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Researchers map fast-moving fault off Alaska

Data will help coastal communities prepare for hazards associated with earthquakes, tsunamis

Posted August 16, 2018

Researchers from the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS) have completed a high-resolution, comprehensive map of one of the fastest moving underwater tectonic faults in the world, located in southeastern Alaska. The information will help coastal communities better understand and prepare for the risks from earthquakes and tsunamis that can occur when faults suddenly move.

Fault line activity poses a hazard to communities throughout southeastern Alaska, as well as more than a million annual tourists and the seafloor infrastructure critical for Alaska’s communications and offshore energy industries.

The research is part of a larger two-year effort between the NOAA Integrated Coastal and Ocean Mapping Program and USGS to map large portions of the Cascadia continental margin in federal waters offshore of Alaska, California, Oregon, and Washington.

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