Geotechnical and Surface Wave Investigation of the Great M 7.9
Denali Fault Earthquake of 3 November 2002

Figure 4

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Photo of sand vents formed on top of (and here, in between) the sliding polygon crust. Sand vents indicate elevated pore water pressures during the earthquake.

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Geotechnical and Surface Wave Investigation of the Great M 7.9 Denali Fault Earthquake of 3 November 2002

Figure 4

Geotechnical and Surface Wave Investigation of the Great M 7.9
Denali Fault Earthquake of 3 November 2002