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)

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Frequently anticipated questions:

What does this data set describe?

Title:
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)
Abstract:
Bathymetric Terrain Models (BTMs) of seafloor morphology are an important component of marine geological investigations. Advances in acquisition and processing technologies of bathymetry data have facilitated the creation of high-resolution bathymetric surfaces that approach the resolution of those available for onshore investigations. These BTMs provide a detailed representation of the Earth's subaqueous surface and when combined with other geophysical and geologic datasets, allow for interpretation of modern and ancient geologic processes.
  1. How might this data set be cited?
    U.S. Geological Survey, 2016, 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): Open-File Report 2012-1266, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts.

    Online Links:

    This is part of the following larger work.

    Andrews, Brian D., Chaytor, Jason D., Uri S. ten Brink, Brothers, Daniel S., Gardner, James V., Lobecker, Elizabeth A., and Calder, Brian R., 2016, Bathymetric Terrain Model of the Atlantic Margin for Marine Geological Investigations: Open-File Report 2012-1266, U.S. Geological Survey, Reston, Virginia.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -76.98924
    East_Bounding_Coordinate: -60.10277
    North_Bounding_Coordinate: 41.477867
    South_Bounding_Coordinate: 28.11144
  3. What does it look like?
    http://pubs.usgs.gov/of/2012/1266/GIS/shapefile/AtlanticMarginBathSource_V2.jpg (JPEG)
    Thumbnail image of bathymetric source polygon the Atlantic Margin.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 10-Mar-1990
    Ending_Date: 28-Aug-2015
    Currentness_Reference: ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • G-polygon (22)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
  7. How does the data set describe geographic features?
    AtlanticMarginBathSource
    polygon shapefile delineating the source of all input bathymetric grids. (Source: USGS)
    FID
    Internal feature number. (Source: Esri) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: Esri) Coordinates defining the features.
    Shape_Leng
    Perimeter length of feature in meters (Mercator, WGS84) automatically calculated in the feature class before it was exported as a shapefile. (Source: Esri)
    Range of values
    Minimum:36200.11
    Maximum:4920990.45
    Units:meters
    Shape_Area
    Area of feature in square meters (mercator projection) calculated in the feature class before it was exported to a shapefile. (Source: Esri)
    Range of values
    Minimum:26070128.63
    Maximum:142207623191.30
    Units:meters
    CruiseName
    The name of the cruise as listed at NCEI/NGDC. CruiseName value of "none" means the data were not archived or distributed by NGDC/NCEI. (Source: NGDC) Character set
    NGDC_ID
    The Identification number generated by NCEI/NGDC. NGDC_ID value of N/A means that data do not have a NGDC_ID because the data are not archived or distributed by NGCD/NCEI. (Source: NGDC) Character set
    Source
    The name of the CARIS fieldsheet that was used generate the polygon boundary. (Source: USGS) Character set
    vessel
    Name of the survey vessel used to collect the data. Vessel name of "None" describes the boundary of the TIN used to fill small gaps between surveys. (Source: NGDC) Character set.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
  2. Who also contributed to the data set?
    U.S. Geological Survey
  3. To whom should users address questions about the data?
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov

Why was the data set created?

The purpose of this polygon shapefile is to delineate the extent of each survey that contributed to the final BTM.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 28-Oct-2015 (process 1 of 7)
    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 Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • RBPFKN_Cont (CARIS contributor layer)
    Data sources produced in this process:
    • RBPHKN_ConV2_cvrage.shp
    Date: 28-Oct-2015 (process 2 of 7)
    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. Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • HenPF_100mV2_cont. (contributor Layer)
    Data sources produced in this process:
    • HenPF_100mV2.shp
    Date: 28-Oct-2015 (process 3 of 7)
    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 Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • OkeanosCombV2CDIG (contributor layer)
    Data sources produced in this process:
    • OkeanosCombV2CDIG.shp
    Date: 28-Oct-2015 (process 4 of 7)
    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. Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • OECombFH100mV2 (contributor Layer)
    Data sources produced in this process:
    • OECombFH100mV2.shp
    Date: 02-Nov-2015 (process 5 of 7)
    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. Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • RBPFKN_HenPFCombMGL (contributor Layer)
    Data sources produced in this process:
    • RBPFKN_HenPFCombMGL.shp
    Date: 02-Nov-2015 (process 6 of 7)
    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 Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • RBPFKN_ContV2.shp
    • UpdateRBPFKNHen.shp
    • UpdateRBPFKNHenOE.shp
    Data sources produced in this process:
    • OECombFH100mV2.shp
    Date: 10-Dec-2015 (process 7 of 7)
    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) Person who carried out this activity:
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    508-457-2310 (FAX)
    bandrews@usgs.gov
    Data sources used in this process:
    • UpdateRBPFKNHenOEFH.shp
    • AtlanticMarginBathSource.shp
    Data sources produced in this process:
    • AtlanticMarginBathSource_V2.shp
  3. What similar or related data should the user be aware of?
    U.S. Geological Survey, 2016, ambath100:.

    Online Links:

    This is part of the following larger work.

    Andrews, Brian D., Chaytor, Jason D., Uri S. ten Brink, Brothers, Daniel S., Gardner, James V., Lobecker, Elizabeth A., and Calder, Brian R., 2016, Bathymetric Terrain Model of the Atlantic Margin for Marine Geological Investigations: Open-File Report 2012-1266, U.S. Geological Survey, Reston, Virginia.

    Online Links:

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    The individual polygons only delineate the extent of bathymetric data used to compile the bathymetric terrain model and may not include all the data collected during the individual survey.
  5. How consistent are the relationships among the observations, including topology?
    Polygon boundaries are generated from 100 meter resolution bathymetric surface in CARIS Base Editor (v. 4.0-4.1.14) prior to interpolation to fill small holes in the base surface. Therefore, this shapefile may have holes or "no data" values within the boundaries of the shapefile that represent these "no data" values in the source surface. These holes were subsequently filled in the grid using interpolation in CARIS or filtering in ArcMap (v.10.3.1).

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Use_Constraints: None
  1. Who distributes the data set? (Distributor 1 of 1)
    Brian Andrews
    U.S. Geological Survey
    Geographer
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2348 (voice)
    bandrews@usgs.gov
  2. What's the catalog number I need to order this data set? AtlanticMarginBathSource_V2.zip: contains the Esri polygon shapefile (AtlanticMarginBathSource_V2.shp), AtlanticMarginBathSource_V2.jpg browse graphic, and the associated FGDC metadata in xml, txt, HTML, and FAQ format.
  3. What legal disclaimers am I supposed to read?
    Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    This zip file contains data available in Environmental Systems Research Institute (Esri) shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile.

Who wrote the metadata?

Dates:
Last modified: 17-Mar-2016
Metadata author:
Brian Andrews
U.S. Geological Survey
Geographer
384 Woods Hole Rd.
Woods Hole, MA
USA

508-548-8700 x2348 (voice)
508-457-2310 (FAX)
bandrews@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.9.32 on Thu Mar 17 11:32:00 2016