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2007 JALBTCX Hawaii Lidar: North Coasts of Hawaii (Big Island), Kauai, Maui, Molokai, Oahu

The data contained in these files contain topographic data collected by the CHARTS system along the northern coast of Hawaii (Big Island), Kauai, Maui, Molokai, and Oahu in the state of Hawaii. The data were collected on the following dates: Hawaii (Big Island): 20070123-20070210 Kauai: 20070112-20070210 Maui: 20070111-20070127 Molokai: 20070111-20070127 Oahu: 20070112-20070210 The data points representing bare earth have been classified as such using TerraScan with results provided in the classified las files. Classification value "1" means "Unclassified" and a value "2" means "Ground." The data were collected and processed in geographic coordinates and ellipsoid heights. The positions are relative to NAD83 HARN in decimal degrees of longitude and latitude. The heights were converted from ellipsoid to geoid (NAVD88) heights using the Geoid03 model with the results in meters. These heights were then adjusted to Mean Sea Level. The NOAA Coastal Services Center left the data in the tidal vertical datum and the Geotiff tags were updated to reflect this datum. No vertical transforms will be performed on this data during provisioning.

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    Distribution Formats
      Distributor NOAA Coastal Services Center
      Documentation links not available.
      Originator
      • Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
      Originator
      • Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
      Publisher
      • NOAA's Ocean Service, Coastal Services Center (CSC)
      Date(s)
      • publication: 2007-12-11
      Dataset Progress Status Complete
      Data Update Frequency: As needed
      Supplemental Information: A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/hi/usace2007/2007_JALBTCX_Hawaii_Lidar.kmz
      Purpose: The purpose of the 2007 Hawaii survey, in general, was to collect both bathymetric and topographic lidar along the northern coastline of the Hawaiian Islands. Topographic data were required between the zero and 15 meter contours, nominal, for the northern coastline of the islands of Hawaii (Big Island), Kauai, Maui, Molokai, and Oahu. Bathymetric Lidar data collection was attempted in Kaneohe Bay, Oahu, to fill-in the data gaps between the shoreline and the previously collected SHOALS data. Bathymetric Lidar data were collected on the island of Hawaii from Honolii Stream south along the shoreline to the existing SHOALS data. The data were to be collected from the land water interface seaward to a depth of 40 meters or laser extinction, whichever comes first. These data were collected for Hawaii State Civil Defense for tsunami mapping purposes. The manager for this project was Milton Yoshimoto (808) 438-2250.
      Use Limitations
      • Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Coastal Services Center or its partners. Disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
      Time Period: 2007-01-12  to  2007-02-10
      Spatial Reference System: urn:ogc:def:crs:EPSG::5715
      Spatial Bounding Box Coordinates:
      N: 22.235079
      S: 19.511494
      E: -154.806552
      W: -159.790577
      Spatial Coverage Map:
      Themes
      • Bathymetry/Topography
      • Lidar
      • elevation
      Places
      • United States
      • Hawaii
      • Hawaii (Big Island)
      • Kauai
      • Oahu
      • Maui
      • Molokai
      Use Constraints
      • Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.
      Access Constraints
      • Access Constraints: None
      Fees Fee information not available.
      Source Datasets
      • 2007 HI Hawaii CHARTS Survey
        • Description of Source: Source Contribution: LidarSource Type: hard drive
        • Temporal extent used:  2007-01-12  to  2007-02-10
      Lineage Statement Lineage statement not available.
      Processor
      • JALBTCX
      • NOAA Coastal Services Center
      • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
      Processing Steps
      • These data were collected using the CHARTS surveys system. It is owned by the Naval Oceanographic Office and Operated through contract. The system collects topographic lidar data at 20 kHz and hydrographic data at 3 kHz. The system also collects RGB imagery at 1Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V equipment. Raw data are collected and transferred to the office for downloading and processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset. The edited data are written to the national grid system 1 km tiles using chartsLAS, a program written by NAVO. The data are converted from ellipsoid to orthometric heights, based on the GEOID03 model, within the chartsLAS program. The LAS files output from chartsLAS were read into TerraScan and filters were applied to classify ground points. Points designated as ground are assigned a classification value "2" and all other points are assigned the classification value "1" which represents an unclassified state.
      • The NOAA Coastal Services Center (CSC) received files in las format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing on the data for storage purposes and to make it available within Digital Coast: 1. The data were left in the tidal vertical datum and the Geotiff tags were updated to reflect this datum. No vertical transforms will be performed on this data during provisioning. 2. The LAS header fields were sorted by latitude and updated.
      • The NOAA National Geophysical Data Center (NGDC) received Lidar data files by ftp. The data received compressed containing LiDAR data from the NOAA Coastal Services Center. The data are currently being served via Digital Coastl at http://www.csc.noaa.gov/digitalcoast/. The data can be used to re-populate the system. The data are provided in LAS format. LAS format is an industry standard for serving LiDAR data. The data are exclusively in geographic coordinates, however, the datums used vary. Most are NAD 83, however some are in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD 88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD 88 prior to 2003 was processed using Geoid 99.

      Metadata Last Modified: 2011-11-19

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