Short Citation:
Office for Coastal Management, 2019: Bathymetric Contours, https://inport.nmfs.noaa.gov/inport/item/54364.

Item Identification

Title: Bathymetric Contours
Short Name: BathymetricContours
Status: Completed
Publication Date: 2018-12-12
Abstract:

This layer contains bathymetric contours which provide the size, shape and distribution of underwater features. The contours are from zero to -100m with a contour every 10 meters, a -101m to -500m with contours every 25meters, and -501m+ with contours every 100m until all contours had been created for the DEM utilized. The DEM utilized was the Global Multi-Resolution Topography (GMRT) Synthesis which is a multi-resolution gridded global Digital Elevation Model (DEM) that includes cleaned processed ship-based multibeam sonar data at their full spatial resolution (~100m in the deep sea). This dataset has been projected into World Mercator.

Purpose:

To support coastal and ocean planning and other activities pursuant to the Energy Policy Act, Coastal Zone Management Act, Magnuson-Stevens Fishery Conservation and Management Act, National Environmental Policy Act, Rivers and Harbors Act and the Submerged Lands Act. This feature class represents contours of elevation under the water's surface known as Bathymetry Contours. This feature class contains contours from zero to -100m with a contour every 10 meters, a -101m to -500m with contours every 25 meters, and -501m+ with contours every 100m until all contours had been created for the utilized DEM.

Supplemental Information:

The native coordinate system for this layer is WGS 1984 World Mercator (ESPG: 3395). Please note: all MarineCadastre.gov data served by the NOAA Office for Coastal Management and hosted through Esri REST services are in the WGS 1984 Web Mercator Auxiliary Sphere (EPSG: 3857) projection.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Human Dimensions > Environmental Governance/Management
ISO 19115 Topic Category elevation
ISO 19115 Topic Category oceans
None Bathymetry
None Elevation
None Oceans
None USA

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America

Physical Location

City: North Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Distribution Liability:

NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

Data Set Credit: CREDIT: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) ORIGINATORS: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM);

Support Roles

Data Steward

CC ID: 790790
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Coastal Management, NOAA Office for
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202

Distributor

CC ID: 790791
Date Effective From: 2018-06
Date Effective To:
Contact (Organization): Office for Coastal Management (OCM)
Address: 2234 South Hobson Avenue
Charleston, SC 29405-2413
URL: https://www.coast.noaa.gov/

Metadata Contact

CC ID: 790793
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Coastal Management, NOAA Office for
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202

Point of Contact

CC ID: 790792
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Coastal Management, NOAA Office for
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 790796
W° Bound: -179.977287
E° Bound: 179.984439
N° Bound: 74.680439
S° Bound: -17.541414

Extent Group 1 / Time Frame 1

CC ID: 790795
Time Frame Type: Discrete
Start: 2018-05-10
Description:

ground condition

Access Information

Security Class: Unclassified
Data Use Constraints:

These data are intended for coastal and ocean use planning. Not for navigation. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. https://www.marinecadastre.gov/about/disclaimer.html.

Distribution Information

Distribution 1

CC ID: 794459
Download URL: ftp://ftp.coast.noaa.gov/pub/MSP/ORT/bathymetryContours.zip
File Name: bathymetryContours
File Type: Arc Geodatabase
Compression: Zip

Distribution 2

CC ID: 794460
Download URL: https://coast.noaa.gov/arcgis/rest/services/OceanReportingTool/OceanReports/MapServer
File Name: Ocean Reports Map Service
File Type: REST Service

URLs

URL 1

CC ID: 790788
URL: https://marinecadastre.gov/ort
Name: Ocean Reporting Tool
URL Type:
Online Resource
Description:

More information and online data visualization.

Technical Environment

Description:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1.5713

Data Quality

Accuracy:

No formal attribute accuracy test was conducted. The attributes in this dataset are believed to be accurate.

Horizontal Positional Accuracy:

Maximum scale of intended use is 1:80,000.

Completeness Report:

Spatial and attribute properties are believed to be complete, although attribute information has been simplified. Geometric thresholds from original data are preserved. No tests have been completed for exhaustiveness.

Conceptual Consistency:

These data are believed to be logically consistent. Geometry is topologically clean. During quality control, attributes were checked to ensure that they fell within the expected ranges or had expected/valid values. Text attribute values were checked for spelling and usage consistency. No topology tests were conducted.

Lineage

Sources

American Samoa (NEB_20m.asc.zip , OfuOlo_5m.asc.zip , Rose_40m.asc.zip, Swains_40m.asc.zip , Tau_5m.asc.zip, Tutuila_5m.asc.zip, Two_40m.asc.zip , Vailuluu_40m.asc.zip)

CC ID: 790781
Contact Name: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), NOAA IRC, NMFS / PIFSC / CRED / PIBHMC, GIS Data Steward
Extent Type: Discrete
Extent Start Date/Time: 2006-09-30
Citation URL: https://www.soest.hawaii.edu/pibhmc/cms/
Citation URL Name: Source Online Linkage
Citation URL Description:

URL where the source data were originally accessed.

