Identification_Information: Citation: Citation_Information: Originator: Chelsea A. Stalk Originator: James G. Flocks Originator: Julie C. Bernier Originator: Nancy T. DeWitt Originator: Jake J. Fredericks Originator: Kyle W. Kelso Originator: Andrew S. Farmer Originator: Thomas M. Tuten Originator: Hunter S. Wilcox Publication_Date: 20180628 Title: Nearshore Single-Beam Bathymetry XYZ Data Collected in 2017 from the Chenier Plain, Louisiana Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7CV4GZH Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7CV4GZH Description: Abstract: As a part of the Barrier Island Comprehensive Monitoring Program (BICM), scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted a nearshore single-beam bathymetry survey along the Chenier Plain, Louisiana from Marsh Island to Sabine Pass. The goal of the BICM program is to provide long-term data on Louisiana's coastline and use this data to plan, design, evaluate, and maintain current and future barrier island restoration projects. The data described in this metadata record will provide baseline bathymetric information for future research investigating island evolution, sediment transport, recent- and long-term geomorphic change and will support modeling of future changes in response to restoration and storm impacts. Over 3,300-line kilometers of single-beam data were acquired during two field missions: USGS Field Activity numbers (FAN) 2017-323-FA, conducted June 2-14, and 2017-324-FA, which occurred July 8-16, 2017 aboard four separate survey vessels. The final x,y,z data are provided in the native World Geodetic System of 1984 (WGS84) G1150 acquisition format (which is equivalent to the International Terrestrial Reference Frame of 2000 [ITRF00]), with values ranging from -26.62 m to -68.94 m ellipsoid height, as well as the North American Datum of 1983 (NAD83) reference frame and the North American Vertical Datum of 1988 (NAVD88) GEOID12A , with values ranging from 0.00 to -30.13 m. Purpose: Single-beam bathymetry data were collected in support of the BICM program along the Chenier Plain of Louisiana's coastline to provide current bathymetry and shoreline information, as well as supplement historical archives for change analysis. The goal of the BICM program is to provide long-term data along the Louisiana coastline and use this data to plan, design, evaluate and maintain current and future barrier island restoration projects. 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 ITRF00 to NAD83 using the GEOID12A model (NOAA NGS VDatum software version 3.2 - http://vdatum.noaa.gov/). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170602 Ending_Date: 20170716 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -93.831975 East_Bounding_Coordinate: -91.749388 North_Bounding_Coordinate: 29.776323 South_Bounding_Coordinate: 29.434433 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: geophysics Theme_Keyword: bathymetry Theme_Keyword: single-beam echo sounder Theme_Keyword: field monitoring stations Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Coastal Protection and Restoration Authority of Louisiana Theme_Keyword: CPRA Theme_Keyword: marine geology 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: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: SPCMSC Theme_Keyword: Barrier Island Comprehensive Monitoring Program Theme_Keyword: BICM Theme_Keyword: 2017-323-FA Theme_Keyword: 2017-324-FA Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: Louisiana Place_Keyword: West Central Louisiana Coastal Place_Keyword: Gulf of Mexico Place_Keyword: Grand Chenier Place_Keyword: Sabine Pass Place_Keyword: Calcasieu Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: datum Stratum_Keyword: water Stratum_Keyword: shoreline Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: June-July 2017 Access_Constraints: none Use_Constraints: 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 7 Version 6.1 (Build 7601) 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. Methods are employed to maintain data collection consistency aboard all survey platforms. During mobilization, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey platform. All 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, the survey operations commence. The single-beam systems on each survey platform have a dedicated computer, equipment and software versions for each system and platform were consistent at all times throughout the survey. Offsets between the single beam transducers, motion reference units, and the Ashtech antenna reference point (ARP) were measured and accounted for in post-processing. Differential Global Positioning System (DGPS) coordinates were obtained using post-processing software packages (NGS?s OPUS, and Waypoint Product Group GrafNav, version 8.7. Logical_Consistency_Report: These datasets are from two field efforts 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 maintained by NOAA and the NGS. The OPUS solutions were entered into a spreadsheet to compute a final, time-weighted position (latitude, longitude, and ellipsoid height) for each base station. The time-weighted positions for all base stations occupying established NGS benchmarks (DN4165, DH3817, DN4168, AV0360, and DJ9378) were compared against the published NGS