Fire Island Shoreface Bathymetric Data collected with Personal Watercraft and Backpack along Fire Island, New York (2014) as a GeoTIFF

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20170213
Title:
Fire Island Shoreface Bathymetric Data collected with Personal Watercraft and Backpack along Fire Island, New York (2014) as a GeoTIFF
Geospatial_Data_Presentation_Form: Raster 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: https://pubs.usgs.gov/ds/1034/ds1034_data.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: 20170213
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, Shoreface_DEM.zip, consists of single-beam elevation and ground-based data collected with personal watercraft (PWC) and backpack global positioning system (GPS) along the Fire Island shoreface.
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: -72.9247815166
East_Bounding_Coordinate: -72.8612510666
North_Bounding_Coordinate: 40.7319208836
South_Bounding_Coordinate: 40.6990968178
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:cfa31546-2f5d-41be-be07-c94f03eb0264
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geomorphology
Theme_Keyword: marine geology
Theme_Keyword: geophysics
Theme_Keyword: sea-floor characteristics
Theme_Keyword: bathymetry
Theme_Keyword: single-beam echo sounder
Theme_Keyword: digital elevation models
Theme_Keyword: image mosaics
Theme_Keyword: GPS measurement
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: mapping
Theme_Keyword: backpack GPS
Theme_Keyword: single-beam
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
Place_Keyword: United States of America
Place_Keyword: New York
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: None
Place_Keyword: Wilderness Breach
Temporal:
Temporal_Keyword_Thesaurus: None
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: 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/ds1034
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. During setup, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey platform and mount. All the critical measurements are recorded manually and digitally entered into their respective programs. For single-beam soundings, distance between the transducer and GPS antenna were measured for each personal watercraft and accounted for during post-processing. 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 meters 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 the wilderness breach. Single-beam soundings were collected in the wilderness breach (and associated flood and ebb tidal shoals), Fire Island Inlet, Narrow Bay, and the eastern end of Great South Bay. Backpack-collected GPS was collected over subaerial and shallow flood shoals. Wheel-mounted GPS was collected on the subaerial beach. This zip archive contains a digital elevation model (DEM) acquired during a single field survey, in October 2014.
Completeness_Report:
This is a complete, DEM derived from post-processed x,y,z bathymetric data points acquired with an acoustic single-beam transducer, backpack, and wheel-mounted GPS systems on the Fire Island shoreface.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The raster uncertainty was determined by withholding 10% of the x,y,z bathymetric data points used to create the raster. The raster was then sampled at the withheld positions and a root mean square (RMS) error was calculated from the differences between sample and interpolated bathymetry. The horizontal error is assumed to be half the vertical error.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.077 m
Horizontal_Positional_Accuracy_Explanation: Raster uncertainty was determined using ArcGIS and Matlab.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The raster uncertainty was determined by withholding 10% of the x,y,z bathymetric data points used to create the raster. The raster was then sampled at the withheld positions and a root mean square (RMS) error was calculated from the differences between sample and interpolated bathymetry.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 0.153 m
Vertical_Positional_Accuracy_Explanation: Raster uncertainty was determined using ArcGIS and Matlab.
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:
Single-Beam Sounding Acquisition: The single-beam bathymetric data were collected on two Yamaha (2010 and 2013) VX Deluxe personal watercraft (PWC). HYPACK version 2013 was used for positioning and navigation during the survey. Depth soundings were recorded at 10 Hz using an Odom Ecotrac CV-100 Digital Hydrographic Echo Sounder system with 200 kiloHertz (kHz) transducers with 4-degree (vessel 1) and 9-degree (vessel 2) transducers. Soundings were merged into a raw data file (.raw) and a sounding file (.bin) in HYPACK. Each file was named according to transect number and coordinated universal time (UTC). Water column sound velocity measurements were collected periodically throughout the survey, using a SonTek CastAway conductivity, temperature, and depth (CTD) sensor. Data were processed using SonTek CastAway CTD software version 1.5.
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: 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:
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 hertz (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:
Wheel-Mounted GPS Acquisition: A wheel-mounted GPS system containing an Ashtech Z-Xtreme receiver with Ashtech Marine antennas was used to record elevations and positions at 10 Hz. The elevation of the antenna relative to the ground was fixed at 2 meters. The system collected data along the approximate mean high water (MHW) line, along pre-defined transects, and additional data on the subaerial beach.
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:
Single-Beam Differentially Corrected Navigation Processing: Positions and elevations associated with each sounding were post-processed using differential corrections derived from the base/rover setup. Applying the reference station coordinates, GPS data acquired from the rover were processed to the concurrent GPS session data at the base station- using GrafNav version 8.5 software (Waypoint Product Group). The horizontal and vertical coordinates were recorded in the World Geodetic System of 1984 (WGS84) reference frame and exported as an ASCII file for each vessel and each survey day.