Source Contribution:

Individual .asc files

GRMT DEM (USA & Territories to EEZ)

CC ID: 790780
Contact Name: NOAA Office for Coastal Management, Office for Coastal Management
Extent Type: Discrete
Extent Start Date/Time: 2018-05-01
Citation URL: https://www.gmrt.org/about/index.php#source
Citation URL Name: Source Online Linkage
Citation URL Description:

URL where the source data were originally accessed.

Source Contribution:

Digital Elevation Model (DEM) layer package

Process Steps

Process Step 1

CC ID: 790782
Description:

Merge the three contour data sets to make one Contours set for the America EEZ & dissolve based on the Contours interval. Utilize a shapefile of America & US Territories land areas only to erase sections of contours that might fall on land given the granularity of the Rasters. Call this contour set: USA_EEZContours_Clipped.

Process Date/Time: 2018-05-02 00:00:00
Non-InPort Process Contact (Deprecated): Quantum Spatial Inc, E-GIS Data Manager
Non-InPort Process Contact Phone (Deprecated): (727) 576-9500

Process Step 2

CC ID: 790783
Description:

Utilized the Smooth Line (Cartography) Tool with the PAEK algorithm to calculate a smoothed line that will not pass through the input line vertices at a .1 Decimal Degree smoothing tolerance & preserving endpoints for closed lines to create an enhanced cartographic product for viewing.

Process Date/Time: 2018-05-11 00:00:00
Non-InPort Process Contact (Deprecated): Quantum Spatial Inc, E-GIS Data Manager
Non-InPort Process Contact Phone (Deprecated): (727) 576-9500

Process Step 3

CC ID: 790784
Description:

Gather individual American Samoa .asc files, set proper projections for each file, merge American Samoa files to one Raster, project into Mercator. Utilize Raster to Polygon to create an exact area of the American Samoa Raster to cut out of EEZ_DEM contours. Utilize the contour tool (spatial analyst) & create three data sets, 1. zero to -100 creating a contour every 10 meters, 2. -101 to -500 with contours every 25meters, 3. -501+ with contours every 100m. Remove any contours that create that are not within the designated layer by using the select by attribute in the Attribute Table & selecting only the contours you want to keep, export the data as a new shapefile. Merge the three contour data sets to make one Contour set & dissolve based on the Contours interval, call layer American Samoa Contours.

Process Date/Time: 2018-05-03 00:00:00
Non-InPort Process Contact (Deprecated): Quantum Spatial Inc, E-GIS Data Manager
Non-InPort Process Contact Phone (Deprecated): (727) 576-9500

Process Step 4

CC ID: 790785
Description:

Download GRMT DEM of all USA & Territory areas to the EEZ & mosaic together to form one EEZ_DEM. Utilize ArcGIS spatial analyst - contour tool & create three data sets, 1. zero to -100 creating a contour every 10 meters, 2. -101 to -500 with contours every 25meters, 3. -501+ with contours every 100m. Remove any contours that are created that are not within the designated layers by using the select by attribute in the Attribute Table & selecting only the contours you want to keep, export the data as a new shapefile.

Process Date/Time: 2018-05-01 00:00:00
Non-InPort Process Contact (Deprecated): Quantum Spatial Inc, E-GIS Data Manager
Non-InPort Process Contact Phone (Deprecated): (727) 576-9500

Process Step 5

CC ID: 790786
Description:

From the USA_EEZContours_Clipped utilize the Erase tool using the American Samoa Raster Polygon. This will remove any of the contours that were created previously that are at a lower detail existing where the American Samoa Contours will exist. Merge the American Samoas Contours into the EEZ_DEM contours & Dissolve by Contour then name the resulting contour shapefile: Elevation_Bathymetry. Label all the features by contour with a mask for increased visibility, add scale range to not show when zoomed out past 1:15million (min scale).

Process Date/Time: 2018-05-04 00:00:00
Non-InPort Process Contact (Deprecated): Quantum Spatial Inc, E-GIS Data Manager
Non-InPort Process Contact Phone (Deprecated): (727) 576-9500

Child Items

Rubric scores updated every 15m

Type Title
Entity (ENT) Bathymetry Contours

Catalog Details

Catalog Item ID: 54364
Metadata Record Created By: Anna Verrill
Metadata Record Created: 2018-10-25 12:06+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-06-04 13:14+0000
Metadata Record Published: 2018-10-26
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-10-27