Identification_Information: Citation: Citation_Information: Originator: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) Publication_Date: 20131022 Title: Gridded bathymetry of Kahoolawe Island, Hawaii, USA Geospatial_Data_Presentation_Form: digital data Online_Linkage: http://www.soest.hawaii.edu/pibhmc/pibhmc_mhi_kal_bathy.htm Online_Linkage: http://www.soest.hawaii.edu/pibhmc Description: Abstract: Gridded bathymetry (10m) of Kahoolawe Island, Hawaii, USA. The data include multibeam bathymetry from the EM120, EM122, EM710, EM1020, and EM1002 multibeam sonar collected by the Hawai'i Undersea Research Laboratory of the University of Hawaii in depths between -30 and -1300 meters. Data processing was done for distribution by the NOAA Coral Reef Ecosystem Division. Purpose: These ASCII grids were created using data gathered from multibeam soundings for documentation and for use as a planning and reference document. Further data were collected to fill gaps in the existing bathymetry. Refer to supplemental information for description of instrument and survey. Supplemental_Information: Data were collected aboard the R/V Kilo Moana, a 186' Waterplane Area Twin Hull (SWATH) vessel owned by the U.S. Navy and operated by the University of Hawaii Marine Center. The R/V Kilo Moana's survey sensors include a Simrad EM710: 70-100 kHz swath mapping, 10-1800 m depth range Multibeam and a Simrad EM122: 12 kHz swath mapping, 300-11,000 m depth range which measure bathymetry and acoustic backscatter imagery, a TSS/POS/MV 320 Model which measures time, position, velocity, attitude and heading, and a Seabird SBE 19plus CTD used to measure sound velocity profiles. Specific equipment configurations are documented: http://www.soest.hawaii.edu/UMC/cms/kilo-moana/ http://www.rvdata.us/catalog/Kilo_Moana http://www.soest.hawaii.edu/UMC/cms/sensor-calibration-records/ Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20031019 Ending_Date: 20110902 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -156.898002 East_Bounding_Coordinate: -156.450646 North_Bounding_Coordinate: 20.631343 South_Bounding_Coordinate: 20.361315 Keywords: Theme: Theme_Keyword_Thesaurus: NCEI Geoportal Filter Theme_Keyword: CoRIS_Metadata Theme: Theme_Keyword_Thesaurus: CRCP Project Theme_Keyword: Benthic Habitat Mapping and Characterization in the Pacific Islands Region Theme_Keyword: 467 Theme: Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus Theme_Keyword: EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: 006 Theme: Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus Theme_Keyword: Geographic Information > Bathymetry Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Bathymetry Theme_Keyword: Multibeam sonar Place: Place_Keyword_Thesaurus: None Place_Keyword: Hawaiian Islands Place_Keyword: Kahoolawe Place: Place_Keyword_Thesaurus: CoRIS Place Thesaurus Place_Keyword: OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Kahoolawe Island > Kahoolawe Island (20N156W0001) Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Kalawao > Kahoolawe Island (20N156W0001) Access_Constraints: None Use_Constraints: These data are not to be used for navigation purposes. Please acknowledge the NOAA Pacific Islands Fisheries Science Center (PIFSC) Coral Reef Ecosystem Division (CRED) and the Pacific Islands Benthic Habitat Mapping Center (PIBHMC), and the Joint Institute for Marine and Atmospheric Research (JIMAR) and School of Ocean and Earth Science and Technology (SOEST), University of Hawaii as the sources of this information. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) Contact_Address: Address_Type: mailing and physical Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 WASP Blvd., Building 176 City: Honolulu State_or_Province: HI Postal_Code: 96818 Country: USA Contact_Voice_Telephone: 808 725-5360 Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov Contact_Instructions: e-mail preferred Browse_Graphic: Browse_Graphic_File_Name: http://www.soest.hawaii.edu/pibhmc/MHI_images/kal_bathy_10m_445.jpg Browse_Graphic_File_Description: Multibeam Bathymetry Browse_Graphic_File_Type: JPEG Data_Set_Credit: HURL,PIBHMC, CRED, PIFSC, NOAA and JIMAR Security_Information: Security_Classification_System: Not applicable Security_Classification: Unclassified Security_Handling_Description: Not applicable Native_Data_Set_Environment: netCDF file created using the Generic Mapping Tools (GMT) and ArcGIS ASCII file, both created in a LINUX environment Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data are collected for resource management and research purposes and are tested for internal consistency; however, no effort is made to compare these data to external references or to other published data. Logical_Consistency_Report: These data are believed to be logically consistent though no tests were performed Completeness_Report: Complete Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal positioning system: GPS (SPS) Horizontal position accuracy: 25 m Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 1 m Raw sounding resolution: Variable Lineage: Process_Step: Process_Description: Multibeam swath files are acquired in the Generic Sensor Format (GSF) and are edited on a swath by swath basis using SAIC's SABER editing software. The edited swath files are then combined into a Pure File Magic (PFM) format with a defined grid cell size (10 m) in SABER and area based editing is performed. The edited PFM is then exported as X,Y,Z data with a value at each grid node. The X,Y,Z data are then gridded using nearneighbor, a Generic Mapping Tools (GMT) algorithm that converts an ASCII or binary table to a netCDF grid file format. NetCDF grids are then converted to an ArcGIS ASCII file format using LINUX/UNIX commands in combination with GMT. GMT is an open source collection of tools for manipulating geographic data sets. Additional information about GMT can be found at: http://www.soest.hawaii.edu/gmt and additional information about the multibeam data processing is recorded in the cruise metadata. Process_Date: 20111001 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 2925 Column_Count: 4627 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 4 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .9996 Longitude_of_Central_Meridian: -165 Latitude_of_Projection_Origin: 0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 10 Ordinate_Resolution: 10 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: mean lower low water Depth_Resolution: 0.01 Depth_Distance_Units: meters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Depth values are real values based on the average of the soundings that fell within the extracted grid cells. The number of soundings per grid cell range from >1000 soundings in shallow depths to as few as 20 soundings in deeper areas. A total error budget for this survey has not been developed. Therefore, the accuracy of depth measurements should be considered to be within 1 meter. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) Contact_Address: Address_Type: mailing and physical Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 WASP Blvd., Building 176 City: Honolulu State_or_Province: HI Postal_Code: 96818 Country: USA Contact_Voice_Telephone: 808 725-5360 Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov Contact_Instructions: e-mail preferred Resource_Description: Downloadable Data Distribution_Liability: These data are not to be used for navigational purposes. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Arc ASCII Format_Information_Content: The Arc ASCII file, for use in ESRI's (http://www.esri.com) GIS software, can be converted to an Arc Raster Grid using ArcToolbox ASCII to Raster conversion tool. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/kal_bathy_10m.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20200329 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) Contact_Address: Address_Type: mailing and physical Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 WASP Blvd., Building 176 City: Honolulu State_or_Province: HI Postal_Code: 96818 Country: USA Contact_Voice_Telephone: 808 725-5360 Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov Contact_Instructions: e-mail preferred Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: universal time Metadata_Access_Constraints: None Metadata_Use_Constraints: None CoRIS: CoRIS_Metadata_Link: https://www.coris.noaa.gov/metadata/records/html/kal_bathy_10m.html CoRIS_Tracking_ID: 6752