gov.noaa.nmfs.inport:24303
eng
UTF8
dataset
Alaska Fisheries Science Center
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
http://www.afsc.noaa.gov
WWW:LINK-1.0-http--link
Website
Website for this organization
information
0700-1700 Pacific Time
resourceProvider
Prescott, Megan
megan.prescott@noaa.gov
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry
AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry
2015
publication
NOAA/NMFS/EDM
24303
https://www.fisheries.noaa.gov/inport/item/24303
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
Prescott, Megan
megan.prescott@noaa.gov
originator
http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip
WWW:LINK-1.0-http--link
Citation URL
Online Resource
download
mapDigital
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 Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum.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.
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.
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.
completed
Prescott, Megan
megan.prescott@noaa.gov
pointOfContact
Prescott, Megan
megan.prescott@noaa.gov
custodian
notPlanned
Alaska
North Pacific Ocean
Norton Sound
bathymetry
grid
theme
DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Groundfish Assessment Program
project
InPort
otherRestrictions
Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/GAP/Prescott: Norton Sound Bathymetry [Data Date Range], https://www.fisheries.noaa.gov/inport/item/24303.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: These data are not to be used for navigation.
otherRestrictions
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.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
24303
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/24303.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
elevation
imageryBaseMapsEarthCover
oceans
Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.2.2
-170
-160.77
62.75
65.62
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.
| Currentness: observed
1898
2010
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.
Alaska Fisheries Science Center
(206) 526-4000
(206) 526-4004
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
afsc.webmaster@noaa.gov
https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
WWW:LINK-1.0-http--link
Alaska Fisheries Science Center Website
AKFSC Home Page
information
0700-1700 Pacific Time
distributor
https://www.ncei.noaa.gov
WWW:LINK-1.0-http--link
https://www.ncei.noaa.gov
download
http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip
WWW:LINK-1.0-http--link
http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip
download
dataset
Completeness Report
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
unknown
otherRestrictions
Use Constraints: These data are not to be used for navigation.