FI_SONAR_5M: 5-meter per pixel acoustic backscatter mosaic collected by the U.S. Geological Survey offshore of Fire Island, NY in 2011 (UTM Zone 18N, WGS 84, GeoTIFF)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2014
Title:
FI_SONAR_5M: 5-meter per pixel acoustic backscatter mosaic collected by the U.S. Geological Survey offshore of Fire Island, NY in 2011 (UTM Zone 18N, WGS 84, GeoTIFF)
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2014-1203
Publication_Information:
Publication_Place:
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2014/1203/GIS/sonar/fi_sonar.zip>
Online_Linkage:
<https://pubs.usgs.gov/of/2014/1203/html/ofr2014-1203-data_catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: William C. Schwab
Originator: Jane F. Denny
Originator: Wayne E. Baldwin
Publication_Date: 2014
Title:
Maps Showing Bathymetry and Modern Sediment Thickness on the Inner- Continental Shelf Offshore of Fire Island, New York: pre-Hurricane Sandy
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2014-1203
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2014/1203/>
Online_Linkage: <https://dx.doi.org/2014/1203>
Description:
Abstract:
The U.S. Geological Survey (USGS) mapped approximately 336 square kilometers of the lower shoreface and inner-continental shelf offshore of Fire Island, New York in 2011 using interferometric sonar and high-resolution chirp seismic-reflection systems. This report presents maps of bathymetry, acoustic backscatter, the coastal plain unconformity, the Holocene marine transgressive surface and modern sediment thickness. These spatial data support research on the Quaternary evolution of the Fire Island coastal system and provide baseline information for research on coastal processes along southern Long Island.

More information about this field activity and the data collected can be found at the Field Activity Web Page (<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-005-FA>)

Purpose:
This GeoTIFF represents approximately 2800 line kilometers of acoustic backscatter data collected in 2011. These data were collected using an interferometric sonar (Systems Engineering and Assessment Ltd. (SEA) SWATHplus-M (234 kHz)) by the U.S. Geological Survey during USGS survey 2011-005-FA. Acoustic backscatter data were used to define the surficial sediment distribution on the inner-continental shelf offshore of Fire Island, New York to help assess environmental change caused by natural processes and human activities.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20110520
Ending_Date: 20110608
Currentness_Reference:
ground condition during 20110520 - 20110523, 20110525 - 20110601; 20110604 - 20110608.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.280265
East_Bounding_Coordinate: -72.738660
North_Bounding_Coordinate: 40.759320
South_Bounding_Coordinate: 40.535635
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: USGS
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: CMGP
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: WHCMSC
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: Marine Geology
Theme_Keyword: field activity number 2011-005-FA
Theme_Keyword: interferometric backscatter
Theme_Keyword: acoustic backscatter
Theme_Keyword: interferometry
Theme_Keyword: SEA SWATHplus-M (234 kHz)
Theme_Keyword: M/V Scarlett Isabella
Theme_Keyword: mosaic
Theme_Keyword: gray scale
Theme_Keyword: GeoTIFF
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: New York
Place_Keyword: Fire Island
Place_Keyword: Fire Island National Seashore
Access_Constraints: none
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: <https://pubs.usgs.gov/of/2014/1203/GIS/sonar/fi_sonar5m_sm.jpg>
Browse_Graphic_File_Description:
Gray-scale image of interferometric sonar mosaic collected offshore of Fire Island, NY
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: William C. Schwab
Originator: Wayne E. Baldwin
Originator: Cheryl J. Hapke
Originator: Erika E. Lentz
Originator: Paul T. Gayes
Originator: Jane F. Denny
Originator: Jeffrey H. List
Originator: John C. Warner
Publication_Date: 2013
Title:
Geologic Evidence for Onshore Sediment Transport from the Inner Continental Shelf: Fire Island, New York
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Journal of Coastal Research
Issue_Identification: Volume 29, Issue 3, pp. 526-544.
Publication_Information:
Publication_Place: Florida, USA
Publisher: Coastal Education and Research Foundation, Inc.
Online_Linkage: <https://dx.doi.org/10.2112/JCOASTRES-D-12-00160.1>
Cross_Reference:
Citation_Information:
Originator: David S. Foster
Originator: Ann B. Swift
Originator: William C. Schwab
Publication_Date: 1999
Title:
Stratigraphic Framework Maps of the nearshore area of southern Long Island from Fire Island to Montauk Point, NY
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 99-559
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <https://pubs.usgs.gov/of/1999/of99-559/>
Cross_Reference:
Citation_Information:
Originator: William C. Schwab
Originator: E. Robert Thieler
Originator: Jane F. Denny
Originator: William W. Danforth
Originator: Jenna C. Hill
Publication_Date: 2000
Title:
Seafloor sediment distribution off southern Long Island, New York
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 00-243
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <https://pubs.usgs.gov/of/2000/of00-243/>

