Metadata: Identification_Information: Citation: Citation_Information: Originator: Karynna Calderon Originator: Shawn V. Dadisman Originator: Dann K. Yobbi Originator: W. Scott McBride Originator: James G. Flocks Originator: Dana S. Wiese Publication_Date: 2005 Title: Archive of Digital Boomer Seismic Reflection Data Collected During USGS Field Activity 04SGI01 in the Withlacoochee River of West-Central Florida, March 2004 Geospatial_Data_Presentation_Form: Seismic Reflection Profile Section Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 119 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/ds/2007/119/ Description: Abstract: In March of 2004, the U.S. Geological Survey conducted a geophysical survey in the Withlacoochee River of west-central Florida. This report serves as an archive of unprocessed digital boomer seismic reflection data, trackline maps, navigation files, GIS information, Field Activity Collection System (FACS) logs, observer's logbook, and FGDC metadata. Filtered and gained digital images of the seismic profiles are also provided. The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG-Y format (Barry and others, 1975) and may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU). Example SU processing scripts and USGS software for viewing the SEG-Y files (Zihlman, 1992) are also provided. For more information on the seismic surveys see http://walrus.wr.usgs.gov/infobank/w/w104fl/html/w-1-04-fl.meta.html These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications. Purpose: The data archived here were collected as part of a study to evaluate the connection between the Upper Floridan aquifer and the Withlacoochee River. This study is part of the USGS Surface Groundwater Interactions (SGI) Project. For further information about the study, please contact Dann Yobbi at dyobbi@usgs.gov. Supplemental_Information: The USGS Florida Integrated Science Center (FISC) - St. Petersburg assigns a unique identifier to each cruise or field activity. For example, 04SGI01 tells us the data were collected in 2004 for the Surface Groundwater Interactions (SGI) Project and the data were collected during the first field activity for that project in that calendar year. Refer to for a detailed description of the method used to assign the field activity ID. The naming convention used for each seismic line is as follows: yye##a, where yy is the last two digits of the year in which the data were collected, e is a 1-letter abbreviation for the equipment type (i.e., b for boomer and c for chirp), ## is a 2-digit number representing a specific track, and a is a letter representing the section of a line if recording was prematurely terminated or rerun for quality or acquisition problems. The boomer is an acoustic energy source that consists of capacitors charged to a high voltage and discharged through a transducer in the water. The transducer is towed on a sled at the water surface and when discharged emits a short acoustic pulse, or shot, that propagates through the water and sediment column. The acoustic energy is reflected at density boundaries (such as the seafloor or sediment layers beneath the seafloor), detected by the receiver, and recorded by a PC-based seismic acquisition system. This process is repeated at timed intervals (e.g., 0.25 s) and recorded for specific intervals of time (e.g., 100 ms). In this way, a two-dimensional vertical image of the shallow geologic structure beneath the ship track is produced. A C-Products C-Boom power supply provided 100 joules per shot. Reflected energy was received by a Benthos MESH streamer and recorded by Triton Elics International, Inc. (TEI) Delph Seismic acquisition software. The streamer contains ten hydrophones evenly spaced about every 30.5 cm (every 12 inches). The sample frequency of the data is 24 kHz. Record length for all tracklines is 100 ms, and the shot rate was every 0.25 s. Shot spacing varied and should be calculated for each line of interest. Coherent noise was detected on most of the profiles. Attempts to mitigate the noise had varying degrees of success and included frequent changes in the acquisition geometry and grounding of the power supply. The source of the noise remains uncertain, but a new generator or the engine propeller might be the origin. Figure 1 included with this archive (Data Series 119) displays acquisition geometries for this field activity. For more information about the acquisition geometry, refer to the science logbook and handwritten FACS logs also included with this archive. The unprocessed seismic data are stored in SEG-Y, integer, Motorola format, which is a standard digital format that can be read and manipulated by most seismic processing software packages (Barry and others, 1975). The SEG-Y formatted trace files have a .TRA extension. Additional recording parameters for each trace file can also be found in the .PAR file associated with each .TRA file. However, the .PAR and .PLN files included here are only needed to process or display the data with TEI Delph Seismic software. Also provided are example Seismic Unix