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Project Highlights 2006 - McCall Glacier RTK Survey 2006

McCall Glacier RTK Survey 2006

  • Principal Investigator (PI): Matt Nolan, University of Alaska, Fairbanks
  • UNAVCO Staff: Thomas Nylen
  • Dates: May-June 2006
  • Location: McCall Glacier, Alaska

Mass balance measurements, surface velocities, cross-section profiles and continuous topography of McCall Glacier were made using real-time kinematic (RTK) surveys. The mass balance profiles were first measured in the 1990s with an airborne laser survey. These same points were re-occupied to determine vertical changes. The original network of velocity stakes was installed in 2003 and since then has been measured twice year. Five Trimble 5700/R7 receivers were left for the summer to capture temporal velocity variations. One of these receivers will be left over winter to determine late season variations.

The research on the glacier is part of a multiyear project funded by the National Science Foundation's Freshwater Initiative to study the hydrologic regimes of the several rivers flowing from the Brooks Range. Previous mass balance measurements on the glacier have been made during the International Geophysical Year in 1957-58, the International Hydrological Decade in 1969-1975 and the latter half of the 1990s. Because of this history, McCall Glacier has the longest monitoring record of any glacier in Arctic Alaska.

RTK - Ski Survey on McCall Glacier, Alaska

Figure 1 - Two skiers, equipped with RTK GPS equipment, traverse McCall glacier.

RTK - Ski Survey on McCall Glacier, Alaska

Figure 2 - The same skiers, equipped with RTK GPS equipment, set out to traverse McCall glacier.

Last modified: Sunday, 11-May-2014 18:01:18 UTC

 

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