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
Cite this dataset when used as a source.
|Search and Download
|| Distributor information not available
| Point of Contact
Documentation links not available.
|Data Presentation Form:
|| Digital image
|Dataset Progress Status
|Data Update Frequency:
|| Not planned
||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.
||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
||2008-07-31 to 2008-08-01
|Spatial Reference System:
|Spatial Bounding Box Coordinates:
|Spatial Coverage Map:
- United States
- Kenai Peninsula
- Cook Inlet
- Kachemak Bay
- Kachemak Bay National Estuarine Research Reserve (NERR)
- Homer Spit
- Point Anchor
- Fox River Flats
| Use Constraints
|| No constraint information available
|| Fee information not available.
|| Lineage statement not available.
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
| 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 http://www.csc.noaa.gov/digitalcoast/.
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 (http://www.laszip.org/). 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
Metadata Last Modified: 2013-06-05
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