"Underground Climate Change Is Weakening Buildings in Slow Motion
Hotspots beneath cities deform the ground, causing important
infrastructure to crack under stress"
"The streets, sidewalks and roofs of cities all absorb heat during
the day, making some urban areas up to six degrees Fahrenheit
hotter than rural ones during the day—and 22 degrees F hotter at night. These “urban heat islands†can also develop underground
as the city heat diffuses downward, beneath the surface. And
basements, subway tunnels and other subterranean infrastructure
also constantly bleed heat into the surrounding earth, creating
hotspots. Now that underground heat is building up as the planet
warms.
According to a new study of downtown Chicago, underground hotspots
may threaten the very same structures that emit the heat in the
first place. Such temperature changes make the ground around them
expand and contract enough to cause potential damage. “Without
[anyone] realizing it, the city of Chicago’s downtown was deforming,†says the study’s author Alessandro F. Rotta Loria,
a civil and environmental engineer at Northwestern University.
The findings, published on July 11 in Communications Engineering,
expose a “silent hazard†to civil infrastructure in cities with softer ground—especially those near water—Rotta Loria says. “There might have been structural issues caused by this
underground climate change that happened, and we didn’t even realize,†he adds. While not an immediate or direct danger to
human lives, this previously unknown effect highlights the impacts
of a lesser-known component of climate change."
https://www.scientificamerican.com/article/underground-climate-change-is-weakening-buildings-in-slow-motion1/
Portland has two major rivers that meet here. I wonder if it's
getting ready to fall into them. I'm on the other side of the
hills, so I should be safe from that here.
Technobarbarian wrote:
"Underground Climate Change Is Weakening Buildings in Slow Motion
Hotspots beneath cities deform the ground, causing important
infrastructure to crack under stress"
"The streets, sidewalks and roofs of cities all absorb heat during
the day, making some urban areas up to six degrees Fahrenheit
hotter than rural ones during the day—and 22 degrees F hotter at
night. These “urban heat islands†can also develop underground >> as the city heat diffuses downward, beneath the surface. And
basements, subway tunnels and other subterranean infrastructure
also constantly bleed heat into the surrounding earth, creating
hotspots. Now that underground heat is building up as the planet
warms.
According to a new study of downtown Chicago, underground hotspots
may threaten the very same structures that emit the heat in the
first place. Such temperature changes make the ground around them
expand and contract enough to cause potential damage. “Without
[anyone] realizing it, the city of Chicago’s downtown was
deforming,†says the study’s author Alessandro F. Rotta Loria, >> a civil and environmental engineer at Northwestern University.
The findings, published on July 11 in Communications Engineering,
expose a “silent hazard†to civil infrastructure in cities with >> softer ground—especially those near water—Rotta Loria says.
“There might have been structural issues caused by this
underground climate change that happened, and we didn’t even
realize,†he adds. While not an immediate or direct danger to
human lives, this previously unknown effect highlights the impacts
of a lesser-known component of climate change."
https://www.scientificamerican.com/article/underground-climate-change-is-weakening-buildings-in-slow-motion1/
Portland has two major rivers that meet here. I wonder if it's
getting ready to fall into them. I'm on the other side of the
hills, so I should be safe from that here.
damn. That's literally scary. I'm gonna buy some surplus motel Chinese ice-making machines, and start scattering ice around my yard........as
soon as I figure out the efficacious metrics of the project.
So at the end of the day going forward into the passage of time, what
are you going to do if the hills fall into the rivers?
Technobarbarian wrote:
"Underground Climate Change Is Weakening Buildings in Slow Motion
Hotspots beneath cities deform the ground, causing important infrastructure to crack under stress"
"The streets, sidewalks and roofs of cities all absorb heat during
the day, making some urban areas up to six degrees Fahrenheit
hotter than rural ones during the day—and 22 degrees F hotter at night. These “urban heat islands†can also develop underground
as the city heat diffuses downward, beneath the surface. And
basements, subway tunnels and other subterranean infrastructure
also constantly bleed heat into the surrounding earth, creating
hotspots. Now that underground heat is building up as the planet
warms.
According to a new study of downtown Chicago, underground hotspots
may threaten the very same structures that emit the heat in the
first place. Such temperature changes make the ground around them
expand and contract enough to cause potential damage. “Without [anyone] realizing it, the city of Chicago’s downtown was deforming,†says the study’s author Alessandro F. Rotta Loria,
a civil and environmental engineer at Northwestern University.
The findings, published on July 11 in Communications Engineering,
expose a “silent hazard†to civil infrastructure in cities with softer ground—especially those near water—Rotta Loria says. “There might have been structural issues caused by this
underground climate change that happened, and we didn’t even realize,†he adds. While not an immediate or direct danger to
human lives, this previously unknown effect highlights the impacts
of a lesser-known component of climate change."
https://www.scientificamerican.com/article/underground-climate-change-is-weakening-buildings-in-slow-motion1/
Portland has two major rivers that meet here. I wonder if it'sdamn. That's literally scary. I'm gonna buy some surplus motel Chinese ice-making machines, and start scattering ice around my yard........as
getting ready to fall into them. I'm on the other side of the
hills, so I should be safe from that here.
soon as I figure out the efficacious metrics of the project.
So at the end of the day going forward into the passage of time, what
are you going to do if the hills fall into the rivers?
--
bill
Theory don't mean squat if it don't work.
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