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Study finds underground climate change’ deforming ground beneath buildings

by admineconai July 19, 2023
written by admineconai July 19, 2023
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A study conducted in Chicago has found that a phenomenon that scientists have called “underground climate change” is deforming the ground beneath cities.

According to the research, the shifting of land under urban areas could pose a problem for buildings and infrastructure, threatening long-term performance and durability.

Underground climate change, which is technically known as “subsurface heat islands, is the warming of the ground under our feet, caused by heat released by buildings and subterranean transportation such as subway systems.

Read also: MPs say less than half of annual tree-planting target in England met

“The denser the city, the more intense is underground climate change,” said lead study author Alessandro Rotta Loria, an assistant professor of civil and environmental engineering at Northwestern University in Evanston, Illinois.

He was also quoted as saying that oil, rocks and construction materials deform when subjected to temperature variations. For example, the ground underneath buildings can contract when heated, causing unwanted settlement.

“Deformations caused by underground climate change are relatively small in magnitude, but they continuously develop,” he said. “Over time, they can become very significant for the operational performance of civil infrastructure like building foundations, water retaining walls, tunnels and so on.”

However, underground climate change is not the same as what we think of as climate change in the atmosphere, which is largely driven by greenhouse gases and has far-reaching effects, said David Archer, a professor of geophysical sciences at the University of Chicago.

“Calling it climate change seems like a bit of a coattail thing,” Archer, who was not involved with the study, said.

The term “underground climate change,” however, was not coined for this study — it has been in use, and the phenomenon a subject of research, for some time.

Story was adapted from CNN.

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