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 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, or tilted the wheel horizontally. 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:
Single-Beam Processing: Soundings were merged with processed DGPS data and sound velocity profiles using Matlab to visually analyze single-beam soundings and correct for errors such as elevation outliers and dropouts associated with wave breaking in the surf zone. When this is suspected, a corrected seafloor elevation was manually digitized by analyzing the complete waveform signal recorded by the Odom within the .bin data file. The soundings were then corrected for the speed of sound associated with the mean water temperature and salinity. A moving average filter was then applied to the soundings in order to reduce instrument noise and noise associated with the pitch and roll of the PWC. The soundings were referenced to the height of the GPS antenna and subsequently to the WGS84 ellipsoid.
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: 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:
Single-Beam Datum transformation: NOAA’s VDatum v3.3 was used to transform single beam data points (x, y, and z data) from their acquisition datum (WGS84) to the North American Datum of 1983 (NAD83) reference frame and the North American Vertical Datum of 1988 (NAVD88) elevation using the National Geodetic Survey (NGS) geoid model of 2012A (GEOID12A). For conversion from the WGS84 ellipsoid to NAVD88 there is a total of 5.4 cm of uncertainty in the transformation (http://vdatum.noaa.gov/docs/est_uncertainties.html).
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: 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:
Single-Beam Error Analysis: The accuracy of the single-beam soundings was evaluated by identifying locations where survey track lines either crossed or were within a horizontal distance of 0.25 m of each other. Any track line associated with a crossing that had an elevation differing by greater than 0.6 m, compared to crossing lines, was removed. Evaluation of the remaining track line crossings indicated there was an overall mean difference of 3.8 cm (based on 210 crossings) and (root mean square) RMS error of 16.5 cm (based on 696 crossings). Applying the square root of the sum of the datum conversion uncertainty (5.4 cm) and the sounding uncertainty (16.5 cm) results in a combined vertical error of 17.4 cm. Horizontal uncertainty is assumed to be at most half of the vertical uncertainty (8.7 cm).
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: 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:
Ground-Based Uncertainty Calculation: Backpack and wheel 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 and the tilting of the wheel-mount, 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:
Export Transects: Using Matlab, partial lines (the result of restarting the line in the middle of a transect) were subsequently merged with similar segments to create one seamless line. When repeats were present, only a single line was retained. Vessel 1 elevations were adjusted to those of vessel 2 for consistency (3.8 cm). The data were then combined into a single ASCII file consisting of position, elevation, line number, vessel number, and time of sampling.
Process_Date: 2015
Source_Produced_Citation_Abbreviation: 201410_PWC_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 Single-Beam Shoreface XYZ: The adjusted single-beam data points were imported into ArcGIS using the ”Create Feature Class from XY Table” tool in ArcCatalog. A polygon was then created surrounding data points within the Fire Island shoreface in ArcGIS. 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. PWC data points within or on this polygon were then extracted and saved as an ASCII file.
Process_Date: 2015
Source_Produced_Citation_Abbreviation: 201410_Single_Beam_XYZ_Shoreface.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 Ground-Based Shoreface XYZ: The adjusted ground-based data points were imported into ArcGIS using the “create feature class from xy yable” tool in ArcCatalog. A polygon was then created surrounding data points near the shoreline. 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_Shoreface.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:
Create Raster: The Fire Island shoreface single-beam and ground-based x, y, and z data points were imported into ArcGIS using the “Create Feature Class From XY Table” tool in ArcCatalog. The dataset was then subsampled using the “Subset Features” and 10% of each data was removed to provide an estimate of the bathymetry uncertainty. The remaining 90% of each dataset was used to create a triangulated irregular network (TIN) using the “Create TIN” tool. The TIN was subsequently converted into a Raster file using the “TIN to Raster” tool with a cell size of 50 meters. The Raster was exported as an ASCII file using the “ASCII to Raster” tool.
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: 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:
Remove Extrapolated Cells: The Raster ASCII file was imported into Matlab and any interpolated grid cells more than 2 cell sizes (100 m) away from a Fire Island shoreface data point was set to "not a number" (NaN) in Matlab. The raster data were then exported as an ArcGIS ASCII file from Matlab and imported using the "ASCII to Raster" tool.
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: 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:
Evaluate Raster Uncertainty: The raster was sampled at the positions of the 10% removed data using the "Extract Values to Points" and a .csv file was saved from each data table for the single-beam and ground-based data points. Using Matlab, the sampled data were compared to the subset data and the root mean square differences were calculated. The vertical RMS error was found to be 15.3 cm.
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: 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:
Convert Raster Format: In ArcCatalog, a raster dataset was created using the “Create Raster Dataset” tool with a .tif image format, 64 bit pixel type. The Fire Island shoreface raster was then imported into this dataset using the “Mosaic” tool.
Process_Date: 2015
Source_Produced_Citation_Abbreviation: 201410_Shoreface_DEM.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:
Keywords section of metadata optimized by correcting variations of theme keyword thesauri and updating/adding keywords.
Process_Date: 20180529
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Arnell S. Forde
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
Contact_Voice_Telephone: 727-502-8000
Contact_Electronic_Mail_Address: aforde@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: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 70
Column_Count: 105
Vertical_Count: 1
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
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: 201410_Shoreface_DEM.tif
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: GeoTIFF
File_Decompression_Technique: ZIP
Transfer_Size: 0.0219
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20210922
Metadata_Review_Date: 20170106
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

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