Dataset Identification:
Resource Abstract:
- description: A first-surface topography digital elevation model (DEM) mosaic for the Big Sandy Creek Unit of Big Thicket National
Preserve in Texas, was produced from remotely sensed, geographically referenced elevation measurements collected on January
19, 21, 22, and 30, 2014 by the U.S. Geological Survey, in cooperation with the National Park Service - Gulf Coast Network.
Elevation measurements were collected over the area using the second-generation Experimental Advanced Airborne Research Lidar,
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 55 meters per second at an elevation
of approximately 300 meters, resulting in a laser swath of approximately 240 meters with an average point spacing of 0.5-1.6
meters. A peak sampling rate of 15-30 kilohertz results in an extremely dense spatial elevation dataset. More than 100 kilometers
of coastline can be surveyed easily within a 3- to 4-hour mission. When resultant elevation maps for an area are analyzed,
they provide a useful tool to make management decisions regarding land development.; abstract: A first-surface topography
digital elevation model (DEM) mosaic for the Big Sandy Creek Unit of Big Thicket National Preserve in Texas, was produced
from remotely sensed, geographically referenced elevation measurements collected on January 19, 21, 22, and 30, 2014 by the
U.S. Geological Survey, in cooperation with the National Park Service - Gulf Coast Network. Elevation measurements were collected
over the area using the second-generation Experimental Advanced Airborne Research Lidar, 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 55 meters per second at an elevation of approximately 300
meters, resulting in a laser swath of approximately 240 meters with an average point spacing of 0.5-1.6 meters. A peak sampling
rate of 15-30 kilohertz results in an extremely dense spatial elevation dataset. More than 100 kilometers of coastline can
be surveyed easily within a 3- to 4-hour mission. When resultant elevation maps for an area are analyzed, they provide a useful
tool to make management decisions regarding land development.
Citation
- Title EAARL-B Topography-Big Thicket National Preserve: Big Sandy Creek Unit, Texas, 2014.
-
- creation Date
2018-06-08T17:57:50.822982
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-07T00:02:29Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-07T00:02:29Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:d4cdc3e6-3e6b-4dce-9ac1-4f8b8d6b0e21
Metadata record format is ISO19139 XML (MD_Metadata)