U.S. Geological Survey
2009
Seismic-Reflection Profiles in SEG-Y Format From Western Rhode Island Sound (1980)
profile
Open-File Report
2009-1002
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr20091002
https://pubs.usgs.gov/of/2009/1002/html/catalog.html
https://pubs.usgs.gov/of/2009/1002/data/seismics/segy/
https://pubs.usgs.gov/of/2009/1002/html/wris_prof.html
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/
During 1980, a Uniboom seismic-reflection survey was conducted by the U.S. Geological Survey (USGS) in western Rhode Island Sound aboard the Research Vessel NeechoThe cruise consisted fo 2 legs and had a total of 8 survey days. Data from this survey were recorded in analog form and archived at the USGS. As a result of 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. In order to scan the lines, some of the paper records were cut and scanned in sections. These sections are labeled with lower-case letters and differ from the names of lines in the logbook. Some SEG-Y files were further divided in order for each file to contain continuous data collected at the same ship speed; these line segments have been labeled _1, _2, or _3 after the section label. Navigation data were converted from LORAN-C time delays to latitudes and longitudes that are available in ESRI shapefile format and as eastings and northings in space-delimited text format.
This data set contains seismic-reflection data in SEG-Y format from the seismic-reflection data set collected aboard the R/V NEECHO during a 1980 geophysical cruise in western Rhode Island Sound. The seismic data 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=1980-016-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.
19800709
19801002
ground condition of two separate time spans: 19800709 to 19800717 and 19800929 to 19801002.
None planned
-71.569208
-71.130113
41.485329
41.191382
USGS Metadata Identifier
USGS:80b95dce-6722-4676-b449-fc9b52c72d69
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Science Center
WHSC
R/V Neecho
high-resolution seismic
geophysical data
Uniboom seismic reflection
SEG-Y
OFR 2009-1002
Open-File Report 2009-1002
Cruise NECH80-1
Field activity number 80016
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
Rhode Island Sound
Rhode Island
U.S. East Coast
North America
United States
Atlantic Ocean
North Atlantic Ocean
northeast United States
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/2009/1002/data/seismics/segy/n80_1lines.gif
Browse image of seismic-line locations from cruise NECH80-1.
GIF
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
S.W. Needell
C.J. O'Hara
H.J. Knebel
1983
Maps showing geology and shallow structure of western Rhode Island Sound, Rhode Island
map
Miscellaneous Field Studies Map
MF-1537
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/mf/1983/mf-1537/
Michael W. Norris and Alan K. Faichney
2002
SEG Y Rev.1 Data Exchange Format1
document
Tulsa, OK
Society of Exploration Geophysicists
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 RV NEECHO cruise NECH80-1 is included in this data set.
All navigation was done by LORAN-C and was manually recorded. The cruise used the Group Repetition Interval 9960 Northeast U.S. chain and recorded time delays from Caribou, Maine (W) and Carolina Beach, N.C. (Y) slave transmitters. Absolute accuracy is 185 to 463 m based on http://www.navcen.uscg.gov/loran/handbook/h-book.htm (see Chapter III) - this link no longer appears valid.
USGS (assumed)
unknown
Information unavailable from original metadata.
paper records - assumed
19800709
19801003
ground condition
Original seismic-reflection profiles
Information unavailable from original metadata.
Original analog seismic records of cruise NECH80-1 were obtained using a towed EG&G Uniboom system 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.
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, n80_102Ac.tif signifies the cruise as R/V NEECHO in 1980 (NECH80-1), line 02A, section c, and TIFF format. Capitalized letters are part of the original line number, as recorded in the logbook and on the seismic line.
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, _2, or _3 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/2009/1002/html/wris_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). Quality control was performed by viewing the SEG-Y files using SeisVU SEG-Y File Viewer (1.0.0.1).
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
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. Fixed the date format in the time period of content. Online link was added to a cross-reference and fixed an online link in another cross-reference. 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 is for descriptive purposes only and does not imply endorsement by the U.S. Government.
SEG-Y
WinZipped SEG-Y files ranging from 15-108 Mb in size
zip archive
https://pubs.usgs.gov/of/2009/1002/data/seismics/segy/
https://pubs.usgs.gov/of/2009/1002/html/catalog.html
https://cmgds.marine.usgs.gov/data/1980_016_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