coordinates. The time-weighted positions at base stations DN4165, DH3817, and DN4168 were within 3 standard deviations of the published positions for each NGS mark (DN4165: +/-0.31 cm North, +/-0.27 cm East; DH3817: +/-0.66 cm North, +/-0.57 cm East; and DN4168: +/-0.29 cm North +/-0.25 cm East), and the published positions for those base stations were used in subsequent processing steps. The time-weighted positions at base stations AV0360 and DJ9378, however, varied by more than 3 standard deviations from the published coordinates. At these base stations, the time-weighted average coordinates computed from the survey occupations were used. The horizontal variability of the base station coordinates at AV0360 and DJ9378 as well as UGSG-installed mark MIGP, and other marks ME18, and RFS1, were determined by calculating the maximum difference of any individual occupation from the time-weighted average latitude and longitude values (MIGP: 0.00030 seconds latitude, 0.00021 seconds longitude; ME18: 0.00022 seconds latitude, 0.00014 seconds longitude; RFS1: 0.00036 seconds latitude, 0.00035 seconds longitude; AV0360: 0.0022 seconds latitude, 0.00044 seconds longitude; and DJ9378: 0.0029 seconds latitude, 0.00018 seconds longitude). Continuously Operating Reference Station (CORS) station TXPT data were also utilized, reported horizontal error equals +/-1.2 cm east and north. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: All static base station sessions were processed through OPUS, which is maintained by NOAA and the NGS. The OPUS solutions were entered into a spreadsheet to compute a final, time-weighted position (latitude, longitude, and ellipsoid height) for each base station. The time-weighted positions for all base stations occupying established NGS marks (DN4165, DH3817, DN4168, AV0360, and DJ9378) were compared against the published NGS coordinates. The time-weighted positions at base stations DN4165, DH3817, and DN4168 were within 3 standard deviations of the published positions for each NGS mark (DN4165: +/-0.97 cm; DH3817: +/-2.80 cm; and DN4168: +/-0.98 cm), and the published positions for those base stations were used in subsequent processing steps. The time-weighted positions at base stations AV0360 and DJ9378, however, varied by more than 3 standard deviations from the published coordinates. At these base stations, the time-weighted average coordinates computed from the survey occupations were used. The vertical variability of the base station coordinates at AV0360 and DJ9378 as well as UGSG-installed mark MIGP, and other marks ME18, and RFS1, were determined by calculating the maximum difference of any individual occupation from the time-weighted average ellipsoid height values (MIGP: +/-2 cm; ME18: +/-3.2 cm; RFS1: +/-2.7 cm; AV0360: +/-1.4 cm; and DJ9378: +/-1.4 cm). CORS station TXPT data were also utilized, reported vertical error equals +/- 0.4 cm ellipsoid height. Lineage: Process_Step: Process_Description: GPS Acquisition: A total of 8 Geographic Positioning Systems (GPS) base stations were established throughout the survey area, 5 of which were located on NGS established marks, 1 on a USGS installed mark, and 2 on other marks within the Rockefeller National Wildlife Refuge. Located in the eastern portion of the survey area, NGS mark DN4165 is established at the mouth of the freshwater lock to the west of Marsh Island. USGS established mark MIGP, installed in 2016, is located on the western shore of Marsh Island. Near the middle of the survey area, RFS1 (markings Fish Lab 1), and ME18 were located on the grounds of the Rockefeller National Wildlife Refuge. In the western portion of the survey area, NGS mark DJ9378 is established near the northern grass edge of the boat ramp at the southern end of Calcasieu Pass, this mark was found damaged with a bent rod tip. Because of the damage, coordinates derived from survey occupations were used in final processing. NGS mark DH3817 is located off Highway 27 in Cameron city limits and mark AV0360 is located in Holly Beach on the grounds of the torn down church, near the stop sign. The most western NGS mark utilized is DN4168 which is located off highway 82 past the high school near the Sabine Pass Bridge. All base stations were occupied 24 hours and 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 a rate of 0.1 seconds (s). Process_Date: 2017 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: Cherokee Nation Technologies/U.S. Geological Survey's 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 Process_Step: Process_Description: Single-Beam Bathymetry Acquisition: The single-beam bathymetric data were collected under the USGS Field Activity Numbers (FAN) 2017-323-FA and 2017-324-FA, which encompass data from four separate survey platforms; The RV Sallenger (17BIM01, 17BIM05), a 26-foot (ft) Parker, collected 1,202.80 line-km (378 Lines), RV Jabba Jaw (17BIM02, 17BIM07), a shallow draft 22-ft Twin Vee collected 906.87 line-km (338 lines), the RV Shark (17BIM03, 17BIM07), a 12-ft Yamaha Personal Water Craft (PWC) collected 568.64 line-km (174 lines), and the RV Chum (17BIM04, 17BIM08), an additional 12-ft Yamaha PWC collected 720.38 line-km (251 lines). Boat motion was recorded at 50-millisecond (ms) intervals using a Teledyne TSS Dynamic Motion Sensor (TSS DMS-05) on the R/V Sallenger, R/V Jabba Jaw, and by use of a SBG Ellipse A #1 motion sensor aboard each PWC. HYPACK (version 16.1.8.0), 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. Depth soundings were recorded at 50-ms intervals using an Odom echotrac CV100 sounder with a 200-kilohertz (kHz) transducer on all vessels. Data from the GPS receiver, motion sensor, and fathometer were recorded in real-time aboard all 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 four SonTek Castaway Conductivity, Temperature, and Depth (CTD) instruments as well as one Valport mini sound velocity profiler (SVP). The instruments were periodically cast overboard to observe changes in water column speed of sound (SOS). A total of 392 successful sound velocity casts were taken throughout the survey at an average depth of 5.06 meters, and on average produced a sound velocity of 1519.68 meters per second (m/s). Process_Date: 2017 Source_Produced_Citation_Abbreviation: HYPACK raw (*.RAW ) data files were produced for each trackline surveyed. In addition, HYPACK target files for any targets (*.TGT) and speed of sound files (*.TXT) in text format were also recorded digitally, during data collection. Process_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 Process_Step: Process_Description: Differentially Corrected Navigation Processing: The coordinate values of the GPS base stations are the time-weighted average of values obtained from the NGS?s 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 0.1s and exported in ASCII text format to replace the uncorrected rover positions recorded during acquisition. The GPS data were processed and exported in the WGS84 G1150 geodetic datum. Process_Date: 2017 Source_Produced_Citation_Abbreviation: Post-processed differential navigation data for the rover (boat) were created 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: Cherokee Nation Technologies/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) 502-8000 Contact_Electronic_Mail_Address: cstalk@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 10.2.1. The raw HYPACK 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, motion, 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, ellipsoid height in meters. Source_Used_Citation_Abbreviation: Post-processed differential navigation data, raw HYPACK bathymetric data, and sound velocity data were all exported in ASCII text format. Process_Date: 2017 Source_Produced_Citation_Abbreviation: 17BIM01_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM02_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM03_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM04_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM05_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM06_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM07_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM08_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Cherokee Nation Technologies/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) 502-8000 Contact_Electronic_Mail_Address: cstalk@usgs.gov Process_Step: Process_Description: Quality Control and Quality Assurance (QA/QC): All single-beam data 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 0.5-m color coded intervals. First, all data were visually scanned for any obvious outliers or problems. Next, a Python script was used to evaluate 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. In all cases where discrepancies in the data, or high (>0.30 m) crossing values were found, there was sufficient data coverage to delete the problem data points and/or lines. 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 within a merged file. A total of 4,406 crossing values were observed throughout the survey area, 95% of which are less than 0.30m. Once the dataset passed all QA/QC procedures and manual editing steps, the data were considered final and included in the download section of this data release. Source_Used_Citation_Abbreviation: 17BIM01_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM02_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM03_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM04_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM05_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM06_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM07_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt 17BIM08_SBB_Level_03_xxx_WGS84_ITRF00_UTM15N.txt Process_Date: 2017 Source_Produced_Citation_Abbreviation: Chenier_Plain_2017_SBB_Level_03B_xxx_ITRF00.