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2011 NOAA National Geodetic Survey (NGS) LIDAR of North Carolina: Hurricane Irene Emergency Response Mapping Product

browse graphicThis file shows the coverage for the 2011 NGS North Carolina Post Hurricane Irene lidar.
These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a Riegl Q680i-D system. The data were collected August 28 and 29, 2011 after landfall of Hurricane Irene in Dare and Carteret counties in North Carolina. The data includes topographic data in an LAS 1.2 format file classified as unclassified (1), ground (2), and water (9) in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. This data set also includes lidar intensity values and encoded RGB image values.

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    Distribution Formats
      Distributor NOAA Coastal Services Center
      Point of Contact National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
      301-713-2663
      Documentation links not available.
      Originator
      • Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
      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: 2011-01-01
      Dataset Progress Status Complete
      Data Update Frequency: Not planned
      Supplemental Information: Data include all lidar returns. Outliers or false returns (e.g., returns from birds, atmospheric particles, and/or system noise) may be present in the data. An automated ground classification algorithm was used to determine bare earth point classification. It should be noted that not all water returns were correctly classified; therefore the ground classification could proceed into water bodies, and should be removed by the user.
      Purpose: This lidar was acquired by the NOAA Remote Sensing Division to support NOAA's Emergency Response Program. 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.
      Use Limitations
      • Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Geodetic Survey, 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: 2011-08-28  to  2011-08-29
      Spatial Reference System: urn:ogc:def:crs:EPSG::4269
      Spatial Bounding Box Coordinates:
      N: 35.806565
      S: 34.568740
      E: -75.442712
      W: -77.112991
      Spatial Coverage Map:
      Themes
      • Bathymetry/Topography
      • LIDAR
      • Topography
      • Post Hurricane Irene
      Places
      • United States
      • North Carolina
      • Carteret County
      • Dare County
      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.
      Lineage Statement Lineage statement not available.
      Processor
      • NOAA Coastal Services Center
      • 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 Riegl RiProcess 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 the files in las format. The files contained lidar elevation, intensity, and RGB image values. The data were in UTM Zone 18N projection. CSC performed the following processing for data storage and Digital Coast provisioning purposes: 1. The data were converted from UTM Zone 18N coordinates to geographic coordinates. 2. The data were filtered to remove outliers. 3. The LAS data were sorted by time and the headers were updated. 4. The LAS files were compressed to LAZ files using laszip version 111006.
      • 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.
      Processing Environment Native Dataset Environment: OS Independent

      Metadata Last Modified: 2012-01-04

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