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
There are no attributes associated with a GeoTIFF image. Image pixel values contain acoustic reflectivity values normalized to a 24-bit data range. Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values). The background color is set to 0-0-0 and can be turned off without removing data values.
Logical_Consistency_Report:
This image represents interferometric acoustic backscatter data collected offshore of Fire Island, New York. Gaps generally occur along-track and between adjacent lines where complete coverage of the sea floor was not possible due to narrow swath widths. This primarily occurs in the shallowest regions of the survey.
Completeness_Report:
Line 1 - 51, 61 - 64, 68 - 87, and 93 - 109 were used to generate the GeoTIFF image. Lines 52-60, 65 - 67, and 89 - 92 are tie lines collected orthogonal to the shoreline. Lines l27f5, l28f1, l28f2, l29f4, and l61f1 were not included in the mosaic, as the raw data files were not recorded. Tie lines were not incorporated in the GeoTIFF image.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Navigation was acquired with Differential Global Positioning System and Wide Area Augmentation System (DGPS+WAAS), which is accurate to + or - 1 to 2 meters, horizontally. The forward, or primary, Coda Octopus F180R Attitude and Positioning system antenna was used to acquire DGPS data and transmit via a network connection to the SEA SWATHplus data acquisition software. The F180R Attitude and Positioning system uses 2 L1 antennas for position and heading and an Inertial Measurement Unit (IMU) for motion sensing (heave, pitch, roll and yaw). The F180R IMU is mounted directly above the SEA SWATHplus-M transducers on the sidemount. The F180R antennas are mounted at the top of the sidemount offset in a forward/aft configuration. The offsets were applied within the SWATHplus and Coda Octopus F180R acquisition software.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title: Raw Interferometric Data
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20110520
Ending_Date: 20110608
Source_Currentness_Reference:
ground condition during 20110520 - 20110523; 20110525 - 20110601; 20110604 - 20110608
Source_Citation_Abbreviation: none
Source_Contribution:
Survey: Survey lines were run at an average speed of 5 knots. Lines 1 through 27 were run at a 75-m line spacing to achieve full coverage of the seafloor in a priority area of interest in the nearshore, in water depths less than 15 meters. Lines 28 through 109 were run at a 150-m line spacing, with the exception of tie lines (lines 52 through 60, 65 through 67, 89 through 92), which were run at approximately a 2-km line spacing.

Sonar: Swath-bathymetric and acoustic-backscatter data were acquired with a SEA, Ltd., SWATHplus-M interferometric sonar operating at a frequency of 234 kHz and a variable range (increased or decreased manually depending on water depth). The system was operated with a transmit power: 80 percent, 4096 samples per channel, and a variable range (increased or decreased depending on water depth). The SWATHplus-M was mounted on the port side of the M/V Scarlett Isabella during survey operations. A Coda Octopus F180R Attitude and Positioning system recorded ship motion (heave, pitch, roll, and yaw). These data were transmitted via network connection to the SWATHplus-M acquisition software. The Octopus F180R Inertial Measurement Unit (IMU) was mounted directly above the SEA SWATHplus-M transducers, to minimize lever arm offsets that can lead to positioning errors. The F180R uses two L1 antennas for position and heading accuracy. The antennas are mounted on a rigid horizontal pole, positioned at the top of the sidemount, with a horizontal separation of 1 meter and are offset from the IMU in a forward/aft configuration. The forward offset of the primary antenna from the IMU is 0.5 meters, with no port/starboard offset.

