Bathymetry Digital Elevation Model
Data Set (DS) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:66106 | Updated: May 30, 2023 | Published / External
Summary
Short Citation
Office for Coastal Management, 2024: Bathymetry Digital Elevation Model, https://www.fisheries.noaa.gov/inport/item/66106.
Full Citation Examples
This Digital Elevation Model (DEM) created for the Ocean Reports application is a combination of the NCEI Coastal Relief Model (CRM) and the GEBCO (2014) 1 arc-minute 2-dimensional bathymetric datasets. All components of the two models were resampled to 3 arc-seconds (as needed) and then mosaicked together to form the final output grid. The CRM integrates offshore bathymetry with land topography into a seamless representation of the coast. The CRM has a 3 arc-second resolution, except Alaska (24 arc-seconds), and spans the U.S. East and West coasts, the northern coast of the Gulf of Mexico, Puerto Rico, Hawaii, and Alaska, reaching out to and beyond the continental slope. Land and water portions of the CRM were used to construct the final DEM. The GEBCO data has a 1 arc-minute resolution and was supplemented in deeper portions of the ocean where the CRM data are not available. Where overlap occurred, CRM data were given precedence over GEBCO data. It should be noted that these are the best available data at the spatial extent needed (the entire U.S. Exclusive Economic Zone), but higher-resolution digital elevation models may be available for local or regional areas.
Distribution Information
-
Ocean Reports
For coastal and ocean planning
Controlled Theme Keywords
elevation, environment, ENVIRONMENTAL GOVERNANCE/MANAGEMENT, oceans, planningCadastre
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-179.999989° W,
179.999989° E,
74.70875° N,
13.999263° S
Item Identification
| Title: | Bathymetry Digital Elevation Model |
|---|---|
| Status: | Completed |
| Abstract: |
This Digital Elevation Model (DEM) created for the Ocean Reports application is a combination of the NCEI Coastal Relief Model (CRM) and the GEBCO (2014) 1 arc-minute 2-dimensional bathymetric datasets. All components of the two models were resampled to 3 arc-seconds (as needed) and then mosaicked together to form the final output grid. The CRM integrates offshore bathymetry with land topography into a seamless representation of the coast. The CRM has a 3 arc-second resolution, except Alaska (24 arc-seconds), and spans the U.S. East and West coasts, the northern coast of the Gulf of Mexico, Puerto Rico, Hawaii, and Alaska, reaching out to and beyond the continental slope. Land and water portions of the CRM were used to construct the final DEM. The GEBCO data has a 1 arc-minute resolution and was supplemented in deeper portions of the ocean where the CRM data are not available. Where overlap occurred, CRM data were given precedence over GEBCO data. It should be noted that these are the best available data at the spatial extent needed (the entire U.S. Exclusive Economic Zone), but higher-resolution digital elevation models may be available for local or regional areas. |
| Purpose: |
To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the National Environmental Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act. |
| Supplemental Information: |
Bureau Code: 006:48, Program Code: 006:055 |
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 |
environment
|
| ISO 19115 Topic Category |
oceans
|
| ISO 19115 Topic Category |
planningCadastre
|
| UNCONTROLLED | |
| None | coastal |
| None | planning |
| None | renewable energy |
Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
| UNCONTROLLED | |
| None | Exclusive Economic Zone |
| None | Outer Continental Shelf |
| None | Territorial Sea |
| None | United States of America |
Physical Location
| City: | Charleston |
|---|---|
| State/Province: | SC |
Data Set Information
| Data Set Scope Code: | Data Set |
|---|---|
| Maintenance Frequency: | As Needed |
| Data Presentation Form: | Map (digital) |
| Distribution Liability: |
https://www.marinecadastre.gov/about/disclaimer.html |
| Data Set Credit: | NOAA National Centers for Coastal Ocean Science, NOAA Office for Coastal Management, NOAA Office of Coast Survey, International Hydrographic Organization, General Bathymetric Chart of the Oceans, Intergovernmental Oceanographic Commission, United Nations Educational, Scientific and Cultural Organization |
Support Roles
Point of Contact
| Date Effective From: | 2018-06 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
| Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address: | coastal.info@noaa.gov |
| Phone: | (843) 740-1202 |
| URL: | https://coast.noaa.gov |
Extents
| Currentness Reference: | Publication Date |
|---|
Extent Group 1
Extent Group 1 / Geographic Area 1
| W° Bound: | -179.999989 | |
|---|---|---|
| E° Bound: | 179.999989 | |
| N° Bound: | 74.70875 | |
| S° Bound: | 13.999263 |
Access Information
| Security Class: | Unclassified |
|---|---|
| Data Use Constraints: |
For coastal and ocean planning |
Distribution Information
Distribution 1
| Download URL: | https://marinecadastre.gov/downloads/data/mc/BathymetryDEM.zip |
|---|---|
| Distributor: |
Distribution 2
| Download URL: | https://marinecadastre.gov/oceanreports/ |
|---|---|
| Distributor: | |
| Description: |
Ocean Reports |
Technical Environment
| Description: |
Microsoft Windows, ArcGIS Pro |
|---|
Data Quality
| Accuracy: |
Untested |
|---|---|
| Horizontal Positional Accuracy: |
Compiled to meet 10 meters horizontal accuracy at 95% confidence interval |
| Completeness Report: |
Untested |
| Conceptual Consistency: |
These data are logically consistent |
Lineage
Sources
NOAA's Coastal Relief Model (CRM) and GEBCO Gridded Bathymetric Data
| Contact Name: | NOAA NCEI and GEBCO |
|---|---|
| Extent Type: | Discrete |
| Extent Start Date/Time: | 2018-08-01 |
| Citation URL: | https://www.gebco.net/data_and_products/gridded_bathymetry_data/ |
| Citation URL Name: | Source Online Linkage |
| Citation URL Description: |
URL where the source data were originally accessed. |
| Source Contribution: |
Digital Elevation Model (DEM) for U.S. Exclusive Economic Zone (EEZ) |
Process Steps
Process Step 1
| Description: |
(1) Bathymetry grids were downloaded from each of the data sources in NetCDF format. (2) The GEBCO and Alaska CRM grids were resample to 3 arc-seconds to match the remaining CRM regional grids. During resampling the GEBCO grid was broken up in to four equal parts (NE, NW, SE and SW) to reduce the memory load during processing. (3) CRM data that overlapped each of the four GEBCO parts were then blended on to the GEBCO data. CRM data was given priority over GEBCO data, where it was available. (4) The four sections (NE, NW, SE and SW) were then combined to create the final grid encompassing the region of interest. (5) File size: 12 GB (NetCDF received from Michael Coyne), converted to raster (40 gb), clipped to the EEZ and coastline file leaving a file size 16.4 gb in a file geodatabase for the US waters. However, these data must be converted to a GeoTiff for final delivery. (6) Projected data to WGS 1984 World Mercator (ID: 3395), and 7) Project to NAD83 GRS80 4269 |
|---|---|
| Process Date/Time: | 2018-08-01 00:00:00 |
Catalog Details
| Catalog Item ID: | 66106 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:66106 |
| Metadata Record Created By: | Brianna Key |
| Metadata Record Created: | 2021-12-21 21:39+0000 |
| Metadata Record Last Modified By: | SysAdmin InPortAdmin |
| Metadata Record Last Modified: | 2023-05-30 18:10+0000 |
| Metadata Record Published: | 2021-12-22 |
| Owner Org: | OCM |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2021-12-22 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2022-12-22 |