Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20180405 Title: Single-Beam Bathymetry XYZ Data Collected in 2015 from Grand Bay, Alabama/Mississippi Edition: 2.0 Geospatial_Data_Presentation_Form: Tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7NP22M2 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7NP22M2 Larger_Work_Citation: Citation_Information: Originator: Nancy T. DeWitt Originator: Chelsea A. Stalk Originator: Christopher G. Smith Originator: Stanley D. Locker Originator: Jake J. Fredericks Originator: Terrance A. McCloskey Originator: Cathryn J. Wheaton Publication_Date: 20171201 Title: Single-Beam Bathymetry Data Collected in 2015 from Grand Bay, Alabama/Mississippi Geospatial_Data_Presentation_Form: multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 1070 Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ds1070 Description: Abstract: As part of the Sea level and Storm Impacts on Estuarine Environments and Shorelines project (SSIEES), scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted a single-beam bathymetry survey within the estuarine, open bay and tidal creek environments of Grand Bay Alabama/Mississippi, from May to June 2015. The goal of the SSIEES project is to assess the physical controls of sediment and material exchange between wetlands and estuarine environments along the northern Gulf of Mexico, specifically Grand Bay AL/MS and Vermilion Bay, Louisiana, as well as along the east coast in Chincoteague Bay Virginia/Maryland. The data included in this data release provide baseline bathymetric information for future research investigating wetland/marsh evolution, sediment transport, recent and long term geomorphic change, and can also support modeling of future changes in response to restoration and storm impacts. The survey area encompasses more than 40 square kilometers (km2) of Grand Bay’s incorporated waters. This data release serves as an archive of processed single-beam bathymetry data, collected from May 28 to June 3, 2015 (USGS Field Activity Number [FAN] 2015-315-FA). Geographic information system (GIS) data products include: a 10- and 30-meter cell size interpolated bathymetry grid, trackline maps, and point data files. Additional files include error analysis maps, Field Activity Collection System (FACS) logs, and formal Federal Geographic Data Committee (FGDC) metadata. Purpose: This zip archive, 2015-315-FA_SBB_xyz.zip, contains processed x,y,z data points for all single-beam bathymetry data collected under FAN 2015-315-FA, which encompasses data from two separate survey platforms: the RV Shark (15CCT04), and RV Chum (15CCT05), during the May-June 2015 Grand Bay, Mississippi/Alabama survey. Additional survey details are available at https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-315-FA. Supplemental_Information: For the single-beam bathymetry, the differential positioning was obtained through post processing the base station data to the rover data. This dataset was transformed from the initial datum, which used the International Terrestrial Reference Frame of 2000 (ITRF00) to the North American Datum of 1983 (NAD83) geodetic datum and North American Vertical Datum of 1988 (NAVD88) orthometric height, using the GEOID12A model as well as NAD83 mean lower low water (MLLW) (NOAA NGS VDatum software version 3.6 - http://vdatum.noaa.gov/). The final x,y,z sounding data were gridded at a 10- and 30-meter cell size resolution to create the digital elevation models, which are also included in this data release. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20150528 Ending_Date: 20150603 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -88.41297442 East_Bounding_Coordinate: -88.31118702 North_Bounding_Coordinate: 30.40988996 South_Bounding_Coordinate: 30.34067113 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:34da878d-fe52-4625-a17f-bf443547c9b6 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: geophysics Theme_Keyword: bathymetry Theme_Keyword: single-beam echo sounder Theme_Keyword: field monitoring stations Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: bathymetry Theme_Keyword: trackline Theme_Keyword: single-beam bathymetry Theme_Keyword: single-beam Theme_Keyword: base station Theme_Keyword: benchmark Theme_Keyword: hydrography Theme_Keyword: kinematic Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Sea level and Storm Impacts on Estuarine Environments and Shorelines project Theme_Keyword: SSIEES Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: SPCMSC Theme_Keyword: 15CCT04 Theme_Keyword: 15CCT05 Theme_Keyword: ODOM CV100 Theme_Keyword: 2015-315-FA Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Mississippi Place_Keyword: Gulf of Mexico Place_Keyword: Grand Bay Place_Keyword: Alabama Place_Keyword: Middle Bayou Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: datum Stratum_Keyword: water Stratum_Keyword: shoreline Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: May - June 2015 Access_Constraints: None Use_Constraints: These data are scientific in nature and are not to be used for navigation. The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. These data should not be used for navigational purposes. 