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2008 NOAA/NGS Integrated Ocean and Coastal Mapping (IOCM) LIDAR: Kenai Peninsula Alaska

These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using an OPTECH ALTM system. The data includes topographic data in an LAS format file. The data was collected 31 July - 1 August 2008 on the Kenai Peninsula of Alaska. It has been processed to bare earth using only an automated routine - additional manual editing is required for localized use. The data covers portions of the Outer and Inner Kachemak Bay coastline from Point Anchor to Homer and along the coast into the head of the bay. The data falls in the Kachemak Bay National Estuarine Research Reserve and includes the Fox River Flats Critical Habitat Areas.

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    Distribution Formats
    • LAZ
    Distributor Distributor information not available
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      • publication: 2008-10-15
      Data Presentation Form: Digital image
      Dataset Progress Status Complete
      Data Update Frequency: Not planned
      Supplemental Information: Data include all lidar returns (first, second, third, and last) and have been classified to bare earth by the National Geodetic Survey (NGS) using only automated processes. "Outliers" or "false returns" (e.g., returns from birds, atmospheric particles, and/or system noise) may be present in the data.
      Purpose: This lidar was acquired by the NOAA Remote Sensing Division to support NOAA's IOCM initiative. It is not intended for mapping, charting or navigation. In addition, it will be used for ongoing research efforts for testing and developing standards for airborne lidar.
      Time Period: 2008-07-31  to  2008-08-01
      Spatial Reference System:
      Spatial Bounding Box Coordinates:
      N: 59.853050
      S: 59.596050
      E: -150.847142
      W: -151.897942
      Spatial Coverage Map:
      • Bathymetry/Topography
      • LIDAR
      • Elevation
      • United States
      • Alaska
      • Kenai Peninsula
      • Cook Inlet
      • Kachemak Bay
      • Kachemak Bay National Estuarine Research Reserve (NERR)
      • Homer
      • Homer Spit
      • Point Anchor
      • Fox River Flats
      Use Constraints No constraint information available
      Fees Fee information not available.
      Lineage Statement Lineage statement not available.
      • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
      Processing Steps
      • Data were processed to an initial LAS format using the ALTM DASHMAP software. The Applanix POSPac software was utilized for GPS and inertial processing, and Terrasolid software for data visualization, 3D editing and export to final LAS file. Data were processed in NAD83 horizontal and vertical datum.
      • 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 to make it available within Digital Coast: 1. The data were converted from UTM coordinates to geographic coordinates. 2. The LAS header fields were sorted by latitude and updated. 3. The data was filtered to eliminate outliers.
      • The NOAA National Geophysical Data Center (NGDC) received lidar data files via ftp transfer from the NOAA Coastal Services Center. The data are currently being served via NOAA CSC Digital Coast at The data can be used to re-populate the system. The data are archived in LAS or LAZ format. The LAS format is an industry standard for LiDAR data developed by the American Society of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless compressed version of LAS developed by Martin Isenburg ( The data are exclusively in geographic coordinates (either NAD83 or ITRF94). The data are referenced vertically to the ellipsoid (either GRS80 or ITRF94), allowing for the ability to apply the most up to date geoid model when transforming to orthometric heights.

      Metadata Last Modified: 2013-06-05

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