2002 Denver Annual Meeting (October 27-30, 2002)

Session No. 105
Monday, 28 October 2002: 1:30 PM-5:30 PM

T71. Feedback in Earth Systems: Determining System Response to Perturbation Through Observations and Modeling

 

J. Alcock and Lee Kump, Advocates
Paper #
Start Time
1
1:30 PM
CYANOBACTERIAL EMERGENCE AT 2.8 GYA AND GREENHOUSE FEEDBACKS
SCHWARTZMAN, David W., Biology, Howard Univ, Washington, DC 20059 and CALDEIRA, Ken, Climate and Carbon Cycle Group, Lawrence Livermore National Lab, 7000 East Ave., L-103, Livermore, CA 94550, dws@scs.howard.edu, dws@scs.howard.edu
2
1:50 PM
RESERVOIR SIZE, RESIDENCE TIME, AND THE RATE OF ISOTOPIC CHANGE: EXAMINING THE BEHAVIOR OF MESOPROTEROZOIC MARINE SULFATE
KAH, L.C., Department of Geological Sciences, Univ of Tennessee, Knoxville, TN 37996, LYONS, T.W., Department of Geological Sciences, Univ of Missouri, Columbia, MO 65211 and FRANK, T.D., Department of Geosciences, Univ of Nebraska, Lincoln, NE 68588, lckah@utk.edu, lckah@utk.edu
3
2:05 PM
MA\XIMUM AND MINIMUM OBLIQUITY CYCLES IN THE LATE CARBONIFEROUS ROCKY MOUNTAINS
SMITH, Linda S.S.1, OTTO-BLIESNER, Bette L.2, SHIELDS, Christine2, BRADLEY, Ester2 and AMMON, Casper2, (1)Fulbright Lecturer/Researcher, Katmandu, Nepal, (2)UCAR, Boulder, CO, smithlss@mos.com.np, smithlss@mos.com.np
4
2:20 PM
FEEDBACK AND PHANEROZOIC ATMOSPHERIC CO2 AND O2
BERNER, Robert A., Geology and Geophysics, Yale Univ, 210 Whitney Ave, New Haven, CT 06520-8109, robert.berner@yale.edu, robert.berner@yale.edu
5
2:40 PM
BURNING EXPERIMENTS AND LATE PALEOZOIC HIGH O2 LEVELS
WILDMAN Jr, Richard A.1, ROBINSON, Jennifer M.2, ESSENHIGH, Robert H.3, HICKEY, Leo1 and BERNER, Robert A.1, (1)Geology and Geophysics, Yale Univ, P.O. Box 208109, New Haven, CT 06520-8109, (2)Environmental Science, Murdoch Univ, South Street, Murdoch, 6150, Australia, (3)Mechanical Engineering, Ohio State Univ, 206 West 18th Avenue, Columbus, OH 43210, richard.wildman@yale.edu, richard.wildman@yale.edu
6
2:55 PM
A LATE CRETACEOUS CHRONOLOGY OF LARGE, RAPID SEA-LEVEL CHANGES: GLACIOEUSTASY DURING THE GREENHOUSE WORLD
MILLER, Kenneth G.1, SUGARMAN, Peter2, BROWNING, James V.1, KOMINZ, Michelle A.3, HERNANDEZ, John C.4, OLSSON, Richard K.4, KATZ, Miriam E.4 and WRIGHT, James D.4, (1)Department of Geological Sciences, Rutgers, The State Univ of New Jersey, 610 Taylor Rd, Piscataway, NJ 08854-8066, (2)New Jersey Geol Survey, PO Box 427, Trenton, NJ 08625, (3)Geosciences, Western Michigan University, 1187 Rood Hall, Kalamazoo, MI 49008-3805, (4)Department of Geological Sciences, Rutgers, The State University of New Jersey, 610 Taylor Rd, Piscataway, NJ 08854-8066, kgm@rci.rutgers.edu, kgm@rci.rutgers.edu
7
3:10 PM
SEAWATER STRONTIUM/CALCIUM RATIO INDICATES PLATE TECTONIC CONTROL ON THE EVOLUTION OF CARBONATE SEDIMENTATION
STEUBER, Thomas, Institute of Geology, Mineralogy and Geophysics, Ruhr Univ, Universitaetsstrasse 150, Bochum, 44801, Germany, thomas.steuber@ruhr-uni-bochum.de, thomas.steuber@ruhr-uni-bochum.de
 
3:25 PM
Break
8
3:40 PM
CARBON ISOTOPE EXCURSIONS: FLUXES, FEEDBACKS AND FALLACIES
ARTHUR, Michael A. and KUMP, Lee R., Penn State Astrobiology Research Center and Department of Geosciences, Pennsylvania State Univ, University Park, PA 16802, arthur@geosc.psu.edu, arthur@geosc.psu.edu
10
4:10 PM
DOWNSTREAM ADJUSTMENT OF CHANNEL WIDTH TO SPATIAL GRADIENTS IN RATES OF ROCK UPLIFT AT NAMCHE BARWA
MONTGOMERY, David R.1, FINNEGAN, Noah1, ANDERS, Alison1 and HALLET, Bernard2, (1)Earth & Space Sciences, Univ of Washington, PO Box 351310, Seattle, WA 98195-1310, (2)Quaternary Research Center, Univ of Washington, 19 Johnson Hall, University of Washington Box 351360, Seattle, WA 98195, dave@geology.washington.edu, dave@geology.washington.edu
11
4:30 PM
VARIATION IN AQUIFER HYDRAULIC GRADIENT RELATED TO NEAR-DECADAL CLIMATE CHANGES
ROHE, Michael J.1, SMITH, Richard P.2 and MCLING, Travis2, (1)Applied Geosciences Department, Idaho National Engineering and Environmental Lab, P.O. Box 1625, Mail Stop 2107, Idaho Falls, ID 83415-2107, (2)Geosciences Research Department, Idaho National Engineering and Environmental Lab, P.O. Box 1625, Mail Stop 2107, Idaho Falls, ID 83415-2107, mil@inel.gov, mil@inel.gov
12
4:45 PM
POSITIVE FEEDBACK AT THE MINERAL-MICROBE-WATER INTERFACE: A FEW EXAMPLES
BRANTLEY, Susan L., LIERMANN, Laura and SCHAPERDOTH, Irene, Geosciences, Penn State, Univ Pk, PA 16802, brantley@geosc.psu.edu, brantley@geosc.psu.edu
13
5:05 PM
MULTIPLE STEADY STATES CREATED BY POSITIVE FEEDBACK AND THEIR EFFECTS ON SYSTEM RESPONSE TO PERTURBATION
ALCOCK, J., Environmental Sciences, Penn State Abington College, 1600 Woodland Rd, Abington, PA 19001, jea4@psu.edu, jea4@psu.edu
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