[Eoas-seminar] Reminder TODAY - Fwd: EOAS colloquium, Friday, Jan. 12 @ 3:00 PM,

[eoas-seminar at lists.fsu.edu]

Dear colleague,

Here is the announcement of this week's EOAS colloquium:

*Time*: TODAY @ 3:00 PM

*Location*:EOAS1050 (regularEOAScolloquiumroom)

*Speaker*: Zhaohua Wu, EOAS, Florida State University
*
*
*Title*: Waves in a spatially varying mean flow

*Abstract*: Mechanical waves are propagating dynamic disturbances that 
redistribute energy or other physical quantities in the spatial domain. 
How waves propagate in a medium has been one of the most studied topics 
in all fields of natural sciences. Yet many fundamental questions 
regarding wave propagation in a complicated and varying medium remain to 
be understood. In this talk, the speaker will introduce his study in the 
past decade on the propagation of tropical atmospheric waves in a 
varying mean flow, seeking to explain why the observed tropical 
atmospheric waves should behave as they are. The focal point is placed 
on how wave amplitude changes in a varying mean flow as it propagates 
away from its original location. By formulating waves in a general form 
independent of wave systems, an equation of the spatiotemporal change of 
wave amplitude that only involves medium characteristics is derived, 
which is a more physically intuitive and understandable form of the wave 
action equation proposed in the 1960s. This study of waves also involves 
a methodology shift used in diagnosing waves: from Fourier 
transform-based global wave formulation to novel localized wave formulation.

A Zoom link to the talk is available only by request.

Cheers,

Zhaohua



-- 
Amy Baco-Taylor, PhD
Professor
Earth, Ocean, and Atmospheric Sciences
Florida State University

(850) 645-1547

abacotaylor at fsu.edu
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