AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry
Alaska Fisheries Science Center
Data Set
(DS)
| ID: 24303
| Published / External
Created: 2015-04-06
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Last Modified: 2024-01-15
Project (PRJ) | ID: 22291
ID: 24303
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry |
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Short Name | AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2015 |
* » Abstract |
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: http://www.ngdc.noaa.gov), 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 Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum.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. |
* Purpose |
The purpose for creating this data set was to provide the best available bathymetry and inshore features of Norton Sound for predictive, geospatial modeling of marine resources. |
Notes |
Loaded by FGDC Metadata Uploader, batch 5766, 04-06-2015 12:50 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) |
Other Citation Details | |
• Supplemental Information |
This bathymetry grid was created in several steps. First, the bathymetry point data and inshore smooth sheet features, such as rocks and islets, were compared to the source documents - the smooth sheets - and corrected or digitized. Second, single-beam echobeam data was added to fill in gaps in the smooth sheet coverage. Multibeam surveys were then added, supercededing older smooth sheet data. These data points then combined with shoreline data points and were used to create a Triangulated Irregular Network (TIN). The TIN was converted into a grid (raster with 100 meter square pixels). Finally, the grid was trimmed by the shoreline, removing any points that fell on land. |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
ISO 19115 Topic Category | imageryBaseMapsEarthCover |
ISO 19115 Topic Category | oceans |
None | Alaska |
None | bathymetry |
None | grid |
None | North Pacific Ocean |
None | Norton Sound |
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Physical Location
• » Organization | Alaska Fisheries Science Center |
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• » City | Seattle |
• » State/Province | WA |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | Map (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
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Distribution Liability | |
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
* » Support Role | Data Steward |
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* » Date Effective From | 2015 |
Date Effective To | |
Person | Prescott, Megan |
Email Address | megan.prescott@noaa.gov |
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Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2015 |
Date Effective To | |
Organization | Alaska Fisheries Science Center (AFSC) |
Address |
7600 Sand Point Way N.E., Building 4 Seattle, WA 98115 USA |
Email Address | afsc.webmaster@noaa.gov |
Phone | (206) 526-4000 |
Fax | (206) 526-4004 |
Mobile | |
URL | https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center |
Business Hours | 0700-1700 Pacific Time |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2015-04-06 |
Date Effective To | |
Person | Prescott, Megan |
Email Address | megan.prescott@noaa.gov |
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Contact Instructions |
* » Support Role | Originator |
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* » Date Effective From | 2015-04-06 |
Date Effective To | |
Person | Prescott, Megan |
Email Address | megan.prescott@noaa.gov |
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* » Support Role | Point of Contact |
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* » Date Effective From | 2015 |
Date Effective To | |
Person | Prescott, Megan |
Email Address | megan.prescott@noaa.gov |
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Extents
Currentness Reference | observed |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -170 |
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* » E° Bound | -160.77 |
* » N° Bound | 65.62 |
* » S° Bound | 62.75 |
* » Description |
Norton Sound, Alaska, ranging geographically west to the eastern point of St. Lawrence Island, southeast to the Yukon River delta and north along the Seward Peninsula around to the point of Cape Prince of Wales. |
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* » Time Frame Type | Range |
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* » Start | 1898 |
End | 2010 |
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Access Information
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Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
unknown |
• » Data Access Constraints |
These data are not to be used for navigation. |
• Data Use Constraints |
These data are not to be used for navigation. These data are not to be used for navigation. We consider this smooth sheet bathymetry, feature, shoreline, and sediment compilation a fairly complete first draft. |
Metadata Access Constraints | |
Metadata Use Constraints |
These data are not to be used for navigation. |
Distribution Information
Start Date | |
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» Download URL | http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip |
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» Download URL | https://www.ncei.noaa.gov |
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URLs
URL | http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip |
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URL Type | Online Resource |
File Resource Format | ZIP |
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Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.2.2 |
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Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum. |
Conceptual Consistency |
not applicable |
» Quality Control Procedures Employed |
Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum. |
Data Management
» Have Resources for Management of these Data Been Identified? | No |
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» 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 |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» 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
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Catalog Details
Catalog Item ID | 24303 |
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Metadata Record Created By | Nancy Roberson |
Metadata Record Created | 2015-04-06 12:49+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2024-01-15 12:08+0000 |
Metadata Record Published | 2016-05-18 |
Owner Org | AFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2016-05-18 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2017-05-18 |
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