Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, U.S. Geological Survey. |
The village of Portage, at the head of Turnagain Arm of Cook Inlet, is flooded at high tide as a result of 6 feet (1.8 m) of tectonic subsidence during the earthquake. After the quake, the shoreline was as much as 2 miles (3.4 km) inland from the pre-earthquake mean shore line. The town of Portage was inundated and covered with a blanket of silt. Much of the highway to Anchorage was covered by water. Image Credit: U.S. Geological Survey March 28, 1964 Prince William Sound USA earthquake and tsunami The earthquake was one of the largest earthquakes ever recorded on the North American Continent. It was a magnitude 8.4 earthquake, felt over 500,000 square miles. This great earthquake and ensuing tsunami took 125 lives (tsunami 110, earthquake 15). Event Data:
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