PNG images of Edgetech SB-512i seismic-reflection data collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (PNG Format)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2017
Title:
PNG images of Edgetech SB-512i seismic-reflection data collected in 2014 by the U.S. Geological Survey offshore of Fire Island, NY (PNG Format)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7FF3QTQ
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://doi.org/10.5066/F7FF3QTQ
Online_Linkage: Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Jane F. Denny
Originator: William C. Schwab
Originator: Seth D. Ackerman
Originator: Wayne E. Baldwin
Originator: William W. Danforth
Originator: Eric Moore
Originator: Alexander R. Nichols
Originator: Charles R. Worley
Publication_Date: 2017
Title:
High-resolution geophysical and sample data collected offshore of Fire Island, NY in 2014, U.S. Geological Survey Field Activity 2014-009-FA
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7FF3QTQ
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/F7FF3QTQ
Online_Linkage:
Description:
Abstract:
The U.S. Geological Survey (USGS) conducted a geophysical and sampling survey in October 2014 that focused on a series of shoreface-attached ridges offshore of western Fire Island, NY. Seismic-reflection data, surficial grab samples and bottom photographs and video were collected along the lower shoreface and inner continental shelf. The purpose of this survey was to assess the impact of Hurricane Sandy on this coastal region. These data were compared to seismic-reflection and surficial sediment data collected by the USGS in the same area in 2011 to evaluate any post-storm changes in seabed morphology and modern sediment thickness on the inner continental shelf. For more information about the WHCMSC Field Activity, see: https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-009-FA.
Purpose:
PNG images of each seismic profile were generated in order to incorporate images of the seismic profiles into Geographic Information System (GIS) projects and data archives. These data represent approximately 745 km of chirp seismic-reflection data collected by the U.S. Geological Survey during cruise 2014-009-FA offshore of Fire Island, NY. Each profile image can be hotlinked to its corresponding trackline navigation contained within the Esri polyline shapefile '2014-009-FA_512i_Tracklines.shp'. Shotpoint index markers along the top of the PNG images correlate to the positions of 500 shot intervals within the Esri point shapefile '2014-009-FA_512i_500sht.shp' (available from the larger work).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20141020
Ending_Date: 20141026
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.313743
East_Bounding_Coordinate: -72.976662
North_Bounding_Coordinate: 40.679967
South_Bounding_Coordinate: 40.593182
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:14129f40-2c0f-4265-b787-eba0f7b6bd91
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: field activity number 2014-009-FA
Theme_Keyword: Edgetech 512i
Theme_Keyword: PNG
Theme_Keyword: seismic-reflection profiles
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: sub-bottom profiling
Theme_Keyword: seismic reflection methods
Theme_Keyword: image collections
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
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: 02543-1598
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: Browse_Graphic_File_Description:
Thumbnail image of chirp seismic-reflection profile data collected by the U.S. Geological Survey offshore of Fire Island, NY, 2014.
Browse_Graphic_File_Type: JPG
Cross_Reference:
Citation_Information:
Originator: Jane F. Denny
Originator: William C. Schwab
Originator: Wayne E. Baldwin
Originator: Emile Bergeron
Originator: Eric Moore
Publication_Date: 2015
Title:
High-resolution geophysical data collected offshore of Fire Island, New York in 2011, USGS Field Activity 2011-005-FA
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F75X2704
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/F75X2704
Online_Linkage:
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
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: http://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
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
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/
Cross_Reference:
Citation_Information:
Originator: W.C. Schwab
Originator: J.F. Denny
Originator: W.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
Other_Citation_Details:
This publication contains the backscatter image generated from data collected during WHCMSC field activity 2011-005-FA.
Online_Linkage: https://pubs.usgs.gov/of/2014/1203/
Cross_Reference:
Citation_Information:
Originator: W.C. Schwab
Originator: W.E. Baldwin
Originator: J.F. Denny
Publication_Date: 2014
Title:
Maps Showing the Change in Modern Sediment Thickness on the Inner Continental Shelf Offshore of Fire Island, New York, Between 1996-97 and 2011
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2014-1238
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2014/1238/
Cross_Reference:
Citation_Information:
Originator: William C. Schwab
Originator: Wayne E. Baldwin
Originator: Jane F. Denny
Originator: Cheryl J. Hapke
Originator: Paul T. Gayes
Originator: Jeffrey H. List
Originator: John C. Warner
Publication_Date: 2014
Title:
Modification of the Quaternary stratigraphic framework of the inner-continental shelf by Holocene marine transgression: An example offshore of Fire Island, New York
Edition: 1.0
Series_Information:
Series_Name: Marine Geology
Issue_Identification: Volume 355
Publication_Information:
Publication_Place: Amsterdam, Netherlands
Publisher: Elsevier B.V.
Online_Linkage: http://dx.doi.org/10.1016/j.margeo.2014.06.011
Cross_Reference:
Citation_Information:
Originator: Goff, J.A.
Originator: Flood, R.D.
Originator: Austin, J.A.
Originator: Schwab, W.C.
Originator: Christensen, B.
Originator: Browne, C.M.
Originator: Denny, J.F.
Originator: Baldwin, W.E.
Publication_Date: 2015
Title:
The impact of Hurricane Sandy on the shoreface and inner shelf of Fire Island, New York: Large bedform migration and limited erosion
Edition: 1.0
Series_Information:
Series_Name: Continental Shelf Research
Issue_Identification: V. 98, pp. 13-25
Publication_Information:
Publication_Place: Amsterdam, Netherlands
Publisher: Elsevier B.V.
Online_Linkage: http://dx.doi.org/10.1016/j.csr.2015.03.001
Cross_Reference:
Citation_Information:
Originator: Jane F. Denny
Originator: William W. Danforth
Originator: Stephen Couch
Originator: William C. Schwab
Publication_Date: 2015
Title:
Swath bathymetry collected offshore of Fire Island and western Long Island, New York in 2014, U.S. Geological Survey Field Activity 2014-072-FA
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7C827BX
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/F7C827BX
Online_Linkage:
Data_Quality_Information:
Logical_Consistency_Report:
All seismic-reflection data were collected with an Edgetech SB-512i chirp subbottom profiler. Processed seismic data were converted to PNG format for ease of seismic trace display. Quality control was conducted during processing.
Completeness_Report:
Sections of tracklines where navigation was recorded but no seismic data were logged are not included such as some turns and transits. There is a single image for every trackline. There is no line l67f1.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Although navigation is not stored in the images, positional accuracy is relevant to the accuracy of these data. Differential Global Positioning System (DGPS) navigation data were acquired with an Ashtech BR2G receiver and recorded with HYPACK (www.hypack.com). The DGPS antenna was located on the aft, port-side of the acquisition van. The SB-0512i was mounted on a catamaran sled and towed at the sea surface approximately 43 m astern of the M/V Scarlett Isabella. Fish depth below water line was 0.5 meters below catamaran floats. The GPS offset from sheave was x = 8.75 m; y = -43 m; z = 0. Navigation data were sent to SonarWiz (version 5) acquisition application and offsets were recorded in the acquisitions software, which logged the coordinates to individual trace headers SEG-Y and JSF format. Layback navigation was generated to account for towfish position. Positional accuracy is assumed to be ± 10 m.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title: 512i PNG image data
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20141020
Ending_Date: 20141026
Source_Currentness_Reference: ground condition during 20141020 - 20141026
Source_Citation_Abbreviation: SEG-Y and JSF 512i data
Source_Contribution:
Chirp seismic data were collected using an EdgeTech Geo-Star FSSB sub-bottom profiling system and an SB-0512i towfish (0.5-12 kHz), which was mounted on a catamaran and towed astern of the M/V Scarlett Isabella offshore of Fire Island, NY. Chesapeake Technology's SonarWiz (versions 5.00.0015 and 5.06.0058) seismic acquisition software was used to control the Geo-Star topside unit, digitally log trace data in the SEG-Y Rev. 1 format (IEEE floating point) and JSF format, and record GPS navigation coordinates to the SEG-Y trace headers (in arc seconds of Latitude and Longitude, multiplied by a scalar of 100). Data were acquired using a 250 ms shot rate, a 5-ms pulse length, and a 0.5 to 8 kHz frequency sweep. Recorded trace lengths were approximately 250 ms.
Process_Step:
Process_Description:
Scripts within SIOSEIS (version 2013.1.1) and Seismic Unix (version 4.2) were used to process SEG-Y data, create navigation files, and plot images. The processing flow and scripts used to produce navigation files including trackline shapefiles are summarized below and in the following processing steps.

