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.
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.
Assoc. Professor Mike Hilton, MNZM