[Save] ESI Seminar: Friday 10/3

[Matthew Gardner]

Friday October 3, 12 Noon, 56-154
"Dynamics of the Ancient Carbon Cycle"
Professor Dan Rothman
Department of Earth Atmospheric and Planetary Sciences, MIT

Long-term changes in the Earth's carbon cycle are encoded in the isotopic 
composition of carbon buried in ancient sediments.
Extraordinarily large fluctuations in this signal occur in the geologic era 
preceding the first great diversification of animal life. Analysis of the 
geochemical records and construction of a simple model indicate that these 
large fluctuations also precede a major dynamical transition, from a carbon 
cycle evolving dynamically, far from steady state, to the slow 
"quasistatic" evolution of a steady state.  We suggest that this transition 
reflects a fundamental reorganization of the Earth's biogeochemical cycles.


Pick up some lunch immediately before the seminar in 16-168.


Next Seminar:
Friday October 10, 12 Noon, 56-154
Professor John Grotzinger
EAPS
"Did Extinction at the Precambrian-Cambrian Boundary lead to the Cambrian 
Radiation of Animals?"



Matthew Gardner, Ph.D.
Program Administrator
Earth System Initiative, 16-177
Massachusetts Institute of Technology
Cambridge, MA, 02139
617.253.6895
http://web.mit.edu/esi
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