Barkley Sound, Canada 1 arc-second Coastal Digital Elevation Model
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title: Barkley Sound, Canada 1 arc-second Coastal 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.
purpose: Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for Tsunami Research program in support of NOAA's tsunami forecasting and warning efforts.
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keyword: Barkley Sound
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keyword: Alberni Straight
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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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: Digital Elevation Model of Barkley Sound, 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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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: NASA Goddard Space Flight Center, Earth Science Data and Information System
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
name: Global Change Master Directory (GCMD) Keywords
description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the 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/barkley_sound_1_navd88_2016.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/barkley_sound_1_navd88_2016.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/barkley_sound_1_navd88_2016.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/barkley_sound_1_navd88_2016.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/barkley_sound_1_navd88_2016.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/barkley_sound_1_navd88_2016.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fbarkley_sound_1_navd88_2016.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 and topographic features in the DEM is dependent upon DEM cell size and the accuracy of the input datasets used to determine corresponding cell values. Topography: 10 meters. Positional accuracy of input topographic datasets limits accuracy of corresponding cell values in DEM. CDSM topography: 30 meters, Lidar: less than 1 meter. Bathymetry: less than 1 meter to a few kilometers. Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM. Multibeam data: ranging from less than 1 meter to 10 meters .
result: (missing)
report: (DQ_AbsoluteExternalPositionalAccuracy)
nameOfMeasure: Vertical Positional Accuracy Report
evaluationMethodDescription: The vertical accuracy of bathymetric and topographic features in the DEM is dependent upon the accuracy of the input datasets used to determine corresponding cell values. Topography: 9 cm to 1 meter. Vertical accuracy of input topographic datasets limits accuracy of corresponding cells in DEM. Bathymetry: less than 1 meter to 5% of water depth. Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cells in DEM. Gridding interpolation to determine cell values between sparse soundings in deep water degrades the vertical accuracy of corresponding elevations.
result: (missing)
report: (DQ_CompletenessCommission)
evaluationMethodDescription: NCEI made every effort to obtain all available digital topographic and 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 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. Elevations in the older and/or lower-resolution datasets were superceded prior to building the DEM.
result: (unknown)
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: All datasets obtained by NCEI were transformed to common horizontal and vertical datums of WGS 84 geographic and NAVD88, respectively, using constant offsets and transformation parameters in NOAAs VDatum software. They were also converted to common file format for visualization and inspection.
dateTime:
DateTime: 2015-10-28T00:00:00
processor: (CI_ResponsibleParty)
individualName: Matthew R. Love
organisationName: NOAA National Centers for Environmental Information
role: (CI_RoleCode) pointOfContact
processStep: (LE_ProcessStep)
description: Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
dateTime:
DateTime: 2015-10-28T00:00:00
processStep: (LE_ProcessStep)
description: Older and low-resolution data were clipped to newer and high-resolution data where inconsistencies occured in overlap areas of the datasets.
dateTime:
DateTime: 2015-10-28T00:00:00
processStep: (LE_ProcessStep)
description: Topographic data was filtered to remove water surface points where they existed
dateTime:
DateTime: 2015-10-28T00:00:00
processStep: (LE_ProcessStep)
description: xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1 arc-second grid that interpolated to fill empty cells. Points extracted every 5 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was clipped to the coastline to remove values over land using GDAL.
dateTime:
DateTime: 2015-10-30T00:00:00
processStep: (LE_ProcessStep)
description: xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets.
dateTime:
DateTime: 2015-11-12T00:00:00
processStep: (LE_ProcessStep)
description: The DEM was quantitatively evaluated by comparing with source datasets.
dateTime:
DateTime: 2015-11-14T00:00:00
source: (LI_Source)
description: Source Contribution: bathymetric soundings
sourceCitation: (CI_Citation)
title: Canadian Hydrographic Service
date: (CI_Date)
date: 2012-03-02
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://www.charts.gc.ca/index-eng.asp
name: Canadian Hydrographic Service Electronic Navigational Chart
description: Digital database of CHS hydrographic surveys.
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1928-01-01
endPosition: 2014-01-01
source: (LI_Source)
description: Source Contribution: bathymetric surface
sourceCitation: (CI_Citation)
title: Bathymetry data for offshore BC at a resolution of 500 metres
date: (CI_Date)
date: 2011-03-19
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://soggy.zoology.ubc.ca:8080/geonetwork/srv/eng/search#|c237a9d8-7bca-4065-ba04-5464721ca7b8
name: Geonetwork Opensource
description: Marine Data for BC Geonetwork
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
source: (LI_Source)
description: Source Contribution: Topographic Lidar LAS
sourceCitation: (CI_Citation)
title: Alberni-Clayoquot Regional District
date: (CI_Date)
date: 2014-04-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: Alberni-Clayoquot Regional District
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
role: (inapplicable)
source: (LI_Source)
description: Source Contribution: High-resolution Topographic data
sourceCitation: (CI_Citation)
title: GeoBC
date: (CI_Date)
date: 2015-05-11
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: GeoBC
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://geobc.gov.bc.ca/
name: NOAA OCM Digital Coast
description: GeoBC, creates and manages geospatial information and products, as well as provides consultation services across all natural resource sector (NRS) agencies.
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
source: (LI_Source)
description: Source Contribution: Multibeam Data
sourceCitation: (CI_Citation)
title: Canadian Hydrographic Service
date: (CI_Date)
date: 2000-01-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: Canadian Hydrographic Service
role: (CI_RoleCode) originator
source: (LI_Source)
description: Source Contribution: Topographic Surface
sourceCitation: (CI_Citation)
title: Canadian Digital Surface Model
date: (CI_Date)
date: 2013-04-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: Natural Resources Canada
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
positionName: Citation URL
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: http://geogratis.gc.ca/site/eng/extraction
name: Canadian Digital Surface Model
description: The CDSM is part of Natural Resources Canada's altimetry system designed to better meet the users' needs for elevation data and products.
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
source: (LI_Source)
description: Source Contribution: vertical datum transformation tool
sourceCitation: (CI_Citation)
title: VDatum software v. 3.4
date: (CI_Date)
date: 2014-05-13
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NOS National Ocean Service, 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.vdatum.noaa.gov
name: VDatum
description: Vertical Datum Transformation tool
function: (CI_OnLineFunctionCode) download
role: (inapplicable)
presentationForm: (CI_PresentationFormCode) modelDigital
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimeInstant:
timePosition: 2014-05-13
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) annually
dateOfNextUpdate: 2018-10-19
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
