Metadata: Identification_Information: Citation: Citation_Information: Originator: Alicia F. Balster-Gee Originator: Jenna C. Hill Originator: Thomas F. O’Brien Publication_Date: 20200225 Title: Archive of boomer subbottom data collected offshore Eureka, California during USGS field activity W-1-96-NC from 1996-06-29 to 1996-07-07 Geospatial_Data_Presentation_Form: seismic-reflection data in SEG-Y format Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P950276G Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P950276G Online_Linkage: https://cmgds.marine.usgs.gov/data-releases/media/2020/10.5066-P950276G/dd52818abf5b47809f8f682cece00ddb/W196NC-boomer-sgy.zip Description: Abstract: This data release contains boomer subbottom data collected in June and July of 1996 on the shelf and slope offshore Eureka, California. Subbottom acoustic penetration spans up to several tens of meters, and is variable by location. This data release contains digital SEG-Y data. The data were collected aboard the R/V Wecoma using a Huntec Hydrosonde Deep-Tow system. Purpose: The U.S. Geological Survey (USGS) collected boomer subbottom profiles in the summer of 1996 offshore Eureka, California, as part of the STRATAFORM Project, which aimed to image the upper 100 meters of sediment and to determine architecture of depositional units along continental margins (Minasian and others, 2001). These data and information are intended for science researchers, students from elementary through college, policy makers, and general public. Supplemental_Information: Additional information about the field activities from which these data were derived is available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=1996-030-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19960629 Ending_Date: 19960707 Currentness_Reference: ground condition at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -125.255 East_Bounding_Coordinate: -124.14551 North_Bounding_Coordinate: 41.1373 South_Bounding_Coordinate: 39.91816 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:90c444d0-2b4f-4fe4-9ddf-814c78cd6a6e Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sub-bottom profiling Theme_Keyword: geospatial datasets Theme_Keyword: marine geophysics Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: seismic reflection profiling Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme_Keyword: boomer Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: State of California Place_Keyword: Crescent City Place_Keyword: City of Eureka Place_Keyword: Eel River Place: Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS) Place_Keyword: Eel Canyon Place_Keyword: Bear Valley Place_Keyword: Mattole Canyon Place_Keyword: Trinidad Canyon Access_Constraints: None Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator of the dataset and in products derived from these data. This information is not intended for navigation purposes. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://cmgds.marine.usgs.gov/data-releases/media/2020/10.5066-P950276G/094b4e9245bf404aa708ffe563ba67ee/W196NC_indexmap.png Browse_Graphic_File_Description: Index map of track lines Browse_Graphic_File_Type: PNG Data_Set_Credit: Affiliate investigators: Michael E. Field, James V. Gardner, and John Gann (all USGS) Native_Data_Set_Environment: SEG-Y Rev 1 Cross_Reference: Citation_Information: Originator: Diane L. Minasian Originator: Homa J. Lee Originator: Jaques Locat Originator: Kevin M. Orzech Originator: Gregory R. Martz Originator: Kenneth Israel Publication_Date: 2001 Title: The STRATAFORM Project: U.S. Geological Survey Geotechnical Studies: U.S. Geological Survey Open-File Report 01-190 Other_Citation_Details: Minasian, Diane L., Lee, Homa J., Locat, Jaques, Orzech, Kevin M., Martz, Gregory R., Israel, Kenneth, 2001, The STRATAFORM Project: U.S. Geological Survey Geotechnical Studies: U.S. Geological Survey Open-File Report 01-190, https://pubs.usgs.gov/of/2001/0190/. Online_Linkage: https://pubs.usgs.gov/of/2001/0190/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Identified as best available version. Logical_Consistency_Report: Subbottom data were collected during USGS cruise W-1-96-NC using a Huntec Hydrosonde Deep-Tow system. Quality control was conducted during the collection process. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Position data were provided by a Global Postitioning System (GPS) navigation receiver. A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depths shown in the seismic data files are in milliseconds (round trip travel time) and are referenced to sea level. Lineage: Process_Step: Process_Description: Boomer seismic-reflection data were obtained using a Huntec Deep Tow System. The Huntec Deep Tow System is a boomer mounted on a sled towed 25–100 m deep. The system has two receivers, an internal hydrophone and an external 10-element, 5-m hydrophone streamer. At the maximum energy of 550 J, the system produces a source bandwidth of ~0.6–6 kHz centered at 3.5 kHz. Source_Used_Citation_Abbreviation: collection Process_Date: 19960707 Process_Step: Process_Description: Boomer sub bottom profiles were processed using Echos by Paradigm seismic software. Channel 1 was used and the deep-water delay trace header values (byte 109 DWD) were applied and record length extended. UTM zone 10N navigation was written to header bytes 73 and 77. Source_Used_Citation_Abbreviation: processing Process_Date: 20190201 Process_Step: Process_Description: Corrections made to URLs in metadata, which were still pointing to the development site. No data were changed. (scochran@usgs.gov) Process_Date: 20200422 Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 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 for the seismic profile locations are provided in ASCII position files and are stored in the SEG-Y data trace headers in header bytes 73 and 77. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: WGS 1984 UTM Zone 10N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0001 Ordinate_Resolution: 0.0001 Planar_Distance_Units: Meter Geodetic_Model: Horizontal_Datum_Name: D WGS 1984 Ellipsoid_Name: WGS 1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Local surface Depth_Resolution: 0.1 Depth_Distance_Units: meters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Navigation and seismic shots with time stamp in standard SEG-Y file format Entity_and_Attribute_Detail_Citation: Society of Exploration Geophysicists (SEG) Technical Standards, available for download at http://seg.org/Publications/SEG-Technical-Standards] Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 1-831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: W196NC-boomer-sgy.zip This zip file contains boomer sub-bottom (SEG-Y) data collected during USGS field activity W-1-96-NC. These data are divided up and presented by navigation line, as reflected in the individual file names. Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SEG-Y Format_Version_Number: SEG-Y rev 1 Format_Information_Content: Zip file contains the processed seismic data per navigation line File_Decompression_Technique: Winzip, 7-zip, or Winrar are free software that will open .zip files Transfer_Size: 658.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data-releases/media/2020/10.5066-P950276G/dd52818abf5b47809f8f682cece00ddb/W196NC-boomer-sgy.zip Network_Resource_Name: https://doi.org/10.5066/P950276G Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page for the data release. Fees: None. Technical_Prerequisites: Use of SEG-Y data requires specialized software, such as ProMax and Seisworks by Landmark Geophysical; FOCUS and SeisX by Paradigm Geophysical; SPW by Parallel Geoscience; VISTA by Seismic Image Software; SeiSee by Dalmorneftegeophysica (DMNG); amongst others. Metadata_Reference_Information: Metadata_Date: 20201019 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998