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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 Government Hill Elementary school in Anchorage was torn apart by subsidence of the graben at the head of the Government Hill landslide. The south wing of the school dropped about 30 feet (9 m); the east wind split lengthwise and collapsed. The playground became a chaotic mass of blocks and fissures. Part of this slide became an earthflow that spread 150 feet (45.5 m) across the flats into the Alaska Railroad yards. During the earthquake, the shaking loosened clay beneath Government Hill and the clay began to move toward the flats. On the hill, 400 feet (121.2 m) back from the rim of the bluff, the earth cracked on a front 1,180 feet (357.6 m) wide. 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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