64644 2020 underwater lidar m9302 Data Set Published / External 37231 Lidar Project Completed 2020-11-18 Elevations were collected using an underwater laser scanner (lidar) in Lake Huron, MI from November 16 to 18, 2020. Data were geospatially adjusted to match a multibeam survey conducted at the same time. Positional accuracy was not accessed. Data represent the best estimate of the bottom surface. Utilize remote inspection technologies and laser technologies to collect high resolution point cloud data at potential features of interest as identified in the multi-beam survey. Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES Spatial Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > SEA FLOOR Instrument Global Change Master Directory (GCMD) Instrument Keywords LIDAR > Light Detection and Ranging Office for Coastal Management Charleston SC USA Data Set Elevation None Planned Model (digital) None Great Lakes Observing System; ASI Marine Data Steward 2021-05-12 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2021-05-12 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Email coastal.info@noaa.gov Metadata Contact 2021-05-20 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource -82.372932 -82.372336 43.1470679999 43.146755 In Lake Huron. Range 2020-11-16 2020-11-18 1 Centimeter Yes Geographic 3D EPSG:6319 NAD83(2011) NAD83 (National Spatial Reference System 2011) GRS 1980 6378137 298.257222101 1 Geodetic Latitude Lat degree north 2 Geodetic Longitude Lon degree east 3 Elipsoidal height h metre up Unclassified None None None None https://coast.noaa.gov/dataviewer/#/lidar/search/where:id=9302 2021-05-12 Organization NOAA Office for Coastal Management Custom output created with the Digital Coast Data Access Viewer. Projections, datums, file formats, etc, can be changed. Zip Zip https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9302/index.html 2021-05-12 Organization NOAA Office for Coastal Management Data in NAVD88 (Geoid18) orthometric heights, geographic coordinates for bulk download. LAZ LAS/LAZ - LASer Zip https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9302/supplemental/2020_huron_underwater_lidar_m9302.kmz Browse Graphic Browse Graphic kmz Polygon showing the area of data. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9302/supplemental/RH20-018-GLOS-Laser_trials_summary.pdf Contractor Project Report Online Resource pdf Project report from ASI Group. This metadata was based on the information in the report. The positional accuracy has not been tested. The lidar were matched to multi-beam data and are expected to have similar accuracy and may match IHO special order. Raw data Organization ASI Group Originator Raw laser scan data collected underwater in Lake Huron. cleaned data Organization ASI Group Originator 2020-11-18 1 Multiple locations were tried to test the ROV and laser system. The Detroit River, St. Clair River, and Lake Erie shoreline were found to lack the necessary water clarity. Lake Huron was tried in locations identified using navigation charts. A target was located that appeared to be a large cargo shipwreck. The City of Genoa was a grain freighter that sunk in 1911. The basic structure of the wreck remains on the bed of Lake Huron heavily deteriorated. The ROV was launched at the site and successfully collected laser data of the wreck. Ambient light in the water limited the usable range of the laser, so passes were collected over some areas only. 2020-11-18T00:00:00 2 A review of the data collected during the inspections was completed in the ASI office. The 3D files were converted to point clouds and erroneous noise was removed. The LiDAR files were adjusted in position to best file the sonar data collected of the wreck. The assembly of this report was then completed. The report includes documentation methodology, equipment descriptions, observations, observation images, and 3D dataset. Data files are provided of the various areas survey by MBES in meters located in UTM zone 17 as collected and in elevation referenced to NAVD88 and adjusted using Geoid 2018-CONUS. The laser data is provided in LAS format as collected as well as in cleaned XYZ files that have been best-fit positioned to match the MBES data. 2020-11-18T00:00:00 Raw data 3 Data were delivered to the Great Lakes Observing System (GLOS) and subsequently passed to NOAA Digital Coast for distribution. Both the cleaned text files and the raw LAS files were received. The raw LAS files did not have sufficient information to do the geometric corrections that had been done to the cleaned text files and were not further processed. The cleaned text files were converted to LAS/LAZ format using LAStools txt2las. The points are all tagged as class 2 (ground) as it is presumed that the cleaning step removed non-ground/bathymetry. This metadata record was created from the report delivered by ASI Group to GLOS. No other metadata was received. GLOS was consulted regarding any accuracy assessments or contractual spatial accuracy requirements. There were none. The accuracy is assumed to be on par with the multi-beam echo sounder data collected at the same time, but that also does not appear to have an accuracy assessment. 2021-05-20T00:00:00 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource cleaned data 4 Data were converted from UTM zone 17 NAD83(2011) orthometric NAVD88 coordinates to NAD83(2011) ellipsoid heights in geographic coordinates. This allows the distribution through the NOAA Digital Coast Data Access Viewer, which may do further coordinate system changes. Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource gov.noaa.nmfs.inport:64644 Kirk Waters 2021-05-11T18:45:15 SysAdmin InPortAdmin 2023-10-17T16:12:34 2022-03-16 Office for Coastal Management OCM 1002 Public No No 2022-03-16 1 Year 2023-03-16