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_Position: Researcher I 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)502-8000 Contact_Electronic_Mail_Address: cstalk@usgs.gov Data_Set_Credit: U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center (SPCMSC). Native_Data_Set_Environment: Microsoft Windows 10 Version 1703 (Build 15063.966) Service Pack 1; Esri ArcGIS 10.3.1.4959 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of the data is determined during data collection. This dataset is from one research cruise and is therefore internally consistent. Methods are employed to maintain data collection consistency aboard both platforms (15CCT04, 15CCT05). During mobilization, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements are recorded manually and digitally and entered into their respective programs for calibration. Once calibration is complete and calibration status is considered acceptable, then survey operations commence. The single-beam systems on each survey platform have a dedicated computer, and efforts are made to utilize the same equipment and software versions for each system and platform. However, upgrades and changes occur and require additional setup, measurements, and notation. For the single-beam bathymetry, offsets between the single-beam transducers and the Ashtech antenna reference point (ARP) were measured and accounted for in post-processing. Bar checks were performed as a calibration check and helped to correct any drift in the echosounder. Differential Global Positioning System (DGPS) coordinates were obtained using post-processing software packages (National Geodetic Survey [NGS] On-Line Positioning User Service [OPUS] and Waypoint Product Group GrafNav, version 8.7). Logical_Consistency_Report: These datasets are from one field activity with consistent instrument calibrations. Completeness_Report: This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All static base station sessions were processed through OPUS, which is maintained by the National Oceanic and Atmospheric Administration (NOAA) and the NGS. The base location results from OPUS were entered into a spreadsheet to compute a final, time-weighted positional coordinates (latitude, longitude, and ellipsoid height). Base-station positional error for each GPS session was calculated as the absolute value of the final position minus the session position value. The maximum horizontal error of the base station coordinates used for post-processing the single-beam bathymetry was 0.00025 seconds latitude and 0.00044 seconds longitude for the USGS benchmark, 189A, 0.00040 seconds latitude and 0.00164 seconds longitude for B166. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Both static base station sessions (B166, 189A) were processed through OPUS maintained by NOAA and the NGS. The base location results from OPUS were entered into a spreadsheet to compute a final, time-weighted positional coordinates (latitude, longitude, and ellipsoid height). Base station positional error for each GPS session was calculated as the absolute value of the final position minus the session position value. SPCMSC standards define the maximum acceptable vertical error for any individual base station GPS session as less than or equal to three times the standard deviation of the ellipsoid height; any occupations exceeding this error are removed and the base station coordinates are recalculated. For the B166 base station location, the standard deviation of the ellipsoid height was 0.017 m and the maximum difference from the average ellipsoid for any GPS session was +/- 0.038 m. For the 189A base station location, the standard deviation of the ellipsoid height was 0.014 m and the maximum difference from the average ellipsoid for any GPS session was +/- 0.017 m. All the processed single-beam bathymetry data (x,y,z) for 2015 are referenced to these base station coordinates. The differentially corrected navigation files (base station GPS processed to rover GPS) were exported from GrafNav version 8.7 and then imported into CARIS HIPS and SIPS version 9.0.17 and merged, by time, with the HYPACK (version 13.0.09.17) raw data files at which point the soundings are then geometrically corrected for motion and speed of sound. Lineage: Process_Step: Process_Description: GPS Acquisition: The Geographic Positioning Systems (GPS) base stations were occupied by USGS personnel for the purpose of this survey. Bench mark B166 was located to the north-north west of the survey area near the railroad tracks at the entrance of the Grand Bay National Estuarine Research Reserve (GBNERR), 189A was located northwest of the survey area at the boat launch location used for this survey. The base stations were equipped with Ashtech Proflex GPS Receivers recording 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via Thales choke-ring antennas, recording at 0.1 seconds (s), using WGS84 (G1150), equivalent to ITRF00, and ellipsoid height, in meters. Process_Date: 2015 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey's St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist 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) 502-8000 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Process_Step: Process_Description: Single-beam Bathymetry Acquisition: The single-beam bathymetric data were collected under USGS FAN 2015-315-FA, which