Metadata: Identification_Information: Citation: Citation_Information: Originator: Chelsea A. Stalk Originator: Andrew S. Farmer Originator: Jennifer L. Miselis Publication_Date: 20201005 Title: Coastal Single-beam Bathymetry Data Collected in August 2019 from Cedar Island, Virginia Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P927Q8M1 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.5066/P927Q8M1 Description: Abstract: Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS - SPCMSC) in St. Petersburg, Florida, conducted a single-beam bathymetric survey of Cedar Island, Virginia, August 9-15, 2019. During this study, bathymetry data were collected aboard a towed seismic sled outfitted with a single-beam echosounder. Purpose: To evaluate shoreface morphology and geology along Cedar Island, Virginia, scientists from the USGS - SPCMSC conducted a bathymetric survey of Cedar Island, VA during Field Activity Number (FAN) 2019-332-FA. The objectives of the data collection were to map shoreface geology and morphology in support of the Coastal Sediment Availability and Flux (CSAF) Project. This dataset, Cedar_Island_2019_SBES_xyz.zip consists of single-beam horizontal position (x,y) and vertical (z) elevation data collected within the nearshore zone of Cedar Island. Additional survey and data details are available from the Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-332-FA. Supplemental_Information: For the single-beam bathymetry data, the differential positioning was obtained through post-processing the base station data to the rover.The bathymetry data were collected and processed in the World Geodetic System of 1984 (WGS84[G1762]) vertical and horizontal datums and were subsequently transformed using the National Oceanic and Atmospheric Administration's (NOAA) VDatum version 4.1 transformation software (https://vdatum.noaa.gov/) horizontally into the North American Datum of 1983 (NAD83 [2011]) and vertically into the North American Vertical Datum of 1988 (NAVD88) relative to the GEOID model of 2012B (GEOID12B). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20190809 Ending_Date: 20190815 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.615794 East_Bounding_Coordinate: -75.537897 North_Bounding_Coordinate: 37.695914 South_Bounding_Coordinate: 37.570155 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:f867281e-a85e-42c3-a2fd-e2cd4d9e678d Theme: Theme_Keyword_Thesaurus: Global Change Master Science Directory (GCMD) Theme_Keyword: OCEAN > COASTAL PROCESSES > BARRIER ISLANDS Theme_Keyword: OCEAN > COASTAL PROCESSES > BEACHES Theme_Keyword: DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: marine geophysics Theme_Keyword: geophysics Theme_Keyword: bathymetry Theme_Keyword: single-beam echo sounder Theme_Keyword: ocean characteristics Theme_Keyword: ocean processes Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: elevation Theme_Keyword: oceans Theme_Keyword: location Theme_Keyword: imageryBaseMapsEarthCover Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Wachapreague Place_Keyword: Accomack County Place_Keyword: Virginia Place_Keyword: Atlantic Ocean Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2019 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. These data should not be used for navigational purposes. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Electronics Technician (Marine Iinstrumentation) Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. S 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: Funding and (or) support for this study were provided by the USGS Coastal and Marine Hazards and Resources Program, specifically the Costal Sediment Availability and Flux (CSAF) project. The authors would like to thank Nancy DeWitt and Arnell Forde of the USGS - St. Petersburg, Florida for their thoughtful peer reviews. Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 10 Version 1709 (Build 16299.666) Service Pack 1; Environmental Systems Research Institute (Esri) ArcGIS 10.6.0.8321 Cross_Reference: Citation_Information: Originator: Arnell S. Forde Originator: Chelsea A. Stalk Originator: Jennifer L. Miselis Publication_Date: 20200930 Title: Archive of Chirp Subbottom Profile Data Collected in 2019 from Cedar Island, Virginia Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P9S75Q0U Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.5066/P9S75Q0U Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of the data is determined during data collection. This dataset is derived from a single survey using similar equipment, set-ups, and staff; therefore, the dataset is internally consistent. Methods are employed to maintain data collection consistency aboard the platforms. 