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SeanPaul La Selle

Geologist with the USGS Pacific Coastal and Marine Science Center

Science and Products

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Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust

Current models used to assess earthquake and tsunami hazards are inadequate where creep dominates a subduction megathrust. Here we report geological evidence for large tsunamis, occurring on average every 300–340 years, near the source areas of the 1946 and 1957 Aleutian tsunamis. These areas bookend a postulated seismic gap over 200 km long where modern geodetic measurements indicate...
Authors
Robert C. Witter, G. A. Carver, Richard W. Briggs, Guy R. Gelfenbaum, R.D. Koehler, SeanPaul M. La Selle, Adrian M. Bender, S.E. Engelhart, E. Hemphill-Haley, Troy D. Hill
By
Natural Hazards Mission Area, Earthquake Hazards Program, Groundwater and Streamflow Information Program, Alaska Science Center, Geologic Hazards Science Center, Subduction Zone Science

Science and Products

Filter Total Items: 15
No Result Found
No results found.
Filter Total Items: 25

Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust

Current models used to assess earthquake and tsunami hazards are inadequate where creep dominates a subduction megathrust. Here we report geological evidence for large tsunamis, occurring on average every 300–340 years, near the source areas of the 1946 and 1957 Aleutian tsunamis. These areas bookend a postulated seismic gap over 200 km long where modern geodetic measurements indicate...
Authors
Robert C. Witter, G. A. Carver, Richard W. Briggs, Guy R. Gelfenbaum, R.D. Koehler, SeanPaul M. La Selle, Adrian M. Bender, S.E. Engelhart, E. Hemphill-Haley, Troy D. Hill
By
Natural Hazards Mission Area, Earthquake Hazards Program, Groundwater and Streamflow Information Program, Alaska Science Center, Geologic Hazards Science Center, Subduction Zone Science
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