Hilo, Hawaii 1/3 arc-second MHW Coastal Digital Elevation Model

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NOAA's National Geophysical Data Center (NGDC) 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 modeling 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. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, 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). Grid spacings for
the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). Show more...

Dataset Citation

Cite this dataset when used as a source.

Dataset Identifiers

ID not available.

ISO 19115-2 Metadata

gov.noaa.ngdc.mgg.dem:1843

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Search Data	DEM text search (search) Text search for locating completed and planned DEMs. Bathymetric Data Viewer (search) The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
Download Data	OPeNDAP Dataset Access Form (download) OPeNDAP Dataset Access Form Download NetCDF File (download) Download NetCDF File Download a subset of the NetCDF (download) Download a subset of the NetCDF
Distribution Formats	netCDF(Version:4 Classic)
Distributor	DEM Information NOAA National Centers for Environmental Information dem.info@noaa.gov
Dataset Point of Contact	DEM Information NOAA National Centers for Environmental Information dem.info@noaa.gov


Time Period	2005-01-01 to 2011-01-01
Spatial Reference System	urn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868
Spatial Bounding Box Coordinates	West:-155.43 East:-154.50 South:19.21 North:20.22
Spatial Coverage Map


General Documentation	Web Coverage Service GetCapabilities Web Coverage Service GetCapabilities Web Map Service GetCapabilities Web Map Service GetCapabilities NetCDF Markup Language file NetCDF Markup Language file
Associated Resources	Data Stewardship Maturity Report for Hilo, Hawaii 1/3 arc-second MHW Coastal Digital Elevation Model DSMR Publication at the NOAA Institutional Repository Report documenting the Scientific Data Stewardship Maturity for this dataset. NOAA Tsunami Inundation Gridding Project Bathymetric Data Viewer (search) The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI). DEM text search (search) Text search for locating completed and planned DEMs. Digital Elevation Models of Hilo, Hawaii: Procedures, Data Sources, and Analysis Digital Elevation Model of Hilo, Hawaii: Procedures, Data Sources and Analysis (download) Report describing the development of the Hilo DEM


Publication Dates	publication: 2011-08-12
Edition	First
Data Presentation Form	mapDigital
Dataset Progress Status	Complete - production of the data has been completed
Data Update Frequency	As needed
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.
Use Limitations	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. Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.


Originators	DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publishers	NOAA National Centers for Environmental Information DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce


Theme keywords	Global Change Master Directory (GCMD) Science Keywords Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth Earth Science > Land Surface > Topography > Terrain Elevation Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps Earth Science > Oceans > Coastal Processes > Coastal Elevation Uncontrolled Coastal Relief Gridded elevations Integrated bathymetry and topography Global Change Master Directory (GCMD) Service Keywords DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING Global Change Master Directory (GCMD) Service Keywords DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING Global Change Master Directory (GCMD) Service Keywords DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Data Center keywords	Global Change Master Directory (GCMD) Data Center Keywords DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Platform keywords	Global Change Master Directory (GCMD) Platform Keywords Models/Analyses > DEM > Digital Elevation Model
Place keywords	Global Change Master Directory (GCMD) Location Keywords Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands Vertical Location > Land Surface Vertical Location > Sea Floor Uncontrolled Hilo Hilo Bay Hawaii
Project keywords	Global Change Master Directory (GCMD) Project Keywords ICSU-WDS > International Council for Science - World Data System NOAA OneStop Project
Data Resolution keywords	Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords 1 meter - < 30 meters Global Change Master Directory (GCMD) Vertical Data Resolution Keywords < 1 meter


Use Constraints	No constraint information available
Access Constraints	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.
Fees	Fee information not available.

Lineage information for:dataset
Processor	NOAA National Centers for Environmental Information
Processing Steps	2011-03-14T00:00:00 -All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS84 geographic and Mean High Water, respectively, using constant offsets. They were also converted to common file format, ascii xyz files, for visualization and inspection. 2011-06-21T00:00:00 -Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency. 2011-07-15T00:00:00 -Multibeam surveys were gridded to 1 arc-second spacing (~10 meters) using MB-System's 'mbgrid' tool. 2011-07-19T00:00:00 -xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1/3 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 clipped to the coastline using GDAL to remove values over land. 2011-07-25T00:00:00 -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. Gridding was performed in quadrants, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final DEM. 2011-07-28T00:00:00 -The DEM was quantitatively evaluated by comparing with source datasets and with elevation values extracted from NGS geodetic monuments. It was visually evaluated by converting to projected coordinates (units of meters horizontally and vertically) and then creating a slope grid to identify gridding artifacts in the DEM.
Source Datasets	Electronic Navigational Charts and Raster Nautical Charts OCS Electronic Navigational Charts and Raster Nautical Charts (download) Digital database of NOAA nautical chart information. Description of Source: Source Contribution: coastline and bathymetric sounding data ; Source Type: online Time Instant: 2010-01-01 NGDC Multibeam Bathymetry Database NGDC Multibeam Bathymetry Database (download) Multibeam swath sonar survey data Description of Source: Source Contribution: multibeam swath sonar surveys ; Source Type: online Temporal extent used: 1987-01-01 to 2009-01-01 Bench Mark Data Sheets with Tidal Datum References Tides and Currents Station Selection (download) Bench Mark Data Sheets Description of Source: Source Contribution: tidal information table from which vertical datum adjustment information are interpreted ; Source Type: online Temporal extent used: 2006-01-01 to 2007-01-01

Lineage information for:repository
Processing Steps	2015-04-22T00:00:00 -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.

Acquisition Information (collection)
Instrument
Platform	Digital Elevation Model
Operation	Tsunami Inundation Gridding Project

Last Modified: 2022-03-25

For questions about the information on this page, please email:dem.info@noaa.gov