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Dataset Title:  Main Hawaiian Islands Multibeam Bathymetry Synthesis: 1-km Bathymetry and
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Institution:  University of Hawaii at Manoa (UH) Hawaii Mapping Research Group (HMRG)   (Dataset ID: hmrg_bathytopo_1km_mhi)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 latitude (degrees_north) ?      801    0.01 (even)
  < slider >
 longitude (degrees_east) ?      901    0.01 (even)
  < slider >
Grid Variables (which always also download all of the dimension variables)
 z (bathymetry and topography, meters) ?

File type: (more info)

(Documentation / Bypass this form) ?
(Please be patient. It may take a while to get the data.)


The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 17.0, 25.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -162.0, -153.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  z {
    Float32 _FillValue NaN;
    Float32 actual_range -6075.611, 3928.259;
    Float64 colorBarMaximum 3820.0;
    Float64 colorBarMinimum -5759.0;
    String ioos_category "Bathymetry";
    String long_name "bathymetry and topography";
    String positive "up";
    String standard_name "height";
    String units "meters";
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "Grid";
    String comment "These data are provided by the Hawaii Mapping Research Group (HMRG) of the School of Ocean and Earth Science and Technology (SOEST) and the University of Hawaii at Manoa and are distributed via THREDDS Data Server (TDS) and ERDDAP by PacIOOS.";
    String contributor_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String contributor_role "distributor";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "";
    String creator_institution "University of Hawaii at Manoa (UH) Hawaii Mapping Research Group (HMRG)";
    String creator_name "Paul Johnson";
    String creator_type "person";
    String creator_url "";
    String date_created "2011-05-13";
    String date_issued "2012-03-01";
    String date_metadata_modified "2019-11-01";
    String date_modified "2011-05-13";
    String drawLandMask "under";
    Float64 Easternmost_Easting -153.0;
    String geospatial_bounds "POLYGON ((17.0 -162.0, 25.0 -162.0, 25.0 -153.0, 17.0 -153.0, 17.0 -162.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 25.0;
    Float64 geospatial_lat_min 17.0;
    Float64 geospatial_lat_resolution 0.01;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -153.0;
    Float64 geospatial_lon_min -162.0;
    Float64 geospatial_lon_resolution 0.01;
    String geospatial_lon_units "degrees_east";
    String GMT_version "4.5.6 [64-bit]";
    String history 
"Version 19 of the synthesis relesaed (05/13/2011).
    String id "hmrg_bathytopo_1km_mhi";
    String infoUrl "";
    String institution "University of Hawaii at Manoa (UH) Hawaii Mapping Research Group (HMRG)";
    String instrument "In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > Sonar";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "elevation, oceans";
    String keywords "Earth Science > Land Surface > Topography > Terrain Elevation > Digital Elevation/Terrain Model (Dem), Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.";
    String locations "Continent > North America > United States Of America > Hawaii, Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands";
    String locations_vocabulary "GCMD Location Keywords";
    String metadata_link "";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 25.0;
    String platform "In Situ Ocean-based Platforms > Ships, Models/Analyses > > DEM > Digital Elevation Model";
    String platform_vocabulary "GCMD Platform Keywords";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "";
    String references ",";
    String source "multibeam sonar, satellite altimetry, Smith and Sandwell, USGS DEMs";
    String sourceUrl "";
    Float64 Southernmost_Northing 17.0;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "A 50-m resolution gridded synthesis of all available bathymetry (ocean depth) data for the main Hawaiian Islands, including ship-borne multibeam sonar surveys as well as the Smith and Sandwell measured and estimated global seafloor topography. Land topography from USGS DEMs are included in the grid as well.";
    String time_coverage_duration "P0D";
    String time_coverage_resolution "P0D";
    String title "Main Hawaiian Islands Multibeam Bathymetry Synthesis: 1-km Bathymetry and Topography";
    Float64 Westernmost_Easting -162.0;


Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

griddap request URLs must be in the form{?query}
For example,[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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