AFSC/RACE/GAP/Zimmermann: Cook Inlet Shoreline
We assembled 1.4 million National Ocean Service (NOS) bathymetric soundings from 98 lead-line and single-beam echosounder hydrographic surveys conducted from 1910 to 1999 in Cook Inlet, 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 Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum. There were six areas where these older surveys were superseded by compilations of reduced-resolution multibeam surveys. We digitized 12,000 features, such as rocky reefs, kelp beds, rocks and islets, adding them to what was originally available, and creating the most thorough source (n = 18,000) of these typically shallow, inshore features. We also digitized 2,418 km of the mainland and 529 km of island shoreline, generally at a resolution of 1:20,000, and digitized 9,271 verbal surficial sediment descriptions from the smooth sheets. The depth surface, shoreline, inshore features, and sediment data sets are mostly produced at a scale of 1:20,000.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "Zimmermann, Mark",
"@type": "vcard:Contact",
"hasEmail": "mailto:mark.zimmermann@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | We assembled 1.4 million National Ocean Service (NOS) bathymetric soundings from 98 lead-line and single-beam echosounder hydrographic surveys conducted from 1910 to 1999 in Cook Inlet, 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. There were six areas where these older surveys were superseded by compilations of reduced-resolution multibeam surveys. We digitized 12,000 features, such as rocky reefs, kelp beds, rocks and islets, adding them to what was originally available, and creating the most thorough source (n = 18,000) of these typically shallow, inshore features. We also digitized 2,418 km of the mainland and 529 km of island shoreline, generally at a resolution of 1:20,000, and digitized 9,271 verbal surficial sediment descriptions from the smooth sheets. The depth surface, shoreline, inshore features, and sediment data sets are mostly produced at a scale of 1:20,000. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "NOAA Data Management Plan (DMP)",
"mediaType": "placeholder/value",
"description": "NOAA Data Management Plan for this record on InPort.",
"downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/22181.pdf",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"mediaType": "placeholder/value",
"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Full Metadata Record",
"mediaType": "placeholder/value",
"description": "View the complete metadata record on InPort for more information about this dataset.",
"downloadURL": "https://www.fisheries.noaa.gov/inport/item/22181",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nmfs.inport:22181 |
| issued | 2014-04-01T00:00:00.000+00:00 |
| keyword |
[
"Alaska",
"Cook Inlet",
"North Pacific Ocean",
"bathymetry",
"point",
"DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Groundfish Assessment Program"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/22181 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2014-04-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Alaska Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/22181.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -148.9,58.8,-154.3,61.6 |
| temporal | 1910-01-01T00:00:00+00:00/1992-01-01T00:00:00+00:00 |
| title | AFSC/RACE/GAP/Zimmermann: Cook Inlet Shoreline |
