Metadata: Identification_Information: Citation: Citation_Information: Originator: Jared W. Kluesner Originator: Daniel S. Brothers Originator: Ray W. Sliter Publication_Date: 2017 Title: Reprocessed 3D seismic-reflection data and neural-network fault cube, offshore of Point Sal, central California, from 2012-08-12 to 2012-10-05 (USGS field activity P-04-11-CC) Geospatial_Data_Presentation_Form: 3D boomer seismic-reflection data in SEG-Y format Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7HD7TKM Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7HD7TKM Description: Abstract: This dataset includes reprocessed boomer 3D seismic data collected by the Fugro Consultants Inc. in 2012, offshore Point Sal, central California. Purpose: This data release includes boomer 3D seismic data collected in 2012 offshore Point Sal, central California as part of PG&E’s Central California Seismic Imaging Project (Pacific Gas and Electric Company [PG&E],2014). The U.S. Geological Survey conducted advanced post-processing and neural-network fault calculations on the data for improved fault detection (Kluesner and Brothers, 2016). Following generation of the cleaned, 3D, volume- and neural-network fault cube, each volume was exported using the OpendTect software package. Both the cleaned 3D volume and fault volume are in SEG-Y format and are provided here. Supplemental_Information: Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=P0411CC 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: 20120822 Ending_Date: 20121005 Currentness_Reference: ground condition at the time the data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.79588 East_Bounding_Coordinate: -120.74060 North_Bounding_Coordinate: 34.95434 South_Bounding_Coordinate: 34.85861 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:1e83ce9e-a8be-4de9-aeb4-f453c471cb87 Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Bathymetry Theme_Keyword: Continental Margins Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sub-bottom profiling Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: seismic reflection profiling Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: boomer Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMG Theme_Keyword: CMGP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place_Keyword: State of California Place_Keyword: San Luis Obispo County Place_Keyword: Point Sal 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(s) of the dataset and in products derived from these data. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This information is not intended for navigational purposes. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: PCMSC Science Data Coordinator 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: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Native_Data_Set_Environment: SEG-Y Rev 1 Cross_Reference: Citation_Information: Originator: D.R. Ebuna Originator: T.R. Mitchell Originator: P.J. Hogan Originator: S. Nishenko Originator: H.G. Greene Publication_Date: 2013 Title: The California Seafloor Mapping Program - Providing science and geospatial data for California's State Waters Series_Information: Series_Name: 26th Symposium on the Application of Geophysics to Engineering and Environmental Problems Issue_Identification: p. 311-320 Publication_Information: Publication_Place: Red Hook, NY Publisher: Curran Associates, Inc. Online_Linkage: http://www.proceedings.com/18180.html Cross_Reference: Citation_Information: Originator: Fugro Consultants Inc. Publication_Date: 2012 Title: Software validation of Uniseis and 3D data qualification of 2010–2011 high-resolution marine survey data, Offshore Diablo Canyon Power Plant, Central Coastal California Seismic ImagingProject Series_Information: Series_Name: Report No. PGEQ-PR-03 (Rev0), FSI Project No. 2011-4493 Issue_Identification: p. 1-67 Publication_Information: Publication_Place: Oakland, CA Publisher: Fugro Consultants Inc. Online_Linkage: https://www.pge.com/includes/docs/pdfs/safety/systemworks/dcpp/report/Ch2.GEO.DCPP.TR.12.01_R1_AppA.pdf Cross_Reference: Citation_Information: Originator: Jared W. Kluesner Originator: Daniel J. Brothers Publication_Date: 2016 Title: Seismic attribute detection of faults and fluid pathways within an active strike-slip shear zone: New Insights from high-resolution 3D P-Cable seismic data along the Hosgri Fault, offshore California Series_Information: Series_Name: AAPG/SEG Interpretation Issue_Identification: volume 4, issue 1 Publication_Information: Publication_Place: Tulsa, OK Publisher: Society of Exploration Geophysicists Online_Linkage: https://dx.doi.org/10.1190/INT-2015-0143.1 Cross_Reference: Citation_Information: Originator: S. Nishenko Originator: P. Hogan Originator: R. Kvitek Publication_Date: 2012 Title: Seafloor mapping for earthquake, tsunami hazard assessments Series_Information: Series_Name: Sea Technology Issue_Identification: v. 53, p. 15-20 Publication_Information: Publication_Place: Arlington, VA Publisher: Sea Technology Online_Linkage: https://dx.doi.org/10.1190/INT-2015-0143.1 Cross_Reference: Citation_Information: Originator: Pacific Gas and Electric Company (PG&E) Publication_Date: 2014 Title: Offshore low-energy seismic reflection studies in Estero Bay, San Luis Obispo Bay, and Point Sal Areas Series_Information: Series_Name: PG&E Technical Report Issue_Identification: GEO.DCPP.TR.14.02 Publication_Information: Publication_Place: Oakland, CA Publisher: Fugro Consultants Inc. Online_Linkage: https://www.pge.com/includes/docs/pdfs/safety/systemworks/dcpp/report/Ch2.GEO.DCPP.TR.12.01_R1_AppA.