eng
utf8
dataset
dataset
JALBTCX
Data Production Manager
228-252-1121
228-252-1131
228-252-1133
7225 Stennis Airport Rd., STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
8am- 5pm Monday through Friday
pointOfContact
2016-12-14
ISO 19139 Geographic Information - Metadata - Implementation Specification
2007
2
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5830
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row
4087
0.000009
area
true
false
-78.011218 33.841581
-78.011218 33.878361
-77.958752 33.878361
-77.958752 33.841581
-77.984985 33.859971
center
6318
EPSG
8.2.6
2016 USACE Post-Matthew Topobathy Lidar: Southeast Coast (VA, NC, SC, GA and FL)
2016-12-01
creation
2016-12-01
publication
2016-12-04
revision
U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)
originator
JALBTCX
Kiln, MS
publisher
mapDigital
These files contain rasterized topobathy lidar elevations generated from data collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system.CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. Horizontal positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 National Adjustment of 2011 (NAD83 (2011)). Vertical positions are referenced to the NAD83 (2011) ellipsoid and provided in meters. The National Geodetic Survey's (NGS) GEOID12B model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). The 3-D position data are sub-divided into a series of LAS files, which are tiled into 1-km by 1-km boxes defined by the Military Grid Reference System. The LAS file index is provided by the shape files, "MGRS_1km_17R.shp ", and the numbers used to identify files are in the "Box" field of the shape file. The data file naming convention is based on the year, effort, area name, "Box" number and data product type. An example file name is "2016_PostMatthew_FL_17RMN8758_1mGrid.tif", where 2016 is the year of data collection, PostMatthew is the effort under which data were collected, FL is the area of data collection, 17RMN8758 is the "Box" number and 1mGrid is the data product type.
This data was collected as part of USACE Post-Hurricane Matthew emergency response efforts to assess elevations above and below water along the coasts of Virginia, North Carolina, South Carolina, Georgia and Florida.
completed
JALBTCX
Data Production Manager
228-252-1131
228-252-1121
228-252-1133
7225 Stennis Airport Rd., STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
8 am - 5 pm Monday through Friday
pointOfContact
asNeeded
VERTICAL LOCATION > LAND SURFACE
VERTICAL LOCATION > SEA FLOOR
place
GCMD Location Keywords v7
United States
Virginia
North Carolina
South Carolina
Georgia
Florida
place
Geographic Names Information System
October
November
December
2016
temporal
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
EARTH SCIENCE > OCEANS >COASTAL PROCESSES > COASTAL ELEVATION
SOLID EARTH > GEOMORPHOLOGY > COASTAL LANDFORMS/PROCESSES
OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
LAND SURFACE > TOPOGRAPHY> TERRAIN ELEVATION
HUMAN DIMENSIONS > LAND USE/LAND COVER > LAND USE CLASSES
theme
GCMD Earth Sciences Keywords v7
Bathymetry
Topography
Digital Surface Model (DSM)
Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
Mobile District
Post-Matthew
U.S. Army Corps of Engineers (USACE)
Coastal Zone Mapping Imaging Lidar (CZMIL)
theme
oceans
imageryBaseMapsEarthCover
elevation
theme
ISO 19115 Topic Category
DOD/USARMY/USACE/SAM/MOBILE/OPJ/JALBTCX
theme
GCMD Data Center Keywords v7
LIDAR > LIGHT DETECTION AND RANGING
theme
GCMD Instrument Keywords v7
These data depict the heights at the time of the survey and are only accurate for that time. Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products. The data herein, including but not limited to geographic data, tabular data, analytical data, electronic data structures or files, are provided "as is" without warranty of any kind, either expressed or implied, or statutory, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the data is assumed by the user. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the U.S. Army Corps of Engineers, Mobile District Office, Spatial Data Branch be liable for direct, indirect, incidental, consequential or special damages of any kind, including, but not limited to, loss of anticipated profits or benefits arising out of use of or reliance on the data. The Spatial Data Branch does not accept liability for any damages or misrepresentation caused by inaccuracies in the data or as a result of changes to the data caused by system transfers or other transformations or conversions, nor is there responsibility assumed to maintain the data in any manner or form.