encompasses two sub-cruise identifiers specific to platform (15CCT04, 15CCT05). The RV Shark (15CCT04), a 12-foot (ft) Yamaha Personal Water Craft (PWC) collected 298.8 line-km (158 lines), and the RV Chum (15CCT05), an additional 12-ft Yamaha PWC collected 312.6 line-km (123 lines). A motion sensor device was not used for either vessel. Rather, to minimize motion errors, both RV Shark and RV Chum recorded GPS data at 0.1-seconds, utilized a short antenna height by use of a lever arm, and was outfitted with narrow (4-degree) transducer beam. HYPACK (version 13.0.09.17), 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 vessel operator. Depth soundings were recorded at 50-ms intervals using an Odom Echotrac CV100 sounder with a 200-kilohertz (kHz) transducer. Data from the GPS receiver, and fathometer were recorded in real-time aboard both vessels independently 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 Coordinated Universal Time (UTC). Sound velocity profile (SVP) measurements were collected using two SonTek Castaway conductivity, temperature, and depth (CTD) instruments. The instruments were periodically cast overboard to observe changes in water column speed of sound (SOS). A total of 74 sound velocity casts were taken throughout the survey in water depths ranging from 0.135 to 3.95 m. The average sound velocity recorded was 1521.4 meters per second (m/s), and values ranged from 1515.6 to 1527.0 m/s. Process_Date: 2015 Source_Produced_Citation_Abbreviation: HYPACK raw (*.RAW) data files for each trackline surveyed. HYPACK target files for any targets (*.TGT) recorded digitally while surveying, speed of sound files (*.TXT) in text format. Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist 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) 502-8000 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Process_Step: Process_Description: Differentially Corrected Navigation Processing: The coordinate values of the GPS base stations (B166, 189A) are the time-weighted average of values obtained from OPUS. The base station coordinates were imported into GrafNav version 8.7 (Waypoint Product Group) and the kinematic GPS data from the survey vessel were post-processed to the concurrent GPS session data at the base stations. During processing, steps were taken to ensure that the trajectories between the base and the rover were clean, resulting in fixed positions. By analyzing the graphs, trajectory maps, and processing logs that GrafNav produces for each GPS session, GPS data from satellites flagged by the program as having poor health or satellite time segments that had cycle slips could be excluded, or the satellite elevation mask angle could be adjusted to improve the position solutions. The final differentially corrected, precise DGPS positions were computed at the respective time intervals of the roving GPS (0.1-s for 15CCT04, 15CCT05) and exported in ASCII text format to replace the uncorrected rover positions recorded during acquisition. The GPS data were processed and exported in the World Geodetic System of 1984 (WGS84 G1150) geodetic datum. Process_Date: 2015 Source_Produced_Citation_Abbreviation: Post-processed differential navigation data for the rover (PWC) were exported in ASCII text format. Three files (forward, reverse, and combined trajectories) are produced for each GPS session file. Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Nancy T. DeWitt 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: ndewitt@usgs.gov Process_Step: Process_Description: Single-beam Bathymetry Processing: All data were processed using CARIS HIPS and SIPS (Hydrographic Information Processing System and Sonar Information Processing System) version 9.0.17. The raw HYPACK (version 13.0.09.17) data files were imported into CARIS, the differentially corrected navigation files were imported using the generic data parser tool within CARIS, and any SVP profile casts were entered and edited using the SVP editor. The bathymetric data components (position, depth, and SOS) were then merged and geometrically corrected in CARIS to produce processed x,y,z data. Next, the data were edited for outliers and then further reviewed in the Subset Editor utility for crossing status, and questionable data points or areas. The geometrically corrected point data were then exported as an x,y,z ASCII text file referenced to WGS84 (G1150), equivalent to ITRF00, and ellipsoid height, in meters. Source_Used_Citation_Abbreviation: Post-processed differential navigation data, raw HYPACK bathymetric data, and sound velocity data all in ASCII text format. Process_Date: 2015 Source_Produced_Citation_Abbreviation: Grand_Bay_2015_SBB_Level_02_ITRF00.