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Identified as best available version. Logical_Consistency_Report: Seismic data were acquired using a triple-plate boomer source operated at 1.75 kJ and the P-Cable streamer 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 Differential Global Positioning System (DGPS) navigation receiver. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depths shown in the seismic data volumes are in milliseconds (round trip travel time) and are referenced to sea level. Vertical resolution is approximately 1 millisecond and vertical accuracy is approximately plus or minus 4 milliseconds depending on sea state. Lineage: Process_Step: Process_Description: Seismic data were acquired using a triple-plate boomer source operated at 1.75 kJ and the P-Cable streamer system. The 3D data show a frequency range of approximately 100-700 Hz, with a dominant frequency of 200-225 Hz (PG&E, 2014). The P-Cable system consisted of 14, 8-channel digital streamers with 6.25 m hydrophone group spacing (Nishenko and others, 2012; Ebuna and others, 2013). Data were sampled at 0.25 ms with a record length of 0.75 s two-way travel-time. Seismic processing steps conducted by Fugro Consultants included quality control, tidal corrections, velocity analysis, NMO correction, stacking, surface related multiple elimination, deconvolution, crossline statics, and pre-stack migration (Fugro Consultants Inc., 2012; PG&E, 2014). However, upon public release and inspection by the USGS, significant high-frequency noise was observed, limiting the interpretation of imaged fault structures (Kluesner and Brothers, 2016). Process_Date: 2012 Process_Step: Process_Description: The publically released 3D seismic data were downloaded and analyzed by the USGS and a post-stack data-conditioning workflow was designed to reduce noise, short-period multiples, and enhance the overall quality. The workflow followed the methods described in Kluesner and Brothers, 2016. Data were imported into the OpendTect software package, and a dip-steering volume was calculated using a 1x1x1 (inline, crossline, sample interval) calculation window. Following dip-steering calculation a median filter was applied with a 1x1x1 step-out, resulting in a smoothed 3D volume of dip and azimuth information for all seismic events. The dip-steered median filter was then applied to the data with a 1x1 (inline, crossline) stepout, with no time window. Filtered results were then subtracted from the original data to produce a volume with significant noise suppression. Both random and apparent acquisition noise were suppressed, while enhancing laterally continuous events. Following filtering and noise suppression, a post-stack 3D predictive deconvolution filter was designed in order to suppress apparent ringing within the data. Throughout the 3D volume, the seafloor reflection suffers from a long wavelength, masking geology below. The filter effectively suppressed the ringing/short-period multiples and also sharpened reflections at depth. For enhanced fault detection, a neural-network multi-attribute workflow was designed that used 32 different seismic attributes. The 32 attributes, which consisted of calculations such as similarity, curvature, and noise, were used as input nodes in the neural-network. The hidden layer of the neural-network consisted of 16 nodes, and user picks of faults and non-faults were used to supervise the network training. Training was stopped when the normalized root-mean-square (RMS) error reached a minimum value (< 0.5), along with misclassification percentage of picks. Post training, a 3D volume was generated (fault cube) that contains fault probability measurements scaled between 0 (non-fault) and 1 (fault). This information was then projected onto vertical and horizontal seismic slices to help identify and interpret probable faults imaged within the dataset. Process_Date: 2016 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 Process_Step: Process_Description: Data were moved to a new repository, and metadata was edited to reflect the new location. Other edits were performed as needed to bring the metadata up to PCMSC standards, including a slight rewording of the title. No data were changed. Process_Date: 20210831 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan A Cochran Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Horizontal X and Y locations for the seismic profile locations are provided in shapefiles and are stored in the SEG-Y data trace headers in the standard header locations. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_84 Ellipsoid_Name: WGS_84 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 - CMGDS Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 1-831-427-4747 Resource_Description: P-04-11-CC_ps.mcs3d.boomer.zip This zip file contains reprocessed seismic-reflection 3D volume (SEG-Y) and navigation (shapefile) data collected during field activity P-04-11-CC. 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 reprocessed seismic data File_Decompression_Technique: Winzip, 7-zip, or Winrar are free software that will open .zip files Transfer_Size: 11854 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/F7HD7TKM Fees: None Metadata_Reference_Information: Metadata_Date: 20210910 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: PCMSC Science Data Coordinator Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. 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