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Fri, 24 Sep 2021
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Attention

Exclusion zone & aviation ALERT triggered as Indonesia's most active volcano violently erupts

Volcano eruption
© Twitter / Maryadie @ZuziloMaryadie
Indonesia's most active volcano, Mount Merapi, erupted without warning early on Tuesday for the second time in a month, sending column of ash 6km (20,000ft) into the sky and blanketing nearby communities with ash and dust.

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'.

Attention

Russia's highest volcano, Klyuchevskoy erupts sends ash 20,000 feet into the air

Klyuchevskoy

Klyuchevskoy
Russia's highest volcano, Klyuchevskoy, has erupted, sending ash and steam in a volcanic cloud up to 20,000 feet into the air.

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.


Cloud Lightning

Volcanic lightning and what we can learn from the 2018 Anak Krakatau eruption

Anak Krakatau
© Reuters
A phreatomagmatic eruption occurs when water comes into direct contact with magma
The 2018 eruption of Anak Krakatau in Indonesia was remarkable in many ways.

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.

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:
Lightning and hurricanes seem to be similar charge rebalancing processes. Lightning mostly occurs above continents and is far less frequent above oceans.1 This may be due to the difference between ground conductivity and sea conductivity. When electrons start flowing upwards from the ocean, the high conductivity of salt water2 usually prevents the formation of electron-deficient regions, which is one of the causes of lightning. However, when the upward electron flow occurs above a continent, the poor conductivity of the ground3 enables the formation of electron-deficient pockets that will trigger and receive lightning discharges.

In terms of location, hurricanes are the opposite of lightning bolts: they mostly occur above oceans and usually weaken or die when they reach land. When a massive flow of electrons is pulled up above the ocean, the high conductivity of salt water can provide and conduct free electrons from all adjacent regions, thus offering an almost endless supply of electrons to power the ongoing hurricane. When the hurricane reaches the ground, the electron supply is limited by the poor conductivity of the ground and the hurricane weakens.

[...]

Notice also that the rainfall that usually accompanies hurricanes also participates in the charge re-balancing process.

When a water drop falls to the ground, it can capture electrons from the bottom of the cloud or below it, thus carrying a negative charge to the ground and rebalancing electric potential differences in a manner similar to lightning. From this perspective, lightning and rain are both caused by a strong atmospheric E-field and both lead to a charge rebalancing between the Earth's surface and its atmosphere.

Notice that the atmospheric field has an influence on raindrops formation and size. In the image below,4 a thin water jet was created by a hypodermic needle connected to a water faucet. On the left, no electric field was applied. The jet took the form of a mist made of small droplets. On the right, an electric field was applied to the water jet, triggering the binding of droplets with each other and the subsequent formation of large water drops. This experiment is very similar to what occurs in clouds, where water droplets tend to align along the atmospheric E-field and attract each other, forming heavier and heavier water drops.

water electric
© Pierce Bounds
Influence of electric field on the size of water drops.
From the above we can see that lightning and hurricanes are very similar electric phenomena. Hurricanes are to sea surface what lightning bolts are to ground surface. They are both caused by upward electron flows and they both rebalance electric charges by returning electrons to the ground: rainfall in the case of hurricanes, lightning in the case of electrical storms.

Before closing this chapter, a few further comments about atmospheric dust are necessary: as we've seen previously, atmospheric dust plays a major role in storm dynamics. On a physical level it acts as a nucleus for the formation of condensed water droplets (clouds). On an electrical level it holds electric charges that can trigger lightning.

Atmospheric dust also seems able to modulate cloud elevation. According to mainstream science, atmospheric dust and water droplets stay in suspension in the atmosphere because of their very small size, exhibiting low weight and comparatively large drag.5 However, some observations don't fit the gravity-drag model and, in some cases, dust clouds settle much slower than predicted:
Interestingly, it appears that some hitherto unknown atmospheric process counteracts gravitational settling of larger atmospheric dust particles (Maring et al., 2003), as models of long-range dust transport often underestimate the larger particle fraction (Colarco et al., 2003, Ginoux et al., 2001), and dust samples collected after fallout events show that large numbers of 'giant' dust particles (larger than 62.5 micrometers) can be carried thousands of kilometers from their source (Middleton et al., 2001).67
If you remember the Millikan experiment8, a droplet charged with only one electron can counteract gravity and literally levitate when exposed to a vertical electric field. For this to happen, the vertical electric field has to be 32,100 v/m.9 Although the atmospheric electric field is normally about 100 v/m at ground level,10 atmospheric dust or atmospheric droplets, because they reduce conductivity, can drastically increase this value. Electric fields of 2,000 v/m have been measured under dust storms,11 up to 20,000 v/m has been observed under thunderstorms12 and up to 200,000 v/m within thunderstorms.13 In addition, unlike the Millikan experiment, some particles can carry more than one electron charge.

This means that the atmospheric electric field can play a role in the fall speed, location, movement and elevation of clouds whether they are made of dust or droplets (or both). It can cause the particles to 'levitate' or literally rise up in the air.
See also: And check out SOTT radio's: Behind the Headlines: Earth changes in an electric universe: Is climate change really man-made?


Info

Humans survived largest known volcanic eruption

Excavations at Dhaba in northern India
© CHRISTINA NUEDORF
Archaeological excavations at Dhaba in northern India.
Humans survived one of the largest known volcanic events - the Mount Toba super-eruption in Sumatra, Indonesia, 74,000 years ago - new research shows.

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.

Attention

Popocatepetl volcano eruption sends ash shooting a mile into sky

Popocatépetl
Mexico's Popocatépetl volcano erupted on February 23, sending ash spiralling into the sky above the nearby town of Tlamacas.

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.


Biohazard

Deadly gases detected at Eldvörp caves in Iceland, tourists warned to stay away

eldvorp
© Ellert Grétarsson
Screenshot.
The Icelandic Met Office has issued a warning advising people to stay away from the Eldvörp caves of Reykjanes, on account of high levels of deadly gases which have accumulated therein.

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


Attention

Ecuador's 'Throat of fire' volcano signalling devastating 'potential collapse', scientists fear

Tungurahua erupting on November 2nd, 1999
© US Geological Survey
Tungurahua erupting on November 2nd, 1999.
Scientists are warning that the Tungurahua volcano in Ecuador is showing early signs of impending catastrophic collapse, after satellite data showed substantial internal damage from ongoing magma activity.

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.

Map

The lost continent of Zealandia hides clues to the Ring of Fire's birth

A topographic map of Zealandia, a sunken continent that includes New Zealand.
© NOAA
A topographic map of Zealandia, a sunken continent that includes New Zealand.
The hidden undersea continent of Zealandia underwent an upheaval at the time of the birth of the Pacific Ring of Fire.

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.

Comment: What are lost continents and why are we discovering so many?


Attention

Mexico's mighty Popocatepetl volcano erupts in nighttime explosion

Popocatepetl volcano erupts

Popocatepetl volcano erupts
Mexico's mighty Popocatepetl volcano erupted Thursday, with a dramatic show of lava flying from its crater and an ash column rising some 1,500 meters (4,921 feet) into the night sky.

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.


Camera

Indonesia's Mount Merapi volcano erupts, spewing ash 6,500 feet high

Mount Merapi

Mount Merapi
Mount Merapi, Indonesia's most active volcano, erupted early Thursday morning, spewing an ash column around 6,500 feet in the air. Disaster management authorities are warning tourists and locals to stay outside a nearly two-mile radius from the peak of the volcano.

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).