2012 USACE Great Lakes Topobathy Lidar: Lake Michigan
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49736 | Updated: August 9, 2022 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2012 USACE Great Lakes Topobathy Lidar: Lake Michigan, https://www.fisheries.noaa.gov/inport/item/49736.
Full Citation Examples
These files contain classified topographic and bathymetric lidar data as unclassified valid topographic data (1), valid topographic data classified as ground (2), invalid topographic data classified as lowpoints (7), valid bathymetric data (11), and valid topographic data acquired with the bathymetric sensor (14). Classes 1, 2, and 7 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards, while classes 11 and 14 are classes specific to the NOAA Digital Coast Data Access Viewer (DAV).These data were collected with a RIEGL VQ-480 airborne lidar system along the Lake Michigan shoreline.
Data coverage generally extends along the shoreline from the waterline to 500 meters onshore. The VQ-480 sensor has a pulse repetition rate of 150 kHz at near infrared laser wavelength. Native lidar data are not generally in a format accessible to most Geographical Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be exported to standard formats and imported into GIS software for visualization and further analysis. Horizontal positions, provided in Geographic Coordinates in decimal degrees, are referenced to the NAD83 (2011) Epoch 2010 datum. Vertical elevations in meters are also referenced to this datum (GRS80 ellipsoidal height). The 3-D position data are sub-divided into a series of LAS files. The National Geodetic Surveys (NGS) GEOID03 model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). The 3-D position data are sub-divided into a series of LAS files, each covering approximately 5 kilometers of shoreline.
Note: The NOAA Office for Coastal Management was unable to determine the exact dates of collection due to corrupt GPS times in at least of the LAS files. Classifications listed from the original metadata above may have changed during processes at NOAA OCM.
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
-
Simple download of data files.
None
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. These data depict the heights at the time of the survey and are only accurate for that time.
Controlled Theme Keywords
elevation
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-87.9458693° W,
-84.6843231741° E,
46.1156698822° N,
41.5996674° S
2012-09-02
2012-09-03
2012-09-07
2012-09-08
2012-09-09
2012-09-10
2012-09-12
2012-09-13
2012-09-14
2012-09-23
2012-09-25
2012-09-26
2012-09-27
2012-09-28
2012-09-29
2012-10-01
2012-10-02
2012-10-03
2012-10-06
2012-10-15
2012-10-16
2012-10-17
2012-10-18
2012-10-19
2013-11-05
2013-11-06
2013-11-11
2013-11-18
2013-11-26
Item Identification
Title: | 2012 USACE Great Lakes Topobathy Lidar: Lake Michigan |
---|---|
Short Name: | gl2012_usace_lakemichigan_m2644_metadata |
Status: | Completed |
Publication Date: | 2014-07-02 |
Abstract: |
These files contain classified topographic and bathymetric lidar data as unclassified valid topographic data (1), valid topographic data classified as ground (2), invalid topographic data classified as lowpoints (7), valid bathymetric data (11), and valid topographic data acquired with the bathymetric sensor (14). Classes 1, 2, and 7 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards, while classes 11 and 14 are classes specific to the NOAA Digital Coast Data Access Viewer (DAV).These data were collected with a RIEGL VQ-480 airborne lidar system along the Lake Michigan shoreline. Data coverage generally extends along the shoreline from the waterline to 500 meters onshore. The VQ-480 sensor has a pulse repetition rate of 150 kHz at near infrared laser wavelength. Native lidar data are not generally in a format accessible to most Geographical Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be exported to standard formats and imported into GIS software for visualization and further analysis. Horizontal positions, provided in Geographic Coordinates in decimal degrees, are referenced to the NAD83 (2011) Epoch 2010 datum. Vertical elevations in meters are also referenced to this datum (GRS80 ellipsoidal height). The 3-D position data are sub-divided into a series of LAS files. The National Geodetic Surveys (NGS) GEOID03 model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). The 3-D position data are sub-divided into a series of LAS files, each covering approximately 5 kilometers of shoreline. Note: The NOAA Office for Coastal Management was unable to determine the exact dates of collection due to corrupt GPS times in at least of the LAS files. Classifications listed from the original metadata above may have changed during processes at NOAA OCM. |
Purpose: |
These data were collected as a part of the NCMP to depict the elevations ABOVE AND/OR BELOW the water. |
Notes: |
10381 |
Supplemental Information: |
A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2644/supplemental/gl2012_usace_lakemichigan_m2644.kmz |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
ISO 19115 Topic Category |
elevation
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Maintenance Frequency: | As Needed |
Data Presentation Form: | las |
Entity Attribute Overview: |
LiDAR points in LAZ format (Classes 1,2,7,9,11,14) |
Entity Attribute Detail Citation: |
none |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX, NOAA, the Office for Coastal Management or its partners. |
Support Roles
Data Steward
Date Effective From: | 2014-07-02 |
---|---|
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
Date Effective From: | 2014-07-02 |
---|---|
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
Date Effective From: | 2014-07-02 |
---|---|
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
Date Effective From: | 2014-07-02 |
---|---|
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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -87.9458693 | |
---|---|---|
E° Bound: | -84.6843231741 | |
N° Bound: | 46.1156698822 | |
S° Bound: | 41.5996674 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-02 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-03 |
Extent Group 1 / Time Frame 3
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-07 |
Extent Group 1 / Time Frame 4
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-08 |
Extent Group 1 / Time Frame 5
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-09 |
Extent Group 1 / Time Frame 6
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-10 |
Extent Group 1 / Time Frame 7
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-12 |
Extent Group 1 / Time Frame 8
Time Frame Type: | Discrete |
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Start: | 2012-09-13 |