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 recorded manually and then digitally entered into their respective programs. Offsets between the single-beam transducers, motion reference units, and the global positioning system (GPS) antenna reference point (ARP) were measured and accounted for in post-processing. Differential Global Positioning System (DGPS) coordinates were obtained through post-processing using the software Online Positioning User Service (OPUS) maintained by the NOAA and the NGS , 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 data release contains single-beam horizontal position (x,y) and vertical (z) elevation data from August 2019, collected within nearshore waters of Cedar Island, Virginia. Users are advised to read the complete metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All static base station sessions were processed through OPUS. The OPUS solutions were entered into a spreadsheet to compute a final, time-weighted position (latitude, longitude, and ellipsoid height) for the utilized base station. The time-weighted position for NGS benchmark AJ4587 (https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=AJ4587) was calculated and used in subsequent processing steps. Accuracy pertaining to the base station coordinates utilized are as follows: Horizontal = +/- 0.00027 seconds (s) or approximately 0.003 meters (m). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: All static base station sessions were processed through OPUS. The OPUS solutions were entered into a spreadsheet to compute a final, time-weighted position (latitude, longitude, and ellipsoid height) for the utilized base station. The time-weighted position for NGS benchmark AJ4587 (https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=AJ4587) was calculated and used in subsequent processing steps (accuracy is computed to be +/- 0.006 m). The kinematic (rover) trajectories were processed using GrafNav version 8.70 software by Novatel, Inc. Due to GPS errors associated with a system failure at the time of acquisition, lines from survey day 222 (8/10/2019) utilized real-time navigation, and therefore during the quality control/quality assurance (QA/QC) processing step, some lines with known GPS issues were statically adjusted by the average crossing offset. The following lines have the associated vertical uncertainty, which should be considered before use (Line 0048_1731: -0.3826 m, 0049_1709_0001: -0.4578 m, 0050_1648: -0.4182 m, 0004_1930: +0.2767 m and Line 0001_1425: -0.2764 m). Transformed data have an additional reported vertical transformation error of 7.6158 centimeters (cm). Lineage: Process_Step: Process_Description: GPS Acquisition: One GPS base station was established on NGS benchmark AJ4587 (https://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=AJ4587), located within Seaside Park at the corner of Main Street and Atlantic Avenue, Wachapreague, VA. The base station was continually occupied and equipped with an Ashtech Proflex 800 GPS receiver recording 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via Thales Choke-ring antennas, recording at a rate of 0.1 s. Process_Date: 2019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Chelsea Stalk Contact_Position: Electronics Technician (Marine Instrumentation) Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. S 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 USGS FAN 2019-332-FA and encompasses data from a single survey platform, a Chirp seismic sled, towed by the R/V Sallenger, a 26 ft fiberglass research vessel. A total of 299.075 line-km (62 lines) were surveyed. Boat motion was recorded at 50-millisecond (ms) intervals using an SBG motion sensor. HYPACK (version 18.1.8.0), 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 aboard the R/V Sallenger. Depth soundings were recorded at 50-ms intervals using an Odom Echotrac CV100 echo sounder with a 200-kilohertz (kHz) 4-degree transducer. Data from the GPS receiver, motion sensor, and echo sounder 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 Coordinated Universal Time (UTC). Sound velocity profile (SVP) measurements were collected using a single SonTek Castaway conductivity, temperature, and depth (CTD) instrument. The instrument was periodically cast overboard to observe changes in water column speed of sound (SOS). A total of 26 successful sound velocity casts were taken throughout the survey at an average depth of 3.99 m, and on average produced a sound velocity of 1519.08 meters per second (m/s). Process_Date: 2019 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Electronics Technician (Marine Instrumentation) 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 value of the GPS base station is the time weighted average (TWA) of all current survey occupations. The base station coordinates were imported into GrafNav version 8.7 (Waypoint Product Group) and the kinematic GPS data from the survey platform were post-processed to the concurrent GPS session data at the base station. 