USGS revamps seismic risk map to include quakes caused by humans

Reuters News
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Posted: Mar 28, 2016 1:31 PM

HOUSTON (Reuters) - Earthquakes caused by human activity will now be included in the U.S. Geological Survey's seismic risk maps, the agency said on Monday after a sharp rise in temblors linked to wastewater disposal wells used by the oil and gas industry in Oklahoma.

The move is significant because the seismic risk maps are used by the country's major engineering and design associations to guide how strong to make buildings and other structures in quake zones.

(Reporting by Liz Hampton in Houston, Valerie Volcovici Washington and Jessica Resnick-Ault in New York)