LYONS, BERRY W. / Sciences de la Terre / Chercheurs

Centre International de Recherche Scientifique

Chercheurs

Sciences de la Terre / LYONS, BERRY W.

lyons.142osu.edu

Position

Professor of earth sciences and Director of the Byrd Polar Research Center
Professor, Department of Geological Sciences
The Ohio State University
Columbus Ohio, US.

Thèmes de recherche

His research is directed toward four major goals.
* Hydrogeology
* Earth System Science
* Geochemistry

The first is the use of geochemical techniques to trace global change and the determination of the trace element concentrations in surface and groundwater as well as sediments. The global change research includes the utilization of lake sediments, soil profiles, and ice cores as historic records of atmospheric, oceanic, and terrestrial processes. The lake work has been focused on semi-arid, closed basin lakes in Australia, the northern Great Plains, Antarctica, as well as the Great Basin region. This research has developed detailed paleo-hydrological histories of these closed basins over the past few thousand years.

The second area of research has included the determination of trace metals such as lead, copper, zinc, chromium, and silver in river, lake, and groundwater samples. Much work has involved the impact of present and past mining activities on metal in the distribution environment. More recently, with his students, he has been studying oxyanions such as arsenic, selenium, vanadium, and molybdenum in both surface and groundwaters of the Great Basin. They have also been investigating the role of urbanization on water quality in such places as Atlanta, GA and Columbus, OH.

Thirdly, his group has done extensive work on the geochemistry of suspended matter from high-standing islands such as New Zealand and Taiwan in order to determine the role of these islands in oceanic geochemical mass balances.

Finally, his research group is the lead institution for the McMurdo Dry Valleys Long Term Ecological Research project (http://huey.colorado.edu/). They are working with a group of glaciologists, hydrologists and ecologists in order to determine the structure and function of the ecosystems in these polar deserts. They hope to better understand the role of climate change in the development and evolution of these ecosystems. In addition, we have been involved in the McMurdo Dry Valleys Schoolyard Long Term Ecological Research project.

Publications

Carey, A.E., Nezat, C.A., Pennock, J.R., Jones, T. and Lyons, W.B., 2003, Nitrogen budget of the Mobile-Alabama River system watershed, Geochemistry: Exploration, Environment, Analysis, 3, 239-244

Fountain, A.G., and Lyons, W.B., 2003, Century to millennial scale climate change and ecosystem response in Taylor Valley, Antarctica, Climate Variability and Ecosystem Response at Long Term Ecological Research Sites, eds. D. Greenland, D.G. Goodin and R.C. Smith, Oxford University Press, 319-340.

Gooseff, M.N., Barrett, J.E., Doran, P.T., Fountain, A.G., Lyons, W.B., Parsons, A.N., Porazinska, D.L., Virginia, R.A. and Wall, D.H., 2003, Snow patch influence on soil biogeochemical processes and invertebrate distribution in the McMurdo Dry Valleys, Antarctica, Arctic, Antarctic and Alpine Research, 35, 92-100

Lyons, W.B., Nezat, C.A., Benson, L.V., Bullen, T.D., Graham, E.Y., Kidd, J., Welch, K.A., and Thomas, J.M., 2003, Strontium isotopic signatures of the Taylor Valley lakes, Southern Victoria Land, Antarctica: Chemical weathering in a polar climate, Aquatic Geochem., 8, 75-95.

Lyons, W.B., Welch, K.A., Fountain, A., Dana, G., Vaughn, B. and McKnight, D.M., 2003, Surface glaciochemistry of Taylor Valley, Southern Victoria Land, Antarctica and its relationship to stream chemistry, Hydrological Processes, 17, 115-130.

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