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Short Citation:
Office for Coastal Management, 2022: 2020 GLOS Underwater Lidar: Lake Huron, MI, https://www.fisheries.noaa.gov/inport/item/64644.

Item Identification

Title: 2020 GLOS Underwater Lidar: Lake Huron, MI
Short Name: 2020 underwater lidar m9302
Status: Completed
Creation Date: 2020-11-18
Abstract:

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.

Purpose:

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.

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category elevation

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES
Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > SEA FLOOR
UNCONTROLLED
None Lake Huron

Instrument Keywords

Thesaurus Keyword
UNCONTROLLED
Global Change Master Directory (GCMD) Instruments Keywords Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Lidar/Laser Sounders > LIDAR

Physical Location

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

Data Set Information

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

None

Data Set Credit: Great Lakes Observing System; ASI Marine

Support Roles

Data Steward

CC ID: 1065714
Date Effective From: 2021-05-12
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: 1065713
Date Effective From: 2021-05-12
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
Contact Instructions:

Email coastal.info@noaa.gov

Metadata Contact

CC ID: 1066744
Date Effective From: 2021-05-20
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

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1065711
W° Bound: -82.372932
E° Bound: -82.372336
N° Bound: 43.1470679999
S° Bound: 43.146755
Description

In Lake Huron.

Extent Group 1 / Time Frame 1

CC ID: 1065712
Time Frame Type: Range
Start: 2020-11-16
End: 2020-11-18

Spatial Information

Spatial Resolution

Horizontal Distance: 1.0 Centimeter

Reference Systems

Reference System 1

CC ID: 1065717

Coordinate Reference System

CRS Type: Geographic 3D
EPSG Code: EPSG:6319
EPSG Name: NAD83(2011)
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

None

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 1066729
Start Date: 2021-05-20
End Date: Present
Download URL: https://coast.noaa.gov/htdata/lidar4_z/geoid18/data/9302
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2021-05-12 - Present)
Description:

Data in NAVD88 (Geoid18) orthometric heights, geographic coordinates for bulk download.

File Type: LAZ

Distribution 2

CC ID: 1065718
Start Date: 2021-05-12
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:id=9302
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2021-05-12 - Present)
Description:

Custom output created with the Digital Coast Data Access Viewer. Projections, datums, file formats, etc, can be changed.

File Type: Zip

URLs

URL 1

CC ID: 1066740
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9302/supplemental/RH20-018-GLOS-Laser_trials_summary.pdf
Name: Contractor Project Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Project report from ASI Group. This metadata was based on the information in the report.

URL 2

CC ID: 1066741
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9302/supplemental/2020_huron_underwater_lidar_m9302.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: kmz
Description:

Polygon showing the area of data.

Data Quality

Accuracy:

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.

Lineage

Sources

cleaned data

CC ID: 1066733
Contact Role Type: Originator
Contact Type: Organization
Contact Name: ASI Group
Publish Date: 2020-11-18

Raw data

CC ID: 1066731
Contact Role Type: Originator
Contact Type: Organization
Contact Name: ASI Group
Source Contribution:

Raw laser scan data collected underwater in Lake Huron.

Process Steps

Process Step 1

CC ID: 1065720
Description:

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.

Process Date/Time: 2020-11-18 00:00:00

Process Step 2

CC ID: 1066730
Description:

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.

Process Date/Time: 2020-11-18 00:00:00
Source: Raw data

Process Step 3

CC ID: 1066732
Description:

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.

Process Date/Time: 2021-05-20 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov
Source: cleaned data

Process Step 4

CC ID: 1066734
Description:

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.

Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov

Catalog Details

Catalog Item ID: 64644
GUID: gov.noaa.nmfs.inport:64644
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2021-05-11 18:45+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2022-01-10 20:09+0000
Metadata Record Published: 2021-05-20
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2022-05-21