Sound Velocity Profiles: 135 sound velocity profiles were acquired during survey operations at roughly 1 to 3 hour intervals using an Odim MVP30 motion vessel profiler. The MVP30 failed during survey operations. Sound velocity profiles were only collected during JD141 through 143 (lines 1 through 27).

While much effort was devoted to cleaning the data and minimizing survey artifacts, some artifacts may still be seen in the final GeoTIFF including an along track artifact at nadir (the ship track). These artifacts are especially noticeable in the shallow nearshore region of the survey.

More information about this field activity and the data collected can be found at the Field Activity Web Page (<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-005-FA>)

Process_Step:
Process_Description:
Raw (SXR) : Raw SXR bathymetry and acoustic backscatter data were acquired with the SEA SWATHplus acquisition software (version 3.07). The SWATHplus acquisition software applies the pitch, roll, heave, yaw and heading data supplied by the Coda Octopus F180R IMU, to compensate for any ship motion.

Jane F. Denny performed this and all subsequent process steps.

Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2311
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Process_Step:
Process_Description:
Import SXR to Chesapeake Technologies SonarWiz: SWATHplus raw acoustic backscatter (sonar) files (SXR) were imported into Chesapeake Technology Inc.'s SonarWiz software (version 5.06.0029). The sonar data were processed to correct for towfish altitude (i.e. proper bottom tracking of the sea floor), and slant-range and beam pattern distortions inherent in the sonar data. Beam pattern distortions were minimized using an empirical gain normalization function. A composite mosaic was generated within SonarWiz, and exported as a 24-bit GeoTIFF image file, with no data values explicitly set to 0, 0, 0.
Process_Date: 2014
Process_Step:
Process_Description:
Import to ArcGIS 9.3.1: The 24-bit GeoTIFF was added to an ArcGIS 9.3.1 map project. For best display, the image symbology was set to stretched, display background value 0, minimum-maximum stretch of 40 (low) to 120 (high).
Process_Date: 2014

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 4764
Column_Count: 9056
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: 0.999600
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: 5.000000
Ordinate_Resolution: 5.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
There are no attributes associated with a GeoTIFF image. Image pixel values contain acoustic reflectivity values normalized to a 24-bit data range. Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values). The background color is set to 0-0-0 and can be turned off without removing data values.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2311
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Resource_Description: Downloadable Data
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
Format_Version_Number: 1.0
Format_Specification: GeoTIFF Format (Georeferenced TIFF Image)
Format_Information_Content:
This WinZip (version 14.0) file contains a GeoTIFF image of interferometric acoustic backscatter data collected offshore of Fire Island, NY. This also includes a TIFF World File (tfw) and associated metadata.
File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip
Transfer_Size: 10.6 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://pubs.usgs.gov/of/2014/1203/GIS/sonar/fi_sonar.zip>
Network_Resource_Name:
<https://pubs.usgs.gov/of/2014/1203/html/ofr2014-1203-data_catalog.html>
Access_Instructions: Data can be downloaded via the Internet
Fees: none
Custom_Order_Process: none
Technical_Prerequisites:
This zip file contains a GeoTIFF image with an accompanying world file. To utilize these data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. A free spatial data viewer, ArcGIS Explorer, capable of displaying the data is available from Esri at www.esri.com. The zip file also contains associated metadata.

Metadata_Reference_Information:
Metadata_Date: 20141017
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jane F. Denny
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 394 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2311
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com>
Profile_Name: ESRI Metadata Profile

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