2013-2015 USACE NCMP Topobathy Lidar DEM: Lake Huron (MI)

Metadata also available as

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

U.S. Army Corps of Engineers (USACE), JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)

Originator:

Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)

Publication_Date: 20171015

Title: 2013-2015 USACE NCMP Topobathy Lidar DEM: Lake Huron (MI)

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM)

Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=7380

Online_Linkage:

https://coast.noaa.gov/htdata/raster2/elevation/USACE_MI_Lake_Huron_DEM_2013_7380

Description:

Abstract:: These files contain rasterized topobathy lidar elevations generated from data collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Horizontal positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 National Adjustment of 2011 (NAD83 NA2011). Vertical positions are referenced to the NAD83 NA11 ellipsoid and provided in meters. The National Geodetic Survey's (NGS) GEOID12A model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). Once converted to orthometric heights, the data are then converted to the International Great Lakes Datum of 1985 (IGLD85) using the VDatum program from NOAA (National Oceanic and Atmospheric Administration). The 3-D position data are used to generate a series of gridded file products, which are tiled into quarter-quads or 5km boxes. The grid file index is provided by the shape file, mi_huron_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, effort, area name, "Box" number and product type. An example file name is "2013_NCMP_MI_Huron_01_BareEarth_1mGrid.tif", where 2013 is the year of data collection, NCMP is the project under which data were collected, MI_Huron is the area of data collection, 01 is the "Box" number, and BareEarth 1mGrid is the product type.
The data were ingested as received from the USACE into the NOAA Digital Coast. Custom processing by the Data Access Viewer may have changed the tiling and naming.
Purpose:: These data were collected as a part of the NCMP to depict the elevations above and below the water in the Michigan coastal zone.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20130705
Ending_Date: 20150813

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -84.7515869141
East_Bounding_Coordinate: -82.4208984375
North_Bounding_Coordinate: 46.2581176758
South_Bounding_Coordinate: 43.0061035156

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD Earth Sciences Keywords
Theme_Keyword: OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
Theme_Keyword: SOLID EARTH > GEOMORPHOLOGY > COASTAL LANDFORMS/PROCESSES
Theme_Keyword: OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
Theme_Keyword: EARTH SCIENCE > OCEANS >COASTAL PROCESSES > COASTAL ELEVATION
Theme_Keyword: OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Theme_Keyword: HUMAN DIMENSIONS > LAND USE/LAND COVER > LAND USE CLASSES
Theme_Keyword: LAND SURFACE > TOPOGRAPHY> TERRAIN ELEVATION

Theme:

Theme_Keyword_Thesaurus: GCMD Data Center Keywords v7
Theme_Keyword: DOD/USARMY/USACE/SAM/MOBILE/OPJ/JALBTCX > Department of Defense
Theme_Keyword: United States Army
Theme_Keyword: United States Army Corps of Engineers
Theme_Keyword: Mobile District
Theme_Keyword: Spatial Data Branch
Theme_Keyword: Joint Airborne Lidar Bathymetry Technical Center of Expertise

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword:: Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
Theme_Keyword: National Coastal Mapping Program (NCMP)
Theme_Keyword: IWG-OCM
Theme_Keyword: 1mRaster
Theme_Keyword: Bathymetry
Theme_Keyword: U.S. Army Corps of Engineers (USACE)
Theme_Keyword: Topography
Theme_Keyword: Coastal Zone Mapping Imaging Lidar (CZMIL)
Theme_Keyword: BareEarth
Theme_Keyword: Mobile District

Theme:

Theme_Keyword_Thesaurus: GCMD Instrument Keywords v7
Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: location
Theme_Keyword: elevation
Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry
Theme_Keyword: Topography
Theme_Keyword: Classified LAS
Theme_Keyword:: Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
Theme_Keyword: Mobile District
Theme_Keyword: IWG-OCM
Theme_Keyword: National Coastal Mapping Program (NCMP)
Theme_Keyword: U.S. Army Corps of Engineers (USACE)
Theme_Keyword: Coastal Zone Mapping Imaging Lidar (CZMIL)

Place:

Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: United States
Place_Keyword: Michigan
Place_Keyword: Lake Huron
Place_Keyword: MI

Place:

Place_Keyword_Thesaurus: GCMD Location Keywords v7
Place_Keyword: VERTICAL LOCATION > SEA FLOOR
Place_Keyword: VERTICAL LOCATION > LAND SURFACE

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2013
Temporal_Keyword: 2014
Temporal_Keyword: 2015

Access_Constraints:

These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures.

Use_Constraints:

These data depict the heights at the time of the survey and are only accurate for that time. Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) would be appreciated in any publications or derived products. The data herein, including but not limited to geographic data, tabular data, analytical data, electronic data structures or files, are provided "as is" without warranty of any kind, either expressed or implied, or statutory, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the data is assumed by the user. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the U.S. Army Corps of Engineers, Mobile District Office, Spatial Data Branch be liable for direct, indirect, incidental, consequential or special damages of any kind, including, but not limited to, loss of anticipated profits or benefits arising out of use of or reliance on the data. The Spatial Data Branch does not accept liability for any damages or misrepresentation caused by inaccuracies in the data or as a result of changes to the data caused by system transfers or other transformations or conversions, nor is there responsibility assumed to maintain the data in any manner or form.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: JALBTCX

Contact_Position: Data Production Manager

Contact_Address:

Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US

Contact_Voice_Telephone: 228-252-1121

Contact_Voice_Telephone: 228-252-1131

Contact_Facsimile_Telephone: 228-252-1133

Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil

Hours_of_Service: 8 am - 5 pm Monday through Friday

Browse_Graphic:

Browse_Graphic_File_Name:: https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/4844/supplemental/mi2013_USACE_NCMP_lakehuron_m4844.kmz
Browse_Graphic_File_Description:: This graphic shows the lidar coverage for the 2013-2015 USACE NCMP lidar project covering a part of Lake Huron.
Browse_Graphic_File_Type: kmz

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: These data are not attributed.

