Metadata: Identification_Information: Citation: Citation_Information: Originator: Julie C. Bernier Originator: Kyle W. Kelso Originator: Nancy T. DeWitt Publication_Date: 20190913 Title: Single-Beam Bathymetric Data Collected in 2008 from the Mississippi River Delta Plain, Louisiana Geospatial_Data_Presentation_Form: Tabular digital data, vector digital data Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9RIB5GC Description: Abstract: Data release doi:10.5066/P9RIB5GC associated with this metadata record serves as an archive of single-beam bathymetric (SBB) data collected in July 2004 (Madison Bay) and August 2008 (Bully Camp, Point au Chien, Caminada, Fourchon, and Leeville) at six study areas in the Mississippi River Delta Plain (MRDP), Louisiana. Data were collected from historically formed open-water bodies as part of the U.S. Geological Survey’s (USGS) Gulf Coast Subsidence project to provide more extensive spatial coverage than water depths collected only along coring transects in 2002, 2003, 2006, and 2007 (USGS Open-File Reports [OFR] 2005-1216 and 2009-1158). The bathymetric data were used to estimate magnitudes of one-dimensional (vertical) and three-dimensional (volume) accommodation that formed as a result of extensive historical wetland loss in Barataria and Terrebonne Basins in the MRDP. All bathymetric data are provided as x,y,z point data in the projected coordinate system North American Datum of 1983 (NAD83), Universal Transverse Mercator (UTM) Zone 15 North (15N) and all elevations are North American Vertical Datum of 1988 (NAVD88) orthometric heights, derived using the GEOID03 geoid model. Purpose: Dissemination of processed SBB bathymetric data collected from the Bully Camp, Point au Chien, Caminada, Fourchon, and Leeville study areas, Louisiana in August 2008 (USGS Field Activity Number [FAN] 08SWL02). The bathymetric data were used to estimate magnitudes of one-dimensional (vertical) and three-dimensional (volume) accommodation that formed as a result of extensive historical wetland loss in Barataria and Terrebonne Basins in the MRDP. Supplemental_Information: A limited number of water depths were collected along coring transects at nine study areas in 2002, 2003, 2006, and 2007 (USGS OFRs 2005-1216 and 2009-1158). In 2004 and 2008, SBB data were collected at the Madison Bay, Bully Camp, Point au Chien, Caminada, Fourchon, and Leeville study areas. SBB data were not collected at the Bay St. Elaine, Bayou Perot, DeLarge, or Ironton study areas. These data are scientific in nature and are not to be used for navigation. Bathymetric grids interpolated from these point elevations should be used with caution and should use an appropriate grid cell size based on trackline spacing. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080806 Ending_Date: 20080823 Currentness_Reference: Ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -90.50417 East_Bounding_Coordinate: -90.12687 North_Bounding_Coordinate: 29.47166 South_Bounding_Coordinate: 29.16034 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:b59e4544-c548-4297-a954-c24a5318e08b Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: geoscientificInformation Theme_Keyword: inlandWaters Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geomorphology Theme_Keyword: bathymetry Theme_Keyword: GPS measurement Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: single-beam Theme_Keyword: elevation Theme_Keyword: differential Global Positioning System Theme_Keyword: DGPS Theme_Keyword: wetland loss Theme_Keyword: accommodation Theme_Keyword: delta plain Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Louisiana Place: Place_Keyword_Thesaurus: None Place_Keyword: Mississippi River Delta Plain Place_Keyword: Barataria Basin Place_Keyword: Terrebonne Basin Access_Constraints: None Use_Constraints: The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Julie C. Bernier Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: jbernier@usgs.gov Data_Set_Credit: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Cross_Reference: Citation_Information: Originator: Morton, R.A. Originator: Bernier, J.C. Originator: Barras, J.A. Originator: Ferina, N.F. Publication_Date: 2005 Title: Rapid subsidence and historical wetland loss in the Mississippi Delta Plain: likely causes and future implications Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2005-1216 Online_Linkage: https://pubs.usgs.gov/of/2005/1216/ Cross_Reference: Citation_Information: Originator: Morton, R.A. Originator: Bernier, J.C. Originator: Kelos, K.W. Publication_Date: 2009 Title: Recent subsidence and erosion at diverse wetland sites in the southeastern Mississippi delta plain Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2009-1158 Online_Linkage: https://pubs.usgs.gov/of/2009/1158 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of the processed data is determined during data collection. Offsets between the single-beam transducer and the Geographic Positioning System (GPS) antenna reference point (ARP) were measured during the survey and accounted for in post-processing. Bar checks were performed as calibration efforts to account for any drift in the Marimatech Echosounder. Differential Global Positioning System (DGPS) coordinates were obtained using post-processing software packages (National Geodetic Survey On-Line Positioning User Service [OPUS] and Waypoint Product Group GrafNav, version 7.60). Logical_Consistency_Report: Bathymetric soundings were recorded using a Marimatech E-Sea MP35 echosounder system. Position and elevation data were recorded using an Ashtech Z-Xtreme GPS receiver and choke-ring antenna. GPS data were recorded concurrently throughout the survey at nearby base stations using a similar instrument combination. The final point (xyz) data are the result of merging the post-processed DGPS position data with the sounding data using the software package System for Accurate Nearshore Depth Surveying (SANDS), version 3.1. Completeness_Report: Data release doi:10.5066/P9RIB5GC associated with this metadata record includes the processed SBB position and elevation data for 241,962 point locations collected from Barataria and Terrebonne Basins in the MRDP, Louisiana in August 2008 (USGS FAN 08SWL02). Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All static base station sessions were processed through the On-Line Positioning User Service (OPUS) maintained by the National Geodetic Survey (NGS). The OPUS base-station solutions were entered into a spreadsheet to compute a final, time-weighted positional coordinate (latitude, longitude, and ellipsoid height). Base-station positional error was calculated as the absolute value of the final weighted solution minus the session position value. The maximum horizontal error of the base station coordinates used for post-processing was 0.00279 seconds latitude and 0.00061 seconds longitude. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: All static base station sessions were processed through OPUS. The OPUS base-station solutions were entered into a spreadsheet to compute a final, time-weighted positional coordinate (latitude, longitude, and ellipsoid height). Base-station positional error for each GPS session was calculated as the absolute value of the final weighted solution minus the session position value. For this survey, the standard deviation of the base station ellipsoid height was 0.006 meters (m) and the maximum vertical error for the base station was +/- 0.021 m. Lineage: Process_Step: Process_Description: GPS Acquisition - Position and elevation data were recorded using an Ashtech Z-Xtreme GPS receiver, which recorded the 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via a choke-ring antenna. GPS data were recorded concurrently throughout the survey at a nearby base station (maximum baseline distance about 11.5 km) using a similar instrument combination. The base receiver and the rover receiver recorded their positions concurrently at 1-second (s) recording intervals throughout the survey. Process_Date: 2008 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kyle W. Kelso Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: kkelso@usgs.gov Process_Step: Process_Description: SBB Acquisition - The single-beam bathymetric data were collected aboard the 17-foot Research Vessel (R/V) OOID. HYPACK version 6.2, a marine surveying, positioning, and navigation software package, managed the planned-transect information and provided real-time navigation, steering, correction, data quality, and instrumentation-status information to the boat operator. Planned tracklines were spaced approximately 100 m apart at the Bully Camp, Caminada, and Fourchon study areas and approximately 200 m apart at the Leevile and Point au Chien study areas. Depth soundings were recorded at 50-ms intervals using a Marimatech MP35 echosounder system. Data from the GPS receiver and fathometer were recorded in real time and merged into a single raw data file (.RAW) in HYPACK, with each device string referenced by a device identification code and time stamped to UTC. Process_Date: 2004 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kyle W. Kelso Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: kkelso@usgs.gov Process_Step: Process_Description: GPS Processing - The coordinate values of the GPS base stations are the time-weighted average of values obtained from OPUS. The base station coordinates were imported into GrafNav, version 7.60 (Waypoint Product Group) and the data from the rover GPS were post-processed to the concurrent base-station session data; baseline distances were less than 11.5 km. The DGPS data were processed in the North American Datum of 1983 (NAD83) geodetic datum. Process_Date: 2009 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kyle W. Kelso Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: kkelso@usgs.gov Process_Step: Process_Description: SBB Processing - The raw bathymetric data and processed DGPS positions were merged using the System for Accurate Nearshore Depth Surveying (SANDS), version 3.1. SANDS is a single-beam acoustic (sounding), GPS-based hydrographic processing software package developed by the USGS for shallow-water bathymetric mapping. Processed ellipsoid elevations were transformed to North American Vertical Datum of 1988 (NAVD88) orthometric elevations using the NGS geoid model of 2003 (GEOID03). The merged, geometrically corrected SBB data were exported as x,y,z point data in the NAD83 (x,y) and NAVD88 GEOID03 (z) datums. Process_Date: 2009 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kyle W. Kelso Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: kkelso@usgs.gov Process_Step: Process_Description: Quality Control and Quality Assurance (QA/QC) - The processed SBB point data were imported into Esri ArcGIS version 9.2, visually inspected for outliers, and elevation differences at the intersection of crossing tracklines were calculated. Data along tracklines with crossing elevation differences greater than 10 centimeters (cm) were reviewed for processing errors and adjusted or removed from the final dataset. Process_Date: 2009 Source_Produced_Citation_Abbreviation: 08SWL02_BullyCamp_NAD83_NAVD88_G03 Source_Produced_Citation_Abbreviation: 08SWL02_Caminada_NAD83_NAVD88_G03 Source_Produced_Citation_Abbreviation: 08SWL02_Fourchon_NAD83_NAVD88_G03 Source_Produced_Citation_Abbreviation: 08SWL02_Leeville_NAD83_NAVD88_G03 Source_Produced_Citation_Abbreviation: 08SWL02_PointAuChien_NAD83_NAVD88_G03 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kyle W. Kelso Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: kkelso@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: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 241962 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: 0.9996 Longitude_of_Central_Meridian: -93.