U.S. Geological Survey
2017
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)
1.0
raster digital data
data release
DOI:10.5066/F7FF3QTQ
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F7FF3QTQ
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/data/seismics/2014-009-FA_512i_Images.zip
Jane F. Denny
William C. Schwab
Seth D. Ackerman
Wayne E. Baldwin
William W. Danforth
Eric Moore
Alexander R. Nichols
Charles R. Worley
2017
High-resolution geophysical and sample data collected offshore of Fire Island, NY in 2014, U.S. Geological Survey Field Activity 2014-009-FA
1.0
data release
DOI:10.5066/F7FF3QTQ
Reston, VA
U.S. Geological Survey
https://doi.org/10.5066/F7FF3QTQ
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/
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.
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).
20141020
20141026
ground condition
None planned.
-73.313743
-72.976662
40.679967
40.593182
USGS Metadata Identifier
USGS:14129f40-2c0f-4265-b787-eba0f7b6bd91
None
U.S. Geological Survey
USGS
Woods Hole Coastal and Marine Science Center
WHCMSC
Coastal and Marine Geology Program
CMGP
field activity number 2014-009-FA
Edgetech 512i
PNG
seismic-reflection profiles
USGS Thesaurus
marine geology
sub-bottom profiling
seismic reflection methods
image collections
ISO 19115 Topic Category
oceans
geoscientificInformation
None
North America
United States
Atlantic Ocean
New York
Fire Island
Fire Island National Seashore
none
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.
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x 2311
508-457-2310
jdenny@usgs.gov
https://cmgds.marineusgs.gov/data/field-activity-data/2014-009-FA/data/seismics/2014-009-FA_512i_Images_browse.jpg
Thumbnail image of chirp seismic-reflection profile data collected by the U.S. Geological Survey offshore of Fire Island, NY, 2014.
JPG
Jane F. Denny
William C. Schwab
Wayne E. Baldwin
Emile Bergeron
Eric Moore
2015
High-resolution geophysical data collected offshore of Fire Island, New York in 2011, USGS Field Activity 2011-005-FA
1.0
data release
DOI:10.5066/F75X2704
Reston, VA
U.S. Geological Survey
https://doi.org/10.5066/F75X2704
https://cmgds.marine.usgs.gov/data/field-activity-data/2011-005-FA/
William C. Schwab
Wayne E. Baldwin
Cheryl J. Hapke
Erika E. Lentz
Paul T. Gayes
Jane F. Denny
Jeffrey H. List
John C. Warner
2013
Geologic Evidence for Onshore Sediment Transport from the Inner Continental Shelf: Fire Island, New York
1.0
Journal of Coastal Research
Volume 29, Issue 3, pp. 526-544.
Florida, USA
Coastal Education and Research Foundation, Inc.
http://dx.doi.org/10.2112/JCOASTRES-D-12-00160.1
David S. Foster
Ann B. Swift
William C. Schwab
1999
Stratigraphic Framework Maps of the nearshore area of southern Long Island from Fire Island to Montauk Point, NY
1.0
Open-File Report
99-559
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/of/1999/of99-559/
William C. Schwab
E. Robert Thieler
Jane F. Denny
William W. Danforth
Jenna C. Hill
2000
Seafloor sediment distribution off southern Long Island, New York
1.0
Open-File Report
00-243
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/of/2000/of00-243/
W.C. Schwab
J.F. Denny
W.E. Baldwin
2014
Maps Showing Bathymetry and Modern Sediment Thickness on the Inner Continental Shelf Offshore of Fire Island, New York, Pre-Hurricane Sandy
1.0
Open-File Report
2014-1203
Reston, VA
U.S. Geological Survey
This publication contains the backscatter image generated from data collected during WHCMSC field activity 2011-005-FA.
https://pubs.usgs.gov/of/2014/1203/
W.C. Schwab
W.E. Baldwin
J.F. Denny
2014
Maps Showing the Change in Modern Sediment Thickness on the Inner Continental Shelf Offshore of Fire Island, New York, Between 1996-97 and 2011
1.0
Open-File Report
2014-1238
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/of/2014/1238/
William C. Schwab
Wayne E. Baldwin
Jane F. Denny
Cheryl J. Hapke
Paul T. Gayes
Jeffrey H. List
John C. Warner
2014
Modification of the Quaternary stratigraphic framework of the inner-continental shelf by Holocene marine transgression: An example offshore of Fire Island, New York
1.0
Marine Geology
Volume 355
Amsterdam, Netherlands
Elsevier B.V.
http://dx.doi.org/10.1016/j.margeo.2014.06.011
Goff, J.A.
Flood, R.D.
Austin, J.A.
Schwab, W.C.
Christensen, B.
Browne, C.M.
Denny, J.F.
Baldwin, W.E.
2015
The impact of Hurricane Sandy on the shoreface and inner shelf of Fire Island, New York: Large bedform migration and limited erosion
1.0
Continental Shelf Research
V. 98, pp. 13-25
Amsterdam, Netherlands
Elsevier B.V.
http://dx.doi.org/10.1016/j.csr.2015.03.001
Jane F. Denny
William W. Danforth
Stephen Couch
William C. Schwab
2015
Swath bathymetry collected offshore of Fire Island and western Long Island, New York in 2014, U.S. Geological Survey Field Activity 2014-072-FA
1.0
data release
DOI:10.5066/F7C827BX
Reston, VA
U.S. Geological Survey
https://doi.org/10.5066/F7C827BX
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-072-FA/
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.
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.
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.
U.S. Geological Survey
Unpublished Material
512i PNG image data
raster digital data
disc
20141020
20141026
ground condition during 20141020 - 20141026
SEG-Y and JSF 512i data
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.
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).
>
2015
Wayne Baldwin
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
(508) 548-8700 x2226
(508) 457-2310
wbaldwin@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Raster
Pixel
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.
U.S. Geological Survey
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x 2311
508-457-2310
jdenny@usgs.gov
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).
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.
PNG
ImageMagick (version 6.6.1)
Portable Network Graphic (PNG)
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.
Use WinZip, 7zip, Peazip or pkUnzip
57.5
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/data/seismics/2014-009-FA_512i_Images.zip
https://doi.org/10.5066/F7FF3QTQ
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-009-FA/
Links to the data (zip files) and the main landing pages for the data
none
These data can be viewed with any PNG image viewing software. The zip files must be uncompressed in order to view the images.
20200908
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x 2311
508-457-2310
jdenny@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time