Polygon boundary describing the source surveys used to build the Bathymetric Terrain Model of the U.S. Atlantic Margin of 100-meter resolution compiled by the U.S. Geological Survey (Esri Shapefile, Geographic WGS 84 Coordinate System)

Step 1: The extents of each surface (contributor) are used as input during the combine process in CARIS Base Editor and is transferred to a new feature layer and eventually exported as an Esri shapefile. Within CARIS Base Editor (v. 4.0- 4.1.14, Software was updated as new versions were available over the course of this project) select the "Create" a "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer.The general naming convention for the output shapefile is output name= "VesselName+Cont" (example= OECont for OkeanosExplorer and Cont for Contributor). Select the new feature layer and then export to a shapefile using the "export selection to shp" from the File menu. Attributes carried over during this process include the "Inform" field which is the location and name of the input .csar file

Step 2: Convert CARIS Contributor Layer to polygon Shapefile. Within CARIS Base Editor (v. 4.1.14) select the "Create" a "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer. The extents of each surface used as input during the combine process is transferred to new feature layer. Select the new feature layer and then export to a shapefile using the "export selection to shp" from the File menu. Attributes carried over during this process include the "Inform" field which is the location and name of the input .csar file.

Step 3: Convert CARIS Contributor Layer to polygon Shapefile. Within CARIS Base Editor (v. 4.1.14) select the "Create" a "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer. The extents of each surface used as input during the combine process are transferred to a new feature layer. Select the new feature layer and then export to a shapefile using the "export selection to shp" from the File menu. Attributes carried over during this process include the "Inform" field which is the location and name of the input .csar file Part 2: Make new Esri File Geodatabase (ver 9.3) to manage the contributor layers. Import the shapefiles from Part 1 above into the geodatabase using the context menu in ArcCatalog (ver 9.3). Input shapefile="VesselName"ContPgon.shp. Output feature class = "VesselName"ContPgon

Step 4: Convert CARIS Contributor Layer to polygon shapefile. Within CARIS Base Editor (v. 4.1.14) select the "Create" a "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer. The extents of each surface used as input during the combine process are transferred to new feature layer. Select the new feature layer and then export to a shapefile using the "export selection to shp" from the File menu. Attributes carried over during this process include the "Inform" field which is the location and name of the input .csar file.

Step 5: Convert CARIS Contributor Layer to polygon Shapefile. Within CARIS Base Editor (v. 4.1.14) select the "Create" a "new feature layer" from the main menu and use the spatial extent of the combined surface and name the new feature layer. The extents of each surface used as input during the combine process are transferred to new feature layer. Select the new feature layer and then export to a shapefile using the "export selection to shp" from the File menu. Attributes carried over during this process include the "Inform" field which is the location and name of the input .csar file.

Step 6. Mosaic the individual Contributor feature class layers into one feature class using the "Update" tool in ArcGIS (v. 10.3.1). 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: RBPFKN_ContV2.shp Update feature: HenPF_100mV2.shp Output feature: UpdateRBPFKNHen.shp Update 2: Input feature: UpdateRBPFKNHen.shp Update feature: OkeanosCombV2CDIG.shp Output feature: UpdateRBPFKNHenOE.shp Update 3: Input feature: UpdateRBPFKNHenOE.shp Update feature:OECombFH100mV2.shp Output feature:UpdateRBPFKNHenOEFH.shp

Step 7: Update the AtlanticMarginBathSource.shp published in version 1, with UpdateRBPFKNHenOEFH.shp to produce AtlanticMarginBathSource_V2.shp. Finally, project the shapefile from Mercator to Geographic WGS 84 coordinate system using ArcToolbox (v. 10.3.1)

Added keywords section with USGS persistent identifier as theme keyword.