2016 NOAA NGS Topobathy Lidar DEM: Key West (FL)

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
Publication_Date: 20170315
Title: 2016 NOAA NGS Topobathy Lidar DEM: Key West (FL)
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM)
Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=3266
Online_Linkage:
https://coast.noaa.gov/htdata/raster2/elevation/NGS_FL_key_west_DEM_2016_6366
Online_Linkage: https://coast.noaa.gov/dataviewer
Online_Linkage: https://coast.noaa.gov/dataregistry
Online_Linkage: https://coast.noaa.gov
Description:
Abstract:
These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a Riegl VQ820G system. The data were acquired from 20160419 - 20160425. The data includes topobathy data in an LAS 1.2 format file classified as 1 - unclassified, 2 - ground, 7 - topo noise, 26 - bathymetric bottom or submerged topography, 27 - water surface, 28 - submerged object and 30 - International Hydrographic Organization (IHO) S-57 objects. A digital elevation model was then derived from the lidar points.
Purpose:
This lidar data are an ancillary product of NOAA's Coastal Mapping Program (CMP), created through a wider Integrated Ocean and Coastal Mapping initiative to increase support for multiple uses of the data. It is not intended for mapping, charting, or navigation. In addition, it will be used for ongoing research efforts for testing and developing standards for airborne lidar.
Supplemental_Information:
Data include all lidar returns. Outliers or false returns (e.g., returns from birds, atmospheric particles, and/or system noise) may be present in the data. An automated ground classification algorithm was used to determine bare earth point classification. It should be noted that not all returns were correctly classified; therefore the user should examine for acceptability.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20160419
Ending_Date: 20160425
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.864
East_Bounding_Coordinate: -81.669
North_Bounding_Coordinate: 24.743
South_Bounding_Coordinate: 24.448
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry/Topography
Theme_Keyword: Bathymetry
Theme_Keyword: Topography
Theme_Keyword: LiDAR
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > LiDAR
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword:
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
Theme_Keyword: EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
Theme:
Theme_Keyword_Thesaurus: NOAA NOS Harvest Catalog
Theme_Keyword: CoRIS
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place_Keyword: Florida
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword: OCEAN BASIN > Atlantic Ocean > Gulf of Mexico > Florida
Place_Keyword: COUNTRY/TERRITORY > United States of America > Florida
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 20160419
Temporal_Keyword: 20160425
Access_Constraints: None
Use_Constraints:
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.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
Contact_Position: Chief, Remote Sensing Division
Contact_Address:
Address_Type: mailing and physical
Address: 1315 East West Highway, N/NGS3
Address: SSMC-3 8142
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: 301-713-2663
Browse_Graphic:
Browse_Graphic_File_Name:
https://coast.noaa.gov/htdata/lidar2_z/geoid12b/data/6246/supplemental/fl2016_ngs_topobathy_key_west_m6246.kmz
Browse_Graphic_File_Description:
This graphic shows the lidar footprint for the 2016 NOAA NGS topobathy lidar project of Key West in Florida.
Browse_Graphic_File_Type: kmz
Data_Set_Credit:
We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation.
Native_Data_Set_Environment: OS Independent
Data_Quality_Information:
Logical_Consistency_Report: Not applicable
Completeness_Report: Data covers the 1620 tiles (500m x 500m tiles).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than plus or minus 1.0 m.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 1.0
Horizontal_Positional_Accuracy_Explanation: 2 Sigma
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than plus or minus 0.15 m.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0.15
Vertical_Positional_Accuracy_Explanation: 1 Sigma
Lineage:
Process_Step:
Process_Description:
Data were processed to an initial LAS format using the Riegl RiProcess software. The Applanix POSPac software was utilized for GPS and inertial processing, and GeoCue, Terrasolid, and LP360 software for data visualization, 3D editing, and export to final LAS file. Data were processed in NAD83 horizontal and vertical datum.
Process_Date: 20170201
Process_Step:
Process_Description:
The NOAA Office for Coastal Management (OCM) received files in las format. The files contained lidar elevation and intensity measurements of Key West, Florida. The data were in UTM Zone 17 coordinates and ellipsoid elevations in meters. The data classifications for the data are: 1 - unclassified, 2 - ground, 7 - topo noise, 26 - bathymetric bottom or submerged topography, 27 - water surface, 28 - submerged object and 30 - International Hydrographic Organization (IHO) S-57 objects. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. Eliminated elevation outliers below -150 meters ellipsoid height; 2. Converted from UTM Zone 17 to geographic coordinates; 3. Sorted by gps time; 4. Reclassified data class 29 to 28; 5. Compressed the data using laszip.
Process_Date: 20170213
Process_Step:
Process_Description:
The NOAA Office for Coastal Management used the point cloud data to derive a digital elevation model (DEM) for the area. The DEM was created by using the ground and bathy points processed through these steps: 1) reprojected to UTM zone 17 coordinates and orthometric heights via geoid12b; 2) retiled with a buffer using lastile from LAStools; 3) tiles rasterized with las2dem from LAStools; 4) tiles mosaiced into a single DEM with gdalbuildvrt and gdal_translate.
Process_Date: 20170821
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 17
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -81.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.0
Ordinate_Resolution: 1.0
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983 (2011)
Ellipsoid_Name: GRS80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Datum of 1983 (2011; Geoid12b)
Altitude_Resolution: 0.000100
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Country: USA
Contact_Voice_Telephone: (843)740-1202
Contact_Electronic_Mail_Address: coast.info@noaa.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Geodetic Survey, the Office for Coastal Management, or its partners.
Custom_Order_Process:
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6366
Metadata_Reference_Information:
Metadata_Date: 20170822
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Country: US
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.32 on Thu Oct 12 13:19:57 2017