These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures.
These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures.
vector
eng
utf8
elevation
imageryBaseMapsEarthCover
location
oceans
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552
ground condition
2016-11-08T00:00:00
2016-11-08T00:00:00
true
-78.011218
-77.958752
33.841581
33.878361
image
Band_1
31.585155
-1.193
Unified Code of Units of Measure
32
JALBTCX
Data Production Manager
228-252-1121
228-252-1133
7225 Stennis Airport Rd. STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
Please make data requests via email to JALBTCX@usace.army.mil.
distributor
Requests for large amounts of data are shipped on an external hard drive. Costs include the shipping cost to return the hard drive to JALBTCX.
LAS
no compression applied
dataset
During inspection and QC of the lidar point cloud, flightline to flightline elevation differences met the CZMIL sensor specifications.
This data set covers the spatial extent of topographic lidar data obtained during this survey.
CZMIL topographic data - Compiled to meet 1 m horizontal accuracy at 95% confidence level. CZMIL bathymetric data - Compiled to meet 3.5 + 0.05d m horizontal accuracy at 95% confidence level, d is depth.
CZMIL topographic data - Compiled to meet 19.6 cm vertical accuracy at 95% confidence level. CZMIL bathymetric shallow FOV data - Compiled to meet SQRT((0.25^2) +((0.0075d)^2)) m vertical accuracy at 95% confidence level, d is depth. CZMIL bathymetric deep FOV data - Compiled to meet SQRT((0.30^2) +((0.013d)^2)) m vertical accuracy at 95% confidence level, d is depth.
These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The system collects topobathy lidar data at 10 kHz and RGB imagery at 2 Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V 610 equipment. All raw data streams are transferred to the office for downloading and processing in CZMIL’s HydroFusion software. Aircraft position data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE, anomalous data are flagged as invalid and have the withheld bit set. PFM_ABE software then converts all valid data from ellipsoid to orthometric heights based on the NGS' GEOID12B model and exports valid lidar data as a series of unclassified LAS files.
2016-11-08T00:00:00
JALBTCX
Data Production Manager
228-252-1121
228-252-1131
228-252-1133
7225 Stennis Airport RD., STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
8 am - 5 pm Monday through Friday
processor
LAS files are imported into TerraScan V13 module within Microstation V8i, classifies valid topobathy data as ground points (2) and unclassified points (1), and valid bathymetric points (29). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the algorithm’s “ground” surface instead of manually reclassifying those points. They are partitioned into a series of 1-km delivery boxes, one Classified LAS file per box. The format of the file is LAS version 1.2. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data).
2016-12-12T00:00:00
JALBTCX
Data Production Manager
228-252-1121
228-252-1131
228-252-1133
7225 Stennis Airport Rd., STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
8am - 5pm Monday through Friday
processor
Data classified as unclassified points (1), ground points (2), and bathymetric points (29) in the las files are converted to a grid by generating a triangulated irregular network (TIN) and then extracting the grid node elevations from the TIN surface. The origin point of the grid is located at a horizontal position whose value is evenly divisible by the 1m grid resolution such that rasters from subsequent surveys have common cell boundaries. JALBTCX uses Quick Terrain Modeler V8 to perform this operation utilizing the following parameters; “Adaptive Triangulation, Max Z”, "Max Sample Excursion - 5”, “Max Triangle Side – 10”, and “Tiling Settings Snap to Grid (Expand)." The grid is exported from Quick Terrain Modeler as an ESRI ASCII Z grid file. Utilizing an in-house python script within ESRI ArcMap V10.2, the ASCII Z grid file is converted to a tif-format raster file whose projection is defined as “The North American Datum of 1983 (2011).”
2016-12-14T00:00:00
JALBTCX
Data Production Manager
228-252-1121
228-252-1131
228-252-1133
7225 Stennis Airport Rd., STE 100
Kiln
MS
01556
US
JALBTCX@usace.army.mil
8am- 5pm Monday through Friday
pointOfContact
notPlanned