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 0.1 s and exported in American Standard Code for Information Interchange (ASCII) text format. The GPS data were processed and exported in the WGS84 (G1762) geodetic datum. Process_Date: 2019 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Electronics Technician (Marine Instrumentation) 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: All bathymetry data were processed using CARIS HIPS and SIPS (Hydrographic Information Processing System and Sonar Information Processing System) version 11.2.3. The raw HYPACK data files were imported into CARIS, the differentially corrected navigation files were imported using the generic data parser (GDP) tool, and any SVP profile casts were entered and edited using the SVP editor. Lines from survey day 222 (8/10/2019) utilized real-time navigation due to GPS errors associated with a system failure. To utilize real-time navigation, the GPS heights were extracted from the raw Hypack (.RAW) files utilizing the CARIS command Line GUI (Version 2.0.4), and then written into an ASCII text file, which could be read by the GDP. Once GPS heights were applied using the GDP, a smoothing (moving average) filter of 60 seconds and a threshold of 1 was applied to data. The bathymetric data components (position, motion, depth, and SOS) for all data 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 (G1762) ellipsoid height, in meters. Process_Date: 2019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Chelsea A. Stalk Contact_Position: Electronics Technician (Marine Instrumentation) 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, Quality Assurance (QA/QC): All single-beam data exported from CARIS were imported into Esri ArcMap version 10.6.0, where a shapefile of the individual sounding data points (x,y,z) was created and plotted in 0.25-m color coded intervals. First, all data were visually scanned for any obvious outliers or problems. Next, a track line shapefile was produced using X-tools Pro "Make Polylines from Points" function. Utilizing both the x,y,z (point) and track-line (polyline) shapefiles, an in house Python script evaluated elevation differences at the intersection of crossing track lines by calculating the elevation difference between points at each intersection using an inverse distance weighting equation with a search radius of 1 m. The root mean square error (RMSe) when crossing a track line it previously surveyed was 23.5 cm. Lines from survey day 222 (8/10/2019), which utilized real-time navigation, had crossing offsets that exceeded the published Odom CV100 instrument accuracy (1 cm +/- 0.7 percent depth) and therefore were statically (vertical) adjusted by the average crossing offset. The following vertical adjustments were made, Line 0048_1731: -0.3826 m, 0049_1709_0001: -0.4578 m, 0050_1648: -0.4182 m, 0004_1930: +0.2767 m and Line 0001_1425: -0.2764 m. Once these adjustments were made, the crossing program was run for a second time, which produced RMSe results of 19.86 cm crossing error, however 91% of all crossings are under 10 cm. The final adjusted file was exported from Esri ArcMap as an x,y,z text (.txt) file and made available in the download section of this data release, along with the populated track line shapefiles. Source_Used_Citation_Abbreviation: 2019_332_CedarIsland_SBES_WGS84_UTM18N_Level_03_xyz.txt Process_Date: 2019 Source_Produced_Citation_Abbreviation: Cedar_Island_2019_SBES_WGS84_xyz.txt Cedar_Island_2019_SBES_WGS84_Tracklines.shp Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Chelsea A. Stalk Contact_Position: Electronics Technician (Marine Instrumentation) 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: NOAA's VDatum v.3.9 was used to transform single-beam data points (x,y,z) from their data acquisition datum (WGS84 [G1762]) to the NAD83 reference frame with NAVD88 elevations using the NGS geoid model 2012B (GEOID12B). For conversion from the WGS84 ellipsoid height to NAVD88 orthometric height, there is a total of 7.616 cm of uncertainty in the transformation (https://vdatum.noaa.gov/docs/est_uncertainties.html). Resultant data files have been made available in the downloads section of this data release. Source_Used_Citation_Abbreviation: Cedar_Island_2019_SBES_WGS84_xyz.txt Process_Date: 2019 Source_Produced_Citation_Abbreviation: Cedar_Island_2019_SBES_NAD83_NAVD88_G12B_xyz.txt Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Chelsea A. Stalk Contact_Position: Electronics Technician (Marine Instrumentation) 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: 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: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 480,440 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -75.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.6096 Ordinate_Resolution: 0.6096 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum 1988 Altitude_Resolution: 0.01 Altitude_Distance_Units: meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Cedar_Island_2019_SBES_WGS84_xyz.txt Entity_Type_Definition: Comma-delimited x,y,z file containing location, elevation, and date information pertaining to data collected on a towed chirp seismic sled, nearshore Cedar Island, Virginia in 2019. