Lower Rio Puerco 1970s georeferenced aerial photographs
Dates
Publication Date
2016
Time Period
1975-08-26
Time Period
1979-05-30
Citation
Griffin, E.R., 2016, Lower Rio Puerco geospatial data, 1935 – 2014: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F72N50CM.
Summary
The 1970s images were obtained as digital scans on CDs, with no metadata. Source information for the original aerial photographs is not available. Original photo scale was about 1:40,000 for the 1975 images (filenames beginning "r75")and 1:12,000 for the 1979 images (filenames beginning "rfl"). I registered and rectified these images using identifiable common points from 1996 DOQQs. See the description of positional accuracy below. Data derived from features mapped from the 1970s images were presented in: Friedman, J.M., Vincent, K.R., Griffin, E.R., Scott, M.L., Shafroth, P.B., and Auble, G.T., 2015, Processes of arroyo filling in northern New Mexico, USA, GSA Bulletin, 127(3/4), 621-640. doi: 10.1130/B31046.1
Summary
The 1970s images were obtained as digital scans on CDs, with no metadata. Source information for the original aerial photographs is not available. Original photo scale was about 1:40,000 for the 1975 images (filenames beginning "r75")and 1:12,000 for the 1979 images (filenames beginning "rfl"). I registered and rectified these images using identifiable common points from 1996 DOQQs. See the description of positional accuracy below. Data derived from features mapped from the 1970s images were presented in:
Friedman, J.M., Vincent, K.R., Griffin, E.R., Scott, M.L., Shafroth, P.B., and Auble, G.T., 2015, Processes of arroyo filling in northern New Mexico, USA, GSA Bulletin, 127(3/4), 621-640. doi: 10.1130/B31046.1
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1970s_RPimages_tif.xml Original FGDC Metadata
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1970s_imagery.zip
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Purpose
This image set was used to map lower Rio Puerco arroyo geomorphic features (Highway 6 to Bernardo) in the mid- to late-1970s. The mapped features were used to compute average channel and arroyo widths and to determine shrub canopy cover across the arroyo bottom in selected segments. Results from mapping were used to determine geomorphic change in the arroyo through time since the 1970s.
