SIGforum.com    Main Page  Hop To Forum Categories  The Lounge    Volcanic eruption in New Zealand killing tourists
Page 1 2 
Go
New
Find
Notify
Tools
Reply
  
Volcanic eruption in New Zealand killing tourists Login/Join 
Knowing is Half the Battle
Picture of Scuba Steve Sig
posted Hide Post
I've hiked across Kilauea Iki twice, in 2008 and this summer. It was filled with lava 60 years ago and there are parts venting gas that is too hot to touch still. Its right next to the more active Kilauea caldera, but despite Kilauea being active, its (historically) not explosive like this was. I doubt those people thought it was explosive either though. I just hope (and imagine it was) fast for them and they felt no pain.
 
Posts: 2516 | Location: Iowa by way of Missouri | Registered: July 18, 2002Reply With QuoteReport This Post
half-genius,
half-wit
posted Hide Post
Also on the BBC news is a report than seismologists were warning the tour operators to this privately-owned island of increased seismic activity over the last few days - perhaps the NZ premier's aim of carrying out a criminal investigation might not be so crazy after all.

This message has been edited. Last edited by: tacfoley,
 
Posts: 11322 | Location: UK, OR, ONT | Registered: July 10, 2003Reply With QuoteReport This Post
thin skin can't win
Picture of Georgeair
posted Hide Post
What could possibly have gone wrong with this plan??!!??






You only have integrity once. - imprezaguy02

 
Posts: 12417 | Location: Madison, MS | Registered: December 10, 2007Reply With QuoteReport This Post
Tinker Sailor Soldier Pie
Picture of Balzé Halzé
posted Hide Post
Literally walking into an active volcano...

Brilliant.


~Alan

Acta Non Verba
NRA Life Member (Patron)
God, Family, Guns, Country

Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan

"Once there was only dark. If you ask me, light is winning." ~Rust Cohle
 
Posts: 30408 | Location: Elv. 7,000 feet, Utah | Registered: October 29, 2012Reply With QuoteReport This Post
Waiting for Hachiko
Picture of Sunset_Va
posted Hide Post
More on the way..
From: https://www.scientificamerican...as-the-planet-warms/

Tens of thousands of people have evacuated their land in Bali as the nearby volcano Mount Agung angrily spits ash and its magma rises. Many Balinese hold the mountain sacred and accept its occasional outbursts as moral admonishments whereas geologists consider this activity a routine part of Earth’s behavior. But scientists have found another force—climate change—affects the frequency of eruptions. Now a new study shows even relatively minor climate variations may have such an influence. If they are right, today’s global warming could mean more and bigger volcanic eruptions in the future.
Throughout its history Earth has gone through periods of massive natural climate change such as entering and leaving ice ages. Scientists have noted volcanic eruptions tended to increase as glaciers melted. In a recent study published in Geology researchers looked at smaller-scale changes in glacial coverage to see if these incremental differences had any effect.
The scientists focused on eruptions in Iceland about 5,500 to 4,500 years ago. During that period Earth’s climate cooled and glaciers grew, but there was no full-blown ice age. To reconstruct a timeline of volcanic activity, the researchers examined the Icelandic eruption record as well as a record of the ash that fell in Europe during those Icelandic eruptions, which ultimately settled into microscopic layers in the continent’s peat bogs and lakes, study author Graeme Swindles says. He and his colleagues matched these layers to specific Icelandic volcanoes then developed a detailed timeline of increases and decreases in eruptions.
ADVERTISEMENT
When the scientists compared the volcanic record with glacial coverage, they found the number of eruptions indeed dropped significantly as the climate cooled and ice expanded. “There’s a big change in the record in the mid-Holocene [epoch], where we see no volcanic ash in Europe and very little in Iceland,” says Swindles, an associate professor of Earth system dynamics at the University of Leeds. “This seems to overlap with a time where there’s cold climate conditions, which would have favored glacial advance in Iceland.” He says his team observed an approximately 600-year lag between when glaciers advanced and volcanic activity diminished. “That’s because it takes a long time to grow ice masses,” he explains.
The new study is “looking at maybe the smallest-magnitude climate change yet to show it has influence on volcanic activity,” says Ben Edwards, an associate professor of geology at Dickinson College. “To see this change in an interglacial period indicates that there’s an even more subtle relationship between climate change and volcanism” than scientists previously thought. Julie Schindlbeck, a volcanologist at Heidelberg University in Germany, says the work shows “maybe even small changes in ice volume can really affect volcanism.”
Although scientists do not fully understand why glaciers appear to weaken volcanic eruptions, they believe the mechanics may be fairly straightforward. When glaciers expand, all that ice puts immense pressure on Earth’s surface. “It can affect magma flow and the voids and gaps in the Earth where magma flows to the surface as well as how much magma the crust can actually hold,” Swindles says. When glaciers retreat, the pressure lifts and volcanic activity surges. “After glaciers are removed the surface pressure decreases, and the magmas more easily propagate to the surface and thus erupt,” Swindles wrote in an e-mail to Scientific American.
This is exactly what he and his team found when they looked at what happened as Earth warmed up again and glaciers melted—they counted more eruptions. Again they saw a time lag, this time between ice melt and the rise in eruptions. But this gap was shorter. “It takes relatively less time to melt ice if the temperature goes up,” compared with growing ice when it gets colder, Swindles says. “So if you’re looking at a period of [warming and subsequent] volcanic flare-up, the lag might be a lot shorter.” He also notes that when volcanic eruptions occur during cooler, ice-covered times, they appear to be smaller in magnitude. As the climate warms, eruptions seem to get bigger.
Edwards notes Iceland’s unique geology makes it a very volcanically active compared with many other places, however—and also perhaps more vulnerable to the ice effect than other regions. “It’s probably a place that’s extra-sensitive to [glaciers growing and melting],” he says.