Extent Group 1 / Time Frame 9
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-14 |
Extent Group 1 / Time Frame 10
Time Frame Type: | Discrete |
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Start: | 2012-09-23 |
Extent Group 1 / Time Frame 11
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-25 |
Extent Group 1 / Time Frame 12
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-26 |
Extent Group 1 / Time Frame 13
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-27 |
Extent Group 1 / Time Frame 14
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-28 |
Extent Group 1 / Time Frame 15
Time Frame Type: | Discrete |
---|---|
Start: | 2012-09-29 |
Extent Group 1 / Time Frame 16
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-01 |
Extent Group 1 / Time Frame 17
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-02 |
Extent Group 1 / Time Frame 18
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-03 |
Extent Group 1 / Time Frame 19
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-06 |
Extent Group 1 / Time Frame 20
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-15 |
Extent Group 1 / Time Frame 21
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-16 |
Extent Group 1 / Time Frame 22
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-17 |
Extent Group 1 / Time Frame 23
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-18 |
Extent Group 1 / Time Frame 24
Time Frame Type: | Discrete |
---|---|
Start: | 2012-10-19 |
Extent Group 1 / Time Frame 25
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-05 |
Extent Group 1 / Time Frame 26
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-06 |
Extent Group 1 / Time Frame 27
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-11 |
Extent Group 1 / Time Frame 28
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-18 |
Extent Group 1 / Time Frame 29
Time Frame Type: | Discrete |
---|---|
Start: | 2013-11-26 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2644; |
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. These data depict the heights at the time of the survey and are only accurate for that time. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2644 |
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Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
Distribution 2
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2644/index.html |
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Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
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URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov |
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URL Type: |
Online Resource
|
URL 3
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2644/supplemental/gl2012_usace_lakemichigan_m2644.kmz |
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Name: | Browse Graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | kmz |
Description: |
This graphic shows the coverage of the 2012 USACE Lake Michigan lidar. |
Activity Log
Activity Log 1
Activity Date/Time: | 2016-05-23 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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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
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Data Quality
Horizontal Positional Accuracy: |
The data point positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.50 m; Quantitative Value: 0.50 meters, Test that produced the value: RMSE 95% Conf. Units in meters. |
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Vertical Positional Accuracy: |
The data point positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.15 m; Quantitative Value: 0.15 meters, Test that produced the value: RMSE 95% Conf. Units in meters. |
Completeness Report: |
This data set covers the spatial extent of bathymetric and topographic lidar data obtained during this survey. |
Conceptual Consistency: |
Differences between a DEM created from the lidar data representing bare ground and the ground truth point data is unbiased and within +/- 15 cm (RMSE) in flat terrain and within +/-30 cm (RMSE) in hilly terrain |
Lineage
Process Steps
Process Step 1
Description: |
The flightline LAS files are imported into GeoCue [V7.0.3.5], which is a geospatial workflow production and management software tool employed by JALBTCX to perform and monitor production of data products. Upon import into GeoCue, the flightline LAS files are divided into a series of boxes, each of which are 1500 meters in length and width. A customized classification macro, built upon the TerraScan [V11] module within Microstation V8i, classifies valid topographic data as ground points (2) and unclassified points (1). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the algorithm ground surface instead of manually reclassifying those points. The final classification results are comprised of individual lidar points with classifications of ground (2) or unclassified (1). They are partitioned into a series of 5km delivery boxes, one Classified LAS file per box. The format of the file is LAS version [1.2]. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), 21 (valid topographic data acquired with the bathymetric sensor), 27 (invalid topographic and bathymetric data), 29 (valid bathymetric data) |
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Process Step 2
Description: |
The NOAA Office for Coastal Management (OCM) received the topographic/bathymetric files in LAS format from USACE. The files contained lidar easting, northing, elevation, intensity, return number, etc. Some GPS times in the LAS files appeared to be corrupt. the data was received in Geographic Coordinates (decimal degrees). The vertical coordinates were referenced to IGLD85 in meters. using the Geoid03 model. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. Class 29 points (bathymetry) were reclassified to Class 11 (bathymetry). 2. Class 21 points (green topography) were reclassified to Class 14 (green topography). 3. Tile '2012_NCMP_MI_Michigan_05_Geoclassified_IGLD' was found to have erroneous points outside of the header's bounding box. These points were removed using LAStools' lasclip software. 4. The LAS files were then converted from IGLD85 orthometric heights to NAD83 (GRS80) ellipsoidal heights using NOAA's VDatum v3.3. 5. On March 30, 2015 tiles were added from an additional delivery from USACE following the same process. |
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Process Date/Time: | 2015-03-30 00:00:00 |
Catalog Details
Catalog Item ID: | 49736 |
---|---|
GUID: | gov.noaa.nmfs.inport:49736 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:21+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: | OCMP |
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 |