things about our observations is that they reveal the early signs of the Ring of Fire were almost simultaneous throughout the western Pacific," Sutherland said in a statement.
According to reports, the explosion occurred at 00:55 local time (06:55 GMT).
Popocatepetl is 5,426 meters (17,802 feet) tall and is the second-highest mountain in Mexico and the fifth-highest in North America.
El Popo, as it is affectionately known locally, is one of Mexico's most active volcanoes.
The volcano which rises to 9,550 feet above sea level, is located at the border between Yogyakarta and Central Java (home to Indonesia's capital Jakarta). It erupted at 5:16 a.m. local time, which lasted for around 150 seconds, according to a statement by Indonesia's National Disaster Management Agency (BNPB).
Volcanic material was reported to have spewed over a 0.62-mile radius, pouring ash rain over various villages around 6.2 miles south of the volcano, according to a statement by Hanik Humaida, the head of the Geological Disaster Technology Research and Development Center (BPPTKG).














Comment: Could it be that as the plume rises higher as well what it's composed of increases the potential for a discharge event between the ground and the atmosphere?
Some clues as to what may be happening may be found in the following extract from Pierre Lescaudron's book Earth Changes and the Human-Cosmic Connection: See also:
- Taal Volcano near Manila, Philippines erupts for first time in 50 years - Onlookers stunned by electric display
- Volcanic thunder recorded for the first time
- Bread-crust bubbles: Scientists discover new type of volcanic ash
And check out SOTT radio's: Behind the Headlines: Earth changes in an electric universe: Is climate change really man-made?