FORCASTING FUTURE EVENTS Predicting when a volcano will erupt is important for society, but it depends on knowledge of each volcano’s eruption history.
MOUNT RANIER Mount Ranier has generated more than 60 lahars during the past 10,000 years. Many of these occurred during periods of volcanic quiescence.
MOUNT RANIER Today, Mount Ranier continues to vent steam and convert its andesitic summit into clay. A plan to evacuate 50,000 people has been developed.
LANDSLIDE HAZARD: ALASKA THE 1964 PRINCE WILLIAM SOUND EARTHQUAKE TRIGGERED A LARGE VOLUME LANDSLIDE AT TURNAGAIN HEIGHTS. MILLIONS OF CUBIC METERS OF SOIL AND ROCK MOVED DOWN SLOPE. THE 1964 PRINCE WILLIAM SOUND EARTHQUAKE TRIGGERED A LARGE VOLUME LANDSLIDE AT TURNAGAIN HEIGHTS. MILLIONS OF CUBIC METERS OF SOIL AND ROCK MOVED DOWN SLOPE.
LANDSLIDE HAZARD: ALASKA Slope failure was induced by ground shaking of “Quick Clay.”
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