Gary Hughes, from Raytheon Santa Barbara Remote Sensing in California, will talk about a direct, empirical correlation between atmospheric CO2 and land temperature measurements that indicates a strong greenhouse warming effect: 5 degrees Celsius for CO2 doubling.
Berry Lyons, Department of Geological Sciences and Byrd Polar Research Center at the Ohio State University, will take a look at how urbanization--specifically in Atlanta, Georgia and Columbus, Ohio--affects water quality in local rivers. He will note the similarity of increased concentrations of elements in the Chattahoochie River downstream from Atlanta, Georgia, with those observed for the Seine River as it passes through metro Paris. (Yet the Scioto River in the Columbus, Ohio, metro area, shows little urban influence.) The urban "footprint" in various areas in the United States and Europe has made quite an impact on the water quality of rivers downstream from major urban centers.
SESSION 36: ROLE OF HYDROTHERMAL SYSTEMS IN BIOSPHERIC EVOLUTION.
Wednesday, June 27
Abstracts: http://gsa.confex.com/gsa/2001ESP/finalprogram/session_183.htm
Poster Session 40 Abstracts: http://gsa.confex.com/gsa/2001ESP/finalprogram/session_997.htm.
Hydrothermal environments are unique because they offer a potentially widespread habitat for life both on the early Earth, and elsewhere in the Solar System. The study of hydrothermal systems provides a doorway into the early history of life and allows us to better understand the origins of our biosphere, its history, and place in the universe. This session will provide an updated overview of the field and will serve as a forum to report its cutting-edge science.
"I think one of the most intriguing things about hydrothermal systems is that they teem with life at temp
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Contact: Ann Cairns
acairns@geosociety.org
303-447-2020 ext1156
Geological Society of America
13-Jun-2001