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Short Citation:
Office for Coastal Management, 2023: Ocean Sediment Thickness Contours,

Item Identification

Title: Ocean Sediment Thickness Contours
Status: Completed
Publication Date: 2013-10

Ocean sediment thickness contours in 200 meter intervals for water depths ranging from 0 - 18,000 meters. These contours were derived from a global sediment thickness grid distributed by the National Geophysical Data Center (NGDC). The NGDC grid was compiled from various existing sediment thickness maps and drilling cores, and has a cell resolution of 5 arc seconds. Sediment thickness data is typically acquired through two methods. Seismic (or sub-bottom) profile technologies rely on powerful pulses of low-frequency sound which penetrate the substrate and return information about substrate thickness, character, and stratification. The data are collected along transect lines and require interpolation to create comprehensive maps. Sediment thickness is also determined by direct measurement through coring, which provides more detailed information but only at discrete sites. Coring data can also be interpolated to form area maps, and to help interpret the seismic data.


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.


Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
ISO 19115 Topic Category geoscientificInformation
ISO 19115 Topic Category oceans
None contours
None marine sediments
None marine spatial planning
None ocean energy planning
None seafloor sediment
None sediment thickness

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
None National
None United States

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

Data Set Credit: Bureau of Ocean Energy Management, NOAA Office for Coastal Management

Support Roles

Point of Contact

CC ID: 653360
Date Effective From: 2013-10
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 653365
W° Bound: -179.999989
E° Bound: 179.999989
N° Bound: 74.208333
S° Bound: 0.041667

Extent Group 1 / Time Frame 1

CC ID: 653364
Time Frame Type: Discrete
Start: 2013-10

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Use Constraints:

For coastal and ocean planning

Distribution Information

Distribution 1

CC ID: 1121350
Download URL:
Description: Data Registry

Activity Log

Activity Log 1

CC ID: 653379
Activity Date/Time: 2015-12-18

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 653378
Activity Date/Time: 2017-11-14

Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using '' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 717468
Activity Date/Time: 2018-02-08

Partial upload of Positional Accuracy fields only.

Data Quality


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.



Sediment Thickness Contours

CC ID: 653351
Contact Name: NOAA National Geophysical Data Center; Whittaker, Joanne, Alexey Goncharov, Simon Williams, R. Dietmar Muller, German Leitchenkov
Publish Date: 2003-01-01
Extent Type: Discrete
Extent Start Date/Time: 2013-10
Citation URL:
Source Contribution:

Geotiff image converted to vector contours | Type of Source Media: online

Process Steps

Process Step 1

CC ID: 653352

Go to:

And download

Import as a raster into a file geodatabase

Project into NAD 83,

Clip the raster so that it shows North America

Contour using ArcToolBox|Spatial Analyst Tools|Surface|Contour, selecting 200 as the contour value

Repair Geometry using ArcToolBox|Data Management Tools|Feature|Repair Geometry

Delete all superfluous fields.

Reproject data to WGS 84 Auxiliary Sphere

Process Date/Time: 2013-10-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity OceanSedimentThicknessContours

Catalog Details

Catalog Item ID: 48906
GUID: gov.noaa.nmfs.inport:48906
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 15:56+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-02-08
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-02-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-02-08