Metadata: Identification_Information: Citation: Citation_Information: Originator: Nancy T. DeWitt Originator: James G. Flocks Originator: Andrew S. Farmer Originator: Cheryl J. Hapke Publication_Date: 20200901 Title: Multibeam Bathymetry Data Collected in 2018 Offshore of Cedar Key, Florida Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P9ZIZFSM Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9ZIZFSM Description: Abstract: An Ellipsoidally Referenced Survey (ERS) using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration, was conducted by the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) offshore of Cedar Key, Florida (FL) during two legs, November 27-30, and December 10-13, 2018. This dataset, Cedar_Key_MBB_2018_xyz.zip, includes the processed elevation point data (x,y,z), as derived from a 1-meter (m) bathymetric grid. Purpose: The SPCMSC conducted a multibeam bathymetry survey of a selected area offshore Cedar Key, FL for the Florida Big Bend Pilot Study funded by the USGS and the National Oceanic Atmospheric Administration (NOAA). The study involves federal, state, and local agencies whom are taking a comprehensive approach to investigate the interconnections between the subsurface geology and the ecological processes that support the diverse coastal habitat. This research will help improve design planning and execution for effective restoration efforts. Data were collected during USGS field activity number (FAN) 2018-361-FA. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-361-FA. Supplemental_Information: The processed sonar data are provided as American Standard Code for Information Interchange (ASCII) x,y,z point data files. These values are not the individual soundings, but nodes from a 1-m bathymetric grid. The Z value for the node is generated by utilizing a Combined Uncertainty and Bathymetry Estimator (CUBE) surface and has an estimated total value of uncertainty (Calder and Wells, 2007). The bathymetry data were collected and processed in the World Geodetic System of 1984 (WGS84) [realization G1762] vertical and horizontal datums. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20181127 Ending_Date: 20181213 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.15216408 East_Bounding_Coordinate: -83.02316928 North_Bounding_Coordinate: 29.05588603 South_Bounding_Coordinate: 28.95396294 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:0e94d1f8-51e9-4290-96cd-6e6fa3016639 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: elevation Theme_Keyword: location Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: bathymetry Theme_Keyword: multibeam sonar Theme_Keyword: ocean characteristics Theme_Keyword: ocean processes Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: hydrography Theme_Keyword: geophysics Theme_Keyword: seafloor mapping Theme_Keyword: Teledyne Reson T50-P Theme_Keyword: Applanix POS MV Wavemaster II Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: SPCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Florida Place_Keyword: Cedar Key Place_Keyword: Gulf of Mexico Place: Place_Keyword_Thesaurus: None Place_Keyword: Florida Big Bend Place_Keyword: Offshore Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: November and December 2018 Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: Nancy T. DeWitt Data_Set_Credit: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Microsoft Windows 7 Version 6.2 (Build 9200) Service Pack 1 Cross_Reference: Citation_Information: Originator: Calder, B.R. and Wells, D.E. Publication_Date: 20070129 Title: CUBE User's Manual Publication_Information: Publication_Place: Durham, NH Publisher: University of New Hampshire, Center for Coastal and Ocean Mapping Other_Citation_Details: pages 3-12 Online_Linkage: https://scholars.unh.edu/ccom/1217 Cross_Reference: Citation_Information: Originator: International Hydrographic Organization Publication_Date: 2008 Title: IHO Standards for Hydrographic Surveys Publication_Information: Publication_Place: 4, quai Antoine 1er B.P. 445 - MC 98011 MONACO Cedex Principauté de Monaco Publisher: International Hydrographic Bureau Other_Citation_Details: pages 15-16 Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This dataset was from one research cruise with two legs and was therefore internally consistent per leg. Methods were employed to maintain data collection consistency aboard the platform for each leg. 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 digitally entered into their respective programs. Logical_Consistency_Report: This file represents the post-processed bathymetric data (x,y,z) collected during a multibeam bathymetry survey. Completeness_Report: These are complete post-processed bathymetric data points x,y,z from multibeam data collected offshore of Cedar Key, FL, November and December 2018, and exported as an ERS. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All data were collected and processed to meet or exceed International Hydrographic Organization (IHO) Special Order standards for positioning and depth (IHO, 2008). Individual Total Propagated Uncertainty (TPU) values associated with each node are available in the XYZ file. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: All data were collected and processed to meet or exceed IHO Special Order standards for positioning and depth (IHO, 2008). Individual TPU values associated with each node are available in the XYZ file. Lineage: Process_Step: Process_Description: Acquisition: A multibeam bathymetry survey was conducted using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration. The pair of Mills Cross [configuration] transmit and receive arrays, were placed side-by-side within a bracket that oriented them at opposing 30-degree angles (relative to horizontal). The bracket was pole-mounted on the starboard gunnel of the R/V Sallenger, a 26-foot (ft) fiberglass research vessel. The sonar arrays were oriented athwartship (primary and secondary arrays facing outward and down to port and starboard, respectively) and located approximately 1-m below the waterline when deployed. An Applanix POS MV Wavemaster II V5 inertially aided navigation system was used for timing, positioning, and attitude. The Inertial Measurement Unit (IMU) was mounted atop the sonar bracket just aft of the pole. Two Trimble GA830 Global Navigation Satellite System antennas were affixed atop the cabin approximately amidships of the vessel, two meters apart, port-starboard. An AML Oceanographic Micro-X sound velocity sensor was used for speed of sound readings at the sonar head. A Sontek CastAway CTD was used for measuring sound velocity profiles. Hydrographic survey acquisition and processing software, HYPACK/HYSWEEP (version 2018.9 for both legs) managed data inputs from sensors and produced two files (.RAW and .HSX). Data were collected in WGS84 [G1762] Universal Transverse Mercator (UTM) Zone 17 North (17N) coordinates. Process_Date: 2019 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_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: Processing: Positioning and attitude data were post-processed in Applanix POSPac MMS (POSPac) software version 8.3 Service Pack 3. Raw position files were imported into POSPac and processed with the IN-Fusion PP-RTX processing mode utilizing Trimble CenterPoint RTX technology; creating smoothed best estimate of trajectory (SBET) files and dynamic error files (SMRMSG) for each day of the survey. Bathymetric data were post-processed in CARIS Hydrographic processing software HIPS/SIPS version 11.1. HYPACK acquisition files (.HSX) were first imported into CARIS and then post-processed navigation files (SBET and SMRMSG) were imported and applied. Additionally, GPS tide (GPS tidal corrections utilize GPS height information from real time survey observations to obtain an ellipsoid height) was computed and sound velocity profiles were applied. Roll calibration was also performed, as necessary. TPU was calculated from real time values recorded in the HSX and the SMRMSG files. Data were filtered to exclude any points with RESON Quality flags of 0, 1, and 2 (these flags are assigned to individual soundings at the time of acquisition and are a metric of pass/fail in regards to both brightness and collinearity: 0 = fail both, 1 = pass brightness only, 2 = pass collinearity only), as well as soundings that had a TPU greater than stated IHO Special Order standards (IHO, 2008). Refraction artifacts were addressed using Refraction Editor. Further editing was performed in Subset Editor. A visual and statistical inspection of the data was performed to serve as quality control. A 1-m bathymetric CUBE surface was computed, and the final surface was exported as an x,y,z ASCII file using the Base Surface to ASCII function. Process_Date: 2019 Source_Produced_Citation_Abbreviation: 2018_361_Cedar_Key_MBES_1m_WGS84_UTM17N.xyz 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_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: Nancy T. DeWitt 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: 21895565 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -81.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.6096 Ordinate_Resolution: 0.6096 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 Ellipsoid_Name: WGS_84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: World Geodetic System of 1984 Altitude_Resolution: 0.001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2018_361_Cedar_Key_MBES_1m_WGS84_UTM17N.xyz Entity_Type_Definition: ASCII text file containing the processed 1-m bathymetric grid x,y,z data in the WGS84 [G1762] realization (ellipsoid height). Entity_Type_Definition_Source: HYPACK Attribute: Attribute_Label: WGS84_UTM17N_X Attribute_Definition: WGS84 [G1762] UTM Zone 17N X-coordinate (easting) of sample point, in meters. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 290462.00 Range_Domain_Maximum: 302838.00 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: WGS84_UTM17N_Y Attribute_Definition: WGS84 [G1762] UTM Zone 17N Y-coordinate (northing) of sample point, in meters. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3204789.00 Range_Domain_Maximum: 3215870.00 Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: WGS84_Z Attribute_Definition: WGS84 [G1762] (ellipsoid height) of sample point, in meters. Attribute_Definition_Source: HYPACK Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -36.888 Range_Domain_Maximum: -31.001 Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: TPU Attribute_Definition: TPU = Total Propagated Uncertainty Attribute_Definition_Source: CARIS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.055 Range_Domain_Maximum: 0.250 Attribute_Measurement_Resolution: 0.001 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Resource_Description: 2018_361_Cedar_Key_MBES_1m_WGS84_UTM17N.xyz Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: ZIP Transfer_Size: 123.7 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9ZIZFSM/data/Cedar_Key_MBB_2018_xyz.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: ndewitt@usgs.gov Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Security_Information: Metadata_Security_Classification_System: none Metadata_Security_Classification: unclassified Metadata_Security_Handling_Description: None