2002 Virginia-Maryland USGS/NASA Airborne Lidar Assessment of Coastal Erosion (ALACE) Project for the US Coastline

This data set includes data collected in May, 2002, and covers coastline in Virginia and Maryland. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port 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 aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. The ATM system is a single return green laser and water returns are from the surface. A significant amount of the flight lines from this data set are over water.

Data and Resources

Additional Info

Field Value
Last Updated November 2, 2017, 21:54
Created September 18, 2017, 19:21
access_constraints ["Use Constraints: This data was collected for the purposes of research. Any conclusions drawn from analysis of this information are not the responsibility of NASA, USGS, NOAA or the Office for Coastal Management. This data is likely to contain returns from the water surface and vegetation. No processing has been done to remove returns from water or vegetation. 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.", "Access Constraints: None"]
bbox-east-long -75.0367
bbox-north-lat 38.4385
bbox-south-lat 37.8419
bbox-west-long -75.5578
contact-email coastal.info@noaa.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2017-08-15"}]
frequency-of-update notPlanned
guid
licence ["\nThis data was collected for the purposes of research. Any conclusions drawn from analysis of this information are not the responsibility of NOAA, the Office for Coastal Management, or its partners.\n"]
metadata-date 2017-10-27
metadata-language
progress completed
resource-type dataset
responsible-party [{"name": "NOAA Office for Coastal Management", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-75.5578, 37.8419], [-75.0367, 37.8419], [-75.0367, 38.4385], [-75.5578, 38.4385], [-75.5578, 37.8419]]]}
spatial-data-service-type
spatial-reference-system
spatial_harvester true