Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2011 Title: 10cct02_SeismicTrackline.shp - Survey lines along which EdgeTech SB-512i chirp seismic-reflection data were collected by the U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center offshore of the Gulf Islands, MS, 2010 (ESRI polyline shapefile) Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2010-1178 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2010/1178/GIS_catalog/Tracklines/10cct02_seismic_trks.zip Larger_Work_Citation: Citation_Information: Originator: Elizabeth A. Pendleton Originator: Wayne E. Baldwin Originator: William W. Danforth Originator: Nancy T. Dewitt Originator: Arnell S. Forde Originator: David S. Foster Originator: Kyle W. Kelso Originator: William R. Pfeiffer Originator: Aaron M. Turecek Originator: James G. Flocks Originator: David C. Twichell Publication_Date: 2011 Title: Geophysical Data from offshore of the Gulf Islands National Seashore, Cat Island to Western Horn Island, Mississippi Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2010-1178 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2010/1178/ Description: Abstract: In 2010, the U.S. Geological Survey in Woods Hole, MA and St. Petersburg, FL, in partnership with the U.S. Army Corps of Engineers, Mobile District conducted geologic mapping to characterize the seafloor and shallow subsurface stratigraphy offshore of the Gulf Islands of Mississippi. The mapping was carried out during two cruises in March, 2010 on the R/V Tommy Munro of Biloxi, MS. Data were acquired with the following equipment: an SEA Ltd SwathPlus interferometric sonar (both 234 kHz and 468 kHz systems), a Klein 3000 and a Klein 3900 dual frequency sidescan-sonar, and an Edgetech 512i chirp subbottom profiling system. The long-term goal of this mapping effort is to produce high-quality, high-resolution geologic maps and geophysical interpretations that can be utilized to identify sand resources within the region and better understand the Holocene evolution and anticipate future changes in this coastal system. More information on the field work can be accessed from the Woods Hole Coastal and Marine Science Center Field Activity webpage or the St. Petersburg Coastal and Marine Geology InfoBank . Purpose: This dataset contains trackline navigation for approximately 492 km of EdgeTech SB-512i chirp seismic-reflection data collected by the U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center in 2010. The seismic-reflection data are used to define sub-surface stratigraphy offshore of the Gulf Islands in Mississippi, and these navigation data can help spatially correlate the seismic-reflection profiles with other data in the GIS. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100319 Ending_Date: 20100329 Currentness_Reference: Data were not collected on 20100321-20100326 due to weather conditions, crew changes, or survey location. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.035786 East_Bounding_Coordinate: -88.637281 North_Bounding_Coordinate: 30.215336 South_Bounding_Coordinate: 30.126883 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: seismic profile Theme_Keyword: seismic reflection Theme_Keyword: navigation tracklines Theme_Keyword: seismic navigation Theme_Keyword: chirp Theme_Keyword: EdgeTech Theme_Keyword: SB-512i Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: R/V Tommy Munro Theme_Keyword: St. Petersburg field activity serial number 10cct02 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: oceans and coastal Theme_Keyword: oceans and estuaries Theme_Keyword: location Place: Place_Keyword_Thesaurus: General Place_Keyword: Mississippi Place_Keyword: Gulf Islands Place_Keyword: North Central Gulf Coast Place_Keyword: United States Place_Keyword: West Ship Island Place_Keyword: East Ship Island Place_Keyword: Horn Island Place_Keyword: Dog Key Pass Place_Keyword: Camille Cut Place_Keyword: Petit Bois Island Place_Keyword: Gulfport Ship Channel Place_Keyword: Gulf of Mexico Place_Keyword: Cat Island Access_Constraints: None Use_Constraints: The 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David C. Twichell Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700x2266 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: dtwichell@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2011/1178/GIS_catalog/Tracklines/10cct02_seistrks.png Browse_Graphic_File_Description: St. Petersburg Coastal and Marine Science Center EdgeTech SB-512i trackline navigation offshore of the Gulf Islands, MS Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows XP Professional x64 Edition Version 2003 Service Pack 2; ESRI ArcCatalog 9.3 Build 1770 Cross_Reference: Citation_Information: Originator: John Stockwell Publication_Date: 2008 Title: CWP/SU: Seismic Uni*x Publication_Information: Publication_Place: Golden, CO Publisher: Center for