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: N/A
Attribute_Accuracy_Explanation: These data are not attributed.

Logical_Consistency_Report:

During inspection and QC of the lidar point cloud, flightline to flightline elevation differences met the CZMIL sensor specifications.

Completeness_Report:

This data set covers the spatial extent of topographic lidar data obtained during this survey.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of CZMIL in the joint topo/bathy mode of operation is +/-1 m, 2 sigma.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 1.0
Horizontal_Positional_Accuracy_Explanation: +/- 1 m, 2 sigma

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The data positions were obtained using post processed KGPS methods. The vertical accuracy of CZMIL in the joint topo/bathy mode of operation is +/-15 cm, 2 sigma. In the hyrodgraphic mode of operation, the vertical accuracy of CZMIl is sqrt[0.3^2 + (0.013 x depth)^2] m, 2 sigma in depths of 0-30 m.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: 0.10
Vertical_Positional_Accuracy_Explanation: +/- 10 cm RMSE

Lineage:

Process_Step:

Process_Description:

These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The system collects topo/bathy lidar data at 10 kHz and RGB imagery at 2 Hz. 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 510 equipment. All raw data streams are transferred to the office for downloading and processing in CZMIL's Hydro Fusion 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 software then converts all valid data from ellipsoid to orthometric heights based on the NGS' GEOID12A model and exports valid lidar data as a series of unclassified LAS files.

Process_Date: 20130705

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: JALBTCX

Contact_Position: Data Production Manager

Contact_Address:

Address_Type: mailing and physical
Address: 7225 Stennis Airport RD., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US

Contact_Voice_Telephone: 228-252-1121

Contact_Voice_Telephone: 228-252-1131

Contact_Facsimile_Telephone: 228-252-1133

Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil

Hours_of_Service: 8 am - 5 pm Monday through Friday

Process_Step:

Process_Description:

LAS files are imported into GeoCue V2012.1.27.7, 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, A customized classification macro, built upon the TerraScan V13 module within Microstation V8i, classifies valid topobathy data as ground points (2), unclassified points (1), and bathymetric points (29). 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's "ground" surface instead of manually reclassifying those points. They are partitioned into a series of 5km or quarter quad 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), and 29 (valid bathymetric data). The data are then shifted vertically to the International Great Lakes Datum of 1985 (IGLD85) using the VDatum program from NOAA (National Oceanic and Atmospheric Administration).

Process_Date: 20140903

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: JALBTCX

Contact_Position: Data Production Manager

Contact_Address:

Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US

Contact_Voice_Telephone: 228-252-1121

Contact_Voice_Telephone: 228-252-1131

Contact_Facsimile_Telephone: 228-252-1133

Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil

Hours_of_Service: 8am - 5pm Monday through Friday

Process_Step:

Process_Description:

Data classified as ground points (2) and bathymetric points (29) in the las files are converted to a grid by generating a triangulated irregular network (TIN) and then extracting the grid node elevations from the TIN surface. The origin point of the grid is located at a horizontal position whose value is evenly divisible by the 1m grid resolution such that rasters from subsequent surveys have common cell boundaries. JALBTCX uses Quick Terrain Modeler V8 to perform this operation utilizing the following parameters; "Legacy Triangulation", "Max Sample Excursion - 30000", "Max Triangle Side - 30000", "Radius - none", "Tolerance - 1", and "Tiling Settings Snap to Grid (Expand)." The grid is exported from Quick Terrain Modeler as an ESRI ASCII Z grid file. Utilizing an in-house python script within ESRI ArcMap V10.1, the ASCII Z grid file is converted to a tiff-format raster file whose projection is defined as "The North American Datum of 1983 (2011)." The raster is then multiplied against a corresponding 1m Grid mask raster, a mask image produced from JALBTCX's 1m Grid, in ESRI's Raster Calculator to remove interpolated areas where data does not exist.

Process_Date: 20140905

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: JALBTCX

Contact_Position: Data Production Manager

Contact_Address:

Address_Type: mailing and physical
Address: 7225 Stennis Airport Rd., STE 100
City: Kiln
State_or_Province: MS
Postal_Code: 39556
Country: US

Contact_Voice_Telephone: 228-252-1131

Contact_Voice_Telephone: 228-252-1121

Contact_Facsimile_Telephone: 228-252-1133

Contact_Electronic_Mail_Address: JALBTCX@usace.army.mil

Hours_of_Service: 8am - 5pm Monday through Friday

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel
Row_Count: 3998
Column_Count: 10277
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 8.9831528411952133e-009
Longitude_Resolution: 8.9831528411952133e-009
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D NAD 1983 2011
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Office for Coastal Management

Contact_Address:

Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1202

Contact_Electronic_Mail_Address: coastal.info@noaa.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Custom_Order_Process:

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=7380
The data set is dynamically generated based on user-specified parameters.

Metadata_Reference_Information:

Metadata_Date: 20170920

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Office for Coastal Management

Contact_Address:

Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1202

Contact_Electronic_Mail_Address: coastal.info@noaa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.9.32 on Wed Sep 20 12:41:36 2017