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Discussing current issues in engineering

Cascading Natural Disasters on the Rise

5/1/2019

 
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With rising global temperatures, natural disasters have become more frequent and intense in recent years—costing over $1.5 trillion and resulting in nearly 10,000 casualties since 1980.

But what’s also becoming more prevalent are “cascading natural disasters”—when one hazardous event impacts or creates another, creating a domino effect of destruction.

For example, after a wildfire or deforestation, topsoil becomes destabilized, leaving the earth incapable of absorbing rainfall. This then leads to flooding and landslides, such as the 20-foot high mudslide that hit Montecito, California homes at 20 miles per hour in January 2018.

Or consider hurricanes and their resulting storm surges. Flooding from these events typically impacts low-income households the most—as it did during Hurricane Katrina—since the most affordable homes tend to be located in the floodplains. This leads to a humanitarian disaster.

Although it’s impossible to predict the next hazardous event, civil engineers work to build solutions to reduce their impact and prevent the cascading effect. This means designing with the big picture in mind—rather than solving just the issue at hand.

To learn more about cascading natural disasters, check out this insightful article from Nature, International Journal of Science. 

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