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Nancy T. DeWitt 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: ndewitt@usgs.gov Process_Step: Process_Description: Quality Control and Quality Assurance (QA/QC): All single-beam data found in the ASCII file exported from CARIS were imported into Esri ArcMap version 10.3.1, where a shapefile of the individual data points (x,y,z) was created and plotted in 1-m color coded intervals. First, all data were visually scanned for any obvious outliers or problems. A Python script was used for the purpose of evaluating elevation differences at the intersection of crossing tracklines by calculating the elevation difference between points at each intersection using an inverse distance weighting equation. GPS cycle slips, stormy weather conditions, and rough sea surface states can contribute to poor data quality. If discrepancies that exceed the acceptable error threshold were found, then the line in error was either removed or statically adjusted. The script was run on all vessel point data first on a vessel by vessel basis and then run a final time for all data points from all vessels collectively. Once the dataset passed all QA/QC procedures and manual editing steps, the data were considered final and included in the download files of this data release. Source_Used_Citation_Abbreviation: Grand_Bay_2015_SBB_Level_02_ITRF00.txt Process_Date: 2015 Source_Produced_Citation_Abbreviation: Grand_Bay_2015_SBB_Level_03_ITRF00.txt, Grand_Bay_2015_SBB_ITRF00.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Nancy T. DeWitt 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: ndewitt@usgs.gov Process_Step: Process_Description: Datum Transformation: The text file of the final XYZ soundings, was converted using version 3.6 of NOAA’s VDatum software conversion tool (reported vertical transformation error is 5.4 cm) from ITRF00 to the NAD83 reference frame and NAVD88 orthometric height using the NGS geoid model of 2012 (GEOID12A) and MLLW. Source_Used_Citation_Abbreviation: Grand_Bay_2015_SBB_ITRF00.txt Process_Date: 2015 Source_Produced_Citation_Abbreviation: Grand_Bay_2015_SBB_NAD83_NAVD88_GEOID12A.txt, Grand_Bay_2015_SBB_NAD83_MLLW.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Nancy T. DeWitt 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: ndewitt@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 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Grand_Bay_2015_SBB_ITRF00.txt Entity_Type_Definition: ASCII text file containing the processed single beam bathymetry x,y,z data in the native format of WGS84 (ITRF00) ellipsoid height. Entity_Type_Definition_Source: OPUS Attribute: Attribute_Label: ITRF00_X Attribute_Definition: WGS84 (ITRF00) X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 364277.197 Range_Domain_Maximum: 373969.113 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: ITRF00_Y Attribute_Definition: WGS84 (ITRF00) Y-coordinate (northing) of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3357380.344 Range_Domain_Maximum: 3364936.442 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: ITRF00_Lat Attribute_Definition: WGS84 (ITRF00) latitude of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 30.340961 Range_Domain_Maximum: 30.409386 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: ITRF00_Lon Attribute_Definition: WGS84 (ITRF00) longitude of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -88.412586 Range_Domain_Maximum: -88.311718 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: Year Attribute_Definition: Year of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: 2015 - Year of acquisition. Attribute: Attribute_Label: DOY Attribute_Definition: Day of Year (Julian Day) of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 148 Range_Domain_Maximum: 154 Attribute: Attribute_Label: HypackLine Attribute_Definition: Line identifier assigned at time of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Uses planed line number coupled with vessel FAN and start time for the line. Attribute: Attribute_Label: GPS_Week Attribute_Definition: GPS week of acquisition. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1846 Range_Domain_Maximum: 1847 Attribute: Attribute_Label: GPS_Second Attribute_Definition: GPS second of acquisition. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 53477.131 Range_Domain_Maximum: 593283.851 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Ellipsoid Attribute_Definition: Ellipsoid height of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -33.36 Range_Domain_Maximum: -29.53 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: DataType Attribute_Definition: SBB- Single-beam Bathymetry Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Type of acquisition - Single-beam Bathymetry Attribute: Attribute_Label: FAN Attribute_Definition: Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Sub-cruise identifier/field activity number assigned per vessel (15CC04 = RV Shark, 15CCT05 = RV Chum) Attribute: Attribute_Label: NAD83_X Attribute_Definition: NAD83 (CORS96) X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: VDatum version 3.6 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 364277.9500 Range_Domain_Maximum: 373969.8838 Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: NAD83_Y Attribute_Definition: NAD83 (CORS96) Y-coordinate (northing) of sample point, in meters. Attribute_Definition_Source: VDatum version 3.6 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3357379.7465 Range_Domain_Maximum: 3364935.8426 Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Year Attribute_Definition: Year of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: 2015 - Year of acquisition. Attribute: Attribute_Label: DOY Attribute_Definition: Day of Year (Julian Day) of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 148 Range_Domain_Maximum: 154 Attribute: Attribute_Label: HypackLine Attribute_Definition: Line identifier assigned at time of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Uses planed line number coupled with vessel FAN and start time for the line. Attribute: Attribute_Label: GPS_Week Attribute_Definition: GPS week of acquisistion. