Transcript 1958 Alaska earthquake

1958 Lituya Bay, Alaska Earthquake
• Magnitude 7.9
• Rupture Length 90 to 280 km
• Surface Displacement 3.5 to 6.5 m
Photographs by Lloyd Cluff and George Plafker
Fairweather fault
1958 Lituya Bay Earthquake, M 7.9
Rupture length 95 to 280 km
Fairweather fault
6.2 m RL
Lituya Bay
Line of
disrupted
trees along
fault rupture
SS-RL 4 to 6 m
Disrupted tree zone
3 to 5 m wide
Lituya Bay Earthquake, Fairweather Fault (6.2 m)
Surface fault rupture through trees
Disrupted tree zone
3 to 5 m wide
Glacial Ice Faulted by RL-Slip Along
Fairweather Fault - 4.8 m
Surface rupture zone varies, 1 to 50 m wide