Scientists Warn That Massive Flooding and Tsunamis Could Hit 3 Major Regions in the U.S.

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Scientists Warn That Massive Flooding and Tsunamis Could Hit 3 Major Regions in the U.S.

A new study from researchers at Virginia Tech warns that parts of Northern California, Oregon and Washington are at risk of serious flooding — and even tsunamis

The study’s authors explain that an earthquake in the Cascadia subduction zone, along with rising sea levels, puts a greater area of land at tsunami and flood risk than previously thought

The scientists hope their findings will encourage communities in the region to prepare for the potential effects of large-scale flooding

Parts of the Pacific Northwest in the United States are at an increased risk of massive flooding — and potentially even landslides

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— in the coming years, according to new research.

A study conducted by Virginia Tech researchers published in the

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says that an earthquake in the Cascadia subduction zone (CSZ) — which stretches from northern California to Vancouver Island, British Columbia — combined with rising sea levels could cause coastal land in Northern California, Oregon and Washington to sink up to 6.5 ft.

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This would increase the amount of land

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in the region from 35 square miles to 116 square miles and would impact thousands of people and properties, per the study.

The researchers additionally stressed that earthquake-driven land sinkage and climate-driven sea-level rise “need to be considered in tsunami inundation maps.”

They say that current

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of the region — which show areas that would potentially be affected by an earthquake-caused tsunami — do not take rising sea levels into account, nor the “amplification effect it will have on future tsunamis.”

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After effects of a tsunami in India in 2004

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The Virginia Tech researchers came to their conclusions by generating tens of thousands of earthquake models to estimate the potential range of damage that can be expected from the next large Cascadia earthquake, per an article on the university’s

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Because the timing of the

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cannot be known, the researchers created two versions of their models — one in which an earthquake in the CSZ struck today and another in which it struck 75 years from now in 2100, when “climate-driven sea-level rise will further amplify the impacts” of an earthquake.

The researchers estimate that if an earthquake were to happen today, an additional 14,350 residents, 22,500 structures and 777 miles of roadway would fall within the post-earthquake floodplain — which is more than double that of previous models, per Virginia Tech.

The study’s authors ultimately hope that these findings will motivate communities in the Pacific Northwest to prepare for these potential outcomes, especially because it has been estimated that there is a 15% chance that a

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or greater will occur in the CSZ within the next 50 years.

“Preparing for these compound hazards can minimize long-term damage, ensure resilient communities and protect critical coastal ecosystems from permanent degradation,” the researchers said in their study.

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