Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, Biological Resources Division National Wetlands Research Center Publication_Date: 2001 Title: Brown Marsh Rectified Aerial Photography Geospatial_Data_Presentation_Form: Raster Digital Data Description: Abstract: This data set consists of 12 photo mosaics for the following USGS quadrangles - Lake Quitman, Lake Tambour, Lake Felicity, Bay Courant, Oyster Bayou, East Bay Junop, Grand Bayou de Large, Dog Lake, Cocodrie, Pelican Pass, Leeville, and Central Isles Dernieres. The mosaics cover the extent of the most prominent "brown marsh" dieoff of coastal Louisiana. The most prominent areas being affected are the salt marshes between the Mississippi and Atchafalaya Rivers. Purpose: To identify and monitor the brown marsh dieoffs in coastal Louisiana. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000927 Ending_Date: 20001115 Currentness_Reference: Observed Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.250 East_Bounding_Coordinate: -90.125 North_Bounding_Coordinate: 29.375 South_Bounding_Coordinate: 29.000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Brown marsh Theme_Keyword: Aerial photography Theme_Keyword: Scanned Theme_Keyword: Rectification Theme_Keyword: wetland Theme_Keyword: DOQQ Place: Place_Keyword_Thesaurus: U.S. Geological Survey, Geographic Names Information System Place_Keyword: Louisiana Place_Keyword: Coastal Louisiana Place_Keyword: Gulf of Mexico Place_Keyword: Lake Quitman Place_Keyword: Lake Tambour Place_Keyword: Lake Felicity Place_Keyword: Bay Courant Place_Keyword: Oyster Bayou Place_Keyword: East Bay Junop Place_Keyword: Grand Bayou du Large Place_Keyword: Dog Lake Place_Keyword: Cocodrie Place_Keyword: Pelican Pass Place_Keyword: Leeville Place_Keyword: Central Isle Dernieres Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2000 Access_Constraints: 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. See section 6.3 Distribution Liability. Use_Constraints: Acknowledgment of the 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 of that comparisons with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. 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, Biological Resource Division's, National Wetlands Research Center Contact_Person: William Jones Contact_Position: Geographer Contact_Address: Address_Type: Mailing and Physical Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: Louisiana Postal_Code: 70506 Contact_Voice_Telephone: 337-266-8581 Contact_Facsimile_Telephone: 337-266-8616 Contact_Electronic_Mail_Address: william_jones@usgs.gov Native_Data_Set_Environment: ERDAS Imagine 8.3 on a NT operating platform. Cross_Reference: Citation_Information: Originator: U.S. Geological Survey, National Wetlands Research Center Publication_Date: 20001100 Title: Brown Marsh Scanned Aerial Photography Geospatial_Data_Presentation_Form: Digital raster data Publication_Information: Publication_Place: Lafayette, LA Publisher: U.S. Geological Survey, National Wetlands Research Center Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The data set is raster in nature and does not contain a defined set of attributes. Logical_Consistency_Report: Frames with at least 20% were chosen for the quadrangle mosaics. All frames were rectified using DOQQs. Completeness_Report: There are no omissions to the data sets. Frames were selected to cover the complete quadrangle. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Not applicable Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Not applicable Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, National Wetlands Research Center Publication_Date: 200011 Title: Scanned CIR Aerial Photography Geospatial_Data_Presentation_Form: Digital Raster Data Publication_Information: Publication_Place: Lafayette, Louisiana Publisher: U.S. Geological Survey, National Wetland Research Center Type_of_Source_Media: Database file Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000927 Ending_Date: 20001115 Source_Currentness_Reference: Photo date Source_Citation_Abbreviation: CIR Source_Contribution: Primary source for recitifed mosaics Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, National Mapping Division Publication_Date: 1999 Title: USGS Digital Orthophoto Quadrangles Geospatial_Data_Presentation_Form: Digital Raster Data Publication_Information: Publication_Place: Rolla, MO Publisher: U.S. Geological Survey, National Mapping Division Type_of_Source_Media: Database file Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: DOQQ Source_Contribution: Primary source for recitifying the mosaics Process_Step: Process_Description: The scanned frames were mosaicked and rectified using ERDAS Imagine 8.3. The mosaicked frames were then subset to the boundaries of the corresponding quadrangles. The images then converted to tiff and jpeg files both with world files. Process_Date: 2001 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Coastal Louisiana Direct_Spatial_Reference_Method: Raster 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: Longitude_of_Central_Meridian: 0.9996 Latitude_of_Projection_Origin: -87.0 False_Easting: 500,000 False_Northing: 0.0 Scale_Factor_at_Central_Meridian: .9996 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Coordinate Pair Coordinate_Representation: Abscissa_Resolution: .61 Ordinate_Resolution: .61 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: Nad83 (North American Datum 1983) Ellipsoid_Name: Goedetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The data set does not have a defined set of attributes or values. The data are raster in nature, and each pixel is represented by a color. Colors have not been assigned a specific value. Entity_and_Attribute_Detail_Citation: No citation Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, National Wetlands Research Center Contact_Person: Scott Wilson Contact_Position: Electrical Engineer Contact_Address: Address_Type: Physical and Mailing Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: LA Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337-266-8644 Contact_Facsimile_Telephone: 337-266-8513 Contact_Electronic_Mail_Address: scott_wilson@usgs.gov Hours_of_Service: 8:00 am to 4:00 pm CST, Monday thru Friday Resource_Description: Rectified aerial photography for brown marsh die off Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data or 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 U.S. Geological Survey 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. The U.S. Geological Survey 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 limitations, the implied warranties of 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 U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF and JPEG Format_Version_Number: Varies File_Decompression_Technique: None Transfer_Size: Sizes for images vary. Jpeg files will be smaller than the tif files. Please see the website for exact file sizes. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://www.lacoast.gov Fees: None, if available on line Custom_Order_Process: None Metadata_Reference_Information: Metadata_Date: 20010514 Metadata_Review_Date: 20010515 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Helena Schaefer Contact_Organization: U.S. Geological Survey National Wetlands Research Center Contact_Position: Geographer Contact_Address: Address_Type: Physical and Mailing Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: LA Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337-266-8696 Contact_Facsimile_Telephone: 337-266-8616 Contact_Electronic_Mail_Address: helena_schaefer@usgs.gov Hours_of_Service: 8:00 am to 4:00 pm CST, Monday thru Friday Metadata_Standard_Name: Draft Content Standard for National Biological Information Infrastructure Metadata, National Biological Service Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None