gov.noaa.ngdc.mgg.dem:karluk_ak_815_mhhw eng; USA utf8 dataset NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact 2020-01-16 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 column 1351 0.000148 row 541 0.000148 vertical 1 area true false center World Geodetic System 1984 WGS 84 2007-08-27 revision https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information resourceProvider European Petroleum Survey Group https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search publisher urn:ogc:def:crs:EPSG::4326 Mean Higher High Water height MHHW height 2012-08-05 revision https://epsg.org/crs_5869/MHHW-height.html MHHW height GML for mean higher high water vertical coordinate reference system (in meters) available from the epsg-registry. information resourceProvider European Petroleum Survey Group https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search publisher MHHW Karluk, Alaska 8/15 arc-second Coastal Digital Elevation Model 2019-02-07 publication First NOAA National Centers for Environmental Information publisher NOAA National Centers for Environmental Information originator DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator National Tsunami Hazard Mitigation Program (NTHMP) originator Citation URL https://www.ngdc.noaa.gov/mgg/coastal/coastal.html https: Integrated Models of Coastal Relief Project web page. information mapDigital NTHMP DEMs Karluk, Alaska 8/15 arc-second NOAA's National Centers for Environmental Information (NCEI) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. 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 various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters). Developed for the University of Alaska at Fairbanks (UAF), Geophysical Institute for tsunami and coastal inundation modeling efforts for the State of Alaska. completed NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact asNeeded 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 > Topographical Relief Maps Earth Science > Oceans > Coastal Processes > Coastal Elevation theme NASA/GCMD Earth Science Keywords DEM > Digital Elevation Model theme NASA/GCMD Platform Keywords ICSU-WDS > International Council for Science - World Data System project Global Change Master Directory (GCMD) Project Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian H: 1 meter - < 30 meters V: < 1 meter theme NASA/GCMD Data Resolution Keywords Coastal Relief Gridded elevations Integrated bathymetry and topography theme Uncontrolled Continent > North America > United States of America > Alaska Ocean > Pacific Ocean > North Pacific Ocean Vertical Location > Land Surface Vertical Location > Sea Floor place NASA/GCMD Location Keywords Karluk Kodiak Island Shelikof Strait Alaska place North Pacific 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 dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page 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 information custodian 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. otherRestrictions 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. NTHMP DEM Project 2009-12-01 publication DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Boulder Colorado publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator Citation URL https://www.ncei.noaa.gov/maps/bathymetry/ HTTPS Bathymetric Data Viewer 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). search Citation URL http://www.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html NTHMP DEM Project Project web page. information mapDigital NTHMP DEMs Named by primary coastal city, state in DEM. largerWorkCitation Digital Elevation Models of Akhiok, Karluk, and Old Harbor, Alaska: Procedures, Data Sources and Analysis 2019-02-07 publication DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Boulder CO publisher Kelly S. Carignan originator Matthew R. Love originator Michael Sutherland originator Christopher Amante originator Citation URL https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/ Digital Elevation Models of Akhiok, Karluk, and Old Harbor, Alaska: Procedures, Data Sources and Analysis Report describing the development of the Akhiok, Karluk, and Old Harbor, Alaska DEMs download 5 pages crossReference userGuide grid eng; USA elevation Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.0.8321 -154.56 -154.359999998 57.54 57.620000001 1929-01-01 2018-09-28 Measure of elevation values in meters. image Topography (m) 500.535247803 -188.567993164 urn:ogc:def:uom:OGC::m meter 32 NetCDF 1 NetCDF NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact No Charge http://www.ngdc.noaa.gov/thredds/catalog.html THREDDS Catalog NCEI Thredds Data Server NCEI Thredds Data Server fileAccess repository NOAA National Centers for Environmental Information 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. 