U.S. Geological Survey
2009
Seismic-Reflection Profiles in SEG-Y Format From Southern Rhode Island Sound
profile
Open-File Report
2009-1003
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr20091003
https://pubs.usgs.gov/of/2009/1003/html/catalog.html
https://pubs.usgs.gov/of/2009/1003/data/seismics/sris/segy/
https://pubs.usgs.gov/of/2009/1003/html/sris_prof.html
K.Y. McMullen
L.J. Poppe
N.K. Soderberg
2009
Digital Seismic-Reflection Data from Eastern Rhode Island Sound and Vicinity, 1975-1980
1.0
Open-File Report
2009-1003
Reston, VA
U.S. Geological Survey
2 DVD-ROMs
https://pubs.usgs.gov/of/2009/1003/
During 1980, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey utilizing Uniboom seismics in southern Rhode Island Sound aboard the Research Vessel Asterias. This cruise totalled 3 survey days. Data from this survey were recorded in analog form and archived at the USGS. Due to recent interest in the geology of Rhode Island Sound and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from this cruise were scanned and converted to TIFF images and SEG-Y data files. Navigation data were converted from LORAN-C time delays to latitudes and longitudes, which are available in ESRI shapefile format and as eastings and northings in space-delimited text format.
This data set contains the seismic-reflection data in SEG-Y format collected aboard the R/V Asterias during a 1980 geophysical cruise in southern Rhode Island Sound. It is a digital version of the seismic data collected on the cruise and can be used in seismic interpretation software. The seismic data can be used to provide useful information about the framework geology in this region. This metadata describes the SEG-Y data as a whole.
For more information on the seismic surveys see https://cmgds.marine.usgs.gov/fan_info.php?fan=1980-012-FA
These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications.
19800610
19800612
ground condition
None planned
-71.215370
-70.637272
41.502251
41.233566
USGS Metadata Identifier
USGS:1cddccb2-45bd-4e49-b6af-3f09b54657b5
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Science Center
WHSC
R/V Asterias
high-resolution seismic
geophysical data
Uniboom seismic reflection
Open-File Report 2009-1003
OFR 2009-1003
SEG-Y
Cruise AST-80-6B
Field activity number 80012
ISO 19115 Topic Category
geoscientificInformation
oceans
Data Categories for Marine Planning
distributions
substrate
Marine Realms Information Bank (MRIB) Keywords
seismic reflection profiling
marine geophysics
USGS Thesaurus
seismic reflection methods
sub-bottom profiling
marine geophysics
None
Southern Rhode Island Sound
Rhode Island
U.S. East Coast
North America
United States
Atlantic Ocean
North Atlantic Ocean
northeast United States
Massachusetts
Cox Ledge
Muskeget Channel
Nantucket Sound
None
Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of this dataset.
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2277
(508) 457-2310
kmcmullen@usgs.gov
https://pubs.usgs.gov/of/2009/1003/data/seismics/sris/segy/a80_6lines.gif
Browse image of seismic-line locations from cruise AST-80-6B.
GIF
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
C.J. O'Hara
R.N. Oldale
1980
Maps showing geology and shallow structure of eastern Rhode Island Sound and Vineyard Sound, Massachusetts
1.0
map
Miscellaneous Field Studies Map
MF-1186
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/mf/1980/mf-1186/
K.Y. McMullen
L.J. Poppe
N.K. Soderberg
2009
Digital Seismic-Reflection Data from Western Rhode Island Sound, 1980
1.0
Open-File Report
2009-1002
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/of/2009/1002/
K.M. Barry
D.A. Cavers
C.W. Kneale
1975
Report on recommended standards for digital tape formats
Geophysics
40, no. 02, p. 344-352
http://www.seg.org/documents/10161/77915/seg_y_rev1.pdf
The data were edited and processed in a consistent manner.
All available SEG-Y data along seismic acquisition lines collected during the R/V Asterias cruise AST-80-6B is included in this data set.
USGS (assumed)
unknown
Information unavailable from original metadata.
paper records - assumed
19800610
19800612
ground condition
Original seismic-reflection profiles
Information unavailable from original metadata.
Original seismic records of cruise AST-80-6B were obtained using a towed EG&G Uniboom system, towed 15 m astern of the vessel, with a half-second fire rate. The signal was amplified and filtered to a 400- to 4000-Hz bandpass. The seismic data have 1- to 2-m resolution. Seismic data were printed on EPC recorders at a quarter-second sweep rate. The ship speed averaged 5 knots. Shipboard systems include: EG&G Uniboom Catamaran with mounted transducer, EG&G Trigger-Capacitor Bank, EPC Seismic Recorder (4100 series), Teledyne Exploration Seismic Amplifier (Model 300), Del Norte Hydrophone Streamer (30 element), Krohn-Hite Band Pass Filter, Northstar 6000 Loran C Receiver and Repeater.
