gov.noaa.nmfs.inport:57325
eng
UTF8
dataset
Elevation
Office for Coastal Management
resourceProvider
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
EPSG::5703
EPSG::6348
2019 NOAA OCM Unmanned Aerial System Lidar DEM: Great Bay NERR
nh2019_great_bay_dem_m8845
2019-08-27
creation
publication
NOAA/NMFS/EDM
57325
https://www.fisheries.noaa.gov/inport/item/57325
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8844/supplemental/NOAA_Great_Bay_LiDAR_Report.pdf
WWW:LINK-1.0-http--link
Dataset report
Link to data set report.
download
https://coast.noaa.gov/dataviewer/
WWW:LINK-1.0-http--link
NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.
download
In April 2019, Quantum Spatial (QSI) was contracted by The National Oceanic and Atmospheric Administration (NOAA) Office for Coastal Management (OCM) in partnership with the Great Bay National Estuarine Research Reserve (GBNERR) to collect high resolution Light Detection and Ranging (LiDAR) data in the spring of 2019 for four research sites within the GBNERR in New Hampshire. These four sites are “Sentinel Sites” within the GBNERR where vegetation and elevation parameters have previously been continuously monitored and surveyed using traditional methods that require extensive person hours and manual labor.
The bare earth digital elevation model (DEM) represents the earth's surface with all vegetation and anthropogenic features removed. It is derived from NIR LiDAR data using TIN processing of the ground point returns. Some elevation values have been interpolated across areas in the ground model where there is no elevation data (e.g. over water, under dense vegetation). Air Shark collected the NOAA Great Bay UAS LiDAR data, on behalf of Quantum Spatial, for the NOAA Office for Coastal Management between 05/01/2019 and 05/09/2019.
In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from, are also available. A link to the lidar point data metadata record is provided in the Related Items section of this metadata record.
Data were collected to aid NOAA & GBNERR in assessing the viability of using non-invasive remote sensing survey techniques to monitor these sentinel sites and reduce the impacts of traditional survey techniques on the marsh environment.
NOAA OCM
completed
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
custodian
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8844/supplemental/nh2019_great_bay_m8844.kmz
This graphic displays the footprint for this lidar data set.
KML
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
theme
Global Change Master Directory (GCMD) Science Keywords
17.0
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW HAMPSHIRE
VERTICAL LOCATION > LAND SURFACE
place
Global Change Master Directory (GCMD) Location Keywords
17.0
LIDAR > Light Detection and Ranging
instrument
Global Change Master Directory (GCMD) Instrument Keywords
17.2
Airplane > Airplane
platform
Global Change Master Directory (GCMD) Platform Keywords
17.2
DEM
Estuarine
NERR
National
Research
Reserve
UAS
UAV
beach
erosion
theme
DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
DEMs
project
InPort
otherRestrictions
Cite As: Office for Coastal Management, [Date of Access]: 2019 NOAA OCM Unmanned Aerial System Lidar DEM: Great Bay NERR [Data Date Range], https://www.fisheries.noaa.gov/inport/item/57325.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: None
otherRestrictions
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.
otherRestrictions
Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of Quantum Spatial, Great Bay NERR, NOAA, the Office for Coastal Management or its partners.
unclassified
2019 NOAA OCM Unmanned Aerial System Lidar: Great Bay NERR
NOAA/NMFS/EDM
57318
crossReference
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
57325
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/57325.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
grid
.5
eng; US
elevation
-70.921316
-70.828822
43.039191
43.140211
Site 2 | Currentness: Ground Condition
2019-05-01
Site 1 | Currentness: Ground Condition
2019-05-07
Site 3 | Currentness: Ground Condition
2019-05-08
Site 4 | Currentness: Ground Condition
2019-05-09
Zip
Zip
GeoTIFF
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
distributor
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8845
WWW:LINK-1.0-http--link
Customized Download
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.
download
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/NOAA_Great_Bay_UAS_DEM_2019_8845/index.html
WWW:LINK-1.0-http--link
Bulk Download
Bulk download of data files in GeoTiff format, UTM Zone 19 coordinates and in orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document.
download
dataset
Vertical Positional Accuracy
Non-vegetated Vertical Accuracy was assessed using 20 ground check points. These check points were not used in the calibration or post processing of the LiDAR point cloud data.
