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Alaska earthquake felt at Devils Hole in Death Valley

Alaska earthquake felt at Devils Hole in Death Valley
Posted at 5:45 PM, Jan 24, 2018
and last updated 2018-01-24 20:45:58-05

A powerful earthquake off the coast of Alaska caused water to slosh in Devils Hole in Death Valley National Park.

The magnitude 7.9 earthquake’s epicenter was in the Gulf of Alaska, approximately 170 miles south of Kodiak, Alaska, according to the U.S. Geological Survey. The quake happened in the early morning hours of Jan. 23.

Minutes later, the earthquake’s impact was felt about 2,000 miles away in the Nevada desert.

The phenomenon is technically known as a seismic seiche. They are standing waves in an enclosed body of water (such as a lake or a pool) caused by an earthquake’s seismic waves.

Fortunately, the temblor triggered only an 8-inch tsunami in the Pacific Ocean. The seiche in Devils Hole caused waves over one foot high.

Devils Hole is a water-filled limestone cave in Amargosa Valley, Nevada. It is part of Death Valley National Park. The site is the only natural habitat of the critically endangered Devils Hole pupfish, which numbered only 115 fish in the most recent survey.

The park isn’t too concerned about the quake’s impact on the fish. A primary component of the pupfish’s diet is algae growing on a shallow sunlit shelf at the top of Devils Hole.

Biological Science Technician Ambre Chaudoin observed the fish spawning after the seiche, which she said is their normal reaction to events that disturb the habitat. The fish’s color changed for spawning, with the males gaining a brilliant blue color. Devils Hole pupfish normally only spawn in spring and fall.

A video of a 2012 seiche in Devils Hole can be viewed below.