1980
Original seismic records were scanned at 300 dpi, 8-bit grayscale on an Ideal Contex Crystal TX 40 scanner using Ideal ScanOS version 2.5.4 software and saved as TIFFs, after being roughly rotated and cropped. Some seismic lines were too long to scan at once and were cut into sections, other lines were collected in sections. These sections are noted in the file names with lower-case letters after the line number. For instance, a80_607a_1.tif signifies the cruise as R/V Asterias in 1980 (AST-80-6B), line 7, section a, SEG-Y segment _1, and TIFF format.
2008
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2277
(508) 457-2310
kmcmullen@usgs.gov
TIFFs were then opened in Adobe Photoshop CS2 and saved as 200 dpi grayscale TIFFs.
2008
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2277
(508) 457-2310
kmcmullen@usgs.gov
Grayscale TIFFs were further processed in Adobe Photoshop CS2 in order to aid in creating the SEG-Y files. These TIFF images were rotated so they were nearly perfectly horizontal, cropped to start and end shots with known positions, and resampled using bicubic filtering, such that each horizontal pixel of the image corresponds to a trace and each vertical pixel corresponds to a time sample, based on a 0.5 second fire rate and 0.25 sec sweep rate (250 ms) and an assumed 0.08 sample rate. For instance, a 30-minute image is 3600 shots/pixels wide (30*60/0.5) and 3125 pixels high (250 ms/0.08 ms). Seismic-reflection profiles that had noted changes in ship speed or places where recording stopped for belt changes were split into segments, so each file was obtained at roughly the same speed. These segments are labeled with _1 or _2 after the section, thus the file names differ slightly from the line names as used in the logbook. Since TIFF images were clipped in the process of making SEG-Y files, users are encouraged to view the TIFF images available in this report (https://pubs.usgs.gov/of/2009/1003/html/sris_prof.html) in order to see field notes related to data acquisition and weather conditions, which were written directly on the paper records.
2008
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 458-8700 x2277
(508) 457-2310
kmcmullen@usgs.gov
Rotated, cropped, and resampled grayscale TIFFs were run through tif2segy, a Unix shell script written by Andrew MacRae (Saint Mary's University, Nova Scotia) and used to convert TIFFs to SEG-Y format. Tif2segy requires two other programs to run successfully: Seismic Unix (http://www.cwp.mines.edu/cwpcodes) and Netpbm tools (http://netpbm.sourceforge.net). The default sample interval within the Tif2segy script was edited and set to 80 microseconds using the Unix text editor, vi. The ASCII header was also edited to reflect the current processor and processing date. Quality control was performed by viewing the SEG-Y files using SeisVU SEG-Y File Viewer (1.0.0.1).
2009
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2277
(508) 457-2310
kmcmullen@usgs.gov
Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. An online link was added to a cross-reference. Fixed an online link to a cross-reference. The source information was incomplete and had to be modified to meet the standard. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
20170213
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
Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.
20170124
U.S. Geological Survey
Alan O. Allwardt
Contractor -- Information Specialist
Mailing and Physical
2885 Mission Street
Santa Cruz
CA
95060
831-460-7551
831-427-4748
aallwardt@usgs.gov
Additional information regarding file availability through GeoMapApp was added to the metadata. This included an additional distribution link pointing to CMGDS.
20171201
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
Crossref DOI link was added as the first link in the metadata.
20191118
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
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
Lawrence Poppe
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2314
(508) 457-2310
lpoppe@usgs.gov
Downloadable Data: WinZipped SEG-Y seismic data files.
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 if for descriptive purposes only and does not imply endorsement by the U.S. Government.
SEG-Y
WinZipped SEG-Y files ranging from 23-143 Mb in size
zip archive
https://pubs.usgs.gov/of/2009/1003/data/seismics/sris/segy/
https://pubs.usgs.gov/of/2009/1003/html/catalog.html
https://cmgds.marine.usgs.gov/data/1980_012_FA/
Data are downloadable via the World Wide Web (WWW). The third online link gives access to the folder containing the individual SEG-Y files on the USGS CMGDS (Coastal and Marine Geoscience Data System) uncompressed. These are the files made availabe through GeoMapApp.
DVD-ROM
4.75
Gbytes
UDF
None
The WinZip 9.0 file contains a SEG-Y formatted seismic-reflection profile. The user must be able to uncompress the zip file and have software capable of reading SEG-Y standard files.
2009
20211116
U.S. Geological Survey
Katherine McMullen
Sediment Lab Technician
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
(508) 548-8700 x2277
(508) 457-2310
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
None