2015-04-22T00:00:00 dataset Horizontal Positional Accuracy Report 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: Positional accuracy of input topographic datasets limits accuracy of corresponding cell values in DEM. Arctic DEM topography:est. ~4 meters, GPS: less than 5 meters. DEM cell-value relative-contribution factors: GPS: 100, Arctic DEM:1, DCRA: 100. Bathymetry: Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM. NOS survey data: from ~ 10 meter to several kilometers. DEM cell-value relative-contribution factors: Bathymetric surface: 1. Vertical Positional Accuracy Report 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: . Vertical accuracy of input topographic datasets limits accuracy of corresponding cells in DEM. Arctic DEM topography: est. ~4 meters . DEM cell-value relative-contribution factors: GPS: 100, Arctic DEM:1, DCRA: 100. Bathymetry: less than 1 meter to 5% of water depth. Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cells in DEM. DEM cell-value relative-contribution factors:Bathymetric surface: 1. Gridding interpolation to determine cell values between sparse soundings in deep water degrades the vertical accuracy of corresponding elevations. NCEI made every effort to obtain all available digital topographic and bathymetric datasets in the region for use in building the DEM. 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 deleted prior to building the DEM. All datasets obtained by NCEI were converted to common horizontal and vertical datums of WGS 84 geographic and Mean Higher High Water, respectively, based on tide station information. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection. 2018-12-19T00:00:00 Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact Datasets were visually inspected with ArcGIS and Global Mapper for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency. 2018-12-29T00:00:00 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 8/15 arc-second grid that interpolated to fill empty cells. Points extracted every 2 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting grid was clipped to the coastline to remove values over land. 2019-01-15T00:00:00 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. 2019-01-25T00:00:00 The DEM was quantitatively evaluated by comparing with source datasets. 2019-02-01T00:00:00 Source Contribution: ENC soundings and depth contours Electronic Navigational Chart (ENC) digital soundings and depth contours charts US5AK5SM and US4AK5JM 2017-04-13 distribution OCS > NOAA Office of Coast Survey originator http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm Electronic Navigational Chart (ENC) soundings ENC soundings extracted from NOS charts download 2004-09-01 2005-01-01 NOS hydrographic survey data NOS Hydrographic Surveys 2008-01-01 publication DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator Citation URL http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html NOS Hydrographic Survey Database Digital database of NOS hydrographic surveys that date back to the late 19th century. download 1929-01-01 1933-01-01 Tidal information table from which vertical datum adjustment information are interpreted Bench Mark Data Sheet with Tidal Datum References 2003-04-21 publication DOC/NOAA/NOS National Ocean Service, NOAA, U.S. Department of Commerce originator Citation URL http://tidesandcurrents.noaa.gov/station_retrieve.shtml Tides and Currents Station Selection Bench Mark Data Sheet for station # 9456992, # 9457724, #9458209, and #9457728 information documentDigital 1980-07-01 2009-08-01 Optically Derived Digital Surface Model (DSM) ArcticDEM - Mosaic files Version 3.0 2018-09-28 publication University of Minnesota, Polar Geospatial Center originator Citation URL www.pgc.umn.edu/arcticdem ArcticDEM ArcticDEM is an NGA-NSF public-private initiative to automatically produce a high-resolution, high quality, digital surface model (DSM) of the Arctic using optical stereo imagery, high-performance computing, and open source photogrammetry software. Geospatial support for this work provided by the Polar Geospatial Center under NSF PLR awards 1043681 and 1559691. DEMs provided by the Polar Geospatial Center under NSF PLR awards 1043681, 1559691, and 1542736 download 2009-08-23 2017-06-01 GPS survey data obtained from UAF UAF Akhiok, Karluk, and Old Harbor GPS publication University of Alaska at Fairbanks originator Topographic point data from CAD data files DCRA CAD topography 2006-11-17 publication State of Alaska, Division of Community and Regional Affairs (DCRA) originator 2006-05-21 annually 2020-02-19 Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact NOAA National Centers for Environmental Information Metadata Specialist editor Digital Elevation Model