Today’s Earthquake Fact
Liquefaction, which happens when loosely packed, water-logged sediments lose their strength in response to strong shaking, causes major damage during earthquakes. During the 1989 Loma Prieta earthquake, liquefaction of the soils and debris used to fill in a lagoon caused major subsidence, facturing, and horizontal sliding of the ground surface in the Marina district in San Francisco.
Today in Earthquake History
February 28, 2001
M 6.8, Washington – About 400 people injured and major damage in the Seattle-Tacoma-Olympia area. Maximum intensity (VIII) in the Capitol Hill area of Olympia and in… Read More