ADVERTISEMENT
Whether this phenomenon will occur with modern-day climate change is not yet known. But Swindles says the glacier coverage changes his team studied are similar in magnitude to what Earth will likely experience due to human-influenced warming. “I think we can predict we’re probably going to see a lot more volcanic activity in areas of the world where glaciers and volcanoes interact,” he says, listing the U.S. Pacific Northwest, southern South America and even Antarctica. That, he says, is cause for grave concern—for businesses such as airlines as well as for general human and environmental health. “Volcanic ash and emissions can be deadly,” he says. “If not at least very damaging.”
Rights & Permissions"


美しい犬
 
Posts: 6673 | Location: Near the Metropolis of Tightsqueeze, Va | Registered: February 18, 2007Reply With QuoteReport This Post
Tinker Sailor Soldier Pie
Picture of Balzé Halzé
posted Hide Post
So Climate Change caused this volcano to erupt and kill these people. Oh for chrissakes Roll Eyes


~Alan

Acta Non Verba
NRA Life Member (Patron)
God, Family, Guns, Country

Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan

"Once there was only dark. If you ask me, light is winning." ~Rust Cohle
 
Posts: 30408 | Location: Elv. 7,000 feet, Utah | Registered: October 29, 2012Reply With QuoteReport This Post
Wait, what?
Picture of gearhounds
posted Hide Post
^^^^
These globalists are desperate to push their agenda. Comparing volcanic activity in Iceland to New Zealand? Not only are the geologic forces that drive the volcanism between the two regions completely different (Iceland’s volcanoes are a result of the spreading of the mid-Atlantic rift, while New Zealand’s are driven by subduction), but when is the last time glaciers, or even snow existed on White Island?

It’s not only like comparing apples to oranges, it’s like comparing them in summer and winter at the same time.




“Remember to get vaccinated or a vaccinated person might get sick from a virus they got vaccinated against because you’re not vaccinated.” - author unknown
 
Posts: 15576 | Location: Martinsburg WV | Registered: April 02, 2011Reply With QuoteReport This Post
Member
Picture of Rick Lee
posted Hide Post
Ironically, volcanoes are what's most likely to reverse any global warming. When the one under Yellowstone blows, global warming will be a thing of the past for the next few hundred years, even if there's anyone left to write about it.
 
Posts: 3535 | Location: Cave Creek, AZ | Registered: October 24, 2005Reply With QuoteReport This Post
Member
Picture of Blume9mm
posted Hide Post
Yep, last time Yellowstone went off it left a hole in the ground the size of Road Island... dropped dirt in the Gulf of Mexico...

Years ago I was looking down in the volcano on the Big Island of Hawaii and read a information sign that said a few years before the floor had decided to rise up 800ft..


My Native American Name:
"Runs with Scissors"
 
Posts: 4441 | Location: Greenville, SC | Registered: January 30, 2017Reply With QuoteReport This Post
  Powered by Social Strata Page 1 2  
 

SIGforum.com    Main Page  Hop To Forum Categories  The Lounge    Volcanic eruption in New Zealand killing tourists

© SIGforum 2024