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Short Citation:
Alaska Fisheries Science Center, 2023: AFSC/RACE/GAP/Prescott: Norton Sound Sediments,

Item Identification

Title: AFSC/RACE/GAP/Prescott: Norton Sound Sediments
Short Name: AFSC/RACE/GAP/Prescott: Norton Sound Sediments
Status: Completed
Publication Date: 2015

We assembled approximately 230,000 National Ocean Service (NOS) bathymetric soundings from 39 lead-line and single-beam echosounder hydrographic surveys conducted from 1896 to 2005 in Norton Sound, Alaska. These bathymetry data are available from the National Geophysical Data Center (NGDC:, which archives and distributes data that were originally collected by the NOS and others. While various bathymetry data have been downloaded previously from NGDC, compiled, and used for a variety of projects, our effort differed in that we compared and corrected the digital bathymetry by studying the original analog source documents - digital versions of the original survey maps, called smooth sheets. Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum. We incorporated 3 multibeam surveys, and added an additional 6,992 single-beam soundings from the 2010 Northern Bering Sea bottom trawl survey to fill in where smooth sheet data was lacking. We proofed and digitized 312 cartographic features, comprised mostly of rocks and islets and also digitized 4,305 verbal sediment descriptors, and digitized or adapted 2,142 km of mainland and 837 km of island shoreline.


The purpose for creating this data set was to provide the best available sediment information of Norton Sound for predictive, geospatial modeling of marine resources.


Loaded by FGDC Metadata Uploader, batch 5769, 04-06-2015 13:48

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Spatial Reference Information (FGDC:spref),

- Spatial Data Organization Information (FGDC:spdoinfo)

- Lineage (FGDC:lineage)


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category
ISO 19115 Topic Category
None Alaska
None North Pacific Ocean
None Norton Sound
None point
None sediment

Physical Location

Organization: Alaska Fisheries Science Center
City: Seattle
State/Province: WA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: digital point data
Data Set Credit: These bathymetry data were proofed, edited and digitized by Megan Prescott and Mark Zimmermann.Funding for much of the work, as part of a Groundfish Assessment Program (GAP), was provided by NOAA's Essential Fish Habitat (EFH), Habitat and Ecological Processes Research (HEPR) through the Alaska NMFS Regional Office. Smooth sheet data was obtained from the Nation Geophysical Data Center (NGDC) website.

Support Roles

Data Steward

CC ID: 247945
Date Effective From: 2015
Date Effective To:
Contact (Person): Prescott, Megan
Email Address:


CC ID: 247946
Date Effective From: 2015
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
Business Hours: 0700-1700 Pacific Time

Metadata Contact

CC ID: 196666
Date Effective From: 2015-04-06
Date Effective To:
Contact (Person): Prescott, Megan
Email Address:


CC ID: 196667
Date Effective From: 2015-04-06
Date Effective To:
Contact (Person): Prescott, Megan
Email Address:

Point of Contact

CC ID: 247944
Date Effective From: 2015
Date Effective To:
Contact (Person): Prescott, Megan
Email Address:


Currentness Reference: observed

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 196665
W° Bound: -170
E° Bound: -160.77
N° Bound: 65.62
S° Bound: 62.75

Extent Group 1 / Time Frame 1

CC ID: 196664
Time Frame Type: Range
Start: 1898
End: 2005

Access Information

Security Class: Unclassified
Data Access Procedure:


Data Access Constraints:

These data are not to be used for navigation.

Data Use Constraints:

These data are not to be used for navigation. We consider this smooth sheet bathymetry, feature, and sediment compilation a fairly complete first draft. Verbal sediment descriptions were digitized from the smooth sheets. Short abbreviations such as "S" and "M" were translated into their full names of "Sand" and "Mud". Position of the sediment points were centered on the written description.

Metadata Use Constraints:

These data are not to be used for navigation.

Distribution Information

Distribution 1

CC ID: 247943
Download URL:

Distribution 2

CC ID: 247942
Download URL:



CC ID: 196669
URL Type:
Online Resource
File Resource Format: ZIP

Technical Environment


Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.2.2

Data Quality

Completeness Report:

We digitized this data set from smooth sheets aligned to a common, modern datum (NAD 1983 HARN).

Conceptual Consistency:

not applicable

Quality Control Procedures Employed:


Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: Yes
Approximate Delay Between Data Collection and Dissemination: Unknown
Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.


Lineage Statement:


Catalog Details

Catalog Item ID: 24306
GUID: gov.noaa.nmfs.inport:24306
Metadata Record Created By: Nancy Roberson
Metadata Record Created: 2015-04-06 13:47+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-05-30 18:09+0000
Metadata Record Published: 2016-05-18
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2016-05-18
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2017-05-18