Environmental Sciences
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Robert C Witter

Research Geologist
Alaska Science Center
The U.S. Geological Survey
United States Virgin Islands

Biography

Ph.D.       1999           University of Oregon, Eugene, Oregon            Geological Sciences B.A.         1991           Whitman College, Walla Walla, Washington      Biology Areas of Specialization and/or Research Interests Megathrust paleoseismology: understanding the Holocene history of great (M >8) earthquakes at the Alaska-Aleutian and Cascadia subduction zones. Active faulting in the Pacific Northwest: characterizing the recurrence interval, slip rate and style of deformation for shallow crustal faults in Alaska, Washington, Oregon and northern California. Paleogeodesy: reconstructing tectonic displacements for megathrust earthquakes over multiple seismic cycles using relative sea-level indicators. Tsunami geology: examining the sedimentary characteristics of tsunami deposits to estimate the recurrence interval and size of past tsunamis. Geologic hazards education: improving the transfer of scientific knowledge to the public for the purpose of risk reduction. Professional Experience 2011 - Present        Research Geologist, USGS, Alaska Science Center, Anchorage, Alaska 2006 - 2011            Regional Coastal Geologist, Oregon Department of Geology and Mineral Industries, Newport, Oregon 1999 - 2006            Senior Project Geologist, William Lettis & Associates, Inc., Walnut Creek, California 1994 - 1999            Research Fellow / Graduate Teaching Fellow, University of Oregon, Dept of Geological Sciences, Eugene, Oregon

Research Interest

Megathrust paleoseismology: understanding the Holocene history of great (M >8) earthquakes at the Alaska-Aleutian and Cascadia subduction zones. Active faulting in the Pacific Northwest: characterizing the recurrence interval, slip rate and style of deformation for shallow crustal faults in Alaska, Washington, Oregon and northern California. Paleogeodesy: reconstructing tectonic displacements for megathrust earthquakes over multiple seismic cycles using relative sea-level indicators. Tsunami geology: examining the sedimentary characteristics of tsunami deposits to estimate the recurrence interval and size of past tsunamis. Geologic hazards education: improving the transfer of scientific knowledge to the public for the purpose of risk reduction.

Publications

  • Sculpted by water, elevated by earthquakes—The coastal landscape of Glacier Bay National Park, Alaska

  • Microfossil measures of rapid sea-level rise: Timing of response of two microfossil groups to a sudden tidal-flooding experiment in Cascadia

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