Topobathymetric Lidar Survey of Breton and Gosier Islands, Louisiana, January 16 and 18, 2014 - Point-cloud Data

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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. Geological Survey
Publication_Date: 20160325
Title:

Topobathymetric Lidar Survey of Breton and Gosier Islands, Louisiana, January 16 and 18, 2014 - Point-cloud Data

Geospatial_Data_Presentation_Form: Lidar point cloud (Classified LAZ)
Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/F70G3H6G

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/F70G3H6G

Description:

Abstract:

This dataset contains binary point-cloud data, produced from remotely sensed, geographically referenced topobathymetric measurements collected by Photo Science, Inc., encompassing the Breton and Gosier Island, LA study areas. The original area of interest was buffered by 100 meters to ensure complete coverage, resulting in approximately 75 square miles of lidar data. The Breton Island Lidar project called for the planning, acquisition, processing, and derivative products of topobathymetric lidar data, collected at a nominal pulse spacing (NPS) of 0.5-0.45 meters (4-5 points/square meter). Lidar acquisition was prioritized to coincide with the lowest tide possible. Water clarity was also assessed and deemed acceptable prior to acquisition flights. The data, in meters, are projected to UTM Zone 16 North and referenced horizontally to the NAD83 (2011) datum and vertically to the NAVD88 (GEOID12A) datum. The classified point-cloud data were delivered in LAS v1.2 format and the merged DEM was converted to a GeoTIFF file. Each LAS file contains data in a 1-kilometer by 1-kilometer tile named according to the US National Grid conventions. The final product was a LAZ file for Breton Island and another for Gosier Islands.

Purpose:

Lidar data were acquired to document the short and long-term changes of several barrier island systems in Louisiana. Digitized shorelines created from the Lidar data provide an accurate and measurable change in shape, area, and shoreline movement over short and long-term periods. Lidar elevations can provide a measurable change in the topography of barrier island systems to track pre- and post- storm elevation changes.

Supplemental_Information:

CONTRACTOR: Photo Science Inc. A Quantum Spatial Company Ground Control Points were acquired by the USGS.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20140116

Single_Date/Time:

Calendar_Date: 20140118

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -89.2175
East_Bounding_Coordinate: -89.0331
North_Bounding_Coordinate: 29.5802
South_Bounding_Coordinate: 29.4420

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:34cd2d14-4115-4228-be9d-b17e84bb6675

Theme:

Theme_Keyword_Thesaurus: General
Theme_Keyword: Lidar
Theme_Keyword: Light Detection and Ranging
Theme_Keyword: LAS Point Cloud
Theme_Keyword: Bathymetry
Theme_Keyword: Topobathy
Theme_Keyword: DEM
Theme_Keyword: Digital Elevation Model
Theme_Keyword: Intensity Image
Theme_Keyword: LAZ

Theme:

Theme_Keyword_Thesaurus: Global Change Master Science Directory (GCMD)
Theme_Keyword: LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
Theme_Keyword: OCEAN > COASTAL PROCESSES > BARRIER ISLANDS
Theme_Keyword: OCEAN > COASTAL PROCESSES > BEACHES
Theme_Keyword: OCEAN > COASTAL PROCESSES > SHORELINE DISPLACEMENT
Theme_Keyword:

DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR

Theme:

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

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: distributions
Theme_Keyword: bathymetry and elevation

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords
Theme_Keyword: altimetry
Theme_Keyword: topographic mapping

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: LIDAR
Theme_Keyword: topography
Theme_Keyword: digital elevation models

Place:

Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Breton Island
Place_Keyword: Gosier Islands
Place_Keyword: Plaquemines Parish
Place_Keyword: Louisiana
Place_Keyword: Gulf of Mexico

Stratum:

Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Bare Earth
Stratum_Keyword: Bathymetry

Temporal:

Temporal_Keyword_Thesaurus: General
Temporal_Keyword: 2014

Access_Constraints: None
Use_Constraints:

The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Joseph F. Terrano

Contact_Position:

Researcher 1 contracted through Cherokee Nation Technologies to the U.S. Geological Survey.

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8047
Contact_Facsimile_Telephone: 727 502-8182
Contact_Electronic_Mail_Address: jterrano@usgs.gov

Data_Set_Credit:

Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.

Native_Data_Set_Environment:

Waypoint GPS v.8.3; Trimble Business Center v.3.00; Geographic Calculator 2013; PosPac MMS 6.2; RiProcess v 1.5.8; Microstation V8i; TerraScan v.13.008; TerraMatch v.13.002; TerraModeler v.13.002; ArcMap v.10.1; Windows 7 Operating System

Cross_Reference:

Citation_Information:

Originator: Joseph F. Terrano, James G. Flocks, and Kathryn E.L. Smith
Publication_Date: 20151203
Title:

A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for Breton Island, Louisiana: 1869-2014

Geospatial_Data_Presentation_Form:Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi-F7XS5SGM

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: http://coastal.er.usgs.gov/data-release/doi-F7XS5SGM/

Cross_Reference:

Citation_Information:

Originator: Joseph F. Terrano, Kathryn E.L. Smith, and James G. Flocks
Publication_Date: Unpublished material
Title:

Analysis of Shoreline and Geomorphic Change for Breton Island, Louisiana from 1869 to 2014

Geospatial_Data_Presentation_Form:Series_Information:

Series_Name: U.S. Geological Survey Open File Report
Issue_Identification: Unpublished

