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Metadata Identifier: gov.noaa.csc.maps:usgs2004_northgulf_postivan_m1123
MD_DataIdentification
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2004 USGS/NASA Experimental Advanced Airborne Research Lidar (EAARL):
Northern Gulf of Mexico, Post-Hurricane Ivan
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ASCII xyz point cloud data were produced from remotely-sensed, geographically-referenced
elevation measurements in cooperation with the U.S. Geological Survey (USGS) and National
Air 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 kHz or higher results in an extremely dense spatial elevation data set. Over 100
kilometers of coastline can be easily surveyed within a 3 to 4 hour mission time period.
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): Northern Gulf
of Mexico, Post-Hurricane Ivan
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| 1 |
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Basis and methods of NASA Airborne Topographic Mapper lidar surveys for coastal studies |
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Coastal impacts of the 2004 hurricanes measured with airborne lidar; initial results |
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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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| 1 |
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International Journal of Remote Sensing |
30(4); pp. 861-878 |
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| 1 |
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Journal of Coastal Research |
18(1), pp. 1-13 |
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| 1 |
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Shore and Beach |
73(2&3), pp. 10-14 |
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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 or John Brock at USGS |
Jacobs Technology, contracted to USGS |
Computer Scientist |
anayegandhi@usgs.gov jbrock@usgs.gov |
pointOfContact |
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Amar Nayegandhi |
Jacobs Technology, U. S. Geological Survey, FISC St. Petersburg |
Computer Scientist |
anayegandhi@usgs.gov |
processor |
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Brock, J.C., C.W. Wright, A.H. Sallenger, W.B. Krabill, and R.N. Swift |
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originator |
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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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| 1 |
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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EPSG Registry |
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European Petroleum Survey Group |
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publisher |
http://www.epsg-registry.org/ |
| 1 |
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Metadata Specialist |
U. S. Geological Survey |
Metadata Specialist |
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processor |
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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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| 1 |
Mike Sutherland (processor) |
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 |
processor |
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| 1 |
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Nayegandhi, A., Brock, J.C., Wright, C.W |
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originator |
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Sallenger, A.H., C.W. Wright, and J. Lillycrop |
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originator |
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U.S. Geological Survey |
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originator |
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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 |
| 1 |
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urn:ogc:def:crs:EPSG::4269 |
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Bounding Box |
Temporal Extent |
| 1 |
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-88.524510 |
-84.333193 |
30.400043 |
29.587063 |
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| 1 |
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-88.524510 |
-84.333193 |
30.400043 |
29.587063 |
| 1 |
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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| 1 |
Ellipsoid |
Ellipsoid in Meters |
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| 1 |
NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
| 1 |
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Basis and methods of NASA Airborne Topographic Mapper lidar surveys for coastal studies |
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crossReference |
| 1 |
|
Coastal impacts of the 2004 hurricanes measured with airborne lidar; initial results |
|
crossReference |
| 1 |
|
Small footprint, waveform-resolving lidar estimation of submerged and subcanopy topography
in coastal environments
|
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crossReference |
| 1 |
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2007-12-01T00:00:00 |
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
(532nm) 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, FISC St. Petersburg office and the NASA office at Wallops Flight Facility.
The navigational data are processed at Wallops Flight Facility. The navigational and
raw data are then downloaded into the Advanced 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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2008-03-10T00:00:00 |
Metadata imported into ArcCatalog from XML file. |
| 1 |
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2012-01-25T00:00:00 |
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 16N) 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 classifications (1 -
unclassified, 2 - bare earth). 4. The LAS data were sorted by latitude and the headers
were updated. 5. The data were converted to LAZ format.
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2013-01-22T00:00:00 |
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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