Attribute_Accuracy_Report:
Features were manually drawn. Many of the artifacts were lines (i.e., infinitely thin) that were delineated by polygonal features with a finite width. The drawn width does not represent an area for the artifact, but rather outlines the general location of the artifact.
The individual and merged elevation datasets were checked for accuracy in the coastal area using coloring schemes that highlighted elevations near sea level (e.g., -10 m to 10 m). These areas were delineated manually and at multiple scales. Features contained in this dataset do not locate all elevation artifacts.
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal accuracy of the features were dependent upon the horizontal accuracy of the source terrain models. The feature boundary locations were manually drawn and do not represent an exact position or boundaries of an artifact, but instead were meant to indicate the presence of an artifact within the area encompassed by the polygon feature.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: The shapfile has no vertical component.
Source_Information:
Source_Citation:
Citation_Information:
Originator: P.G. Grothe
Originator: L.A. Taylor
Originator: B.W. Eakins
Originator: K.S. Carignan
Originator: D.Z. Friday
Originator: M. Love
Publication_Date: 2012
Title: South Padre Island, TX 1/3 arc-second NAVD 88 DEM
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: NOAA National Geophysical Data Center Boulder, CO
Publisher: NOAA
Other_Citation_Details:
The vertical datum for the data is NAVD 88. The horizontal datum for the data is WGS 1984. The original cell-size is 1/3-arcsecond.
Online_Linkage: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/3983
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: south_padre_tx_1-3_arc-second_navd88.asc
Source_Contribution:
Full dataset used to replace overlaping data in western_gom_crm_v1.
Source_Information:
Source_Citation:
Citation_Information:
Originator: L.A. Taylor
Originator: B.W. Eakins
Originator: K.S. Carignan
Originator: R.R. Warnken
Originator: D.C. Schoolcraft
Originator: G.F. Sharman
Publication_Date: 2008
Title: Cape Hatteras, NC 1/3 arc-second MHW DEM
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: NOAA National Geophysical Data Center Boulder, CO
Publisher: NOAA
Other_Citation_Details:
The vertical datum for the data is the mean height of water (MHW). The horizontal datum for the data is WGS 1984. The original cell-size is 1/3-arcsecond. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/296
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: cape_hatteras.asc
Source_Contribution:
The cape_hatteras data were used to replace se_atl_crm_v1 for an area outlined by a feature in DEM_artifacts.shp covering the upper Gulf of Maine in one feature south of Cape Hatteras, North Carolina.
Source_Information:
Source_Citation:
Citation_Information:
Originator: M.R. Love
Originator: C.J. Amante
Originator: B.W. Eakins
Originator: L.A. Taylor
Publication_Date: 2012
Title: Northern Gulf Coast, LA/MS/FL/AL 1 arc-second NAVD 88 DEM
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Boulder, CO
Publisher: U.S. Dept. of Commerce
Other_Citation_Details:
The vertical datum for the data is NAVD 88. The horizontal datum for the data is WGS 1984. The original cell-size is 1-arcsecond.
Online_Linkage: http://www.ngdc.noaa.gov/dem/squareCellGrid/download/720
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: northern_gulf_coast_navd_88.grd
Source_Contribution:
Full dataset was used to replace overlapping data in central_gom_crm_v1 except for areas in Vdatum_NGulfCoast indicated with type=Replace in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: E.R. Twomey
Originator: R.P. Signell
Publication_Date: 2013
Title:
Construction of a 3-Arcsecond Digital Elevation Model for the Gulf of Maine
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Other_Citation_Details:
The vertical datum for the data is NAVD 88. The horizontal datum for the data is NAD 1983. The original cell-size is 3-arcseconds.
