ARCVIEW PROJECT READ-ME

The ArcView map documents and shapefiles used to create the trackline maps on this disc 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 documents were created with ESRI GIS software ArcView 8.1. The shapefiles, created with ArcView 3.2 and 8.1, may also be viewed with other versions of ArcView or public domain software ArcExplorer 2.0 (Windows) and 4.0 (Windows, Mac OS X, Unix, Linux), which can currently be downloaded from the ESRI website at http://www.esri.com/software/arcexplorer/index.html.
	
The ArcView map documents presented here are named bmr_all, area_a, area_a1, area_b, area_b1, chrp_all, area_c, area_c1, area_c2, area_d, and area_e. These maps show trackline navigation in the survey areas. Inset maps also show start of lines and 500 or 1,000 shot intervals along each line.

The following list describes the shapefiles included here as part of the ArcView project. Formal metadata for these layers are also available as .htm files (HTML pages viewable with any web browser) and .xml files (XML pages used by ArcCatalog). The USGS is not the originator of all layers used in creating the trackline maps on this disc. Due to use constraints set by the dataset source, a Louisiana waterbodies layer used to create the maps has not been included here. This layer is downloadable from the "Atlas: The Louisiana Statewide GIS" website at http://atlas.lsu.edu.

* 01bsol.shp: a point layer of the start of 01RCE05 boomer lines
* 01csol.shp: a point layer of the start of 01RCE05 chirp lines
* 02csol.shp: a point layer of the start of 02RCE01 chirp lines
* 01b500.shp: a point layer of 01RCE05 boomer 500-shot intervals
* 01c1000.shp: a point layer of 01RCE05 chirp 1,000-shot intervals
* 02c1000.shp: a point layer of 02RCE01 chirp 1,000-shot intervals
* 01btrkln.shp: a line layer of 01RCE05 boomer trackline navigation
* 01ctrkln.shp: a line layer of 01RCE05 chirp trackline navigation
* 02ctrkln.shp: a line layer of 02RCE01 chirp trackline navigation
* us_coast.shp: an area layer of the U.S. coastline