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Woods Hole Science Center

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Dr. John Crusius

  
  U.S. Geological Survey,
Woods Hole Field Center
Quissett Campus, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598

Tel. (508) 457-2353
Fax. (508) 457-2310
Contact: jcrusius@usgs.gov 		John Crusius's image
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Curriculum Vitae

EDUCATION
  Ph.D.     Columbia University, Geochemistry, 1992
  M. Phil. Columbia University, Geochemistry, 1991
  M.A. Columbia University, Geochemistry, 1987
  B.A. Carleton College, Chemistry, 1983

PROFESSIONAL POSITIONS
  2003-present Research geochemist, USGS, Woods Hole, MA
  2000-2002 Research Associate, University of British Columbia.
  1998-1999 Senior Environmental Geochemist, Lorax Environmental Services, Vancouver.
  1997-1998 Research Scientist, IAEA Marine Environment Lab, Monaco.
  1992-1997 Postdoc and Research Associate. University of British Columbia.

EXPERTISE
  Quantifying fluxes of nutrients and other contaminants to the ocean via groundwater discharge through permeable coastal sediments (using 222Rn, Ra isotopes, salinity and temperature as tracers). Impacts of human activity on biogeochemical processes in the coastal ocean. Documenting recent environmental and climatic change from sedimentary records, using short-lived radionuclides (210Pb, 137Cs, 239+240Pu) as tracers for quantifying sedimentation and bioturbation rates. Inferring sediment ages and rates and processes of sediment mixing via numerical modeling of isotopic tracers. Metal and radionuclide mobility in sediments, and their impacts on sedimentary records, on water quality, and on biological productivity in the ocean (iron). Glacial/interglacial cycles changes in the marine carbon cycle, and climate, inferred from redox-sensitive metals (Re, Mo), and uranium-series radionuclides.

CURRENT FOCUS
 
  1. Quantifying fluxes of water, nutrients and metals through permeable coastal sediments using tracers (e.g. 222Rn, Ra isotopes, temperature and salinity).
  2. Assessing sediment and contaminant deposition histories using 210Pb, 137Cs and numerical sediment mixing modeling.
  3. coastal sources and fluxes of iron to the North Pacific ocean.
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