Dedicated to better understanding aeolian processes

Menu

ISAR Virtuaeolian Seminar Series

The Board of ISAR has been considering options for an on-line series of presentations by member of our aeolian community. In part to soften the disappointment of not meeting in Namibia this year, but also to maintain links with members between ICAR meetings and to share recent work and findings in aeolian science.

 

The Board of ISAR invite you to attend the second seminar in our Virtuaeolian Seminar Series, to be presented by Andrew Gunn of the University of Pennsylvania, and chaired by Dr Christy Swann, Principal Investigator, Sediment Dynamics Section, Ocean Sciences Division, U.S. Naval Research Laboratory; to be delivered 19th Jan, 2021 at 14:00 EST USA.

 

Abstract: When we identify a coupling between atmospheric winds and the sediment bed it greatly improves our understanding of how dune landscapes manifest; for example, Bagnold's kink, the saturation length, or the recirculation bubble. These previously identified phenomena play out at the spatial scale of a pair of dunes or smaller. At the scale of an entire dune field, however, system-wide couplings can emerge that are completely decoupled from the details at the dune-pair scale. In this seminar I am excited to discuss some of my PhD research on these mesoscale (10-100 km) couplings. Using White Sands Dune Field as a case study and a global analysis of 45 dune fields synthesizing multiple relevant datasets, I focus on understanding what determines the size of dunes, how their presence can cause large-scale flow deceleration and the microclimates they create. This work frames dune fields as systems that mature under non-equilibrium processes and has important implications for how we think about transport events, dune evolution and wind profiles.

 

I know this talk and the subsequent discussion will be of interest to ISAR members and we warmly invite you and your colleagues to participate.  

 

Register in advance: https://otago.zoom.us/meeting/register/tJctceiurjwtGdV1nrX-83mXKNnqKxudy8dCWYwy2u

After registering, you will receive a confirmation email containing information about joining the meeting.

  The talk is at the following times depending where you will be joining us from:

 

Birmingham, USA                    Thu, 12 Nov 2020 at 13:00    CST    

London, United Kingdom       Thu, 12 Nov 2020 at 19:00   GMT    

Berlin, Germany                       Thu, 12 Nov 2020 at 20:00   CET    

Sydney, Australia                     Fri, 13 Nov 2020 at 06:00      AEDT   

Los Angeles, USA                     Thu, 12 Nov 2020 at 11:00    PST    

Wellington, New Zealand       Fri, 13 Nov 2020 at 08:00     NZDT   

Shanghai, China                        Fri, 13 Nov 2020 at 03:00     CST    

Toronto, Canada                      Thu, 12 Nov 2020 at 14:00    EST

 

 

Finally, we would welcome nominations and volunteers for seminars later in the year and through 2021, including proposals from early-career researchers and panel discussions.

 

Best wishes from myself and Dr Graziela Miot da Silva, Flinders University

Co-convenors ISAR Virtuaeolian Seminar Series.

 

Mike

 

Assoc. Professor Mike Hilton, MNZM