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)

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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