Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20160707 Title: Wilderness Breach Ground Based XYZ Point Bathymetry Data Collected in June 2014 from Fire Island, New York Geospatial_Data_Presentation_Form: Tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS 1007 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: St. Petersburg Coastal and Marine Science Center Online_Linkage: http://pubs.usgs.gov/ds/1007/downloads/201406_Ground_Based_XYZ.zip Larger_Work_Citation: Citation_Information: Originator: Timothy R. Nelson Originator: Jennifer L. Miselis Originator: Cheryl J. Hapke Originator: Kathleen E. Wilson Originator: Rachel E. Henderson Originator: Owen T. Brenner Originator: Billy J. Reynolds Originator: Mark E. Hansen Publication_Date: 20160707 Title: Coastal Bathymetry Data Collected in June 2014 from Fire Island, New York: the Wilderness Breach and Shoreface Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS 1007 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.3133/ds1007 Description: Abstract: Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, collected bathymetric data along the upper shoreface and within the wilderness breach at Fire Island, New York, in June 2014. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the shoreface along Fire Island and model the evolution of the wilderness breach as a part of the Hurricane Sandy Supplemental Project GS2-2B.During this study, bathymetry was collected with single-beam echo sounders and global positioning systems, mounted to personal watercraft, along the Fire Island shoreface and within the wilderness breach. Additional bathymetry was collected using backpack global positioning systems along the flood shoals and shallow channels within the wilderness breach. Purpose: To determine the change Hurricane Sandy caused in the shoreface morphology and breach evolution at Fire Island, New York, USA, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a bathymetric survey of Fire Island from June 10-20, 2014. The objectives of the data collection effort were to map the morphology of the shoreface and the wilderness breach as part of the USGS Hurricane Sandy Supplemental Project GS2-2B. This dataset, 201406_Ground_Based_XYZ.zip, consists of elevation data collected with a backpack GPS system from subaerial and shallow flood shoals. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20140610 Ending_Date: 20140620 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.906476 East_Bounding_Coordinate: -72.889222 North_Bounding_Coordinate: 40.739707 South_Bounding_Coordinate: 40.720330 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:353e15b7-5096-46b8-87d8-e95be5de4c0e Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: marine geology Theme_Keyword: bathymetry Theme_Keyword: interferometry Theme_Keyword: single-beam echo sounder Theme_Keyword: U.S. Geological Survey Theme_Keyword: Hurricane Sandy Supplemental: Fire Island Theme_Keyword: Hurricane Sandy 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: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: elevation Theme_Keyword: oceans Place: Place_Keyword_Thesaurus: General Place_Keyword: Fire Island Place_Keyword: Fire Island National Seashore Place_Keyword: Long Island Place_Keyword: New York Place_Keyword: United States Temporal: Temporal_Keyword_Thesaurus: General Temporal_Keyword: 2014 Access_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. Use_Constraints: These data should not be used for navigational purposes. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Timothy R. Nelson Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701-4846 Country: USA Contact_Voice_Telephone: 727-502-8098 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: trnelson@usgs.gov 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 field survey using identical equipment, set-ups, and staff; therefore, the dataset is internally consistent. Methods are employed to maintain data collection consistency aboard the platform. During mobilization, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey mount. All the critical measurements are recorded manually and digitally entered into their respective programs. For ground-based measurements, elevation between the ground and antenna was measured for each surveyor in a walking stride and accounted for during post-processing. For the base stations, the Ashtech ProFlex 500 system has a long static horizontal accuracy of 0.3 centimeters (cm) and 0.6 cm vertical accuracy. For the rovers, the Ashtech Z-Xtreme post-processed kinematic horizontal instrument accuracy is 1 cm, and vertical accuracy is 2 cm. Logical_Consistency_Report: The U.S. Geological Survey St. Petersburg Coastal and Marine Science Center collected shallow water bathymetric data of the shoreface and the wilderness breach on Fire Island, New York, in June 2014. Completeness_Report: This zip archive contains post-processed horizontal position and vertical elevation point data (x,y,z) acquired with a backpack mounted GPS along the shoreface of Fire Island and the wilderness breach. This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read online Data Series and the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record their positions concurrently at 10Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates. All static base station GPS sessions were submitted for processing to the National Oceanographic and Atmospheric Administration (NOAA) and National Geodetic Survey (NGS) On-Line Positioning User Service (OPUS) software. OPUS results provide an error measurement for each daily solution with a horizontal accuracy estimated as 0.7 cm root mean squared (RMS). Rover kinematic (rover) GPS data was processed with GrafNav v8.50 software by Novatel. The combined horizontal error for the rover is assumed to be at most half of the calculated vertical uncertainty. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 12.5 cm Horizontal_Positional_Accuracy_Explanation: Static GPS data was processed using NOAA/NGS OPUS software and kinematic GPS data was processed with GrafNav v8.50 software by Novatel. Uncertainty was determined using Matlab R2015b. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record the positions concurrently at 10Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates. OPUS results provide an error measurement for each daily solution. Applying these error measurements, the vertical accuracy of the base station is estimated to be 0.7 cm root mean squared (RMS).The kinematic (rover) trajectories were processed using GrafNav v8.50 software by Novatel, Inc. Ground-based GPS elevation errors were calculated by computing the RMS vertical elevation differences at crossings that occurred at least 1 minute apart. The combined vertical uncertainty from base station coordinate solutions and rover trajectories is 24.9 cm. Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 24.9 cm Vertical_Positional_Accuracy_Explanation: Static GPS data was processed using NOAA/NGS OPUS software and kinematic GPS data was processed with GrafNav v8.50 software by Novatel. Trackline crossing elevation uncertainty were determined using Matlab R2015b. Lineage: Process_Step: Process_Description: GPS Acquisition: GPS base stations were erected at benchmarks REST (near the town of Robins Rest) and U374 (NGS benchmark Permanent Identification number (PID#) KU0206) located on Fire Island. Base stations were equipped with Ashtech ProFlex 500 Global Navigation Satellite System (GNSS) receivers. The survey backpack (rover) was equipped with an Ashtech Z-Xtreme(TM) receiver. The base and rover receivers recorded their positions concurrently at 10 Hertz (Hz) throughout the survey. Reference station coordinates were verified with Continuously Operating Reference Station (CORS) sites using the Online Positioning User Service (OPUS), available at http://www.ngs.noaa.gov/OPUS/). U374 used reference stations ZNY1, NYRH, CTDA, while REST used stations NYCI, NYRH, and MOR6. OPUS computed both reference stations had horizontal errors of 0.4 cm and vertical errors of 0.2 cm. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Mark E. Hansen Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. S City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8036 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: mhansen@usgs.gov Process_Step: Process_Description: Ground Based Mapping: Elevation data were collected using an Ashtech Z-Xtreme GPS receiver mounted in a SECO backpack using Ashtech Marine antennas attached to a pole that extended above the head of the surveyor. The relative elevation of the antenna to the ground was measured for each surveyor in a walking-stride position that varied between 1.67 and 1.7 m. The surveyors did not follow a pre-defined path but collected data over as much of the subaerial and shallow shoals as possible during low-tide. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Owen T. Brenner Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8085 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: obrenner@usgs.gov Process_Step: Process_Description: Ground Based Differentially Corrected Navigation Processing: Locations associated with backpack position were post-processed using a differential correction derived from the base/rover setup. The base station coordinates were imported into GrafNav version 8.5 (Waypoint Product Group) and the GPS data from the backpack and wheel-mounted surveys were processed to the concurrent GPS session data at the base stations. The horizontal and vertical coordinates of the backpack and wheel-mounted data points were saved in NAD83 and NAVD88 and exported as ASCII files. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Billy J. Reynolds Contact_Position: Engineering Technician Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8067 Contact_Facsimile_Telephone: 727-502-8181 Contact_Electronic_Mail_Address: breynolds@usgs.gov Process_Step: Process_Description: Ground-Based Data Processing: Using ArcGIS, erroneous ground-based horizontal and vertical positions, such as when the backpack was removed and when the surveyor was transported between shoals, were removed. Once all extraneous data points were removed, the remaining data were saved as an ASCII file. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Owen T. Brenner Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8085 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: obrenner@usgs.gov Process_Step: Process_Description: Ground-Based Error Analysis: Using Matlab R2015b Ground-based GPS elevation errors were calculated by computing the vertical differences at crossings that occurred at least 1 minute apart. An RMS error of 24.9 cm was calculated based on 210 crossings. Elevation differences between the ground-based and single-beam data points (487 samples within 50 cm) indicated the ground-based elevations were 6 cm higher than elevations recorded using PWCs. Given the high degree of uncertainty arising from of the backpack surveyor striding over a subaqueous surface, the ground-based data were adjusted to the single-beam elevation at the crossings. The adjusted positions, elevation, and time of sampling were saved as an ASCII file. Process_Date: 2015 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Mark E. Hansen Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 600 4th St. South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502- 8036 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: mhansen@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: 37,270 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: row and column Coordinate_Representation: Abscissa_Resolution: 1.000000 Ordinate_Resolution: 1.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum 1983 Ellipsoid_Name: Geodetic Reference System 80 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: 0.001 m Altitude_Distance_Units: meter Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 201406_Ground_Based_XYZ.csv Entity_Type_Definition: Comma delimited xyz file Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Easting_m Attribute_Definition: NAD83 UTM x-axis coordinate (Zone 18) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 676815 Range_Domain_Maximum: 678223 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: Northing_m Attribute_Definition: NAD83 UTM y-axis coordinate (Zone 18N) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4509853 Range_Domain_Maximum: 4511972 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: elevation Attribute_Definition: z-value (elevation) in NAVD88 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.016 Range_Domain_Maximum: 0.572 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: Date Attribute_Definition: Date of Sample Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 16 June 2014 Range_Domain_Maximum: 19 June 2014 Overview_Description: Entity_and_Attribute_Overview: Comma delimited xyz file containing UTM X, UTM Y locations and corresponding Z elevation value, all in meters. Entity_and_Attribute_Detail_Citation: Coastal bathymetry point data for Fire Island, N.Y., created from data collected between June 10, 2014, and June 20, 2014. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St Petersburg Coastal and Marine Science Center, St. Petersburg, FL Contact_Person: Timothy R. Nelson 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: 727-502-8098 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: trnelson@usgs.gov Resource_Description: U.S. Geological Survey DS 1007 Distribution_Liability: This digital publication was prepared by an agency of the United States Government. Although these data have been 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: 0.296 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/1007/downloads/201406_Ground_Based_XYZ.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20210922 Metadata_Review_Date: 20160129 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Kathleen E. Wilson Contact_Position: Researcher Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: 727-502-8099 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: kwilson@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998