Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Publication_Date: 20170213 Title: Ground-Based Bathymetric Data Collected within Bellport Bay, New York, (2014) in XYZ ASCII Text File Format Geospatial_Data_Presentation_Form: Tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS 1034 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: St. Petersburg Coastal and Marine Science Center Online_Linkage: http://pubs.usgs.gov/ds/1034/ds1034_data_downloads.html Larger_Work_Citation: Citation_Information: Originator: Timothy R. Nelson Originator: Jennifer L. Miselis Originator: Cheryl J. Hapke Originator: Owen T. Brenner Originator: Rachel E. Henderson Originator: Billy J. Reynolds Originator: Kathleen E. Wilson Publication_Date: 20160801 Title: Bathymetry Data Collected in October 2014 From Fire Island, New York: The Wilderness Breach, Shoreface, and Bay Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS 1034 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.3133/ds1034 Description: Abstract: Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, conducted a bathymetric survey of Fire Island, New York, from October 5 to 10, 2014. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the wilderness breach, which formed in October 2012 during Hurricane Sandy, as part of the Hurricane Sandy Supplemental Project GS2-2B. During this study, bathymetry data were collected, using single-beam echo sounders and global positioning systems mounted to personal watercraft, along the Fire Island shoreface and within the wilderness breach, Fire Island Inlet, Narrow Bay, and Great South Bay east of Nicoll Bay. Additional bathymetry and elevation data were collected using backpack and wheel-mounted global positioning systems along the subaerial beach (foreshore and backshore), and flood shoals and shallow channels within the wilderness breach and adjacent shoreface. 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 October 5 to 10, 2014. The objectives of the data collection effort were to map the morphology of the wilderness breach and adjacent shoreface, Fire Island Inlet, Narrow Bay, and Great South Bay east of Nicoll Bay the shoreface as part of the USGS Hurricane Sandy Supplemental Project GS2-2B. This dataset, 201410_Ground_Based_XYZ_Bellport_Bay.zip, consists of elevation data collected from Bellport Bay, using a backpack GPS system, where personal watercrafts (PWC) were unable to survey. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20141005 Ending_Date: 20141010 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.8905260597491 East_Bounding_Coordinate: -72.8889465013118 North_Bounding_Coordinate: 40.7366074311069 South_Bounding_Coordinate: 40.734549401598 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: marine geology Theme_Keyword: bathymetry Theme_Keyword: mapping Theme_Keyword: backpack GPS Theme_Keyword: geophysical Theme_Keyword: breaches Theme_Keyword: shoals Theme_Keyword: barrier island 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: Hurricane Sandy Supplemental: Fire Island Theme_Keyword: Hurricane Sandy Theme_Keyword: 2014-325-FA Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: United States Place_Keyword: US Place_Keyword: New York Place_Keyword: NY Place_Keyword: Fire Island Place_Keyword: Fire Island National Seashore Place_Keyword: Otis Pike Fire Island High Dune Wilderness Place_Keyword: Bellport Bay Place_Keyword: Fire Island Inlet Place_Keyword: Great South Bay Place_Keyword: Narrow Bay Place_Keyword: Atlantic Ocean Place: Place_Keyword_Thesaurus: General Place_Keyword: the wilderness breach 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_Person_Primary: Contact_Person: Timothy R. Nelson Contact_Organization: U.S. Geological Survey 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 Cross_Reference: 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: 20160701 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://pubs.usgs.gov/ds/1007/ 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, setup procedures, and staff; therefore, the dataset is internally consistent. Methods are employed to maintain data collection consistency. During setup, 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 backpack collected elevations, the antenna height relative to the ground was measured for the surveyor in a walking stride position and accounted for during post-processing. For the wheel-mount collected elevations, the antenna height relative to the ground was 2 m and accounted for during post-processing. Logical_Consistency_Report: The U.S. Geological Survey St. Petersburg Coastal and Marine Science Center collected shallow water bathymetric data in the wilderness breach, Bellport Bay, Narrow Bay, Great South Bay east of Nicoll Bay, Fire Island Inlet, and the ocean shoreface within approximately 2.5 kilometers (km) of Wilderness Breach. Backpack-collected GPS was collected over subaerial and shallow flood shoals. Wheel-mounted GPS was collected on the subaerial beach. This zip archive contains the post-processed backpack and wheel-mounted (ground based) GPS data (x, y, z) from October 2014 that were acquired during a single field survey. Completeness_Report: This is a complete, post-processed x,y,z bathymetric data point file acquired with a backpack GPS system within Bellport Bay, New York. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The GPS antenna and receiver acquisition configuration used at the base station was duplicated on the survey mount (rover). The base receiver and the rover receiver recorded their positions concurrently at 10 Hz recording intervals throughout the survey. All processed measurements were referenced to the base station coordinates. All static base station GPS sessions were submitted for processing to the Online Positioning User Service (OPUS), which was created by the National Oceanic and Atmospheric Administration/National Geodetic Survey (NOAA/NGS). OPUS results provided an error measurement for each daily solution with a horizontal accuracy estimated as 0.007 m root mean squared (RMS). The combined horizontal error is assumed to be at most half of the vertical offset. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 0.068 m Horizontal_Positional_Accuracy_Explanation: Static GPS data were processed using NOAA/NGS OPUS software and kinematic GPS data were processed with GrafNav v8.50 software by Novatel. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The GPS antenna and receiver acquisition configuration used at the base station was duplicated on the survey mount (rover). The base receiver and the rover receiver recorded their positions concurrently at 10 Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates. OPUS results provided an error measurement for each daily solution. Applying these error measurements, the vertical accuracy of the base station was estimated to be 0.007 m root mean squared (RMS). The kinematic (rover) trajectories were processed using GrafNav v8.50 software by Novatel, Inc. Occurrences where a backpack and(or) wheel-mounted GPS trackline crossed a line it previously surveyed were evaluated to determine vertical error. The combined vertical error from base station coordinate solutions and rover trajectories was 0.125 m. Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 0.125 m Vertical_Positional_Accuracy_Explanation: Static GPS data were processed using NOAA/NGS OPUS software and kinematic GPS data were processed with GrafNav v8.50 software by Novatel. Lineage: Process_Step: Process_Description: GPS Acquisition: Horizontal and vertical positioning of each vessel and backpack was were collected determined using a base-rover configuration. Data were recorded at 10 Hertz (Hz) using Ashtech ProFlex™ 500 Global Navigation Satellite System (GNSS) receivers with Thales choke ring antennas. Three stationary base stations (REST, VC, and U374) were occupied during the surveys. The stationary base at published NGS benchmark U374 (Permanent Identification number (PID#) KU0206) was equipped with an Inmarsat Broadband Global Area Network (BGAN) satellite uplink system for remote monitoring of the base station. U374 consisted of an Ashtech Proflex 500 GNSS receiver and an Ashtech choke ring antenna with a vertical offset of 1.24 meters (m). GPS data acquired by the PWCs, backpack, wheel-mount, and the REST and VC base stations were downloaded at the end of each survey day. A small segment of the U374 data was downloaded via the BGAN network nightly to ensure the system was operating properly. Reference station coordinates were verified with Continuously Operating Reference Stations (CORS) stations using OPUS, (http://www.ngs.noaa.gov/OPUS/). OPUS computed reference positions had a vertical error of 0.007 m and horizontal errors of 0.8 cm and 0.6 cm for East-West and North-South, respectively. 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. S 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: Backpack GPS Acquisition: Elevation data were collected from shallow flood shoals and channels, using a SECO GPS backpack containing an Ashtech Z-Xtreme receiver with Ashtech Marine antennas attached to a pole extending above the head of the surveyor. Positions were recorded at 10 Hz. The elevation of the antenna relative to the ground was measured for the surveyor in a walking stride position (2.112 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 St. Petersburg Coastal and Marine Science Center Contact_Person: Owen T. Brenner Contact_Position: Geologist 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: 727-502-8085 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: obrenner@usgs.gov Process_Step: Process_Description: Ground-Based Differentially Corrected Navigation Processing: GPS data points 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 systems were processed to the concurrent GPS session data at the base stations. The horizontal and vertical coordinates of the ground-based data 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. S 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 GPS Processing: Using ArcGIS, position and elevation of the ground based data were analyzed for instances when the surveyor was either sitting, removing the backpack, being transported between shoals on a personal watercraft. 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 St. Petersburg Coastal and Marine Science Center Contact_Person: Owen T. Brenner Contact_Position: Geologist 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: 727-502-8085 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: obrenner@usgs.gov Process_Step: Process_Description: Ground-Based Uncertainty Calculation: Backpack GPS elevation errors were calculated by computing the vertical differences at crossings occurring at least 1 minute apart. Using Matlab, the calculated RMS error was 12.5 cm. Elevation differences between the ground-based data points and single-beam data points indicate the backpack elevations were 5 cm higher than elevations recorded using PWCs. Given the high degree of uncertainty arising from the backpack surveyor striding over a subaqueous shoal surface, the ground-based data were adjusted to the PWC elevation at the crossings. The adjusted positions, elevation, and date of sampling were saved as an ASCII file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 201410_Ground_Based_XYZ.csv Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Timothy R. Nelson Contact_Position: Geologist 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: 727-502-8098 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: trnelson@usgs.gov Process_Step: Process_Description: Extract Bellport Bay XYZ: The adjusted backpack data points were imported into ArcGIS using the “create feature class from XY table” tool in ArcCatalog. A polygon was then created surrounding the data points within Bellport Bay. The polygon vertices were converted to points using the “feature vertices to points” tool, “add XY coordinates” tool, and exported as an ASCII file using the “export feature attribute to ASCII” tool. This polygon ASCII file was subsequently imported into Matlab. Ground-based data points within or on this polygon were then extracted and saved as an ASCII file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 201410_Ground_Based_XYZ_Bellport_Bay.csv Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Timothy R. Nelson Contact_Position: Geologist 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: 727-502-8098 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: trnelson@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: 2648 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: 0.9996 Longitude_of_Central_Meridian: -75 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 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 of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum 1988 Altitude_Resolution: 0.01 m Altitude_Distance_Units: meter Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 201410_BPWGround_Based_XYZ_Bellport_Bay.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: 678120 Range_Domain_Maximum: 678257 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: Northing_m Attribute_Definition: NAD83 UTM y-axis coordinate (Zone 18) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4511432 Range_Domain_Maximum: 4511659 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: Elev_NAVD88_m Attribute_Definition: z-value (elevation) in NAVD88 Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.927 Range_Domain_Maximum: -0.131 Attribute_Units_of_Measure: Meter Attribute: Attribute_Label: Date Attribute_Definition: Date and Time of Sample Collection Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20141006 Range_Domain_Maximum: 20141006 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: Bellport Bay ground-based GPS point data for Fire Island, NY, created from data collected between October 5, 2014 and October 10, 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 1034 Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm 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: 0.0202 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/1034/downloads/201410_BPWGround_Based_XYZ_Bellport_Bay.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20160615 Metadata_Review_Date: 20170105 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Timothy R. Nelson Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8098 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: trnelson@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998