How High is that Dune? A Comparison of Methods Used to Constrain the Morphometry of Aeolian Bedforms on MarsMethods traditionally used to estimate the relative height of surface features on Mars include: photoclinometry, shadow length and stereography. The MOLA data set enables a more accurate assessment of the surface topography of Mars. However, many small-scale aeolian bedforms remain below the sample resolution of the MOLA data set. In response to this a number of research teams have adopted and refined existing methods and applied them to high resolution (2-6 m/pixel) narrow angle MOC satellite images. Collectively, the methods provide data on a range of morphometric parameters (many not previously available for dunes on Mars). These include dune height, width, length, surface area, volume, longitudinal and cross profiles). This data will facilitate a more accurate analysis of aeolian bedforms on Mars. In this paper we undertake a comparative analysis of methods used to determine the height of aeolian dunes and ripples.
Document ID
20040062569
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Bourke, M. (Planetary Science Inst. Tucson, AZ, United States)
Balme, M. (University Coll. London, United Kingdom)
Beyer, R. A. (Arizona Univ. Tucson, AZ, United States)
Williams, K. K. (National Air and Space Museum Washington, DC, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Mars: Wind, Dust Sand, and Debris