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.001 Ordinate_Resolution: 0.001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: D North American 1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.001 Altitude_Distance_Units: Meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 08SWL02_BullyCamp_NAD83_NAVD88_G03 Entity_Type_Definition: Comma-separated values (.csv) text, Esri shape (.shp), and Keyhole Markup Language (.kml) files containing the processed SBB x,y,z point data for the Bully Camp study area. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 08SWL02_Caminada_NAD83_NAVD88_G03 Entity_Type_Definition: Comma-separated values (.csv) text, Esri shape (.shp), and Keyhole Markup Language (.kml) files containing the processed SBB x,y,z point data for the Caminada study area. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 08SWL02_Fourchon_NAD83_NAVD88_G03 Entity_Type_Definition: Comma-separated values (.csv) text, Esri shape (.shp), and Keyhole Markup Language (.kml) files containing the processed SBB x,y,z point data for the Fourchon study area. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 08SWL02_Leeville_NAD83_NAVD88_G03 Entity_Type_Definition: Comma-separated values (.csv) text, Esri shape (.shp), and Keyhole Markup Language (.kml) files containing the processed SBB x,y,z point data for the Leeville study area. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 08SWL02_PointAuChien_NAD83_NAVD88_G03 Entity_Type_Definition: Comma-separated values (.csv) text, Esri shape (.shp), and Keyhole Markup Language (.kml) files containing the processed SBB x,y,z point data for the Point au Chien study area. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Geometry type defining the features Attribute: Attribute_Label: NAD83_X Attribute_Definition: X-coordinate (easting) of sample point, in meters (NAD83, UTM zone 15N) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 742174.137 Range_Domain_Maximum: 779396.346 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: NAD83_Y Attribute_Definition: Y-coordinate (northing) of sample point, in meters (NAD83, UTM zone 15N) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3228997.244 Range_Domain_Maximum: 3263057.481 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: NAVD88G03 Attribute_Definition: Elevation (orthometric height) of sample point, in meters (NAVD88, GEOID03) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -6.017 Range_Domain_Maximum: 0.074 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: RMS Attribute_Definition: Root mean square (RMS) error of sample point, in meters Attribute_Definition_Source: SANDS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.045 Range_Domain_Maximum: 0.141 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: DataType Attribute_Definition: Bathymetric data collection type Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SBB Enumerated_Domain_Value_Definition: single-beam bathymetry Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: HypackLine Attribute_Definition: Trackline number assigned by HYPACK during acquisition Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: Character string Attribute: Attribute_Label: Year Attribute_Definition: Year data were acquired, in YYYY format Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2008 Range_Domain_Maximum: 2008 Attribute: Attribute_Label: DOY Attribute_Definition: Day-of-year (DOY) the data were acquired Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 219 Range_Domain_Maximum: 236 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Julie C. Bernier Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: jbernier@usgs.gov Resource_Description: Downloadable data Distribution_Liability: This publication was prepared by an agency of the United States Government. 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 display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Compressed (zip) archive Format_Version_Date: 2019 Format_Specification: Multimedia presentation Format_Information_Content: This zip archive includes comma-separated values text files (.csv), GIS data files in Esri shapefile (.shp) and Keyhole Markup Language (KML) formats, and accompanying metadata for SBB data collected in 2008 from Barataria and Terrebonne basins in the MRDP, Louisiana (USGS FAN 08SWL02). File_Decompression_Technique: Unzip Transfer_Size: 18 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9RIB5GC/data/08SWL02_SBB_xyz.zip Fees: None, if obtained online Technical_Prerequisites: GIS files can be opened using the free ArcGIS Explorer or Google Earth GIS viewers. Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Julie C. Bernier Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: jbernier@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None