Online_Linkage: http://pubs.usgs.gov/of/2011/1127/
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: gom03_v1_0.tif
Source_Contribution:
The gom03_v1_0.tif data were used to replace ne_atl_crm_v1 for areas outlined by two features in DEM_artifacts.shp covering the upper Gulf of Maine in one feature and Martha's Vinyard and Nantucket Islands in the other.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Northeast Atlantic
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas01/grddas01.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: ne_atl_crm_v1.flt
Source_Contribution:
All of the ne_atl_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. ne_atl_crm_v1 data were not directly used for areas with merging type artifacts or where other elevation data were used to replace ne_atl_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Southeast Atlantic
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas02/grddas02.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: se_atl_crm_v1.flt
Source_Contribution:
All of the se_atl_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. se_atl_crm_v1 data were not directly used for areas with merging type artifacts or where other elevation data were used to replace se_atl_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Florida and Eastern Gulf of Mexico
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas03/grddas03.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: fl_east_gom_crm_v1.flt
Source_Contribution:
No significant artifacts were found in fl_east_gom_crm_v1.flt. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Central Gulf of Mexico
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas04/grddas04.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: central_gom_crm_v1.flt
Source_Contribution:
All of the central_gom_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. central_gom_crm_v1 data were not directly used for areas with merging type artifacts or where other elevation data were used to replace central_gom_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Western Gulf of Mexico
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas05/grddas05.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: western_gom_crm_v1.flt
Source_Contribution:
All of the western_gom_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. western_gom_crm_v1 data were not directly used for areas with merging type artifacts or where other elevation data were used to replace western_gom_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Southern California Version 2
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 1-arcsecond. Note that the data files for this reference were a zipped directory containing .grd format rasters, but the linkage incorrectly indicated the data were in NetCDF format on the retrieval date. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas06/grddas06v2.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: southern_calif_crm_v2_netcdf.zip
Source_Contribution:
All of the .grd files in the .zip were merged into a topography and bathymetry product. Elevations less than or equal to 0 meters were used to create the final elevation model.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Central Pacific
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas07/grddas07.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: central_pacific_crm_v1.flt
Source_Contribution:
All of the central_pacific_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. central_pacific_crm_v1 data were not directly used for areas with merging or channel type artifacts nor where other elevation data were used to replace central_pacific_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA National Centers for Environmental Information
Publication_Date: unknown
Title: US Coastal Relief Model - Northwest Pacific
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place:
National Oceanic and Atmospheric Administration National Centers for Environmental Information
Publisher: NOAA
Other_Citation_Details:
The vertical datum was not specified in the creation of the dataset from multiple bathymetric products with variable tidal datums. The large spatial resolution leads to cells that span elevations equivalient to the datum uncertainty introduced by the tidal range, making the specification of a vertical datum from a mean tidal position impossible. The horizontal datum is NAD 1983. The original cell size is 3-arcseconds. Original disclaimer: "THIS DATA IS NOT TO BE USED FOR NAVIGATION. Although these data are of high quality and useful for planning and modeling purposes, they do not necessarily reflect current conditions, nor do they depict data which is on a nautical chart. For navigation please refer to the NOS nautical chart series."
Online_Linkage: http://www.ngdc.noaa.gov/mgg/coastal/grddas08/grddas08.htm
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20160601
Source_Currentness_Reference: retrieval date
Source_Citation_Abbreviation: nw_pacific_crm_v1.flt
Source_Contribution:
All of the nw_pacific_crm_v1 dataset was used for outlining artifacts in DEM_artfacts.shp. Only cells with an elevation equal to or less than 0 meters in the dataset datum were retained in the final topographic and bathymetry product. nw_pacific_crm_v1 data were not directly used for areas with merging or channel type artifacts nor where other elevation data were used to replace nw_pacific_crm_v1 data, outlined in DEM_artifacts.shp.
Source_Information:
Source_Citation:
Citation_Information:
Originator: United States Geological Survey
Publication_Date: 2013
Title: U.S. Geological Survey national elevation dataset
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: http://ned.usgs.gov/
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: individual NED tiles
Source_Contribution:
1 by 1 degree seamless sections of the National Elevation Dataset (NED) were downloaded for U.S. coastal topography included within the potential area required for groundwater models of coastal areas. Elevations greater than 8 meters in the final product are all from NED data. Elevations between 8 and 0 meters may be NED values but the source depends on the availability of bathymetry for each grid cell.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Canadian Hydrographic Service
Publication_Date: 2014
Title: 500m Bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Canadian Hydrographic Service
Publisher: Fisheries and Oceans Canada
Other_Citation_Details:
The horizontal datum for the dataset is global Mercator (Mercator_1SP,EPSG 9804). The vertical datum is "Unknown". The cell size is 500 meters. Additional information can be found in the dataset metadata (
http://geoportal.gc.ca/data/500m_Bathymetry/092G_Metadata.xml). DISCLAIMER: "This product has been produced by or for the U.S. Geological Survey and includes data provided by the Canadian Hydrographic Service of the Department of Fisheries and Oceans. The incorporation of data sourced from the Canadian Hydrographic Service of the Department of Fisheries and Oceans within this product does NOT constitute an endorsement by the Canadian Hydrographic Service or the Department of Fisheries and Oceans of this product."
Type_of_Source_Media: Raster
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2014
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 092G.bag
Source_Contribution:
This dataset was used to supply values where the merged CRM and NED datasets were missing bathymetry values.
Process_Step:
Process_Description:
Manually outlined and delineated features where the DEMs in this analysis required additional steps to correct artifacts using ArcGIS 10.3. The elevations were checked primarily by using a color scheme that ranged from slightly below sea level to slightly above sea level to accentuate the elevations in the coastal zones. For the U.S. east coast, the range used was primarily -10 m to 10 m relative to zero in the datum of the source data. For the U.S. west coast, -20 m to 20 m and -10 m to 50 m were used to check both coastal zones and as well as deeply incised channels.
Process_Date: 2016
Source_Produced_Citation_Abbreviation: DEM_artifacts.shp
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Kevin M. Befus
Contact_Organization: University of Wyoming
Contact_Address:
Address_Type: mailing and physical
Address: University of Wyoming
Address: 1000 E. University Ave.
Address: Dept. 3295
City: Laramie
State_or_Province: WY
Postal_Code: 82071
Country: USA
Contact_Voice_Telephone: 307-766-2390
Contact_Electronic_Mail_Address: kbefus@uwyo.edu
Contact_Instructions:
Kevin is currently with the University of Wyoming as an Assistant Professor in the Civil and Architectural Engineering Department. His contact information has been updated to reflect this.
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200807
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
