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Physics & Astronomy Colloquium - Ethan Deyle '08, UC San Diego
Start Date: 11/17/2017Start Time: 12:30 PM
End Date: 11/17/2017End Time: 2:00 PM

Event Description:
Physics and Astronomy Colloquium
Friday, November 17, 2017
12:30 pm, Science Center 199

Ethan Deyle '08
Postdoctoral Scholar
Climate, Atmospheric Science & Physical Oceanography
University of California San Diego

Nonlinear Dynamic in Nature: Mathematics for an Equation-Free World

Equations have a long, proud history in the sciences. However, they are not without limits! In Earth and environmental sciences, the same fundamental laws are at play as are in the physics or chemistry lab, but the behavior we seek to explain is happening at much larger scales. It’s emergent behavior. While a great deal of effort is put into finding equations that describe these phenomena, the various mathematics of non-parametric modeling can be much better suited to the practical reality. In the first half of the talk, I’ll discuss these general ideas and give an introduction to my favored approach, “empirical dynamic modeling”. In the second half, I will describe a specific ongoing study of deoxygenation in Lake Geneva. Despite the physics of the lake being relatively simple, the dynamics of oxygen are also deeply convolved with the lake ecology. Consequently, study of the system with equation-free empirical dynamic modeling finds substantially greater traction than previous equation-based attempts.

Location Information:
*Swarthmore College - Science Center
Room: Science Center 199 - Cunniff Hall
Contact Information:
Name: Physics & Astronomy
Phone: (610) 328-8258

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