2004 US Army Corps of Engineers (USACE) Post-Hurricane Ivan Topo/Bathy Lidar: Alabama,
These data were collected by the Joint Airborne Lidar Bathymetry Technical Center
of Expertise using the CHARTS system. The data includes hydrographic and topographic
data. This data was collected Post-Hurricane Ivan in Alabama and Florida.
Cite this dataset when used as a source.
|Search and Download
|| Distributor information not available
| Point of Contact
Documentation links not available.
|Data Presentation Form:
|| Digital image
|Dataset Progress Status
|Data Update Frequency:
|| As needed
||As noted in the "Time_Period_of_Content" section, these data were collected between
November and December of 2004. A finer breakdown of the data is given below for specific
geographic bounds: Baldwin County, AL to Walton County, FL - 200411 to 200412. Powell
Lake to Little St George Island, FL - 200411 to 200412. New Port Richey to Cape Romano,
FL - 20041107 to 20041116. Jupiter to Miami, FL - 20041122 to 20041203. Cocoa Beach
to Jupiter, FL - 20041121 to 20041208. Fernandina Beach to New Smyrna Beach - 20041206
||The data were collected to depict the elevations above and below water along the immediate
||2004-11-01 to 2004-12-31
|Spatial Reference System:
|Spatial Bounding Box Coordinates:
|Spatial Coverage Map:
- Jupiter Inlet
| Use Constraints
|| No constraint information available
|| Fee information not available.
|| Lineage statement not available.
| Processing Steps
- The NOAA Coastal Services Center (CSC) received ASCII files from USACE. CSC performed
the following processing on the data to make it available within the Lidar Data Retrieval
Tool (LDART): 1. The data were projected using the General Cartographic Transformation
Package. 2. The values where extracted from the ascii files and converted to the LAS
- For data management purposes, the NOAA Coastal Services Center (CSC) converted the
data to: 1. LAS format from LDART bin format 2. Ellipsoid elevations from orthometric
(NAVD88) elevations using Geoid 03.
- Times had originally been stored as POSIX seconds when converted to LAS. This was
switched to adjusted GPS time (GPS seconds - 1e9) to conform to the LAS 1.2 standard.
The data were also converted to LAZ format.
- The NOAA National Geophysical Data Center (NGDC) received lidar data files via ftp
transfer from the NOAA Coastal Services Center. The data are currently
being served via NOAA CSC Digital Coast at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are archived in LAS or LAZ
The LAS format is an industry standard for LiDAR data developed by the American Society
of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless compressed version
LAS developed by Martin Isenburg (http://www.laszip.org/). The data are exclusively
in geographic coordinates (either NAD83 or ITRF94). The data are referenced vertically
the ellipsoid (either GRS80 or ITRF94), allowing for the ability to apply the most
up to date geoid model when transforming to orthometric heights.
Metadata Last Modified: 2014-03-14
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