United States Geological Survey Open-file Report 03-124

Aeromagnetic Interpretations for Understanding the
Hydrogeologic Framework of the Southern Espanola
Basin, New Mexico
by V.J.S. Grauch and Viki Bankey
2003
      Online_Linkage: http://pubs.usgs.gov/of/2003/ofr-03-124

Description of digital files included with this report are listed below.  All files are geographically registered using the following map projection parameters: UTM projection, zone 13, NAD27 (Clarke 1866), units in meters.

Image files of Plate 1 and Plate 2 are included as digital files in 
portable document (PDF) formats for plotting purposes.  The pdf files can be viewed on screen or printed from Adobe Acrobat Reader, which is available at no charge from www.adobe.com.  

In addition, the color shaded-relief image of the reduced-to-pole 
magnetic data from Plate 1 is included with minimal annotation in 
tagged image format (TIF) format for import into GIS programs or use 
with other overlays.  The color shaded-relief images of the 
aeromagnetic data were derived originally from displays created by 
ERMAPPER, using a sun azimuth of 270 degrees (west), sun elevation of 
60 degrees and nonlinear color scale, which is shown on Plate 1.  


FILENAME        FORMAT TYPE             EXPLANATION
sebmeta.txt                     Description of sebrtp.tif

sebrtp.tif         TIF          Tagged Image Format file of reduced-to-
                                  pole aeromagnetic data with tick 
sebrtp.tfw       geotif           marks as the only annotation.
               header file        Without the header file, the tif file 
                                  can be imported into many standard 
                                  graphics programs.  The header file 
                                  provides geographic information 
                                  (geotif) for direct import into 
                                  ARC/INFO and ARC/VIEW.  The .tfw file 
                                  must be in the same directory as the 
                                  .tif file.
sebrtp.pdf         PDF          Portable document format file for 
                                  viewing and printing Plate 1.  Print 
                                  on a largebed plotter with paper size 
                                  = ISO A0 (36"X48").
seblines.pdf       PDF          Portable document format file for 
                                  viewing and printing Plate 2.  Print 
                                  on a largebed plotter with paper size 
                                  = ISO A0 (36"X48").