EAARL Coastal Topography–Texas, Post-Hurricane Rita, 2005: Bare Earth
ASCII XYZ point cloud data were produced from remotely sensed, geographically referenced elevation measurements by the U.S. Geological Survey (USGS). Elevation measurements were collected over a portion of the Texas coastline, post-Hurricane Rita (September 2005 hurricane), using the 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 60 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 2-3 meters. The EAARL, developed originally by the National Aeronautics and Space Administration (NASA) at Wallops Flight Facility in Virginia, measures ground elevation with a vertical resolution of 3 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 resultant elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land development.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Xan Fredericks",
"@type": "vcard:Contact",
"hasEmail": "mailto:afredericks@usgs.gov"
}
|
| description | ASCII XYZ point cloud data were produced from remotely sensed, geographically referenced elevation measurements by the U.S. Geological Survey (USGS). Elevation measurements were collected over a portion of the Texas coastline, post-Hurricane Rita (September 2005 hurricane), using the 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 60 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 2-3 meters. The EAARL, developed originally by the National Aeronautics and Space Administration (NASA) at Wallops Flight Facility in Virginia, measures ground elevation with a vertical resolution of 3 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 resultant elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land development. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://coastal.er.usgs.gov/data-release/doi-F7WD3ZFC",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.4718511c-4fd3-48b7-8afb-38d7b9dcb83a.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_4718511c-4fd3-48b7-8afb-38d7b9dcb83a |
| keyword |
[
"2005",
"ALPS",
"ASCII XYZ (Bare earth)",
"Airborne Lidar Processing System",
"DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR",
"EAARL",
"Experimental Advanced Airborne Research Lidar",
"Gulf of Mexico",
"LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION",
"LIDAR > LIGHT DETECTION AND RANGING",
"OCEAN > COASTAL PROCESSES > BARRIER ISLANDS",
"OCEAN > COASTAL PROCESSES > BEACHES",
"OCEAN > COASTAL PROCESSES > SHORELINE DISPLACEMENT",
"Post-Hurricane Rita",
"Texas",
"USGS National Assessment Project",
"USGS:4718511c-4fd3-48b7-8afb-38d7b9dcb83a",
"elevation",
"geomorphology",
"laser altimetry",
"lidar",
"remote sensing",
"topography"
]
|
| modified | 2020-10-13T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -96.75464069, 28.13933861, -93.82688369, 29.70153369 |
| theme |
[
"Geospatial"
]
|
| title | EAARL Coastal Topography–Texas, Post-Hurricane Rita, 2005: Bare Earth |