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: To be determined

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Logical_Consistency_Report:

All data is seamless from one tile to the next, with no avoidable gaps or "no data" areas

Completeness_Report:

Datasets contain complete coverage of tiles. A visual qualitative assessment was performed to ensure data completeness. The raw point cloud is of good quality and data passes fundamental vertical accuracy specifications.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Horizontal accuracy details were not included in the report provided by Photo Science, Inc.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The fundamental and vertical accuracy was tested with 10 bare earth ground control points provided by the USGS. The survey checkpoints were distributed throughout the project area as feasible. The Root Mean Square Error (RMSE) of the vertical accuracy of this dataset is 0.03 meters. Additionally, a few ground control points were provided by the USGS in various land cover types. The land classes and number of control points are as follows: Mangroves (1), Short Grass (1), Tall Grass (1), Submerged (4), and Surf Zone (3). Despite the small sample sizes, supplemental vertical accuracy of each land cover type was calculated. All points (bare earth and land cover) were used to calculate the classified vertical accuracy. 0.060 meters Accuracy(z) at 95 percent confidence interval. Fundamental Vertical Accuracy (FVA) was assessed using 10 ground survey points provided by the USGS. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the lidar surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.06 m. FVA Accuracy(z) has been tested to meet 24.5 cm at 95 Percent confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines.

Lineage:

Process_Step:

Process_Description:

Lidar Pre-Processing: 1. Flight lines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. 2. Resolved kinematic corrections for aircraft position data using kinematic aircraft GPS and static ground GPS data. 3. Developed a smoothed best estimate of trajectory (SBET) file that blended post-processed aircraft position with attitude data. Sensor head position and attitude were calculated throughout the survey. The SBET data were used extensively for laser point processing. 4. Calculated laser point position by associating SBET position to each laser point return time, scan angle, intensity, etc. Data were converted to orthometric elevations (NAVD88) by applying a Geoid12a correction. 5. Filtered out erroneous points. 6. Performed automated line-to-line calibrations for system attitude parameters (pitch, roll, heading), mirror flex (scale) and GPS/IMU drift. Calibrations were calculated on matching surfaces within and between each line and results were applied to all points in a flight line. Every flight line was used for relative accuracy calibration. 7. Identified and refracted all returns requiring a refraction correction. 8. Assessed statistical absolute accuracy via direct comparisons of surface points to ground survey data. Data were exported to standard LAS 1.2 format.

Process_Date: 2014
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Quantum Spatial/USGS

Contact_Position: Geospatial Services
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th St. South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8000
Contact_Facsimile_Telephone: 727 502-8182

Process_Step:

Process_Description:

Lidar Post-Processing: The calibrated and controlled Lidar swaths were processed using proprietary automated point classification routines. These routines operate against the entire collection (all swaths, all lifts), eliminating character differences between files. Data were then distributed as virtual tiles to experienced Lidar analysts for localized automatic classification, manual editing, and peer-based quality control checks. Supervisory QC monitoring of work in progress and completed editing ensured consistency of classification character and adherence to project requirements across the entire project area.

Process_Date: 2014
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Quantum Spatial/USGS

Contact_Position: Geospatial Services
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th St. South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8000

Process_Step:

Process_Description:

In ArcGIS the DEM and a LAS tile index were added and compared to see which LAS files covered Breton Island and Gosier Islands. The LAS files covering Breton Island were put in 1 filder while the Gosier Islands LAS files were put in another. These classified LAS files were added to Global Mapper v.17 for each area. A DEM was created by selecting the "Elevation grid for use in analysis" button and selecting the "triangulation (Grid TIN Points) option" with a BIN size of 10. From the "Select Lidar point classifications to import" the options selected were; "2-Water" and "26-Reserved for ASPRS Definition". From Lidar return type was last. After the DEM was created it was exported as a LAZ file, one for each of the 2 areas.

Process_Date: 20160325
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S.Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th St. South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8000

Process_Step:

Process_Description:

Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.

Process_Date: 20170124
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Alan O. Allwardt

Contact_Position: Contractor -- Information Specialist
Contact_Address:

Address_Type: mailing and physical address
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7551
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: aallwardt@usgs.gov

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20201013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Tile index
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 16
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -87.000000
Latitude_of_Projection_Origin: 0
False_Easting: 500000.000000
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.01
Ordinate_Resolution: 0.01

Planar_Distance_Units: meters

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: 298.25722210100002

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988 (GEOID12A)
Altitude_Resolution: 0.01
Altitude_Distance_Units: meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL

Contact_Person: Joseph F. Terrano

Contact_Position: Researcher 1
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8047
Contact_Electronic_Mail_Address: jterrano@usgs.gov

Resource_Description: Breton_Island_2014.LAZ, Gosier_Islands_2014.LAZ
Distribution_Liability:

Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: LAZ
Format_Version_Number: 1.2
Format_Specification:

The lidar LAS files were compressed to a LAZ format and saved using the repective island name.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-F70G3H6G/data/Breton_Island.laz

Fees: None, if obtained online; otherwise, prices vary.

Metadata_Reference_Information:

Metadata_Date: 20231103
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Joseph F. Terrano
Contact_Organization:

Cherokee Nation Technology contracted to U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL

Contact_Position: Researcher 1
Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: 727 502-8047
Contact_Electronic_Mail_Address: jterrano@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints:

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of the data in future products or derivative research.

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/Breton_Gosier_Islands_2014_LAZ_Metadata.html>