Geological Society of America

T226 Aeolian Processes in Time and Space: Evidence from Landforms and Sediments

Tuesday, 27 September 2016
1:30 PM - 5:30 PM
Room 407

A DECADE OF THREE-DIMENSIONAL DUNE MORPHODYNAMIC OBSERVATIONS AT WHITE SANDS NATIONAL MONUMENT

Paper number: T226-5
Program: Technical Sessions
Time: 2:55 PM – 3:10 PM

Authors

Ryan C. Ewing Presenting Author
Texas A&M University, College Station, TX
Gary Kocurek
The University of Texas at Austin, Austin, TX
David Mohrig
The University of Texas at Austin, Austin, TX
Virginia Smith
Villanova University, Villanova, PA
M. Hildegard Reiser
Loveland, CO
David Bustos
White Sands National Park, Holloman Afb, NM

Abstract

Topography data derived from airborne lidar and structure-from-motion (SFM) imaging were collected during June 2007, June 2008, January 2009, September 2009, June 2010, August 2015, and January 2016 over the core dune field at White Sands National Monument in New Mexico, USA. The 2010 and earlier datasets were resolved at 1m/pixel spatial resolution with a vertical accuracy of +/- 10cm. The latest 2015 and 2016 datasets were collected at ~ 0.25m/pixel and have a vertical accuracy of +/- 5cm. These datasets have allowed for the unprecedented analysis of dune and dune-field properties and dynamics not previously accessible by traditional field observations or two-dimensional mapping from aerial or satellite imagery. In addition, these datasets have provided essential information on resource management to the national monument. Here we review the datasets, methods, and results from the nearly decade of three-dimensional dune-field mapping with emphasis on the three-dimensional properties of dunes, dune deformation, dune-dune interactions and field-scale variations in topography.

Geological Society of America Abstracts with Programs. Vol. 48, No. 7

doi: 10.1130/abs/2016AM-282341

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