Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Alumni 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Quantum 
 Publications 
 Publications 
 2007 
 2006 
 2005 
 2004 
 2003 
 2002 
 2001 
 2000 
 <1999 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Students 
 Summer Research 
 Student Application 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 PD Travel Request 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Monday, April 04, 2011
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Colloquium

Separation of Scales in Rotating and Stratified Flow

Beth Wingate
CCS-2: COMPUTATIONAL PHYSICS AND METHODS, LANL

Earth's high latitudes stand to be among the first regions affected by climate change issues due to changes induced by melting ice in the Arctic and Antarctic. Motivated by gaining fundamental understanding of ocean dynamics at high latitudes my collaborators and I have derived new equations, based on the method of multiple scales presented in Embid and Majda (1996,1998), that address the scale separation between slow- and fast-time scale dynamics in the limit of fast rotation while retaining order one affects due to stratification. The new slow equations and their conservation laws describe the {\sl dynamics of Taylor-Proudman flows}. We also present numerical results that support the theory and that show the spontaneous creation of Taylor-Proudman columns. The projection operators derived as a part of these results have mathematical and numerical implications for the development of time-stepping algorithms in next-generation, variable-resolution, climate models.

Host: Cristiano Nisoli, T-4, CNLS, cristiano@lanl.gov