N80_1SEGY.TXT: Seismic-Reflection Profiles in SEG-Y Format From Western Rhode Island Sound

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2009
Title:
N80_1SEGY.TXT: Seismic-Reflection Profiles in SEG-Y Format From Western Rhode Island Sound
Geospatial_Data_Presentation_Form: profile
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1002
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2009/1002/html/catalog.html>
Online_Linkage: <https://pubs.usgs.gov/of/2009/1002/data/seismics/segy/>
Online_Linkage: <https://pubs.usgs.gov/of/2009/1002/html/wris_prof.html>
Larger_Work_Citation:
Citation_Information:
Originator: K.Y. McMullen
Originator: L.J. Poppe
Originator: N.K. Soderberg
Publication_Date: 2009
Title:
Digital Seismic-Reflection Data from Western Rhode Island Sound, 1980
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1002
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2009/1002/>
Description:
Abstract:
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.
Purpose:
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.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19800709, 19800929
Ending_Date: 19800717, 19801002
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.569208
East_Bounding_Coordinate: -71.130113
North_Bounding_Coordinate: 41.485329
South_Bounding_Coordinate: 41.191382
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: R/V Neecho
Theme_Keyword: high-resolution seismic
Theme_Keyword: geophysical data
Theme_Keyword: Uniboom seismic reflection
Theme_Keyword: SEG-Y
Theme_Keyword: OFR 2009-1002
Theme_Keyword: Open-File Report 2009-1002
Theme_Keyword: Cruise NECH80-1
Theme_Keyword: Field activity number 80016
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme_Keyword: oceans and coastal
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Rhode Island Sound
Place_Keyword: Rhode Island
Place_Keyword: U.S. East Coast
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: North Atlantic Ocean
Place_Keyword: northeast United States
Access_Constraints: None
Use_Constraints:
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.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2009/1002/data/seismics/segy/n80_1lines.gif>
Browse_Graphic_File_Description: Browse image of seismic-line locations from cruise NECH80-1.
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Cross_Reference:
Citation_Information:
Originator: S.W. Needell
Originator: C.J. O'Hara
Originator: H.J. Knebel
Publication_Date: 1983
Title:
Maps showing geology and shallow structure of western Rhode Island Sound, Rhode Island
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Miscellaneous Field Studies Map
Issue_Identification: MF-1537
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Cross_Reference:
Citation_Information:
Originator: Michael W. Norris and Alan K. Faichney
Publication_Date: 2002
Title: SEG Y Rev.1 Data Exchange Format1
Geospatial_Data_Presentation_Form: document
Publication_Information:
Publication_Place: Tulsa, OK
Publisher: Society of Exploration Geophysicists
Online_Linkage:
<http://www.seg.org/SEGportalWEBproject/prod/SEG-Publications/Pub-Technical-Standards/Documents/seg_y_rev1.pdf>
Data_Quality_Information:
Attribute_Accuracy:
Logical_Consistency_Report: The data were edited and processed in a consistent manner.
Completeness_Report:
All available SEG-Y data along seismic acquisition lines collected during the RV NEECHO cruise NECH80-1 is included in this data set.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
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).
Lineage:
Source_Information:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19800709
Ending_Date: 19801003
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Original seismic-reflection profiles
Process_Step:
Process_Description:
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.
Process_Date: 1980
Process_Step:
Process_Description:
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.
Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Process_Step:
Process_Description:
TIFFs were then opened in Adobe Photoshop CS2 and saved as 200 dpi grayscale TIFFs.
Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Process_Step:
Process_Description:
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.
Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 458-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Process_Step:
Process_Description:
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).
Process_Date: 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Lawrence Poppe
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: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2314
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: lpoppe@usgs.gov
Resource_Description: Downloadable Data: WinZipped SEG-Y seismic data files.
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: zip
Format_Information_Content: WinZipped sSEG-Y files ranging from 15-108 Mb in size
File_Decompression_Technique: zip archive
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://pubs.usgs.gov/of/2009/1002/html/catalog.html>
Network_Resource_Name: <https://pubs.usgs.gov/of/2009/1002/data/seismics/segy/>
Access_Instructions: Data are downloadable via the World Wide Web (WWW)
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
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.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Metadata_Reference_Information:
Metadata_Date: 20090513
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Katherine McMullen
Contact_Position: Sediment Lab Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@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_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Wed May 13 14:11:52 2009