The Non-vegetated Vertical Accuracy (NVA) of this dataset, tested at 95% confidence level is 0.082 m. Please see the LiDAR data report for a discussion of the statistics related to this dataset.
Completeness Report
Flight plans are designed with sufficient sidelap to ensure there are no gaps between flightlines. Shaded relief images have been visually inspected for gaps.
LiDAR data has been collected and processed for all areas within the project study area.
Data was examined at a 1:2000 scale. Relative accuracy of the flightlines was assessed in Microstation using TerraMatch.
In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. TINing the points produces large triangles and hence the elevations may be less accurate within such areas. Elevation values for open water surfaces should be considered approximate due to the increase of laser noise seen over water, frequent lack of returns, and the overall dynamic nature of water.
Air Shark collected Light Detection and Ranging (LIDAR) data on behalf of Quantum Spatial in Great Bay NERR for the NOAA Office for Coastal Management (OCM).
NOAA OCM received the data and ingested it into the Digital Coast Data Access Viewer for distribution.
Acquisition. Air Shark collected the NOAA Great Bay UAS LiDAR data on behalf of Quantum Spatial between 05/01/2019 and 05/09/2019. The survey used a Riegl MiniVUX-1UAV laser system mounted in a DJI Matrice 600. Ground level GPS and aircraft IMU were collected during the flight. Sensor: Riegl MiniVUX-1UAV Maximum returns: 5 Nominal pulse density: 8 pulses/m^2 Nominal pulse spacing: 0.35 m AGL: 60 m Speed: 7.775 knots FOV: 90 degrees Scan frequency: 40.38 hz Pulse rate: 100 kHz Pulse width: 9.6 cm x 3.0 cm Wavelength: 905 nm Pulses in air mode: Linear Mode LiDAR Beam divergence: 1.6 mrads x 0.5 mrads Swath width: 120 m Overlap: 50%
2019-05-09T00:00:00
1. Flightlines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. 2. Laser point return coordinates were computed using POSPac MMS v.8.3, RiProcess v.1.8.5, TerraScan v.19.005, TerraMatch v.19.002 and TerraModeler v.19.005 software based on independent data from the LiDAR system, IMU, and aircraft. 3. The raw LiDAR file was assembled into flightlines per return with each point having an associated x, y, and z coordinate. 4. Visual inspection of swath to swath laser point consistencies within the study area were used to perform manual refinements of system alignment. 5. Custom algorithms were designed to evaluate points between adjacent flightlines. Automated system alignment was computed based upon randomly selected swath to swath accuracy measurements that consider elevation, slope, and intensities. Specifically, refinement in the combination of system pitch, roll, and yaw offset parameters optimize internal consistency. 6. Noise (e.g., pits and birds) was filtered using post-processing software, based on known elevation ranges and included the removal of any cycle slips. 7. Using TerraScan and Microstation, ground classifications utilized custom settings appropriate to the study area. 8. The corrected and filtered return points were compared to the ground survey points collected to verify the vertical accuracy. 9. TIN processing of the ground point returns was used to create this bare earth DEM.
2019-07-01T00:00:00
The NOAA Office for Coastal Management (OCM) received 4 files in img format from Quantum Spatial. Horizontal positions were provided in UTM Zone 19 NAD83(2011), meters coordinates. Vertical positions were provided in NAVD88 (Geoid12b) elevations and in meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes:
1. The data were converted to GeoTiff format and the projection and vertical datum EPSG codes were assigned..
2. The data were copied to https.
2019-08-28T00:00:00
Office for Coastal Management
processor