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Cherokee Nation Technologies/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) 502-8000 Contact_Electronic_Mail_Address: cstalk@usgs.gov Process_Step: Process_Description: Datum Transformation: The text file, Chenier_Plain_2017_SBB_Level_03B_xxx_ITRF00.txt, was converted using NOAA?s VDatum software conversion tool version 3.6 (reported vertical transformation error is 7.6158 cm) from ITRF00 to the NAD83 reference frame and NAVD88 orthometric height using the National Geodetic Survey (NGS) geoid model of 2012A (GEOID12A). Source_Used_Citation_Abbreviation: Chenier_Plain_2017_SBB_Level_03B_xxx_ITRF00.txt Process_Date: 2017 Source_Produced_Citation_Abbreviation: Chenier_Plain_2017_SBB_Level_03B_xxx_NAD83_NAVD88_G12A.txt Process_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 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Chenier_Plain_2017_SBB_Level_03B_xxx_ITRF00.txt Entity_Type_Definition: Comma-Separated Values (CSV) file containing processed single-beam bathymetry x,y,z data collected in 2017, during the Chenier Plain (Louisiana) survey. Data were acquired in WGS84 (G1150), which is equivalent to ITRF00. Entity_Type_Definition_Source: USGS 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: 419507.981 Range_Domain_Maximum: 621271.670 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: 3256693.907 Range_Domain_Maximum: 3294026.130 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Ellipsoid Attribute_Definition: WGS84 (G1150) ellipsoid height of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -68.939 Range_Domain_Maximum: -26.619 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: ITRF00_Lat Attribute_Definition: WGS84 (ITRF00) latitude of sample point, in decimal degrees. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 29.434433 Range_Domain_Maximum: 29.776323 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: ITRF00_Long Attribute_Definition: WGS84 (ITRF00) longitude of sample point, in decimal degrees. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.831975 Range_Domain_Maximum: -91.749388 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: Year Attribute_Definition: Year data were acquired in YYYY format. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2017 Range_Domain_Maximum: 2017 Attribute: Attribute_Label: DOY Attribute_Definition: Julian day, day of year (DOY) the data were acquired. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 153 Range_Domain_Maximum: 197 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: UTCTime Attribute_Definition: Coordinated Universal Time (UTC) assingned to each data point durring acquisition. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: HH:MM:SS.SSS Attribute: Attribute_Label: HypackLine Attribute_Definition: Line identification assigned by Hypack durring acquisition. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: Vessel FAN_line number_UTC time of the start of the line Detailed_Description: Entity_Type: Entity_Type_Label: Chenier_Plain_2017_SBB_Level_03B_xxx_NAD83_NAVD88_G12A.txt Entity_Type_Definition: CSV file containing processed single-beam bathymetry x,y,z data from the 2017 Chenier Plain survey. This dataset has been transformed from the original ITRF00 datum to NAD83 NAVD88 using the geoid model 2012A (GEOID12A). Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: NAD83_X Attribute_Definition: NAD83 (2011) X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 419508.887 Range_Domain_Maximum: 621272.532 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: NAD83_Y Attribute_Definition: NAD83 (2011)Y-coordinate (northing) of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3256693.392 Range_Domain_Maximum: 3294025.613 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: NAVD88_G12A Attribute_Definition: NAVD88 using GEOID12A height of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -42.19 Range_Domain_Maximum: -0.00 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: NAD83_Ellipsoid Attribute_Definition: NAD83 ellipsoid height of sample point, in meters. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -67.58 Range_Domain_Maximum: -25.25 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: NAD83_Lat Attribute_Definition: NAD83 (2011) latitude of sample point, in decimal degrees. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 29.4344281 Range_Domain_Maximum: 29.7763184 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: NAD83_Long Attribute_Definition: NAD83 (2011) longitude of sample point, in decimal degrees. Attribute_Definition_Source: OPUS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.831975 Range_Domain_Maximum: -91.749379 Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: Year Attribute_Definition: Year data were acquired in YYYY format. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2017 Range_Domain_Maximum: 2017 Attribute: Attribute_Label: DOY Attribute_Definition: Julian day, day of year (DOY) the data were acquired. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 153 Range_Domain_Maximum: 197 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: UTCTime Attribute_Definition: Coordinated Universal Time (UTC) assigned to each data point during acquisition. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: HH:MM:SS.SSS Attribute: Attribute_Label: HypackLine Attribute_Definition: Line identification assigned by Hypack durring acquisition. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Unrepresentable_Domain: Vessel FAN_line number_UTC time of the start of the line 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: Chenier_Plain_2017_SBB_Level_03B_xxx_ITRF00.txt, Chenier_Plain_2017_SBB_Level_03B_xxx_NAD83_NAVD88_G12A.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: 547 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7CV4GZH/data/Chenier_Plain_2017_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: 20180626 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 Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998