Articles | Volume 9, issue 2
Earth Syst. Sci. Data, 9, 435–443, 2017
https://doi.org/10.5194/essd-9-435-2017
Earth Syst. Sci. Data, 9, 435–443, 2017
https://doi.org/10.5194/essd-9-435-2017

  12 Jul 2017

12 Jul 2017

High-resolution elevation mapping of the McMurdo Dry Valleys, Antarctica, and surrounding regions

Andrew G. Fountain1, Juan C. Fernandez-Diaz2, Maciej Obryk1, Joseph Levy3, Michael Gooseff4, David J. Van Horn5, Paul Morin6, and Ramesh Shrestha2 Andrew G. Fountain et al.
  • 1Department of Geology Portland State University, Portland, OR 97201, USA
  • 2National Center for Airborne Laser Mapping, University of Houston, Houston, TX 77204, USA
  • 3University of Texas, Institute for Geophysics, Jackson School of Geosciences, Austin, TX 78758, USA
  • 4Institute of Arctic & Alpine Research, University of Colorado, CO Boulder, 80309
  • 5Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA
  • 6Polar Geospatial Center, University of Minnesota, St. Paul, MN 55108, USA

Abstract. We present detailed surface elevation measurements for the McMurdo Dry Valleys, Antarctica derived from aerial lidar surveys flown in the austral summer of 2014–2015 as part of an effort to understand geomorphic changes over the past decade. Lidar return density varied from 2 to > 10 returns m−2 with an average of about 5 returns m−2. Vertical and horizontal accuracies are estimated to be 7 and 3 cm, respectively. In addition to our intended targets, other ad hoc regions were also surveyed including the Pegasus flight facility and two regions on Ross Island, McMurdo Station, Scott Base (and surroundings), and the coastal margin between Cape Royds and Cape Evans. These data are included in this report and data release. The combined data are freely available at https://doi.org/10.5069/G9D50JX3.

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Short summary
We present detailed surface elevation measurements for the McMurdo Dry Valleys, Antarctica, and surroundings, derived from aerial lidar surveys flown in the austral summer of 2014–2015 as part of an effort to understand landscape changes over the past decade. Lidar return density varied from 2 to > 10 returns per square meter with an average of about 5 returns per square meter. vertical and horizontal accuracies are estimated to be 7 cm and 3 cm, respectively.