EDUCATIONPh.D., Ecology, Duke University, 2009B.A., Biology, Willamette University, 2000PROFESSIONAL POSITIONS2011-Present Research Ecologist, U.S. Geological Survey, Wetland and Aquatic Research Center, Louisiana, USA2009-2011 Postdoctoral Research Scientist, U.S. Environmental Protection Agency, Gulf...
A tidal marsh bank exposed during low tide on Sitkinak Island, Alaska. The bank reveals ledges of alternating peat and silt. Abrupt uplift and subsidence during large megathrust earthquakes is interpreted to be the cause of the alternating layers.
Geologists examine an exposure of a tidal marsh bank on Sitkinak Island, Alaska. The bank exposes interbedded peat and silt that records sudden vertical land movements associated with megathrust fault slip during large earthquakes.
Geologists extract a hand-driven core from 2-3 m depth on Sitkinak Island, Alaska. The cores contain peat with interbedded sand layers that record inundation of the coast by prehistoric tsunamis. (l-r: Peter Haeussler, USGS; Andrew Kemp, Tufts University; Alan Nelson, USGS)