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: WGS84_UTM18N_X Attribute_Definition: WGS84 UTM x-axis coordinate (Zone 18N) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 445711.948 Range_Domain_Maximum: 452499.796 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: WGS84_UTM18N_Y Attribute_Definition: WGS84 UTM y-axis coordinate (Zone 18N) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4158302.116 Range_Domain_Maximum: 4172213.517 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Ellipsoid Attribute_Definition: Z-value (elevation) in WGS84, ellipsoid height Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -51.666 Range_Domain_Maximum: -38.831 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: WGS84_Lat Attribute_Definition: WGS84 y-axis coordinate (latitude) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.570393 Range_Domain_Maximum: 37.695743 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: WGS84_Long Attribute_Definition: WGS84 x-axis coordinate (longitude) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.614966 Range_Domain_Maximum: -75.53876 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: Year Attribute_Definition: Calendar year of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2019 Range_Domain_Maximum: 2019 Attribute: Attribute_Label: DOY Attribute_Definition: Day of year of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 221 Range_Domain_Maximum: 226 Attribute: Attribute_Label: UTC_Time Attribute_Definition: UTC time of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12:31:49.28 Range_Domain_Maximum: 21:22:30.33 Attribute: Attribute_Label: Hypack_Line Attribute_Definition: Line number and start of line UTC time. Attribute_Definition_Source: HYPACK/U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: N/A Detailed_Description: Entity_Type: Entity_Type_Label: Cedar_Island_2019_SBES_NAD83_NAVD88_G12B_xyz.txt Entity_Type_Definition: Comma-delimited x,y,z file containing location, elevation, and date information. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: NAD83_UTM18N_X Attribute_Definition: NAD83 UTM x-axis coordinate (Zone 18N) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 445712.447 Range_Domain_Maximum: 452500.294 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: NAD83_ UTM18N_Y Attribute_Definition: NAD83 UTM y-axis coordinate (Zone 18N) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4158301.151 Range_Domain_Maximum: 4172212.549 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: NAVD88_G12B Attribute_Definition: Z-value (elevation) in NAVD88 GEOID12B, orthometric height Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -13.583 Range_Domain_Maximum: -0.772 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: NAD83_Lat Attribute_Definition: NAD83 y-axis coordinate (latitude) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.570393 Range_Domain_Maximum: 37.695734 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: NAD83_Long Attribute_Definition: NAD83 x-axis coordinate (longitude) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.61496 Range_Domain_Maximum: -75.53876 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: Year Attribute_Definition: Calendar year of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2019 Range_Domain_Maximum: 2019 Attribute: Attribute_Label: DOY Attribute_Definition: Day of year of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 221 Range_Domain_Maximum: 226 Attribute: Attribute_Label: UTC_Time Attribute_Definition: UTC time of data acquisition Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12:31:49.28 Range_Domain_Maximum: 21:22:30.33 Attribute: Attribute_Label: Hypack_Line Attribute_Definition: Line number and start of line UTC time. Attribute_Definition_Source: HYPACK/U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: N/A Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Electronics Technician (Marine Instrumentation) 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: Cedar_Island_2019_SBES_WGS84_xyz.txt, Cedar_Island_2019_SBES_NAD83_NAVD88_G12B_xyz.txt, Cedar_Island_2019_SBES_WGS84_Tracklines.shp Distribution_Liability: This digital 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, Shapefile File_Decompression_Technique: ZIP Transfer_Size: 22.3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P927Q8M1/data/Cedar_Island_2019_SBES_xyz.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P927Q8M1/data/Cedar_Island_2019_SBES_Tracklines.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chelsea A. Stalk Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Electronics Technician (Maine Instrumentation) 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