Re: Question regarding GPS units

From: Thomas Fly (tfly@alumni.caltech.edu)
Date: Mon Jun 14 2004 - 23:29:10 EDT

  • Next message: Kent Yeglin: "Re: Obs 2004 Jun 13/14"

    I searched North America from latitude 23 N to 55 N, and longitude 61 W to 126
    W, after substituting the SRTM-updated GTOPO30 tile W100N40.DEM for the
    original, looking for the maximum & minimum elevations.
    
    Using the original GTOPO30 tiles (4 are required to cover this area), apparently
    I was able to correctly locate the summit of Pike's Peak in Colorado, and a
    place in Death Valley, California, which had a minimum elevation of -79 meters.
    
    However, there's a spot in "Smith Lake" (about 34 miles SE of St. Louis,
    Missouri) with an elevation of about 131 meters (according to DeLorme Topo USA
    5.0), that the SRTM W100N40.DEM file indicates is at -171 meters!
    
    >From http://www2.jpl.nasa.gov/srtm/dataprod.htm
    
    "The Shuttle Radar Topography Mission C-band data for North America and South
    America are available to the public.  The complete public data set will be
    available by mid 2004."
    
    Hopefully that means that soon there'll be a debugged version of the SRTM data.
    
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