2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Topographic Lidar: Louisiana Coast, Lake Pontchartrain and Mississippi Barrier Islands

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)

Originator:

Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)

Publication_Date: 201109

Title:

2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Topographic Lidar: Louisiana Coast, Lake Pontchartrain and Mississippi Barrier Islands

Publication_Information:

Publication_Place: Charleston, SC

Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)

Online_Linkage:

http://www.csc.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1065

Online_Linkage: http://www.csc.noaa.gov/lidar

Online_Linkage: http://www.csc.noaa.gov/

Online_Linkage: http://www.csc.noaa.gov/htdata/lidar1_z/geoid12a/data/1065

Description:

Abstract:

This Light Detection and Ranging (LiDAR) classified (ASPRS LAS classifications) dataset is a topographic survey conducted for the Task Order 007 Aerial Survey 2010 project. This data was produced for the US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX). The LiDAR point cloud was flown at a density sufficient to support a maximum final post spacing of 1 point per meter. 3001 International Inc. acquired flightlines between April 9 - 26, 2010. The Task Order 007 Aerial Survey 2010 was collected under the guidance of a Professional Mapper/Surveyor. The area of coverage includes portions of the coastline of Louisiana in the counties of Lafourche, Plaquemines, and Terrebonne, and along the south coast of Lake Pontchartrain in Jefferson and St. Charles counties. The area of coverage for Mississippi includes the barrier islands in Harrison and Jackson counties.

Purpose:

Task Order 007 Aerial Survey 2010 project supports the US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) collection of data representing the post-hurricane condition of the beaches, barrier islands, and lakeshores along the coasts of southeast Louisiana, Lake Pontchartrain, and the Mississippi Barrier Islands.

Supplemental_Information:

A footprint of this data set may be viewed in Google Earth at: ftp://csc.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1065/supplemental/2010_USACE_JALBTCX_Louisiana_Mississippi_Lidar.kmz

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100409

Ending_Date: 20100426

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.777072

East_Bounding_Coordinate: -88.390472

North_Bounding_Coordinate: 30.264472

South_Bounding_Coordinate: 29.032926

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Bathymetry/Topography

Theme_Keyword: Elevation

Theme_Keyword: Height

Theme_Keyword: LAS V.1.2 LiDAR

Theme_Keyword: Topography

Theme_Keyword: Lidar

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States

Place_Keyword: Louisiana

Place_Keyword: Mississippi

Place_Keyword: Mississippi Barrier Islands

Place_Keyword: Lake Pontchartrain

Place_Keyword: Harrison County

Place_Keyword: Jackson County

Place_Keyword: Jefferson County

Place_Keyword: Lafourche County

Place_Keyword: Plaquemines County

Place_Keyword: St. Charles County

Place_Keyword: Terrebonne County

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 2010

Temporal_Keyword: April

Access_Constraints: None

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.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Northrop Grumman (formerly 3001 International Inc.)

Contact_Position: LiDAR Department

Contact_Address:

Address_Type: mailing and physical

Address: 5821 Rangeline Road Suite 101

City: Theodore

State_or_Province: Alabama

Postal_Code: 36582

Country: USA

Contact_Voice_Telephone: 251.443.6979

Contact_Electronic_Mail_Address: carlos.prieto@ngc.com

Hours_of_Service: 8:00 - 5:00 CDT

Browse_Graphic:

Browse_Graphic_File_Name:

ftp://csc.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1065/supplemental/2010_USACE_JALBTCX_Louisiana_Mississippi_Lidar.kmz

Browse_Graphic_File_Description:

This kmz file shows the lidar footprint for the 2010 USACE JALBTCX Lidar for portions of the coasts of Louisiana, Lake Pontchartrain, and the Mississippi barrier islands.

Browse_Graphic_File_Type: kmz

Data_Set_Credit:

US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)

Security_Information:

Security_Classification_System: Unclassified

Security_Classification: Unclassified

Security_Handling_Description: Unclassified

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000

Cross_Reference:

Citation_Information:

Originator: 3001 International Inc.

Publication_Date: Unknown

Publication_Time: Unknown

Title: Task Order 007 2010 Lidar survey

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Huntsville, AL

Publisher: 3001 International Inc.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The Task Order 007 survey 2010 project was collected under the guidance of a Professional Mapper/Surveyor. The data was collected at a density sufficient to support a maximum final post spacing of 1 point per meter.

