Barchyn, Thomas

 

Recent Submissions

  • Timescale dependence of aeolian sand flux observations under atmospheric turbulence 
    Martin, Raleigh L.; Barchyn, Thomas E.; Hugenholtz, Chris H.; Jerolmack, Douglas J. (American Geophysical UnionArts and ScienceDepartment of GeographyUniversity of Lethbridge, 2013-07-26)
    The transport of sand in saltation is driven by the persistently unsteady stresses exerted by turbulent winds. Based on coupled high-frequency observations of wind velocity and sand flux on a desert dune during intermittent ...
  • Geomorphological mapping with a small unmanned aircraft system (sUAS): feature detection and accuracy assessment of a photogrammetrically-derived digital terrain model 
    Hugenholtz, Chris H.; Whitehead, Ken; Brown, Owen W.; Barchyn, Thomas E.; Moorman, Brian J.; LeClair, Adam; Riddell, Kevin Donald Alexander; Hamilton, Tayler Kaylen (ElsevierArts and ScienceDepartment of GeographyUniversity of Lethbridge, 2013-03-26)
    Small unmanned aircraft systems (sUAS) are a relatively new type of aerial platform for acquiring high-resolution remote sensing measurements of Earth surface processes and landforms. However, despite growing application ...
  • Laboratory and field performance of a laser particle counter for measuring aeolian sand transport 
    Hugenholtz, Chris H.; Barchyn, Thomas E. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2011-02-23)
    This paper reports the results of laboratory and field tests that evaluate the performance of a new laser particle counter for measuring aeolian sand transport. The Wenglor® model YH03PCT8 (Wenglor) consists of a laser ...
  • Successes of soil conservation in the Canadian Prairies highlighted by a historical decline in blowing dust 
    Fox, Thomas A.; Barchyn, Thomas E.; Hugenholtz, Chris H. (Institute of Physics PublishingArts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-01-18)
    Blowing dust from agricultural fields has serious health and economic effects, which can be mitigated by soil conservation techniques. However, it is difficult to isolate improved land management in downstream records of ...
  • Real barchan dune collisions and ejections 
    Hugenholtz, Chris H.; Barchyn, Thomas E. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-01-26)
    From high-resolution satellite imagery of barchan sand dunes, we provide geomorphological evidence of collisions that result in the ejection of a barchan from the wake of another barchan dune. Previous interpretations ...
  • Aeolian dune field geomorphology modulates the stabilization rate imposed by climate 
    Barchyn, Thomas E.; Hugenholtz, Chris H. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-06-14)
    The activity of inland aeolian dune fields is typically related to the external forcing imposed by climate: active (bare) dunes are associated with windy and/or arid settings, and inactive (vegetated) dunes are associated ...
  • Predicting vegetation-stabilized dune field morphology 
    Barchyn, Thomas E.; Hugenholtz, Chris H. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-09-12)
    The activity of inland aeolian dune fields is typically related to the external forcing imposed by climate: active (bare) dunes are associated with windy and/or arid settings, and inactive (vegetated) dunes are associated ...
  • Remote sensing and spatial analysis of aeolian sand dunes: a review and outlook 
    Hugenholtz, Chris H.; Levin, Noam; Barchyn, Thomas E.; Baddock, Matthew C. (ElsevierArts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012)
    For more than four decades remote sensing images have been used to document and understand the evolution of aeolian sand dunes. Early studies focused on mapping and classifying dunes. Recent advances in sensor technology ...