CS-21 2002 Photomosiac

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey, National Wetlands Research Center

Publication_Date: 200501

Title: CS-21 2002 Photomosiac

Geospatial_Data_Presentation_Form: remote-sensing image

Publication_Information:

Publication_Place: Lafayette, Louisiana, USA

Publisher: U.S. Geological Survey, National Wetlands Research Center

Larger_Work_Citation:

Citation_Information:

Originator: Louisiana Department of Natural Resources

Originator: U.S. Department of Commerce

Originator: U.S. Department of Agriculture

Originator: U.S. Department of Interior

Originator: U.S. Department of the Army

Originator: U.S. Environmental Protection Agency

Originator: National Oceanic Atmospheric Administration

Publication_Date: 19901129

Title:

Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) Authorizing Bill

Edition: Version 1

Geospatial_Data_Presentation_Form: document

Online_Linkage: <http://www.lacoast.org>

Description:

Abstract:

The Louisiana State Legislature created Coastal Wetlands Planning, Protection, and Restoration Act (CWPPRA) in order to conserve, restore, create and enhance Louisiana's coastal wetlands. The restoration plans developed persuant to these acts specifically require an evaluation of the effectiveness of each coastal wetlands restoration project in achieving long-term solutions to arresting coastal wetlands loss. This data set include mosaicked aerial photographs for the Highway 384 Hydrologic Restoration for 2002. This data is used as a basemap for habitat and land/water analysis. It also serves as a visual tool for project managers to help them identify any obvious problems or land loss within their project boundary.

Purpose:

The intended use of this data set is to provide information to aid efforts in the conservation, restoration, creation and enhancement of Louisiana's coastal wetlands in order to aid in long-term solutions to these and other problems.

Supplemental_Information:

A project boundary may be included on some hard copy maps. This boundary was created by the Louisiana Department of Natural Resources and therefore the information on the process will not be noted in this metadata set.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2002

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: 470986.286563

East_Bounding_Coordinate: 478952.709272

North_Bounding_Coordinate: 3324754.827905

South_Bounding_Coordinate: 3318298.907056

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: CWPPRA

Theme_Keyword: Breaux Bill

Theme_Keyword: wetlands

Theme_Keyword: mosaic

Theme_Keyword: aerial photography

Theme_Keyword: coastal restoration

Theme_Keyword: coastal conservation

Theme_Keyword: coastal enhancement

Theme_Keyword: monitoring

Theme_Keyword: GIS

Theme_Keyword: rectification

Theme_Keyword: image

Theme_Keyword: satelite imagery

Theme_Keyword: DOQQ

Theme_Keyword: scan

Theme_Keyword: DEM

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Coastal Louisiana

Place_Keyword: Louisiana

Place_Keyword: Gulf of Mexico

Place_Keyword: South Louisiana

Access_Constraints:

It is strongly recommended that this data is directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes.

Use_Constraints:

Acknowledgement of the U.S. Geological Survey, National Wetlands Research 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 for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by NWRC staff. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. These data are not legal documents and are not to be used as such.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, National Wetlands Research Center

Contact_Person: William Jones

Contact_Position: Geographer/ GIS Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 700 Cajundome Blvd

City: Lafayette

State_or_Province: Louisiana

Postal_Code: 70506

Country: USA

Contact_Voice_Telephone: 337-266-8500

Contact_Facsimile_Telephone: 337-288-8513

Contact_Electronic_Mail_Address: william_jones@usgs.gov

Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

Data_Set_Credit:

The NWRC would like to acknowledge the assistance of the Louisiana Department of Natural Resources, U.S. Department of Commerce, U.S. Department of Agriculture, U.S. Department of the Interior, U.S. Department Army, and the U.S. Environmental Protection Agency.

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

is not applicable; data are raster and have no assigned attributes.

Logical_Consistency_Report:

Working with aerial photography with an overlap of 20%-25% coverage, cut lines are created on the scanned images to ensure overlap. The image processing software allows the mosaic to be overlaid onto a georeferenced image of the same area, to see how closely the mosaic resembles it.

Completeness_Report: These data are complete

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Given the accuracy of the resection fits to the provided DOQQ control, as well as the consistency (frame to frame) in the orthorectified images, the RMSE value is 5.0 meters (this is a conservative estimate).

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Accuracy is dependent on the accuracy of the DEMs.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: unknown

Publication_Date: 20021215

Title: 2002 CIR aerial photography

Geospatial_Data_Presentation_Form: remote-sensing image

Publication_Information:

Publication_Place: Louisiana

Publisher: unknown

Source_Scale_Denominator: 12000

Type_of_Source_Media: stable-base material

Source_Time_Period_of_Content:

Source_Currentness_Reference: publication date

Source_Contribution: The primary data source for the mosaic

Process_Step:

Process_Description:

The mosaicking process is conducted by a contractor, Science Applications International Corporation using an in-house software. From the original documentation - the mensuration process is performed in two separate processes. The first process is to transfer control points from the DOQQs to the new imagery. The X and Y coordinates are determined from the DOQQ and the Z coordinate is determined from the DEM. A sufficient number of points are transferred (usually 10-20) for perimeter images and some interior images. The second process is to transfer common points between adjacent photographs, both in-line and cross-strip. Typically 9 points willl be transferred between photos. Initial estimates of the ground coordinates of these points will be determined and estimates of the elevation of these points will be determined by the DEMs. Once the control and pass points have been measured, an aerotriangulation is performed using the measurement data and initial estimates of ground point coordinates, aircraft position and orientation. The results of the aerotriangulation are examined, outliers eliminated, additional points added (if necessary) and the AT repeated until a satisfactory result is achieved. The images are then orthorectified and mosaicked using a SAIC developed software suite.

Process_Date: 2004

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Coastal Louisiana

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel

Row_Count: 12587

Column_Count: 15532

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 15

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -93.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.512904

Ordinate_Resolution: 0.512904

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: 298.257222

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The images are mosiacked photos that contain no real attributes. Each pixel is represented by a color, which has no attribute designation.

Entity_and_Attribute_Detail_Citation: None

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, National Wetlands Research Center

Contact_Person: William Jones

Contact_Position: Geographer/ GIS Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 700 Cajundome Blvd

City: Lafayette

State_or_Province: Louisiana

Postal_Code: 70506

Country: USA

Contact_Voice_Telephone: 337-266-8500

Contact_Facsimile_Telephone: 337-288-8513

Contact_Electronic_Mail_Address: william_jones@usgs.gov

Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday

Resource_Description: CWPPRA Mosaic Data

Distribution_Liability:

Although these data have been processed successfully on a computer system at the U. S. Geological Survey, National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy 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. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. NWRC shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the NWRC Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and NWRC interests.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TIFF

Transfer_Size: 31.326

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://sabdata.nwrc.gov>

Fees: None, if data are available online

Metadata_Reference_Information:

Metadata_Date: 20050421

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, National Wetlands Research Center

Contact_Position: Metadata Specialist

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 700 Cajundome Blvd

City: Lafayette

State_or_Province: Louisiana

Postal_Code: 70506

Country: USA

Contact_Voice_Telephone: 337-266-8500

Contact_Facsimile_Telephone: 337-266-8513

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: None

Metadata_Use_Constraints:

Acknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions of the record to create a similar record of slightly altered data, such as reprojection.