scripts that allow the user to strip off navigation fixes from the SEG-Y headers, along with a fix for every 500 shots, and produce a filtered and gained GIF image of each profile. The printable profiles provided here are GIF images that were filtered and gained using Seismic Unix software. The processed SEG-Y data were then exported to Chesapeake Technology, Inc. (CTI) SonarWeb software to produce an interactive version of the profile that allows the user to obtain a geographic location and depth from the profile for a curser position. This information is displayed in the status bar of the browser. Warning! The only supported web browsers that properly display all features of the interactive profiles are Internet Explorer 6 for Windows and Firefox 1.5 for all platforms. For all browsers, the status bar and JavaScript must be enabled. Firefox also requires "Change status bar text" to be checked under Advanced JavaScript Options. Cautionother browsers may result in spurious or no information given in the status window. Firefox may be downloaded at http://www.mozilla.org/products/firefox. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040301 Ending_Date: 20040305 Currentness_Reference: Data collection interval Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -82.457496 East_Bounding_Coordinate: -82.168435 North_Bounding_Coordinate: 29.043365 South_Bounding_Coordinate: 28.519395 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:e1925d3c-f54f-459e-8eee-661519025fc3 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: marine seismic reflection Theme_Keyword: boomer Theme_Keyword: SEG-Y Theme_Keyword: Surface Groundwater Interactions Theme_Keyword: 04SGI01 Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: substrate Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: seismic reflection Theme_Keyword: marine geophysics Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: seismic reflection methods Theme_Keyword: sub-bottom profiling Theme_Keyword: marine geophysics Place: Place_Keyword_Thesaurus: None Place_Keyword: Florida Place_Keyword: Withlacoochee River Place_Keyword: Princess Lake Place_Keyword: Bonnet Lake Place_Keyword: Nelson Lake Place_Keyword: Lake Annie Place_Keyword: Silver Lake Access_Constraints: None. These data are held in the public domain. Use_Constraints: The U.S. Geological Survey requests to be acknowledged as the originator of the data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Dann K. Yobbi Contact_Organization: U.S. Geological Survey Contact_Position: Hydrologist Contact_Address: Address_Type: mailing and physical Address: 10500 University Center Dr., Suite 205 City: Tampa State_or_Province: FL Postal_Code: 33612 Country: USA Contact_Voice_Telephone: (813) 975-8620, ext. 164 Contact_Electronic_Mail_Address: dyobbi@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/all.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected during USGS Field Activity 04SGI01. This map was created at a scale of 1:275,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_a.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area A (refer to Area A of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_b.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area B (refer to Area B of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_c.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area C (refer to Area C of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_d.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area D (refer to Area D of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_e.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area E (refer to Area E of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_f.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area F (refer to Area F of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_g.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area G (refer to Area G of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2007/119/maps/cruisenav/area_h.jpg Browse_Graphic_File_Description: Trackline map of digital boomer seismic reflection data collected in Area H (refer to Area H of the full survey area map) during USGS Field Activity 04SGI01. This map was created at a scale of 1:50,000. Refer to the Lineage section below for the trackline map creation process. Browse_Graphic_File_Type: JPEG Data_Set_Credit: Funding for this study was provided by the Federal-State Cooperative Water Program and the USGS Coastal and Marine Geology Program. This document was improved by the reviews of T.J. Smith and E.A. Shinn of the USGS in St. Petersburg, Florida. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The validity or accuracy of marine seismic reflection profiles is highly qualitative and depends on equipment and operating condition variables. Visual inspection of the images rendered from the data did not show any major anomalies. All data were collected in UTM Zone 17; however, equipment was incorrectly set to UTM Zone 18 for lines 04b01-04b19 during data collection. Each data set was processed with respect to the UTM reference zone it was created in. Logical_Consistency_Report: This data set is from one field activity with consistent instrument calibrations. However, acquisition geometry changed throughout this field activity. For more information about the acquisition geometry, refer to figure 1, the science logbook, and the handwritten FACS logs included with this archive (Data Series 119). Refer to the Attribute Accuracy Report above for details about UTM zones recorded for this field activity. Completeness_Report: These data are collected along tracklines (2-D) and are therefore inherently incomplete. Geologic details between lines must be inferred. No digital data were collected for line 04b29. Navigation is missing for shots 15,896-16,014 of line 04b11, the first 159 shots of line 04b16a, and the first 838 shots of line 04b22. On the trackline maps, the location of missing navigation data within a line is inferred by linear interpolation of the first and last known data points. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: As the seismic reflection data were acquired, the position of the vessel was continuously determined by a CSI Wireless DGPS Max DGPS receiver, which is accurate within 1 m if WAAS is available, or 3-5 m otherwise. Positions were recorded and written to the trace headers in UTMs about every 1 s. The navigation files, trackline maps, line navigation maps, and interactive profiles have not been corrected to reflect the varying (approximately 1-15 m) offset between the boomer midpoint and GPS antenna. For this measurement, see the acquisition geometry descriptions recorded in figure 1, the science logbook, and the handwritten FACS logs included with this archive (Data Series 119). Refer to the Attribute Accuracy Report above for information about UTM zones recorded for this field activity. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Boomer data are relative to water level. However, varying recorded static shifts of the data have been known to occur. Therefore, these data are not to be used for bathymetry. Lineage: Process_Step: Process_Description: Boomer processing: The original trace files for lines 04b04, 04b10, 04b16, 04b20, and 04b27 were divided into two trace files each (e.g., 04b04 became 04b04a and 04b04b) because the original total number of traces exceeded the maximum allowed by the processing software. The SEG-Y data for all lines were then processed with Seismic Unix software to produce GIF images of the seismic profiles included in this report. A representative boomer processing sequence consisted of: 1) Bandpass filter: 300-500-2500-3000 Hz, 2) Automatic gain control, 3) Postscript display, and 4) Conversion of Postscript image to a GIF image. The processed SEG-Y data were then exported to CTI SonarWeb software to produce an interactive version of each profile that allows the user to obtain a geographic location and depth from the profile for a cursor position. Refer to the Supplemental Information section above for details on how to use the interactive profiles. Process_Date: 2004 Process_Step: Process_Description: Navigation processing: Shotpoint navigation files and 500-shot-interval location files were extracted from the trace headers of each line using Seismic Unix software and edited to remove or correct spurious data points and fix incorrectly recorded dates. The navigation files were then processed with PROJ.4 software () to generate latitude and longitude from UTMs and reformatted for use with Environmental Systems Research Institute (ESRI) ArcView GIS software. Refer to the Attribute Accuracy Report above for information about UTM zones recorded for this field activity. Process_Date: 2004 Process_Step: Process_Description: Trackline map creation: The trackline maps provided in this archive were created using ESRI ArcView 3.3 and ArcGIS 8.3 software, exported to Adobe Illustrator for further editing, and saved in JPEG format. The maps are in geographic coordinates, NAD83 (unprojected). The cities layer is an ESRI data set. The highways layer is a Bureau of Transportation Statistics/ESRI data set. The hydrography layers are Southwest Florida Water Management District data sets. The USGS is the originator of all other layers. A map of trackline navigation for each seismic profile was also produced with CTI SonarWeb software. Process_Date: 2004 Process_Step: Process_Description: Archive preparation: In addition to the process steps described above, the following steps were taken to produce this archive: the handwritten FACS logs and observer's logbook were scanned and saved as PDF files, digital FACS logs were created using the handwritten logs and personal accounts of the crew members and saved as PDF files, and an HTML-based format was used to present the various parts of this archive. Process_Date: 2004 Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170124 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Horizontal X and Y locations (latitude and longitude and UTMs) for each shot are provided as ASCII text files, along with the date and time (UTC) the shot was recorded. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000009 Longitude_Resolution: 0.000009 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Binary data file: Trace data are available as binary files in SEG-Y format. These files have a .TRA extension and range in size from 1.6 KB to 98.4 MB. Entity_and_Attribute_Overview: Graphic image file: Printable profiles are GIF images that range in size from 96 KB to 2.6 MB. Interactive profiles are HTML pages that range in size from 15 to 364 KB. Accompanying JPEG images range in size from 160 KB to 10.9 MB. Line navigation maps are JPEG images that range in size from 60 to 219 KB. Trackline maps, which range in size from 88 to 137 KB, are JPEG images that contain links to the seismic profiles and line navigation maps. Entity_and_Attribute_Overview: Navigation file: Navigation files are available as ASCII text files. Raw navigation files measure 4-254 KB. Edited navigation files measure 2.2-3.9 MB, and edited 500-shot-interval location files measure 14.2-33.7 KB. Entity_and_Attribute_Overview: GIS file: The GIS project used to create the trackline maps is provided as a zip file composed of map documents, shapefiles, and metadata. The map documents range in size from 506 to 901 KB, and the shapefiles range in size from 2.31 KB to 54.8 MB. Entity_and_Attribute_Detail_Citation: Barry, K.M., Cavers, D.A., and Kneale, C.W., 1975, Recommended standards for digital tape formats: Geophysics, v. 40, n. 2, p. 344-352. Also available online at: . Entity_and_Attribute_Detail_Citation: Zihlman, F.N., 1992, DUMPSEGY V1.0: A program to examine the contents of SEG-Y disk-image seismic data: U.S. Geological Survey Open-File Report 92-590, 28 p. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Shawn Dadisman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 600 4th St. S. City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747, ext. 3029 Contact_Electronic_Mail_Address: sdadisman@usgs.gov Contact_Instructions: Data may be available on-line only by special arrangement with the distributor above. Resource_Description: U.S. Geological Survey Data Series 119 Distribution_Liability: This DVD publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published on this DVD have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SEG-Y Format_Information_Content: The SEG-Y standard format (Barry and others, 1975) consists of the following: a 3,600-byte reel identification header, with the first 3,200 bytes consisting of an ASCII header block followed by a 400-byte binary header block, both of which include information specific to line and reel number; a trace data block that follows the reel identification header, with the first 240 bytes of each trace block consisting of the binary trace identification header; and seismic data samples that follow the trace identification header. File_Decompression_Technique: None Transfer_Size: 1730 Digital_Transfer_Option: Offline_Option: Offline_Media: DVD Recording_Format: ISO 9660 Compatibility_Information: UNIX, LINUX, DOS, Macintosh Digital_Form: Digital_Transfer_Information: Format_Name: map document, shapefile, metadata Format_Information_Content: The GIS project used to create the trackline maps is composed of map documents, shapefiles, and metadata. Map documents were created using ESRI ArcGIS 8.3 software. The shapefiles provided may also be viewed using other versions of ArcView, ArcGIS, or public domain software ArcExplorer (). File_Decompression_Technique: unzip Transfer_Size: 46.3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/2007/119/software/arc/arc.zip Digital_Form: Digital_Transfer_Information: Format_Name: SEGY data download Format_Information_Content: The SEG-Y standard format (Barry and others, 1975) consists of the following: a 3,600-byte reel identification header, with the first 3,200 bytes consisting of an ASCII header block followed by a 400-byte binary header block, both of which include information specific to line and reel number; a trace data block that follows the reel identification header, with the first 240 bytes of each trace block consisting of the binary trace identification header; and seismic data samples that follow the trace identification header. File_Decompression_Technique: none Transfer_Size: 1730 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data/04sgi01/boomer/ Fees: Prices vary. Ordering_Instructions: Publications are available from USGS Information Services, Box 25286, Federal Center, Denver, CO 80225-0046 (telephone: 1-888-ASK-USGS; e-mail: infoservices@usgs.gov). Technical_Prerequisites: Use of SEG-Y data requires specialized seismic processing software, such as public domain software Seismic Unix (). Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Karynna Calderon Contact_Organization: CSC, contracted to USGS Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical Address: 600 4th St. South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747, ext. 3143 Contact_Electronic_Mail_Address: kcalderon@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998