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Short Citation:
Office for Coastal Management, 2022: 2017 NOAA NGS Topobathy Lidar DEM: Florida Keys Outer Reef, Block 04, https://www.fisheries.noaa.gov/inport/item/51529.

Item Identification

Title: 2017 NOAA NGS Topobathy Lidar DEM: Florida Keys Outer Reef, Block 04
Status: Completed
Publication Date: 2018-02-19
Abstract:

These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a Riegl VQ880G system. The data were acquired from 20170216 - 20170220. The data includes topobathy data in an LAS 1.2 format file classified as unclassified (1), ground (2), noise (7), bathymetric point (26), submerged object (29), and International Hydrographic Organization (IHO) S-57 object (30) in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. This data set may also include lidar intensity values and encoded RGB image values.

The DEM was created from the bathymetric points (class 26) using las2dem from LAStools and GDAL.

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.

Notes:

10203

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.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation
UNCONTROLLED
CoRIS Discovery Thesaurus Geographic Information > LiDAR
CoRIS Theme Thesaurus EARTH SCIENCE > Land Surface > Topography> Terrain Elevation
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
NOAA NOS Harvest Catalog CoRIS

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 20170216
None 20170220

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA
UNCONTROLLED
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Florida
CoRIS Place Thesaurus OCEAN BASIN > Atlantic Ocean > Florida

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: None Planned
Data Presentation Form: Model (digital)
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.

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.

Support Roles

Data Steward

CC ID: 719914
Date Effective From: 2017-10-27
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 719916
Date Effective From: 2017-10-27
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 719917
Date Effective From: 2017-10-27
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 719915
Date Effective From: 2017-10-27
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1151573
W° Bound: -80.289
E° Bound: -80.08
N° Bound: 25.807
S° Bound: 25.173

Extent Group 1 / Time Frame 1

CC ID: 1151572
Time Frame Type: Range
Start: 2017-02-16
End: 2017-02-20

Spatial Information

Spatial Representation

Representations Used

Grid: Yes
Vector: No

Grid Representation 1

CC ID: 719932
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: No

Axis Dimension 1

Dimension Type: Column
Size: 21000
Resolution Type: Length
Resolution: 1.0 Meter
Description:

Easting

Axis Dimension 2

Dimension Type: Row
Size: 68000
Resolution Type: Length
Resolution: 1.0 Meter
Description:

northing

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8480;

Data Access Constraints:

None

Data 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.

Distribution Information

Distribution 1

CC ID: 719937
Start Date: 2018-02-19
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8480
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2017-10-27 - Present)
Compression: Zip

URLs

URL 1

CC ID: 719920
URL: https://coast.noaa.gov/dataviewer
URL Type:
Online Resource

URL 2

CC ID: 719921
URL: https://coast.noaa.gov/digitalcoast/data/home.html
URL Type:
Online Resource

URL 3

CC ID: 719922
URL: https://coast.noaa.gov
URL Type:
Online Resource

URL 4

CC ID: 719923
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8412/supplemental/fl2017_ngs_keys_outer_reef_block04_m8412.kmz
Name: footprint
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

This graphic shows the lidar footprint for the 2017 NOAA NGS topobathy lidar project of the outer reef keys block04 in Florida.

Activity Log

Activity Log 1

CC ID: 719925
Activity Date/Time: 2017-11-07
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 719924
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 719926
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Technical Environment

Description:

OS Independent

Data Quality

Horizontal Positional Accuracy:

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 Value: 1.0 meters, Test that produced the value: 1 Sigma

Vertical Positional Accuracy:

The data positions were obtained using post processed KGPS methods. Data used to test the lidar was collected with Static GPS Observations and compared against the published data. The vertical accuracy of the data is better than plus or minus 0.15 m.; Quantitative Value: 0.15 meters, Test that produced the value: 1 Sigma

Completeness Report:

Data covers the 1690 tiles (500m x 500m tiles).

Conceptual Consistency:

Not applicable

Lineage

Sources

2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04

CC ID: 1151562
Publish Date: 2017-11-04
Citation URL: https://www.fisheries.noaa.gov/inport/item/48180

Process Steps

Process Step 1

CC ID: 1151563
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/Time: 2017-10-27 00:00:00

Process Step 2

CC ID: 1151564
Description:

The NOAA Office for Coastal Management (OCM) received files in las format. The files contained lidar elevation and intensity measurements of the Florida outer keys block4. The data were in UTM Zone 17 coordinates and ellipsoid elevations in meters. The data classifications for the data are: unclassified (1), ground (2), noise (7), bathymetric point (26), submerged object (29), and International Hydrographic Organization (IHO) S-57 object (30) CM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. Converted from UTM Zone 17 to geographic coordinates 2. Sorted by gps time 3. Compressed the data using laszip

Process Date/Time: 2017-02-01 00:00:00

Process Step 3

CC ID: 1151565
Description:

The point cloud data were converted to UTM zone 17N coordinates and tiled into 10 million point LAZ files or smaller using lastile from LAStools. Tiles incorporated a buffer to allow DEM creation one tile at a time.

Process Date/Time: 2018-02-12 00:00:00
Process Contact: Office for Coastal Management (OCM)
Source: 2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04

Process Step 4

CC ID: 1151566
Description:

Tiled point cloud files were interpolated to raster tifs using las2dem. This uses a triangulated irregular network approach.

Process Date/Time: 2018-02-12 00:00:00
Process Contact: Office for Coastal Management (OCM)
Source: 2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04

Process Step 5

CC ID: 1151567
Description:

DEM TIFF tiles were mosaiced into a single file using GDAL utilities gdalbuildvrt and gdal_translate.

Process Date/Time: 2018-02-12 00:00:00
Process Contact: Office for Coastal Management (OCM)

Acquisition Information

Instruments

Instrument 1

CC ID: 1151570
Identifier: Riegl VQ-880-G
Instrument / Gear: Instrument
Instrument Type: Topobathymetric lidar sensor
Description:

The RIEGL VQ-880-G is a fully integrated airborne laser scanning system for combined hydrographic and topographic surveying.

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04

Point cloud used to create this data.

Catalog Details

Catalog Item ID: 51529
GUID: gov.noaa.nmfs.inport:51529
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2018-02-12 13:14+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2022-03-16
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16