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Metadata Identifier: gov.noaa.csc.maps:2007_NWFWMD_Gadsden_m538
MD_DataIdentification
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2007 Northwest Water Manangement District Lidar: Gadsden County, Florida
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LIDAR-derived binary (.las) files containing points classified as bare-earth
and canopy (first return) were produced for the 2007 Northwest Florida Water Management
District - Gadsden County, Florida lidar mapping project. The files were provided
in a scheme of FDEM-derived 5,000 x 5,000 foot (1500 x 1500 meter) tiles. Horizontal
mapping units are in UTM meters, vertical mapping units are in U.S. survey feet. The
total mapping area covers 535 square miles of Gadsden County, Florida.
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SV_Identification
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2007 Northwest Water Manangement District Lidar: Gadsden County, Florida |
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Ground Control |
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Lidar Collection Report |
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Lidar QA/QC Report |
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None |
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North American Datum 1983 |
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resourceProvider |
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
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Citation URL |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/NWFWMD_QaQc_Final_Report.pdf |
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NOAA CSC (originator) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
originator |
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NOAA CSC (publisher) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
publisher |
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NOAA CSC(distributor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
distributor |
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NOAA CSC (processor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
processor |
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Doug Jacoby |
Merrick & Company |
Director of Projects / Project Manager |
doug.jacoby@merrick.com |
processor |
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EPSG Registry |
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European Petroleum Survey Group |
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publisher |
http://www.epsg-registry.org/ |
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Merrick & Company |
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publisher |
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Merrick & Company |
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originator |
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Mike Sutherland(author) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
author |
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Mike Sutherland |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
distributor |
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Mr. John Crowe |
Northwest Florida Water Management District |
Director, Division of Resource Management |
john.crowe@nwfwmd.state.fl.us |
pointOfContact |
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Northwest Florida Water Management District (NWFWMD) |
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originator |
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Pamela Grothe |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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processor |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/NWFWMD_Gadsden_County_Lidar_Mapping_Report.pdf |
Lidar Collection Report |
Report containing sensor information, data collection parameters, etc. |
information |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/NWFWMD_QaQc_Final_Report.pdf |
Lidar QA/QC Report |
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information |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.
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search |
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http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
NAD83 |
Link to Geographic Markup Language (GML) description of reference system. |
information |
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Ellipsoid in Meters |
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urn:ogc:def:crs:EPSG::4269 |
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Bounding Box |
Temporal Extent |
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-84.908454 |
-84.304350 |
30.718384 |
30.374728 |
2007-09-08 |
2007-09-24 |
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-84.908454 |
-84.304350 |
30.718384 |
30.374728 |
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2007-09-08 |
2007-09-24 |
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Lidar Use Limitation |
These data depict the elevations at the time of the survey and are only
accurate for that time. 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. Any conclusions
drawn from analysis of this information are not the responsibility of NOAA
or any of its partners. These data are NOT to be used for navigational purposes.
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Ellipsoid |
Ellipsoid in Meters |
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NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
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Lidar Collection Report |
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crossReference |
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Lidar QA/QC Report |
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crossReference |
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Ground Control |
2007-10-01 |
Source Contribution: Ground Control. GPS control network for LIDAR
acquisition and processing.Source Type: spreadsheet
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2007-01-01T00:00:00 |
LIDAR data was collected using Merrick's ALS50 Phase 2 sensor. The
raw data was verified in MARS software for complete coverage of the project area,
and boresighted to align the flightlines. Raw data files were parsed into manageable
client-specific tiles. These tiles were then processed through automated filtering
that separates the data into different classification groups: error points, ground
points, and canopy/building points. The data was next taken into a graphic environment
to reclassify the erroneous points that may remain in the LIDAR point cloud after
auto filter.
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2011-05-05T00:00:00 |
The NOAA Coastal Services Center (CSC) received files in LAS format.
The files contained LiDAR intensity and elevation measurements. CSC performed the
following processing on the data for data storage purposes and Digital Coast provisioning:
1. The data were converted from projected UTM (NAD83, Zone 16) coordinates to geographic
(NAD83) coordinates 2. The data were converted from NAVD88 heights to ellipsoid heights
using Geoid03 3. The LAS header fields were sorted by latitude and updated
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2011-06-10T00:00:00 |
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 format. 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 of 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 to the ellipsoid (either GRS80 or ITRF94), allowing for
the ability to apply the most up to date geoid model when transforming to orthometric
heights.
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