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1846 Range_Domain_Maximum: 1847 Attribute: Attribute_Label: GPS_Second Attribute_Definition: GPS second of acquisition. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 53477.131 Range_Domain_Maximum: 593283.851 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: NAVD88_G12 Attribute_Definition: NAVD88 (orthometric height) of sample point, in meters, with respect to GEOID12A. Attribute_Definition_Source: VDatum version 3.2 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.9457 Range_Domain_Maximum: -0.0054 Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: DataType Attribute_Definition: SBB- Single-beam Bathymetry Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Type of acquisition - Single-beam Bathymetry Attribute: Attribute_Label: FAN Attribute_Definition: Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Sub-cruise identifier/field activity number assigned per vessel (15CC04 = RV Shark, 15CCT05 = RV Chum) Detailed_Description: Entity_Type: Entity_Type_Label: Grand_Bay_2015_SBB_NAD83_NAVD88_GEOID12A.txt Entity_Type_Definition: ASCII text file containing the processed single beam bathymetry x,y,z data transformed to the North American Datum of 1983 (NAD83) geodetic datum and North American Vertical Datum of 1988 (NAVD88) orthometric height, derived using the GEOID12A model. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: Grand_Bay_2015_SBB_NAD83_MLLW.txt Entity_Type_Definition: ASCII text file containing the processed single-beam bathymetry x,y,z data transformed to the North American Datum of 1983 (NAD83) Mean Lower Low Water (MLLW). Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: NAD83_X Attribute_Definition: NAD83 (CORS96) X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: VDatum version 3.6 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 364277.95 Range_Domain_Maximum: 373969.88 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: NAD83_Y Attribute_Definition: NAD83 (CORS96) X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: VDatum version 3.6 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3357379.74 Range_Domain_Maximum: 3364895.15 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Year Attribute_Definition: Year of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: 2015 - Year of acquisition. Attribute: Attribute_Label: DOY Attribute_Definition: Day of Year (Julian Day) of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 148 Range_Domain_Maximum: 154 Attribute: Attribute_Label: HypackLine Attribute_Definition: Line identifier assigned at time of acquisition. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Uses planed line number coupled with vessel FAN and start time for the line. Attribute: Attribute_Label: GPS_Week Attribute_Definition: GPS week of acquisition. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1846 Range_Domain_Maximum: 1847 Attribute: Attribute_Label: GPS_Second Attribute_Definition: GPS second of acquisition. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 53477.131 Range_Domain_Maximum: 593283.851 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: MLLW Attribute_Definition: Mean Lower Low Water (MLLW) height of sample point, in meters. Attribute_Definition_Source: VDatum version 3.6 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.8345 Range_Domain_Maximum: 0.1081 Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: DataType Attribute_Definition: SBB- Single-beam Bathymetry Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Type of acquisition - Single-beam Bathymetry. Attribute: Attribute_Label: FAN Attribute_Definition: Field Activity Number Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Sub-cruise identifier/field activity number assigned per vessel (15CC04 = RV Shark, 15CCT05 = RV Chum) 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_Position: Researcher I 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) 502-8000 Contact_Electronic_Mail_Address: cstalk@usgs.gov Resource_Description: Grand_Bay_2015_SBB_ITRF00.txt, Grand_Bay_2015_SBB_NAD83_MLLW.txt, Grand_Bay_2015_SBB_NAD83_NAVD88_GEOID12A.txt Distribution_Liability: This publication was prepared by an agency of the United States Government. Although these data were 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, 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: ASCII File_Decompression_Technique: ZIP Transfer_Size: 153 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7NP22M2/data/2015-315-FA_SBB_xyz.zip Fees: none Technical_Prerequisites: The ASCII text files contained in the .zip archive can be accessed with any standard text file reader. Metadata_Reference_Information: Metadata_Date: 20201013 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: Researcher I 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) 502-8000 Contact_Electronic_Mail_Address: cstalk@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_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