B.A. (Geology), University of California, Santa Barbara, 1973.

M.S. (Geology), Dept. of Geology, University of California, Davis, 1978.

PhD (Oceanography), University of Hawaii, 1982.

TEACHING AND RESEARCH AREAS

Stable Isotope Geochemistry, Paleoceanography, Paleoclimatology,

Groundwater Hydrology and Stable Isotope Tracers, Nitrogen Isotope Pollution Tracers

Carbon Cycling and Accumulation in Modern and Ancient Environments

Oxygen Isotopes of Phosphates and Silicates, Paleobiology of Vertebrates.

SELECTED PUBLICATIONS:

In press Showers W.J. Brian Usry, Dave DeMaster, Matthew Fountain, Timothy McDade and John C. Fountain Nitrate Flux from Ground to Surface Waters Adjacent to the Neuse River Waste Water Treatment Plant. UNC WRRI Rep.

In press: Showers W. J. and Michalski, G. An automated procedure for the analysis of 17O of nitrate Rapid Comm. in Mass Spec.

2002 Spruill, T. Showers W., Howe, S. Application of Classification Tree Methods to Identify Nitrate Sources in Groundwater. J. Environ. Qual., Vol 31(5) 1538-1549.

2005 Israel, D.W., Showers W.J., Fountain M. Fountain J. Nitrate Movement in Shallow Groundwater from Swine Lagoon Effluent Spry Fields Managed under Current Application Regulations. Jour. Envir. Qual. 34: 1828-1842.

2003 Karr, J.D., Showers W.J., Jennings, G.D. Low-level nitrate export from confined dairy farming detected in North Carolina streams using 15N. Agriculture, Ecosystems, and Environment Vol 95(1), pg 103-110

2002 Showers W.J., Barrick, R., Genna, B. Isotopic Analysis of Dinosaur Bones: New Techniques for Old Questions. Analytical Chemistry Feb 2002 Vol 74(5), 143 A-150 A

2002 Karr, J.D., Showers W.J., Hinson, T.H. Nitrate source identification using d15N in a groundwater plume near an intensive swine operation. Ground Water Monitoring and Remediation 22(2), 68-75.

2002 Karr, J.D., Showers W.J. Stable Oxygen and hydrogen isotopic tracers in Amazon shelf waters during Amasseds. Oceanologica Acta 25, 71-78.

2001 Gerard C. Bond, Kromer, B., Beer, J., Muscheler, R. Evans, M., Showers, W., Hoffman, S., Lotti-Bond, R., Hajdas, I., Bonani, G. Persistent Solar Influence on North Atlantic Climate during the Holocene Science V. 294 (5549): 2130-2136

2001 Karr, J , Showers W.J. & Gilliam, W., Andres, A. Scott Tracing Nitrate Transport and Environmental Impact from Intensive Swine Farming using N-15. Journal of Environmental Quality 30(4) 1163-1175.