gotsnowgotslush
skates like Eck
- Joined
- Dec 24, 2007
- Posts
- 25,720
MARCH 2, 2017
Some call it a doorway to hell. Or a portal to the underworld. Scientists call it a crater. But everyone agrees that it's getting bigger.
The Batagiaka crater in eastern Siberia, already the largest of its kind, has been growing wider.
Siberia's crater is caused by melting permafrost, perennially frozen soil that remains in that state for at least two consecutive years. The resulting irregular terrain of mounds and hollows is called thermokarst.
Satellite imagery indicates that the crater expands, on average, by 33 feet per year
Melting began in the 1960s, spurred by rapid deforestation due to development As trees that shaded the frozen soil were removed, the sun began warming the soil, causing the ice to melt. The formation of the hole has accelerated further in recent years as the planet has warmed steadily, spurred by rising greenhouse gases.
Eroding and melting soil cause a phenomena that is often known as "drunken trees," in which trees cannot grow straight, further reducing the amount of shade covering the ground. This process is happening across parts of the entire north, from Alaska to Eurasia.
As layers of deep sediment rapidly melt, it can cause the top layer of soil to slump downward, causing massive craters that damage pipelines, crack pavement, and even swallow houses whole.
https://news.nationalgeographic.com/2017/03/siberia-batagiaka-crater-climate-change/#close
.
Some call it a doorway to hell. Or a portal to the underworld. Scientists call it a crater. But everyone agrees that it's getting bigger.
The Batagiaka crater in eastern Siberia, already the largest of its kind, has been growing wider.
Siberia's crater is caused by melting permafrost, perennially frozen soil that remains in that state for at least two consecutive years. The resulting irregular terrain of mounds and hollows is called thermokarst.
Satellite imagery indicates that the crater expands, on average, by 33 feet per year
Melting began in the 1960s, spurred by rapid deforestation due to development As trees that shaded the frozen soil were removed, the sun began warming the soil, causing the ice to melt. The formation of the hole has accelerated further in recent years as the planet has warmed steadily, spurred by rising greenhouse gases.
Eroding and melting soil cause a phenomena that is often known as "drunken trees," in which trees cannot grow straight, further reducing the amount of shade covering the ground. This process is happening across parts of the entire north, from Alaska to Eurasia.
As layers of deep sediment rapidly melt, it can cause the top layer of soil to slump downward, causing massive craters that damage pipelines, crack pavement, and even swallow houses whole.
https://news.nationalgeographic.com/2017/03/siberia-batagiaka-crater-climate-change/#close
.