Identification_Information: Citation: Citation_Information: Originator: Chelsea A. Stalk Originator: Jake J. Fredericks Originator: Stanley D. Locker Originator: Cody S. Carlson Publication_Date: 20180522 Title: Multibeam Bathymetry Data Collected in 2016 from Grand Bay Alabama/Mississippi: Trackline navigation Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7MC8Z9N Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7MC8Z9N Description: Abstract: A reconnaissance multibeam bathymetry survey was conducted by the U.S Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) in Grand Bay Alabama/Mississippi on May 12, 2016 as an assessment of the shallow water capabilities of the Teledyne Reson SeaBat T50-P multibeam echosounder, and as an attempt to map the eroding marsh edges at locations of interest around the bay. This dataset, Grand_Bay_2016_MBB_Tracklines.zip, includes the trackline vector file derived from the acquisition software at the time of survey. Purpose: The purpose of the survey was to assess the capabilities of the Reson T50 multibeam system, and attempt to image eroding marsh edges at areas of interest within Grand Bay Alabama/Mississippi (AL/MS). In order to obtain coverage of the shallow water marsh edges, a single head of the system was utilized and tilted at an angle of 30 degrees to the port side of the vessel. Data were collected during USGS field activity number (FAN) 2016-331-FA aboard the R/V Jabba Jaw, a 22 foot (ft) shallow draft center console catamaran. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-331-FA. Supplemental_Information: Trackline files were recorded at the time of the survey using HYPACK, a marine surveying, positioning, and navigation software for data acquired by U.S Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160512 Ending_Date: 20160512 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -88.411460 East_Bounding_Coordinate: -88.395986 North_Bounding_Coordinate: 30.383845 South_Bounding_Coordinate: 30.364199 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: elevation Theme_Keyword: location Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: bathymetry Theme_Keyword: multibeam sonar Theme_Keyword: ocean characteristics Theme_Keyword: ocean processes Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: hydrography Theme_Keyword: geophysical Theme_Keyword: seafloor mapping Theme_Keyword: Teledyne Reson SeaBat T50-P Theme_Keyword: POS MV Wavemaster II Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Sea level and Storm Impacts on Estuarine Environments and Shorelines Theme_Keyword: SSIEES Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: SPCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Alabama Place_Keyword: Mississippi Place_Keyword: Grand Bay Place_Keyword: Grand Bay National Wildlife Refuge Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: May 2016 Access_Constraints: None Use_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 these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: Cherokee Nation Technologies / U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center 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)502-8114 Contact_Electronic_Mail_Address: cstalk@usgs.gov Data_Set_Credit: U.S. Geological Survey, Sea-level and Storm Impacts on Estuarine Environments and Shorelines (SSIEES) program, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Microsoft Windows 7 Version 6.2 (Build 9200) Service Pack 1; Esri ArcGIS 10.3.1.4959 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of the data was determined during data collection. This dataset was from one research cruise and was therefore internally consistent. Methods were employed to maintain data collection consistency aboard the platform. During mobilization, each piece of equipment was isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements were taken manually, and digitally entered into their respective programs. The data have not been independently verified for accuracy. Logical_Consistency_Report: This file represents the trackline navigation file collected during a multibeam bathymetry survey. Completeness_Report: These are the trackline files as recorded at the time of acquisition by HYPACK, marine surveying, positioning, and navigation software during a multibeam survey in Grand Bay Alabama/Mississippi, May 2016. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The trackline position data were recorded using HYPACK hydrographic acquisition and processing software at the time of the survey. The system was navigated using Differential GPS (DGPS), trackline acuracy is not derived from post processed data and therefore horizontal accuracy is assumed to be 2 meters. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The survey tracklines do not include or represent vertical data. Lineage: Process_Step: Process_Description: Navigation lines were exported from HYPACK hydrographic acquisition and processing software as a .kml file, imported into ArcGIS using the "kml to layer" tool, and exported as a shapefile. Process_Date: 20170425 Source_Produced_Citation_Abbreviation: Grand_Bay_2016_MBB_Tracklines.shp Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Chelsea A. Stalk Contact_Position: Researcher I 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)502-8114 Contact_Electronic_Mail_Address: cstalk@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: string Point_and_Vector_Object_Count: 34 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197872573 Longitude_Resolution: 0.0228099669 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 Ellipsoid_Name: World Geodetic System of 1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: World Geodetic System of 1984 Altitude_Resolution: 0.001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Grand_Bay_2016_MBB_Tracklines.shp Entity_Type_Definition: Esri shapefile containing the survey tracklines for the multibeam data collected by the U.S. Geological Survey in May 2016 in Grand Bay Alabama/Mississippi. 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: Polyline ZM is the geometry type defining the features. Attribute: Attribute_Label: Year Attribute_Definition: Year data were collected Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: 2016 Attribute: Attribute_Label: Data_Type Attribute_Definition: MBB = Multibeam Bathymetry; USGS SPCMSC identifier of bathymetry data type. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character String - MBB Attribute: Attribute_Label: HypackLine Attribute_Definition: Line name assigned by HYPACK during acquisition. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: Line number followed by segment number and Coordinated Universal Time (UTC) time, which are all recorded at the start of a line. The naming convention used for each line was xxx_yyy_hhmm. Example of line name: 133_000_1718.RAW, where 133 is the designated line number, 000 is the segment number, which would count up by one if the line was either re-run or if there were acquisition issues, 1718 is the UTC time in hours and minutes, and RAW is the file extension. Attribute: Attribute_Label: Length_m Attribute_Definition: LLength, in meters, of survey trackline. This metric is calculated by ArcMap during the creation of the polyline shapefile. Attribute_Definition_Source: Esri Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15 Range_Domain_Maximum: 599 Attribute_Measurement_Resolution: 1.0 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: Cherokee Nation Technologies / U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center 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) 502-8114 Contact_Electronic_Mail_Address: cstalk@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey (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 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: Esri shapefile Format_Version_Date: 2018 Format_Specification: SHP File_Decompression_Technique: ZIP Transfer_Size: 4.41 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7MC8Z9N/data/Grand_Bay_2016_MBB_Tracklines.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20180521 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: Cherokee Nation Technologies / U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center 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: cstalk@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Security_Information: Metadata_Security_Classification_System: none Metadata_Security_Classification: unclassified Metadata_Security_Handling_Description: None