Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2022: 2008 US Army Corps of Engineers (USACE) National Coastal Mapping Program Topobathy Lidar: Lake Michigan, https://www.fisheries.noaa.gov/inport/item/50072.

Item Identification

Title: 2008 US Army Corps of Engineers (USACE) National Coastal Mapping Program Topobathy Lidar: Lake Michigan
Short Name: usace2008_mi_m518_metadata
Status: Completed
Publication Date: 2009
Abstract:

These files contain topographic and bathymetric lidar data collected by the Compact Hydrographic Airborne Rapid Total

Survey (CHARTS) system along the west coast of Michigan from Berrien County to Leelanau County, along the Lake Michigan

coastline from 28 July - 16 Sept 2008. Lidar intensity data was also collected.

CHARTS integrates topographic and bathymetric lidar sensors, a digital camera and a hyperspectral scanner on a

single remote sensing platform for use in coastal mapping and charting activities. Data coverage generally extends along the

coastline from the waterline inland 500 meters (topography) and offshore 1,000 meters or to laser extinction (bathymetry).

The topographic lidar sensor has a pulse repetition rate of 9 kHz at 1064 nm (near-infrared wavelength). The bathymetric lidar

sensor has a pulse repetition rate of 1 kHz at 532 nm (green wavelength). Native lidar data is 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 imported into GIS software for visualization and further analysis. Horizontal

positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 (NAD83).

Vertical positions are referenced to the NAD83 ellipsoid and provided in meters.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1111

Email: shoals-info@sam.usace.army.mil

Purpose:

These data were collected as a part of the National Coastal Mapping Program to depict the elevations above the water for the First Return,

Last Return, or Hydro in the Michigan coastal zone.

Notes:

10716

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
elevation
UNCONTROLLED
None ASCII XYZ
None CHARTS
None Intensity
None JALBTCX
None SHOALS
None U.S. Army Corps of Engineers

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2008
None August
None July
None September

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of JALBTCX, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products.

Support Roles

Data Steward

CC ID: 689225
Date Effective From: 2009
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: 689227
Date Effective From: 2009
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: 689228
Date Effective From: 2009
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: 689226
Date Effective From: 2009
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: 1138356
W° Bound: -86.838156
E° Bound: -85.915215
N° Bound: 44.989667
S° Bound: 41.748285

Extent Group 1 / Time Frame 1

CC ID: 1138355
Time Frame Type: Range
Start: 2008-07-28
End: 2008-09-16

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer;

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: 742892
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=518
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc.

Distribution 2

CC ID: 742893
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/518/index.html
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

Activity Log

Activity Log 1

CC ID: 689260
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 689259
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: 718676
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 742894
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500

Data Quality

Accuracy:

These data are not attributed. | Quantitative Value: N/A | Quantitative Test Explanation: These data are not attributed.

Horizontal Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75m.; Quantitative Value: 0.75 meters, Test that produced the value: 1 Sigma

Vertical Positional Accuracy:

The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20m.; Quantitative Value: 0.20 meters, Test that produced the value: 1 Sigma

Completeness Measure:

Cloud Cover: Unknown

Completeness Report:

Not provided

Conceptual Consistency:

The data provided in this file were tested against ground truth data. At these locations the lidar data matched within 0.20 meters,

and different flight line data agreed within 0.20 meters.

Lineage

Process Steps

Process Step 1

CC ID: 1138352
Description:

These data were collected using the CHARTS system. It is owned by the Naval Oceanographic Office and operated through contract.

The system collects topographic lidar data at 9kHz, bathymetric lidar data at 1kHz and RGB imagery at 1Hz. A CASI-1500 hyperspectral

line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a

combination of Novatel and POS A/V 410 equipment. All raw data streams are transferred to the office for downloading and processing in

SHOALS GCS software. Aircraft position data are processed using POSPac software and the results are combined with the lidar data to

produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE, anomalous data

are flagged as invalid. PFM_ABE's chartsLAS module then converts all valid data from ellipsoid to orthometric heights based on

the NGS' GEOID03 model and exports data as a series of first return topography (TF), last return topography (TL) and bathymetry (H)

ASCII files. The bathymetry files contain all of the returns from the bathymetric sensor which include returns both above and below

the water.

The National Geodetic Survey's (NGS) GEOID03 model was 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 were sub-divided into a series of ASCII file

products, with each covering approximately 5 kilometers of shoreline. The file index was provided by the shape file,

"mi_michigan_boxes.shp", and the numbers used to identify files are in the "Box" field of the shape file. The data file naming

convention is based on the year, project, area name, "Box" number and product type (topographic or bathymetric). An example file

name is "2008_NCMP_MI_Michigan_07_ASCII", where 2008 is the year of data collection, NCMP is the project under which data were

collected, MI_Michigan is the area of data collection, 07 is the "Box" number and ASCII is the product type. The ASCII columns

are Longitude, Latitude, UTM Zone, Easting, Northing, Elevation (orthometric), Elevation (ellipsoid), Date, Time, and Intensity.

Process Date/Time: 2009-01-01 00:00:00

Process Step 2

CC ID: 1138353
Description:

The NOAA Office for Coastal Management (OCM) received topo and hydro files in ASCII format. The files contained

LiDAR elevation and intensity measurements. The points were classed as 'never classified.' The data were provided in Geographic

coordinates and ellipsoidal heights and in orthometric heights. OCM performed the following processing to the ellipsoidal height

data to make it available within the Digital Coast:

1. LASEdit was used to convert the ASCII formatted files to las format.

2. The hydro points classification was changed from 'never classified' to class 11, 'bathymetry'. The topo points classification remains

as class 0, 'never classified'.

3. The LAS data were sorted by latitude and the headers were updated.

Process Date/Time: 2009-11-01 00:00:00

Catalog Details

Catalog Item ID: 50072
GUID: gov.noaa.nmfs.inport:50072
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:24+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