Eastern Canada 3 arc-second Bathymetric Digital Elevation Model
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title: Eastern Canada 3 arc-second Bathymetric Digital Elevation Model
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abstract: NOAA's National Centers for Environmental Information is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation.
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useLimitation: Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
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useLimitation: Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
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otherConstraints: Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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otherCitationDetails: NOAA's National Centers for Environmental Information (NCEI) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions to support inundation modeling and community mitigation and resiliency efforts. These integrated bathymetric-topographic DEMs support tsunami forecast and warning from NOAA's Tsunami Warning Centers. The DEMs are used in the MOST (Method of Splitting Tsunami) model developed by NOAA's Pacific Marine Environmental Laboratory (PMEL) to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including federal and academia data archived at NCEI, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Depending on the user requirements and available data, grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).
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title: Bathymetric Digital Elevation Model of Eastern Canada: Procedures, Data Sources, and Analysis
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useLimitation: These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.
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protocol: ESRI:ArcGIS
name: Digital Elevation Models Mosaic (Individual DEMs)
description: An image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information. Either individual DEMs or small subsets can be accessed through this service.
function: (CI_OnLineFunctionCode) search
role: (CI_RoleCode) publisher
abstract: A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Centers for Environmental Information (NCEI). NCEI builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. Layers available in the map service: Layers 1-4: DEMs by Category (includes various DEMs, both hosted at NCEI, and elsewhere on the web); Layers 6-11: NCEI DEM Projects (DEMs hosted at NCEI, color-coded by project); Layer 12: All NCEI Bathymetry DEMs (All bathymetry or bathy-topo DEMs hosted at NCEI).
pointOfContact: (CI_ResponsibleParty)
individualName: NCEI GIS Team
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
address: (CI_Address)
electronicMailAddress: ncei.gis@noaa.gov
role: (CI_RoleCode) pointOfContact
descriptiveKeywords: (MD_Keywords)
keyword: DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
keyword: DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
keyword: DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
type: (MD_KeywordTypeCode) theme
thesaurusName: (CI_Citation)
title: Global Change Master Directory (GCMD) Service Keywords
date: (CI_Date)
date: 2020-01-09
dateType: (CI_DateTypeCode) publication
edition: 9.1
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
name: GCMD Keyword Forum Page
description: Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. 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
function: (CI_OnLineFunctionCode) information
role: (CI_RoleCode) custodian
resourceConstraints: (MD_Constraints)
useLimitation: These data not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: https://www.nauticalcharts.noaa.gov.
serviceType:
LocalName: ArcGIS Feature Service
serviceTypeVersion: 11.0
extent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
extentTypeCode: 1
westBoundLongitude: -180
eastBoundLongitude: 180
southBoundLatitude: -90
northBoundLatitude: 90
couplingType: (SV_CouplingType) tight
containsOperations: (SV_OperationMetadata)
operationName: ArcGIS Server REST endpoint for feature service
DCP: (unknown)
connectPoint: (CI_OnlineResource)
linkage: https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer
protocol: HTTPS
applicationProfile: ESRI Feature Service REST Specification
name: NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service
description: REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service
function: (CI_OnLineFunctionCode) search
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distributionInfo: (MD_Distribution)
distributionFormat: (MD_Format)
name: netCDF
version: 4 Classic
distributor: (MD_Distributor)
distributorContact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
positionName: DEM Information
contactInfo: (CI_Contact)
address: (CI_Address)
electronicMailAddress: dem.info@noaa.gov
role: (CI_RoleCode) pointOfContact
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/dodsC/regional/eastern_canada_3_isl_2015.nc.html
protocol: OPeNDAP:OPeNDAP
name: OPeNDAP Dataset Access Form
description: OPeNDAP Dataset Access Form
function: (CI_OnLineFunctionCode) download
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/fileServer/regional/eastern_canada_3_isl_2015.nc
protocol: HTTPS
name: Download NetCDF File
description: Download NetCDF File
function: (CI_OnLineFunctionCode) download
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/wcs/regional/eastern_canada_3_isl_2015.nc?service=WCS&version=1.0.0&request=GetCapabilities
protocol: OGC:WCS
name: Web Coverage Service GetCapabilities
description: Web Coverage Service GetCapabilities
function: (CI_OnLineFunctionCode) information
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/wms/regional/eastern_canada_3_isl_2015.nc?service=WMS&version=1.3.0&request=GetCapabilities
protocol: OGC:WMS
name: Web Map Service GetCapabilities
description: Web Map Service GetCapabilities
function: (CI_OnLineFunctionCode) information
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/ncss/regional/eastern_canada_3_isl_2015.nc/dataset.html
protocol: HTTPS
name: Download a subset of the NetCDF
description: Download a subset of the NetCDF
function: (CI_OnLineFunctionCode) download
transferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://www.ngdc.noaa.gov/thredds/ncml/regional/eastern_canada_3_isl_2015.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Feastern_canada_3_isl_2015.nc
protocol: HTTPS
name: NetCDF Markup Language file
description: NetCDF Markup Language file
function: (CI_OnLineFunctionCode) information
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) repository
levelDescription: (MD_ScopeDescription)
other: NOAA National Centers for Environmental Information
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
dateTime:
DateTime: 2015-04-22T00:00:00
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) dataset
report: (DQ_AbsoluteExternalPositionalAccuracy)
nameOfMeasure: Horizontal Positional Accuracy Report
evaluationMethodDescription: The horizontal accuracy of bathymetric features in the DEM is dependent upon the DEM cell size and the accuracy of the input datasets used to determine corresponding cell values. Bathymetry: 100 meters to several hundreds of meters. Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM. Recent NOS hydrographic data: 1 to 16 meters. NGDC multibeam sonar: about 100 meters. CHS Multibeam: less than 1 meter to about 100 meters. Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM.
