Gone But Not Forgotten
- Jul 18, 2016
Reminds one of the old song..
'There's a sinkhole on a corner of Pittsburgh, Pennsylvania'..
'There's a sinkhole on a corner of Pittsburgh, Pennsylvania'..
A sinkhole's appeared in Cromer .. it's the apocalypse I tell you ..
https://www.msn.com/en-au/news/aust...ing-powerful-storm/ar-BBZ05Dw?ocid=spartandhpResidents in Melbourne's north-west woke today to find a gaping hole had opened up in their neighbourhood following a powerful storm overnight.
Volunteers from the State Emergency Service's Essendon unit were called to section off the four-metre-deep sinkhole, which formed next to a footpath in Keilor East.
A giant hole has been left in a Sunshine Coast road after the weekend's torrential rain caused a landslip.
Police were called to Tingira Crescent at Sunrise Beach on Sunday morning after one lane of the road collapsed down an embankment.
Authorities have since discovered a blocked stormwater pipe backed up when it could not cope with the volume of water. It overflowed down the embankment and caused a landslip.
A big storm bringing lots of rain opens up a sinkhole in Melbourne, Australia.
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Huge sinkhole opens up in Melbourne following powerful storm
That is more of a landslide or slope failure than a sinkhole. The mechanism is different.Another one, this time in Queensland after a weekend of torrential rain.
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Giant hole opens up on Sunshine Coast after wet weekend
FULL STORY: https://www.livescience.com/arctic-permafrost-rapid-thaw.htmlArctic sinkholes open in a flash after permafrost melt
Some permafrost zones thaw faster than expected and are reshaping the Arctic landscape.
... Arctic permafrost can thaw so quickly that it triggers landslides, drowns forests and opens gaping sinkholes. This rapid melt, described in a new study, can dramatically reshape the Arctic landscape in just a few months.
Fast-melting permafrost is also more widespread than once thought. About 20% of the Arctic's permafrost — a blend of frozen sand, soil and rocks — also has a high volume of ground ice, making it vulnerable to rapid thawing. When the ice that binds the rocky material melts away, it leaves behind a marshy, eroded land surface known as thermokarst.
Previous climate models overlooked this kind of surface in estimating Arctic permafrost loss, researchers reported. That oversight likely skewed predictions of how much sequestered carbon could be released by melting permafrost, and new estimates suggest that permafrost could pump twice as much carbon into the atmosphere as scientists formerly estimated, the study found. ...
Frozen water takes up more space than liquid water, so when ice-rich permafrost thaws rapidly — "due to climate change or wildfire or other disturbance" — it transforms a formerly frozen Arctic ecosystem into a flooded, "soupy mess," prone to floods and soil collapse, said lead study author Merritt Turetsky, director of the Institute of Arctic and Alpine Research (INSTAAR) at the University of Colorado Boulder.
"This can happen very quickly, causing relatively dry and solid ecosystems (such as forests) to turn into lakes in the matter of months to years," and the effects can extend into the soil to a depth of several meters, Turetsky told Live Science in an email. ...
Gordon Humphrey, who lives next to the sinkhole, said his wife heard a "bang" and then they saw the car.
"You could hear the water bubbling, see the tail lights and there was a smell of gas," the 60-year-old said.
Can you image just parking your vehicle and upon finishing come out to see this? Wonder if the fellows insurance covers any of this. Either way bummer.
12 Blackhawk families displaced after sinkhole exposes abandoned gypsum mine
Albert Reitz was mowing his lawn after work on Monday when he felt it.
“I felt suction behind me and a little bit of movement under my feet. I looked behind me and I was only a foot away from” a sinkhole, he said Friday as movers were packing his home in Blackhawk.
“I didn’t even hear it go down, it just went down,” said the 56-year-old. I was “scared as hell.”
The sinkhole collapse at 5:30 p.m. that day broke water and sewer lines that further ate away at the earth, widening the hole in the Hideaway Hills subdivision to 40 by 50 feet.
“It was going into a bottomless pit,” said 40-year-old John Trudo, who realized something was wrong when his sink faucet didn't work and then heard Reitz banging on his door.
Trudo’s wife, Erika, called 911 and first responders evacuated six families that evening after a second, smaller sinkhole was discovered across the street.
The evacuations continued when cavers explored the sinkhole Wednesday and Thursday and found it opened into an abandoned gypsum mine that’s at least 600 feet long and filled with holes from drilling and mining equipment.
“I really never imagined that when we went back down there it would be that big,” said Adam Weaver, a member of Paha Sapa Grotto, a local caving group. ...
... (T)he gypsum mine was owned by the Dakota Plaster Company.
The Journal and other local papers reported as early as 1910 on the opening of the Dakota Plaster Plant in Blackhawk, archives show. And mindat.org, a nonprofit mining information organization, places the old mine on East Daisy Drive exactly where the sinkhole is.
It’s unclear when the mine closed.
Weaver, who explored the cave for four hours Thursday, said the mine ranges from just 25 to 30 feet below ground.
That’s “part of the problem,” he said.
The sinkholes are developing because ground and surface water has been eating away at the gypsum, which is “incredibly water soluble,” said Weaver, a GIS analyst for Rapid City and former hydrologist for the U.S. Forest Service.
“Building on top of gypsum is a bad idea,” especially when it’s already hollowed out from a mine, he said. ...
A huge sinkhole opens up on an intersection in Guatemala City, caused by a landslide due to tropical storm Agatha, on May 31, 2010.
That's some fairly precise storm damage. Any reports on a likely cause as opposed to this wacky non-correlation the Mess/Press have created?
It's actually more aptly called a "piping feature" as it is not a true sinkhole in the geologic sense. It was entirely man-made. The only reason it occurred here was not because it was a pre-existing rock void that collapsed (a true sinkhole) but washing way of the material that was loose to begin with. https://www.nationalgeographic.com/news/2010/6/100603-science-guatemala-sinkhole-2010-humans-caused/I saw that pic a long time ago and it has always stuck with me, it looks like someone has built a big pipe, it looks so manmade
Here's an interesting explanation.
Not a sinkhole.
Not a sinkhole.
Instead, Bonis prefers the term "piping feature" -- a decidedly less sexy label for the 100-foot deep, 66-foot side circular chasm. But it's an important distinction, he maintains, because "sinkholes" refer to areas where bedrock is solid but has been eaten away by groundwater, forming a geological Swiss cheese whose contours are nearly impossible to predict.
The situation beneath the country's capital is far different, and more dangerous. The lion's share of the city is built on pumice fill -- ash flows made up of loose, gravel-like particles deposited during ancient volcanic eruptions. In places, the debris is piled over 600 feet thick, filling up what would otherwise be a v-shaped valley of faulted bedrock.
http://news.discovery.com/earth/dont-ca ... khole.html
Here's a good cross-section picture of the type of layering - not the current hole, I think
Oh noes! The whole city is going down the sinkhole...
Damn you, Teresa May!Turkey's major agricultural area is plagued by sinkholes due to drought and improper irrigation.
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Give it time, it'll soon reach Cromer...