2018-2019 NOAA NGS Topobathy Lidar DEM Hurricane Irma Delivery 1: Miami to Key Largo, FL

The NOAA Hurricane Irma Florida Keys Topobathymetric LiDAR Delivery 1 area data were collected by Quantum Spatial, Inc. (QSI) using three Riegl systems: a Riegl VA880G+, a Riegl VQ880GII, and a Riegl VQ880GH. Delivery 1 acquisition dates spanned from 20181120-20190323 in 23 missions. The final classified LiDAR data were transformed from ellipsoid elevations to Geoid12b elevations and used to create topobathymetric DEMs in ERDAS Imagine (*.img) format with a 1m pixel resolution. Ground (2), bathymetric bottom (40), and submerged objects (43) classified points were used in DEM creation. The Delivery 1 digital elevation model (DEM) dataset consists of a bathymetric void clipped bare earth model and an interpolated bare earth model. The 100 meter buffered project area consists of approximately 1,381,270 acres and stretches from the eastern coast of Miami south and westward to the Marquesas Keys. The NOAA Hurricane Irma Florida Keys Topobathymetric LiDAR Delivery 1 area covers 285,529 acres of the full project boundary. DEM files were compiled in 5000 m x 5000 m tiles and clipped to the project boundary. This Delivery 1 dataset is comprised of 70 5000 m x 5000 m DEM tiles.
1 - unclassified
2 - ground
7 - noise
40 - bathymetric bottom or submerged topography
41 - water surface
43 - submerged feature
45 - water column
46 - overlap bathy bottom - temporally different from a separate lift
71 - unclassified associated with areas of overlap bathy bottom/temporal bathymetric differences
72 - ground associated with areas of overlap bathy bottom/temporal bathymetric differences
81 - water surface associated with areas of overlap bathy bottom/temporal bathymetric differences
85 - water column associated with areas of overlap bathy bottom/temporal bathymetric differences
1 Overlap - edge clip 
			
Please note that classifications 46,71,72,81, and 85 associated with temporal bathymetric differences have only undergone automated classification and have not been manually reviewed. 
			
This data set also includes LiDAR intensity values, number of returns, return number, time, and scan angle. The 100 meter buffered project area consists of approximately 1,381,270 acres and stretches from the eastern coast of Miami south and westward to the Marquesas Keys. The NOAA Hurricane Irma Florida Keys Topobathymetric LiDAR Delivery 1 area covers 285,529 acres of the full project boundary. LAS files were compiled in 500 m x 500 m tiles. This Delivery 1 dataset is comprised of 5,065 - 500 m x 500 m LAS tiles.

Tags: aircraft, bathymetry, bathymetry/seafloor topography, bathymetry/topography, beach, coastal bathymetry, coastal elevation, coastal processes, continent, dem, digital elevation model, doc/noaa/nos/ngs, earth science, erosion, florida, florida keys, land surface, laser, lidar, light detection and ranging, national geodetic survey, national ocean service, ngs lidar, noaa, north america, oceans, sea floor, terrain elevation, topography, u.s. coastline, u.s. department of commerce, united states, united states of america, vertical location
Organization: National Oceanic and Atmospheric Administration, Department of Commerce