Logical_Consistency_Report:

The Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey conducted Task Order 007 year 2010. This data was produced for US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX).

Completeness_Report:

The LAS files were flown at a density sufficient to support a maximum final post spacing of final post spacing of 1 point per meter.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

All ground control processing and adjustment is performed using published coordinate horizontal and vertical datums (e.g. NGS CORS). For deliverables, Corpscon for Windows Version 5.11.08 (geoid 03) was used for horizontal and vertical datum conversion as well as for coordinate system conversion purposes (e.g. UTM to State Plane).

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 0.5

Horizontal_Positional_Accuracy_Explanation: Not provided

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The accuracy assessment was performed using a standard method to compute the root mean square error (RMSE) based on a comparison of ground control points (GCP) and filtered LiDAR data points. Filtered LiDAR data has had vegetation and cultural features removed and by analysis represents bare-earth elevations. The RMSE figure was used to compute the vertical National Standard for Spatial Data Accuracy (NSSDA). Ground control was established by 3001, Inc. A spatial proximity analysis was used to select edited LiDAR data points contiguous to the relevant GCPs. A search radius decision rule is applied with consideration of terrain complexity, cumulative error, and adequate sample size. Cumulative error results from the errors inherent in the various sources of horizontal measurement. These sources include the airborne GPS, GCPs, and the uncertainty of the accuracy of the LiDAR data points. This accuracy is achieved prior to the sub-sampling that occurs through integration with the inertial measurement unit (IMU) positions that are recorded. It is unclear at this time whether the initial accuracy is maintained. The horizontal accuracy of the GCPs is estimated to be in the range of approximately 1 to 1.6 inches. Finally, sample size was considered. The specification for the National Standard for Spatial Data Accuracy is a minimum of 20 points to conduct a statistically significant accuracy evaluation (Minnesota Planning, 1999, Positional Accuracy Handbook, Minnesota Planning Land Management Information Center, St. Paul, Minnesota., p.3). Most statistical texts indicate that a minimum of 30 sample points provide a reasonable Approximation of a normal distribution. The intent of the NSSDA is to reflect the geographic area of interest and the distribution of error in the data set (Federal Geographic Data Committee, 1998, Geospatial National Standard for Spatial Data Accuracy, Federal Geographic Data Committee Secretariat, Reston, Virginia, p.3-4). Additional steps were taken to ensure the vertical accuracy of the LiDAR data including: Step 1: Precision Bore sighting (Check Edge-matching) Step 2: Compare the LiDAR data to the Field Survey (Field survey is to FEMA specifications and more stringent internal specifications) Step 3: Automated Filtering Step 4: Manual Editing (Quality Control)

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: 0.15

Vertical_Positional_Accuracy_Explanation: See Vertical Positional Accuracy Report

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: 3001 International Inc.

Publication_Date: Unknown

Publication_Time: Unknown

Title: Task Order 007 2010 Lidar

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Huntsville, AL

Publisher: 3001 International Inc.

Source_Scale_Denominator: 24000

Type_of_Source_Media: digital tape media

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20091119

Beginning_Time: unknown

Ending_Date: 20100229

Ending_Time: unknown

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: scale map

Source_Contribution:

The Task Order 007 2010 data was acquired for US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) and processed by 3001 International Inc.

Process_Step:

Process_Description:

The Airborne Global Position System (ABGPS), inertial measurement unit (IMU), and raw scans are collected during the LiDAR aerial survey. The ABGPS monitors the xyz position of the sensor and the IMU monitors the orientation of the aircraft. During the aerial survey laser pulses reflected from features on the surface and are detected by the receiver optics and collected by the data logger. GPS locations are based on data collected by receivers on the aircraft and base stations on the ground. The ground base stations are placed no more than 20 km radius from the flight survey area.

Process_Date: 20100701

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: 3001 International Inc.

Contact_Position: LiDAR Department

Contact_Address:

Address_Type: mailing and physical

Address: 501 Robert Blvd

Address: 2nd Floor

City: Slidell

State_or_Province: Louisiana

Postal_Code: 70458

Country: USA

Contact_Voice_Telephone: 251.443.6979

Hours_of_Service: 8:00 - 5:00 CDT

Process_Step:

Process_Description:

The ABGPS, IMU, and raw scans are integrated using proprietary software developed by Optech and delivered with the Optech ALTM Gemini System. The resultant file is in a LAS binary file format. The LAS file version 1.1 format can be easily transferred from one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are referenced to the Geographic NAD83 horizontal datum and NAVD88 vertical datum.

