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U.S. Geological Survey Open-File Report 2005-1306

Continuous Resistivity Profiling Data from the Upper Neuse River Estuary, North Carolina, 2004-2005


Directory Structure

Top level directory:

index.htm - This file is intended to be the starting point for accessing this CD-ROM. It is written in the Hypertext Markup Language utilized by the World Wide Web (WWW) and must be opened with a WWW browser. Once opened, the user may browse the CD-ROM's contents as they would pages from the WWW.

Directories:

Directory data - What follows is a brief description of the data contained in the underlying directories.

  • 2004 - contains all the raw and processed Continuous Resistivity Profile (CRP) data from the Neuse River estuary collected in 2004. The subdirectories indicate the type of data (e.g. processed, raw, RES2DINV). They are then further broken down by day of survey. Below is an example directory structure, only showing survey day April 19. In addition to April 19, folders for April 20 through April 23 are available.
    • proc_resis - results of CRP data processed with Advanced Geosciences, Inc. (AGI) EarthImager 2D software.
      • apr19
        • def_wres - contains the minimum essential files output from EarthImager, using a default water resistivity value in the DEP file. These files include the linearized STG file, the DEP file (edited where appropriate to remove spurious bathymetric values), the XYZ file (where X is distance along line, Y is depth, and Z is resistivity value), the parameters initialization file, and the resultant JPEG CRP profile with bathymetry shown as a white line.
        • wres - contains the minimum essential files output from EarthImager, using a measured water resistivity value in the DEP file. These files include the linearized STG file, the DEP file (edited where appropriate to remove spurious bathymetric values), the XYZ file, the parameters initialization file, and the resultant JPEG CRP profile with bathymetry shown as a white line.
        • matlabimages - JPEG images plotting the XYZ data with the superimposed DEP bathymetry profile shown as a black line. All Matlab images use a common color scale, with similar vertical and horizontal scales (software limited). There is an image for the data processed with the default water resistivity as well as the data processed with a measured water resistivity.
    • raw_resis
      • apr19 - contains the raw STG and GPS files. In rare cases, one or both of the files needed to be edited to remove spurious data values that prevented processing. In those cases, the modified files are available.
    • res2dinv_format
      • apr19 - contains the RES2DINV format DAT file. This file is the result of running a VisualBasic6 program that reads the linearized STG file and the DEP file and reformats them to the RES2DINV format. The DEP file used has a measured water resistivity value.
  • 2005 - contains all the raw and processed CRP data from the Neuse River estuary collected in 2005. The subdirectories indicate the type of data (processed, raw, RES2DINV). Those are then further broken down by day of survey. Below is an example directory structure, only showing survey day May 3. In addition to May 3, folders for May 4 and May 5 are available.
    • proc_resis
      • may3
        • def_wres - contains the minimum essential files output from EarthImager, using a default water resistivity value in the DEP file. These files include the linearized STG file, the DEP file (edited where appropriate to remove spurious bathymetric values), the XYZ file, the parameters initialization file, and the resultant JPEG CRP profile with bathymetry shown as a white line.
        • wres - contains the minimum essential files output from EarthImager, using a measured water resistivity value in the DEP file. These files include the linearized STG file, the DEP file (edited where appropriate to remove spurious bathymetric values), the XYZ file, the parameters initialization file, and the resultant JPEG CRP profile with bathymetry shown as a white line.
        • matlabimages - JPEG images plotting the XYZ data with the superimposed DEP bathymetry profile shown as a black line. All Matlab images use a common color scale, with similar vertical and horizontal scales (software limited). There is an image for the data processed with the default water resistivity as well as the data processed with a measured water resistivity.
    • raw_resis
      • may3 - contains the raw STG and GPS files. In rare cases, one or both of the files needed to be edited to remove spurious data values that prevented processing. In those cases, the modified files are available.
    • res2dinv_format
      • may3 - contains the RES2DINV format DAT file. This file is the result of running a VisualBasic6 program that reads the linearized STG file and the DEP file and reformats them to the RES2DINV format. The DEP file used has a measured water resistivity value.
  • basemap - contains files needed as a backdrop for the GIS. This includes state outlines, the estuary bathymetry, and the NOAA medium resolution coastline.
  • navigation - contains shapefiles of the CRP tracklines, as well as point shapefiles with a point at a specified distance along each trackline. This is to help facilitate correlation between the CRP profile images and the geographic location of the profile.

Directory htmldocs: contains the HTML pages accessed within this report. This directory contains the following subdirectories:

  • 2004images_sm - contains JPEG images of the 2004 CRP profiles. This includes downsampled versions of the images generated by EarthImager and Matlab, as well as the full-resolution Matlab-generated images utilized in the HTML documents. All the full-resolution images are available from the appropriate location under the data directory. The subdirectory "thumbs" contains thumbnails of all the images.
  • 2005images_sm - contains JPEG images of the 2005 CRP profiles. This includes downsampled versions of the images generated by EarthImager and Matlab, as well as the full-resolution Matlab-generated images utilized in the HTML documents. All the full-resolution images are available from the appropriate location under the data directory. The subdirectory "thumbs" contains thumbnails of all the images.
  • icons - contains miscellaneous images and icons used in the creation of the HTML pages.

 


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