APR 20, 2021 8:23 AM PDT

To predict wildfires, look to the hills

A study published recently in the Journal of Geophysical Research: Earth Surface reports on a new technique that can be used to improve wildfire predictions. The technique looks at rock weathering and water storage in hills as clues for understanding risks of wildfires as well as landslides.

Led by Michelle Pedrazas of The University of Texas at Austin, the study is the first to analyze weathering patterns in hills and valleys at a deeper level – literally. Most computer models focus on soil level analyses, but this one also looked at the near-surface layer that includes trees, soils, weathered rock, and fractures, a layer called the "critical zone”.

"This study helps to unravel a mystery in the critical zone research community, the linkage between bedrock weathering, topography, and storage of water in mountainous watersheds," said Eric Pierce, the director of the Environmental Sciences Division at Oak Ridge National Laboratory.

"There's a lot of momentum to do this work right now," adds study co-author Daniella Rempe, an assistant professor at the UT Jackson School of Geosciences Department of Geological Sciences. "This kind of data, across large scales, is what is needed to inform next-generation models of land-surface processes."

The team’s analysis found deeper weathering and fracturing in hilltops and thinner weathering in valleys. They also saw weathering at deeper depths shorter hill slopes compared to taller ones. “Our findings provide evidence for feedbacks between erosion and weathering in mountainous landscapes that result in systematic subsurface structuring and water routing,” the authors write.

These findings are part of the puzzle of understanding the relationships between rock weathering and rock moisture, information that can be used to predict the impacts of droughts and subsequent wildfires.

"We were really seeing the potential impact of our research, [the importance of] where is the water, and when are trees really going to dry up, and what risk that is for society," Pedrazas concludes.

Sources: Journal of Geophysical Research, Science Daily

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
JAN 29, 2021
Earth & The Environment
The surprising sex lives of lichen
JAN 29, 2021
The surprising sex lives of lichen
Just like eavesdropping neighbors, scientists from Quebec's Université-Laval are peeping in on the shocking s ...
FEB 02, 2021
Earth & The Environment
The dirty link between abandoned coal mines and methane emissions
FEB 02, 2021
The dirty link between abandoned coal mines and methane emissions
According to new research presented at the annual meeting of the American Geophysical Union recently, coal mines release ...
FEB 16, 2021
Earth & The Environment
Microbes help measure carbon in the ocean
FEB 16, 2021
Microbes help measure carbon in the ocean
It comes as no surprise that scientists are interested in decoding the enigma of carbon cycling in the oceans- after all ...
FEB 24, 2021
Cell & Molecular Biology
Ancient Fungi Found in Europe's Largest Impact Crater
FEB 24, 2021
Ancient Fungi Found in Europe's Largest Impact Crater
Long ago, fungi colonized the impact crater of an ancient meteor. It seems they may have begun working in partnership wi ...
MAR 08, 2021
Earth & The Environment
Considering the water costs of biofuel production
MAR 08, 2021
Considering the water costs of biofuel production
As the world turns more toward the direction of sustainable energy investment, biofuel stands out as an alternative to f ...
MAY 01, 2021
Space & Astronomy
Satellite Images Show Accelerating Retreat of World's Glaciers
MAY 01, 2021
Satellite Images Show Accelerating Retreat of World's Glaciers
In a new study, an international team of researchers have found that almost all of the world’s glaciers are in ret ...
Loading Comments...