1. SIOSEIS (version 2013.1.1) was used to read SEG-Y files, renumber shots starting from one, extract the envelope-detected trace, and write out new SEG-Y files. The original shot numbers, which were assigned by SonarWiz sequentially over the duration of an acquisition session despite SEG-Y file changes, are preserved in the raw SEG-Y data.

2. The SIOSEIS script Sio_medianstk applied a two-trace median stack (trim 50 percent of the values furthest from the median amplitude) to improve subsequent water bottom picking.

3. The SIOSEIS script siothresh_pltwbt was used to pick the water-bottom time from the median stacked SEG-Y files, apply a swell filter to smooth water-bottom time picks and shift the trace data by the difference between the smoothed and unsmoothed water bottom time before writing the shifted trace data to a new SEG-Y file.

4. The Seismic Unix script Plot512i_s creates a swell-filtered PNG image of the seismic profile using supsimage and ImageMagick (version 6.6.1). The resultant images are 29 inches high and contain an 80 millisecond (two-way travel time) window of data. Images show two-way travel time (seconds) along the y-axis (left margin) and distance along profile (in 500 shot intervals, corresponding to the point features in the shapefile 2014-009-FA_512i_500sht.shp) on the x-axis (along top of profile).

Process_Date: 2015
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2226
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
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: Pixel
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The PNG images can be hyperlinked to their shapefile location in ArcGIS. The images show two-way travel time (seconds) on the y-axis and distance along profile (in 500 shot intervals, corresponding to the point features in the shapefile 2014-009-FA_512i_500sht.shp available from the larger work) on the x-axis.
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: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Resource_Description:
USGS data release 2014-009-FA 512i PNG imagery from offshore of Fire Island, NY (2014-009-FA_512i_Images.zip). The zip file contains 94 PNG images named according to line and file number convention with an '_s' appended to note swell-filter processing. A browse graphic (2014-009-FA_512i_Images_browse.png) and Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata files (2014-009-FA_512i_Images_meta.xml) in four standard formats are also included (found in 2014-009-FA_512i_Images.zip).
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: PNG
Format_Version_Number: ImageMagick (version 6.6.1)
Format_Specification: Portable Network Graphic (PNG)
Format_Information_Content:
The WinZip (version 14.0) files contain seismic-reflection profile images of EdgeTech SB-512i collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center offshore of Fire Island, NY in 2014 and the associated metadata.
File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip
Transfer_Size: 57.5
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
Links to the data (zip files) and the main landing pages for the data
Fees: none
Technical_Prerequisites:
These data can be viewed with any PNG image viewing software. The zip files must be uncompressed in order to view the images.
Metadata_Reference_Information:
Metadata_Date: 20200908
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: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2311
Contact_Facsimile_Telephone: 508-457-2310
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

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