EAARL Coastal Topography-Sandy Hook 2007
type: Dataset
description: A first surface/bare earth elevation map (also known as a Digital Elevation Model, or DEM) of the Gateway National Recreation Area's Sandy Hook Unit in New Jersey was produced from remotely sensed, geographically referenced elevation measurements cooperatively by the U.S. Geological Survey (USGS), the National Park Service (NPS), 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 easily surveyed 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. For more information on Lidar science and the Experimental Advanced Airborne Research Lidar (EAARL) system and surveys, see http://ngom.usgs.gov/dsp/overview/index.php and http://ngom.usgs.gov/dsp/tech/eaarl/index.php .
issued: 2025-11-22T13:54:52.744531
modified: 20201013
spatial: Location
contact point: Organization
  fn: Amar Nayegandhi
keyword: airborne-lidar-processing-system
keyword: alps
keyword: altimetry
keyword: amerigeo
keyword: amerigeoss
keyword: bathymetry-and-elevation
keyword: ckan
keyword: digital-elevation-models
keyword: digital-surface-model
keyword: distributions
keyword: dsm
keyword: eaarl
keyword: elevation
keyword: experimental-advanced-airborne-research-lidar
keyword: gateway-national-recreation-area
keyword: geo
keyword: geoss
keyword: laser-altimetry
keyword: lidar
keyword: national
keyword: new-jersey
keyword: north-america
keyword: remote-sensing
keyword: sandy-hook
keyword: topographic-mapping
keyword: topography
keyword: united-states
theme: {geospatial}

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-08-07T10:54:08.790536
modified: 2025-11-22T13:54:52.728501
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.1b734f5f-f878-4add-a0be-05be1273c96d.xml
media type: text/xml

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-08-07T10:54:08.790542
modified: 2025-11-22T13:54:52.728915
access URL: http://pubs.usgs.gov/ds/393/data_files/be/
media type: application/http

US Migrating
type: Agent