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Metadata Identifier: gov.noaa.csc.maps:2004_USGS_WFL_m1076
MD_DataIdentification
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2004 USGS/NASA Experimental Advanced Airborne Research Lidar (EAARL):
Western Florida, Post-Hurricane Charley (Seamless Topo-Bathy)
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A seamless (bare-earth and submerged) elevation map (also known as a Digital
Elevation Model, or DEM) of a portion of western Florida, post-Hurricane Charley,
was produced from remotely sensed, geographically referenced elevation measurements
cooperatively by the U.S. Geological Survey (USGS) and the National Aeronautics and
Space Administration (NASA). Elevation measurements were collected over the area using
the NASA Experimental Advanced Airborne Research Lidar (EAARL), a pulsed laser ranging
system mounted onboard an aircraft to measure ground elevation, vegetation canopy,
and coastal topography. The system uses high-frequency laser beams directed at the
Earth's surface through an opening in the bottom of the aircraft's fuselage. The laser
system records the time difference between emission of the laser beam and the reception
of the reflected laser signal in the aircraft. The plane travels over the target area
at approximately 50 meters per second at an elevation of approximately 300 meters.
The EAARL, developed by NASA at Wallops Flight Facility in Virginia, measures ground
elevation with a vertical resolution of +/-15 centimeters. A sampling rate of 3 kilohertz
or higher results in an extremely dense spatial elevation dataset. Over 100 kilometers
of coastline can be surveyed easily within a 3- to 4-hour mission. When subsequent
elevation maps for an area are analyzed, they provide a useful tool to make management
decisions regarding land development.
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SV_Identification
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2004 USGS/NASA Experimental Advanced Airborne Research Lidar (EAARL): Western Florida,
Post-Hurricane Charley (Seamless Topo-Bathy)
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None |
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North American Datum 1983 |
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Small footprint, waveform-resolving Lidar estimation of submerged and subcanopy topography
in coastal environments
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International Journal of Remote Sensing |
30(4), p. 861-878 |
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resourceProvider |
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
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Amar Nayegandhi |
Jacobs Technology, U.S. Geological Survey, CMGP, St. Petersburg, FL |
Computer Scientist |
anayegandhi@usgs.gov |
pointOfContact |
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Amar Nayegandhi |
Jacobs Technology, U.S. Geological Survey, CMGP, St. Petersburg, FL |
Computer Scientist |
anayegandhi@usgs.gov |
processor |
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NOAA CSC (originator) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
originator |
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NOAA CSC (publisher) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
publisher |
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NOAA CSC(distributor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
distributor |
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NOAA CSC (processor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
processor |
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DOI/USGS > United States Geological Survey, U.S. Department of the Interior |
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originator |
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EPSG Registry |
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European Petroleum Survey Group |
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publisher |
http://www.epsg-registry.org/ |
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Mike Sutherland(author) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
author |
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Mike Sutherland |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
distributor |
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National Aeronautics and Space Administration (NASA) |
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originator |
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Nayegandhi, Amar, Brock, J.C., and Wright, C.W. |
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originator |
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Pamela Grothe |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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processor |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.
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search |
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http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
NAD83 |
Link to Geographic Markup Language (GML) description of reference system. |
information |
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Ellipsoid in Meters |
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urn:ogc:def:crs:EPSG::4269 |
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Bounding Box |
Temporal Extent |
| 1 |
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-82.452251 |
-82.013156 |
27.074949 |
26.419666 |
2004-08-17 |
2004-08-18 |
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-82.452251 |
-82.013156 |
27.074949 |
26.419666 |
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Lidar Use Limitation |
These data depict the elevations at the time of the survey and are only
accurate for that time. 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. Any conclusions
drawn from analysis of this information are not the responsibility of NOAA
or any of its partners. These data are NOT to be used for navigational purposes.
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Ellipsoid |
Ellipsoid in Meters |
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NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
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Small footprint, waveform-resolving Lidar estimation of submerged and subcanopy topography
in coastal environments
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crossReference |
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2009-01-01T00:00:00 |
The data are collected using a Cessna 310 aircraft. The NASA Experimental
Advanced Airborne Research Lidar (EAARL) laser scanner collects the data using a green
(532-nanometers) raster scanning laser, while a digital camera acquires a visual record
of the flight. The data are stored on hard drives and archived at the U.S. Geological
Survey office in St. Petersburg, Florida, and the NASA office at Wallops Flight Facility
in Virginia. The navigational data are processed at Wallops Flight Facility. The navigational
and raw data are then downloaded into the Airborne Lidar Processing System (ALPS).
Data are converted from units of time to x,y,z points for elevation. The derived surface
data can then be converted into raster data (GeoTIFFs).
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2011-10-25T00:00:00 |
The NOAA Coastal Services Center received the data in LAS format.
The files contained Lidar elevation and intensity measurements. The data were projected
in UTM coordinates (NAD83; Zone 17N) and referenced to the North American Vertical
Datum of 1988 (NAVD88) using the Geoid03 model. The following processes were performed
to make the data available within the Digital Coast: 1. The data were converted from
UTM (NAD83; Zone 17N) to geographic coordinates (NAD83). 2. The data were converted
from NAVD88 (orthometric) heights to GRS80 (ellipsoidal) heights using the Geoid03
model. 3. The data were reclassified to reflect the ASPRS LAS bare earth classification.
4. The LAS data were sorted by latitude and the headers were updated.
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2012-01-04T00:00:00 |
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
heights.
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