Process_Date: 20090527

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: 3001 International Inc.

Contact_Position: LiDAR Department

Contact_Address:

Address_Type: mailing and physical

Address: 501 Robert Blvd

Address: 2nd Floor

City: Slidell

State_or_Province: Louisiana

Postal_Code: 70458

Country: USA

Contact_Voice_Telephone: (985) 661 - 3001

Contact_Facsimile_Telephone: (985) 649 - 5082

Contact_Electronic_Mail_Address: lidar@3001inc.com

Hours_of_Service: 8:00 - 5:00 CDT

Process_Step:

Process_Description:

The data is subjected to rigorous QA/QC according to the 3001 Inc. Quality Control Plan and procedures. Very briefly, a series of quantitative and visual procedures are employed to validate the accuracy and consistency of the data. Ground control is established by 3001, Inc. and GPS-derived ground control points (GCPs) points in various areas of dominant and prescribed land cover. These points are coded according to landcover, surface material, and ground control suitability. A suitable number of points are selected for calculation of a statistically significant accuracy assessment as per the requirements of the National Standard for Spatial Data Accuracy. A spatial proximity analysis is used to select edited LiDAR data points within a specified distance of the relevant GCPs. A search radius decision rule is applied with consideration of terrain complexity, cumulative error, and adequate sample size. Accuracy validation and evaluation is accomplished using proprietary software to apply relevant statistical routines for calculation of Root Mean Square Error (RMSE) and the National Standard for Spatial Data Accuracy (NSSDA) according to Federal Geographic Data Committee (FGDC) specifications.

Process_Date: 20090527

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: 3001 International Inc.

Contact_Position: LiDAR Department

Contact_Address:

Address_Type: mailing and physical

Address: 501 Robert Blvd.

Address: 2nd Floor

City: Slidell

State_or_Province: Louisiana

Postal_Code: 70458

Country: USA

Contact_Voice_Telephone: (985) 661 - 3001

Contact_Facsimile_Telephone: (985) 649 - 5082

Contact_Electronic_Mail_Address: lidar@3001inc.com

Hours_of_Service: 8:00 - 5:00 CDT

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation:

Z:\Data01\Gustav_Ike\Phase_2_Deliverables\Lidar\2009_postike_29093f7c_2009_02_05_201.xml

Process_Date: 20100901

Process_Time: 16513500

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: Z:\Data01\Gustav_Ike\Phase_2_Deliverables\Lidar\WTXLAS.shp.xml

Process_Date: 20100901

Process_Time: 17282400

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation: C:\Aprojects\Metadata\TO-007_LAS

Process_Date: 20101005

Process_Time: 15422000

Process_Step:

Process_Description:

The NOAA Coastal Services Center (CSC) received classified data (ASPRS LAS classifications) in las format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing for data storage and Digital Coast provisioning purposes: 1. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03. 2. The LAS header fields were sorted by latitude and updated.

Process_Date: 201109

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Coastal Services Center

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Ave.

City: Charleston

State_or_Province: SC

Postal_Code: 29405

Country: US

Contact_Voice_Telephone: 843-740-1200

Contact_Electronic_Mail_Address: csc.info@noaa.gov

Cloud_Cover: 0

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0000001

Longitude_Resolution: 0.0000001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: Ellipsoid

Altitude_Resolution: 0.001

Altitude_Distance_Units: Meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Coastal Services Center

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Ave.

City: Charleston

State_or_Province: SC

Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1200

Contact_Electronic_Mail_Address: csc.info@noaa.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of USACE, JALBTCX, the Coastal Services Center, or its partners.

Custom_Order_Process:

This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/lidar

Metadata_Reference_Information:

Metadata_Date: 201109

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NOAA Coastal Services Center

Contact_Address:

Address_Type: mailing and physical

Address: 2234 South Hobson Ave.

City: Charleston

State_or_Province: SC

Postal_Code: 29405-2413

Contact_Voice_Telephone: 843-740-1200

Contact_Electronic_Mail_Address: csc.info@noaa.gov

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998