Wave Phenomena - Colorado School of Mines Online_Linkage: http://www.cwp.mines.edu/cwpcodes/title_page.html Cross_Reference: Citation_Information: Originator: Paul Henkart Publication_Date: 2007 Title: SIOSEIS Publication_Information: Publication_Place: LaJolla, CA Publisher: Scripps Institution of Oceanography, University of California - San Diego Online_Linkage: http://sioseis.ucsd.edu/title_page.html Cross_Reference: Citation_Information: Originator: Michael W. Norris Originator: Alan K. Faichney Publication_Date: 2002 Title: SEGY Rev.1 Data Exchange Format1 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: Attribute_Accuracy_Report: All attributes were checked in a consistent manner. Logical_Consistency_Report: Any spurious data points were removed during processing. For each seismic trackline there is one seismic-profile image that is hyperlinked by the field 'ImageName'. No duplicates exist. Completeness_Report: Only the portions of this seismic-reflection survey that lie in the western survey area (west of Petit Bois Island, MS) are included in this shapefile. Additional seismic-data acquired east of this study area will be included in a future report. Sections of tracklines where navigation was recorded but no seismic data were logged are not included. Sections of tracklines where navigation was recorded but no seismic data were logged are not included. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The SB-512i was towed astern of the R/V Tommy Munro approximately 3 m below the surface. Differential Global Positioning System (DGPS) navigation coordinates were obtained from the Coda Octopus F190 motion reference unit (equipped with Omnistar HP) antenna and EdgeTech Discover acquisition software logged the navigation coordinates in arc-seconds to individual trace headers in the Society of Exploration Geophysicists Y (SEG-Y), revision 1 format (Norris and Faichney, 2002). Horizontal offsets between the navigation antenna and the towfish were not accounted for during acquisition, nor was the vertical draft of the towfish beneath the sea-surface. Navigational uncertainty is increased due to fish motion behind the vessel, which is caused by sea state and vessel speed induced changes in the angle and scope of the tow cable. Resulting positional accuracy is assumed to be better than + or - 10 m. Lineage: Source_Information: Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100319 Ending_Date: 20100329 Source_Currentness_Reference: Data were not collected on 20100321-20100326 due to weather conditions, crew changes, or survey location. Source_Contribution: High-resolution chirp seismic-reflection profiles were collected using an EdgeTech Geo-Star Full Spectrum Sub-bottom (FSSB) system and SB-512i towfish (0.5-12 kHz) (EdgeTech, 2008). EdgeTech Discover acquisition software was used to control the Geo-Star topside unit and digitally log trace data in the Society of Exploration Geophysicists Y (SEG-Y), revision 1, standard format (Norris and Faichney, 2002). The SB-512i towfish was towed astern of the vessel approximately 3 m below the water surface. Differential Global Positioning System (DGPS) navigation coordinates were obtained from the Coda Octopus F190 motion reference unit (equipped with Omnistar HP) antenna and logged to the SEG-Y trace headers. Data were acquired using a 0.5 to 8 kHz frequency sweep, a 5 millisecond pulse length, a 0.25 second shot rate, a 46 microsecond sample interval, and a 100 millisecond record length. A total of 492 km of seismic data from this survey are included in this shapefile. Process_Step: Process_Description: An executable C-shell script called on SIOSEIS (version 10.2.25) to: 1) read the SEG-Y data processed by Arnell (Harrison) Forde of the St. Petersburg Coastal and Marine Science Center and create shot gathers containing two consecutive traces; 2) create a stacked trace from the two trace gathers while maintaining the navigation coordinates from the header of the first trace in each; and 3) write the stacked traces to new SEG-Y files. This stacking flow ensured that the resulting traces were spaced greater than 0.5 m apart along the trackline, which is a prerequisite for the traces to be loaded into GeoGraphix SeisVision (version R5000) for digital interpretation. Process_Date: 201010 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: An executable C-shell script called on Seismic Unix (version 4.1) to read the stacked SEG-Y files, write a Seismic Unix file, and extract SEG-Y trace header information, including shot number, longitude, latitude, year, Julian day, and time of day (UTC) to ASCII text files for each survey line. The data were filtered using AWK (no version) to save records for the first and last shots, and shots at unique longitude/latitude positions in between. Geographic coordinates (WGS84) were converted to UTM zone 16 coordinates (WGS84) using Proj (version 4.6.0), and added to the text files in two new columns. Process_Date: 201010 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: Text files created in the previous step were concatenated into a comma-delimited text file , then imported into ArcMap (version 9.2) using 'Add XY data' and saved as points (Geographic, WGS84) in the ESRI shapefile format. Process_Date: 201010 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: The shapefile created in the previous step was used as an input for VACExtras (version 1.97), a VB collection of tools developed by VeeAnn Cross (USGS-WHCMSC), which converts point data to a new polyline shapefile ('stpete_SeismicTrackline.shp'), based on record order. The 'FileName' field was used to define which points were used to generate each polyline feature. Using XTools Pro (version 5.2.0) for ArcGIS desktop, the length of each polyline segment was calculated and included in the attribute field 'Length', specifying UTM, Zone 16, WGS84, and kilometers. The "find and replace" option in the ArcMap attribute table viewer was used to modify the 'ImageName' attribute to correctly reflect the relative path of the directory containing the seismic-reflection profile portable network graphic (PNG) images ('GIS_catalog\Seisimage\10cct02\') by replacing the '10i' preceding each image name with 'pathname' + the preceding characters. Process_Date: 201010 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 76 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 10cct02_SeismicTrackline Entity_Type_Definition: Trackline for seismic profiles Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Id Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: FileName Attribute_Definition: Name of seismic data file Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Sequential line and file numbers used to distinguish tracklines Attribute: Attribute_Label: ImageName Attribute_Definition: Name of seismic profile PNG image used as hyperlink Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Sequential line and file numbers used to distinguish images Attribute: Attribute_Label: Shot Attribute_Definition: Initial shot number in the profile Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: shot number Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Year Attribute_Definition: Calendar year data were collected Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2010 Enumerated_Domain_Value_Definition: year Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: JulDay Attribute_Definition: Julian day data were collected (Julian day is the integer number representing the interval of time in days since January 1 of the year). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 78 Range_Domain_Maximum: 88 Attribute_Units_of_Measure: day Attribute: Attribute_Label: Shot_end Attribute_Definition: Final shot number in the profile Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1380 Range_Domain_Maximum: 19268 Attribute_Units_of_Measure: shot number Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Length Attribute_Definition: Length of profile in kilometers (UTM Zone 16N, WGS84) Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.69 Range_Domain_Maximum: 12.81 Attribute_Units_of_Measure: kilometer Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Elizabeth A. Pendleton 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2259 Contact_Facsimile_Telephone: (508)-457-2310 Contact_Electronic_Mail_Address: ependleton@usgs.gov Resource_Description: Downloadable Data 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: WinZip Format_Version_Number: 14.5 Format_Information_Content: This WinZip file contains trackline navigation for EdgeTech SB-512i chirp seismic-reflection data collected by the U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center offshore of the Gulf Islands, MS File_Decompression_Technique: Use WinZip or pkUnzip Transfer_Size: 1.60 Mb Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2010/1178/GIS_catalog/Tracklines/10cct02_seismic_trks.zip Access_Instructions: Data can be downloaded via the World Wide Web (WWW) Fees: none Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2011/1178/GIS_catalog/Tracklines/stpete_SeismicTrackline.zip Access_Instructions: Data can be downloaded 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 Technical_Prerequisites: This zip file contains data available in Environmental Systems Research Institute (ESRI) point shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20110428 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Elizabeth A. Pendleton 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2259 Contact_Facsimile_Telephone: (508)-457-2310 Contact_Electronic_Mail_Address: ependleton@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_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile