Polygon Boundary Describing the Source Surveys Used to Build the Bathymetric Terrain Model of the Puerto Rico Trench and Northeastern Caribbean Region Compiled by the U.S. Geological Survey (PRBATHSOURCE, Esri Shapefile, Geographic projection WGS 84).

Step 1: Create a new blank feature layer, and transfer the extents of the Contributor Layer produced in the combine process described below. Within CARIS Base Editor (v. 4.0) select the "Create" and "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer. Input name="Contributor", output name= "VesselName+Cont" (example= RBCont). The extent of the input Contributor layer is produced during the "Combine" operation in Base Editor.

Step 2: Convert the new feature layer to an Esri feature class. Part 1: Manually select the new feature layer in the table of contents and then under "File" in the main menu select "Export" to "Selection to shapefile". Input = "VesselName"Con from Step 1, Output= "VesselName"ContPgon.shp. Part 2: Make new Esri file geodatabase (v. 9.3.1) to manage the contributor layers. Import the shapefiles from Part 1 above into the geodatabase using the context menu in ArcCatalog (v. 9.3.1). Input shapefile="VesselName"ContPgon.shp. Output feature class = "VesselName"ContPgon

Step 3: Merge the individual Contributor feature class layers into one feature class using the "Update tool in ArcGIS (v. 9.3.1). The update features are used to erase, then replace, the features in the input feature class or feature layer. Three consecutive update steps were performed: Update 1: input feature= RB03Cont, update feature= RB03_02_06Cont, output feature= RBAll4Cont. Update 2: input feature= HespCont, update feature=RBAll4Cont, output feature=RBHespCont Update 3: input feature= RBHespCont, update feature=NF_NautCont, output feature=PRBathSource.

Step 4: Export the feature class from a geodatabase feature class (PRBathSource) to a shapefile (PRBathSource.shp) using the context menu in ArcMap (ver. 9.3.1). During the export operation, the shapefile was projected from UTM Zone 19 (WGS 84) to Geographic (WGS 84) by using the same coordinate system as the data frame in ArcMap (set to Geographic WGS 84). Add two text fields "Source" and "SurveyName" to the shapefile. Populate "Source" field with "INFORM" field then delete "INFORM" field. Manually populate the "SurveyName" field with USGS Field Activity Number (if survey has one). Use the NGDC CruiseName for NF-05-CRER.

Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The link to the data in the Distribution_Information section had to be fixed. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.

Added keywords section with USGS persistent identifier as theme keyword.