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: http://pubs.usgs.gov/of/2009/1002/html/catalog.html Online_Linkage: http://pubs.usgs.gov/of/2009/1002/data/seismics/segy/ Online_Linkage: http://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: http://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: http://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 (http://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: http://pubs.usgs.gov/of/2009/1002/html/catalog.html Network_Resource_Name: http://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