new zealand scientists said tuesday that they had unlocked the
Last Updated : GMT 09:40:38
Themuslimchronicle, themuslimchronicle
Themuslimchronicle, themuslimchronicle
Last Updated : GMT 09:40:38
Themuslimchronicle, themuslimchronicle

New Zealand scientists said Tuesday that they had unlocked the

Themuslimchronicle, themuslimchronicle

Themuslimchronicle, themuslimchronicleNew Zealand scientists said Tuesday that they had unlocked the

The start of a new volcano in New Zealand.
Wellington - XINHUA

New Zealand scientists said Tuesday that they had unlocked the secret to better predicting devastating volcanic eruptions that account for 50 percent of volcanic deaths and endanger half a billion people worldwide.

Massey University researchers claimed to have made the first observations of the internal structure of volcanic flows known as pyroclastic density currents or pyroclastic flows.

The exact cause of pyroclastic flows, which send avalanches of fast-moving clouds of hot ash, rock and gas down the flanks of volcanoes, has long been the subject of speculation.

The ancient Roman city of Pompeii was just one example in a long line of lethal incidents involving these flows, which researcher Dr Gert Lube described as "amongst the most destructive phenomena on Earth."

"Pyroclastic flows are the most common and lethal volcanic threat, and by analyzing the internal structure we are laying the foundations to understand how they will behave in an eruption," Lube said in a statement.

The study sought to create a view inside the flows to define how two currents - the non-turbulent underflow and fully turbulent ash cloud-regions - were able to harmonize and control the severity of the flow itself.

However, measuring the inside of an avalanche of several tonnes of rock, gas and ash had proven impossible because of the heat and destructive force of the flows.

The researchers used Massey's unique eruption simulator to synthesize the natural behavior of the flows in unique large-scale experiments.

The simulator worked by dropping ash and pumice down a narrow channel while high-speed cameras and sensors capture the data.

The results indicated that the currents met in a previously unrecognized turbulent middle zone, meaning there were not two currents, but three.

"Inside this middle zone, the gas-particle mixture behaved fundamentally different from the turbulent suspension cloud above and the particle-rich avalanche of pumice below," said Lube.

The volcanic particles spontaneously associated in a pattern of dendritic or branch-like particle clusters called mesoscale clusters.

"Intriguingly, these mesoscale turbulence clusters control how the internal structure and the damage potential of pyroclastic flows evolve during volcanic event," said Lube.

"This opens a new path towards reliable predictions of their motion, and will be particularly topical for hazard scientists and decision makers, because they will lead to major revisions of volcanic hazard forecasts and ultimately more effective measures for keeping people safe."

Source : XINHUA

themuslimchronicle
themuslimchronicle

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

new zealand scientists said tuesday that they had unlocked the new zealand scientists said tuesday that they had unlocked the

 



Themuslimchronicle, themuslimchronicle
Themuslimchronicle, themuslimchronicle
Themuslimchronicle, themuslimchronicle

GMT 04:05 2016 Saturday ,14 May

EU to provide €55mln for Burundi's people

GMT 08:20 2016 Friday ,22 April

Microsoft profit down 25 percent to $3.8bn

GMT 20:34 2017 Monday ,30 October

Ethiopian 'Red Terror' trial opens in Dutch court

GMT 08:01 2017 Monday ,24 July

A look at major issues Duterte is confronting

GMT 19:41 2017 Wednesday ,23 August

Chad to shutter Qatar embassy, expel diplomats

GMT 01:25 2016 Monday ,26 December

PM congratulates Christians on Christmas
Themuslimchronicle, themuslimchronicle
Themuslimchronicle, themuslimchronicle
 
 Themuslimchronicle Facebook,themuslimchronicle facebook  Themuslimchronicle Twitter,themuslimchronicle twitter Themuslimchronicle Rss,themuslimchronicle rss  Themuslimchronicle Youtube,themuslimchronicle youtube  Themuslimchronicle Youtube,themuslimchronicle youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2023 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2023 ©

muslimchronicle muslimchronicle muslimchronicle muslimchronicle
themuslimchronicle themuslimchronicle themuslimchronicle
themuslimchronicle
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
themuslimchronicle, themuslimchronicle, themuslimchronicle