result: (missing)
report: (DQ_AbsoluteExternalPositionalAccuracy)
nameOfMeasure: Vertical Positional Accuracy Report
evaluationMethodDescription: The vertical accuracy of bathymetric features in the DEM is dependent upon the accuracy of the input datasets used to determine corresponding cell values. Bathymetry: up to 5% of water depth. Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cells in DEM. GPS-navigated NGDC multibeam sonar sonar data: about 0.1 meter. Gridding interpolation to determine cell values between sparse NOS hydrographic soundings degrades the vertical accuracy of elevations.
result: (missing)
report: (DQ_CompletenessCommission)
evaluationMethodDescription: NGDC made every effort to obtain all available digital bathymetric datasets in the region for use in building the DEM.
result: (unknown)
report: (DQ_ConceptualConsistency)
measureDescription: Datasets were visually compared internally and externally (with other overlapping datasets and satellite images and maps) in ESRI ArcGIS and Applied Imagery QT Modeler for identification of anomalous elevations or data inconsistencies. Where elevation inconsistencies occurred, the most recent and/or highest resolution data set was selected for use in that region. In general, elevations in the older and/or lower-resolution datasets were deleted prior to building the DEM.
result: (unknown)
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: All datasets obtained by NGDC were converted to common horizontal datum of WGS 84 geographic using ArcGIS. They were also converted to common file format, ESRI point shapefiles or digital rasters, for visualization and inspection.
dateTime:
DateTime: 2013-04-01T00:00:00
processor: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
positionName: DEM Information
contactInfo: (CI_Contact)
address: (CI_Address)
electronicMailAddress: dem.info@noaa.gov
role: (CI_RoleCode) pointOfContact
processStep: (LE_ProcessStep)
description: Datasets were visually inspected with ArcGIS and QT Modeler for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
dateTime:
DateTime: 2015-05-02T00:00:00
processStep: (LE_ProcessStep)
description: xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 3 arc-second grid that interpolated to fill empty cells. Points extracted every 10 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land.
dateTime:
DateTime: 2015-06-01T00:00:00
processStep: (LE_ProcessStep)
description: The DEM was quantitatively evaluated by comparing the grid against source data files.
dateTime:
DateTime: 2015-06-30T00:00:00
source: (LI_Source)
description: Source Contribution: hydrographic surveys ; Source Type: online
sourceCitation: (CI_Citation)
title: NOS Hydrographic Surveys
date: (CI_Date)
date: 2015-06-15
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html
name: NOS Hydrographic Survey Database
description: Digital database of NOS hydrographic surveys that date back to the late 19th century.
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1930-01-01
endPosition: 2011-01-01
source: (LI_Source)
description: Source Contribution: Multibeam bathymetry data ; Source Type: online
sourceCitation: (CI_Citation)
title: NGDC Multibeam Bathymetry Database
date: (CI_Date)
date: 2013-04-04
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html
name: NGDC Multibeam Bathymetry Database
description: Multibeam swath sonar survey data
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1981-01-01
endPosition: 2012-01-01
source: (LI_Source)
description: Source Contribution: ENC soundings and coastline ; Source Type: web
sourceCitation: (CI_Citation)
title: Electronic Navigational Chart (ENC) digital coastline and soundings
date: (CI_Date)
date: 2013-03-14
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: OCS > NOAA Office of Coast Survey
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm
name: Electronic Navigational Chart (ENC) soundings and coastline
description: ENC soundings and coastline extracted from NOS charts
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1997-01-01
endPosition: 2012-01-01
source: (LI_Source)
description: Source Contribution: bathymetry; Source Type: online
sourceCitation: (CI_Citation)
title: NGDC ETOPO1
date: (CI_Date)
date: 2013-04-02
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.ngdc.noaa.gov/mgg/global/global.html
name: NGDC ETOPO1
description: Integrated bathymetric-topographic global DEM
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1940-01-01
endPosition: 2008-01-01
source: (LI_Source)
description: Source Contribution: bathymetry
sourceCitation: (CI_Citation)
title: Canadian Hydrographic Service Multibeam bathymetry
date: (CI_Date)
date: 2012-01-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: Canadian Hydrographic Service (CHS)
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.dfo-mpo.gc.ca/index-eng.htm
name: Canadian Hydrographic Service (CHS)
description: CHS multibeam survey data was provided to NGDC by CHS.
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1996-01-01
endPosition: 2015-04-01
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) annually
dateOfNextUpdate: 2018-08-28
contact: (CI_ResponsibleParty)
individualName: Kelly Carignan
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
address: (CI_Address)
electronicMailAddress: kelly.carignan@noaa.gov
role: (CI_RoleCode) pointOfContact
contact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
positionName: Metadata Specialist
role: (CI_RoleCode) editor