ArcGIS Map Document Readme

The map document and shapefiles used to create the trackline maps provided in this 
archive can be found in the arc.zip file located in the arc subfolder of the software folder 
located at the top level of the disc. The map document was created with PC-compatible 
Environmental Systems Research Institute (ESRI) ArcGIS 10 software. The arc.zip file also 
contains an images folder, which stores .gif images of each trackline's subbottom profile.  
To access these images using ArcMap 10, open the map document, 10bim04_location.mxd or 10bim04_area1,
then click on the hyperlink button (the symbol is a lightning bolt) located on the toolbar.  
Once this is activated, the tracklines will all change to blue, indicating they have 
hyperlinks. Selecting a trackline will open up the associated printable profile image. 
Shapefiles may also be viewed using other versions of ESRI ArcGIS for Desktop software including 
their free software, ArcGIS Explorer 
(http://www.esri.com/software/arcgis/explorer/index.html); however, the hyperlink 
feature is disabled when using this software. 
	
The map document displays trackline navigation, the start of line (green dots), and 1,000-
shot-interval locations (black dots) along each line. The Points to Lines ArcScript, 
downloadable at http://arcscripts.esri.com/details.asp?dbid=12702, was used to create the 
trackline layer. 

The list below describes the shapefiles provided with the ArcGIS map document. Metadata 
are available as FGDC-compliant text and XML documents (used by ArcCatalog).

*Note: ArcMap 10 .mxd files are not backward compatible; however, the shapefiles can
be viewed using earlier versions of ArcGIS software.


10bim04_trkln:
Line layer of 10BIM04 chirp trackline navigation

10bim04_shots:
Point layer of 10BIM04 chirp 1,000-shot-interval locations

10bim04_sol:
Point layer of the start of 10BIM04 chirp tracklines

MS_AL_shoreline
Polygon layer of the Mississippi and Alabama shorelines derived from USGS
2007 Experimental Advanced Airborne Research Lidar (EAARL) survey Bare Earth 
Digital Elevation Maps (DEMs)