Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Publication_Date: 20081216 Title: Geophysical data of field activity L-1-91-NC in San Francisco Bay from 09/03/1991 to 09/20/1991 Publication_Information: Publisher: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Online_Linkage: http://walrus.wr.usgs.gov/infobank/gos/l-1-91-nc.fmeta.xml Online_Linkage: http://walrus.wr.usgs.gov/infobank/l/l191nc/html/l-1-91-nc.meta.html Description: Abstract: Chief Scientists: Pat Hart, Jill McCarthy. Geophysical data (3dot5khz, 12khz, uniboom, airgun, airgunmonitor) of field activity L-1-91-NC in San Francisco Bay from 09/03/1991 to 09/20/1991, http://walrus.wr.usgs.gov/infobank/l/l191nc/html/l-1-91-nc.meta.html. Purpose: These data and information are intended for science researchers, students from elementary through college, policy makers, and general public. Supplemental_Information: Equipment Used - 3dot5khz 3.5 khz bathymetry 12khz 12 khz bathymetry uniboom airgun single-channel airgun airgunmonitor single-channel airgun monitor Publications - Anima, R.J., Williams, Patrick L., and McCarthy, J., 1992, High-resolution marine seismic reflection profiles across East Bay faults, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 4.

Hart, P.E., Clymer, R.W., and Karageorgi, E.D., 1992, Geometry of the San Francisco Bay area faults; preliminary results from BASIX, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 30.

McEvilly, T.V., and McCarthy, Jill, 1992, BASIX; the Bay Area Seismic Imaging Experiment report, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 47.

McCarthy, Jill, and Hart, Patrick E., 1993, Data report for the 1991 Bay area seismic imaging experiment (BASIX): U.S. Geological Survey Open-File Report 93-0301, 26 p.

Hart, P., McCarthy, J., Karageorgi, E., and McEvilly, T., 1993, Seismic reflection profiling in the San Francisco Bay area; the 1991 Bay Area Seismic Imaging Experiment (BASIX): Geological Society of America Abstracts with Programs, v. 25, no. 6, p. 417-418.

McCarthy, J., Hart, P., Karageorgi, E., and McEvilly, T., 1993, Seismic profiling across an evolving transform margin; results from the 1991 Bay Area Seismic Imaging eXperiment (BASIX): Geological Society of America Abstracts with Programs, v. 25, no. 6, p. 310.

Brocher, Thomas M., McCarthy, Jill, Hart, Patrick E., Holbrook, W. Steven, Furlong, Kevin P., McEvilly, Thomas V., Hole, John A., and Klemperer, Simon L., 1994, Seismic evidence for a lower-crustal detachment beneath San Francisco Bay, California: Science, v. 265, no. 5177, p. 1436-1439.

Childs, J.R., Hart, P.E., McCarthy, J., and Marlow, M.S., 1994, High-resolution seismic-reflection studies of submerged fault zones throughout the San Francisco Bay area: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 684.

McCarthy, J., Hart, P.E., Anima, R., Oppenheimer, D., and Parsons, T., 1994, Seismic evidence for faulting in the western Sacramento Delta region, Pittsburg, California: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 684-685.

McCarthy, J., Hart, P.E., and Oppenheimer, D., 1995, High angle faulting in western Sacramento Delta region, Pittsburg, California: American Association of Petroleum Geologists Bulletin, v. 79, no. 4, p. 592.

Parsons, Tom, McCarthy, Jill, and Hart, P.E., 1994, The nature of lower crustal reflectors beneath San Francisco Bay, California: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 643.

Williams, P.L., McEvilly, T.V., Anima, R., McCarthy, J., Nakata, T., Okamura, M., and Shimazaki, K., 1993, Fault activity, geometry, and recurrence behavior at the junction of the Rodgers Creek and Pinole faults, California: American Geophysical Union Eos, Transactions, v. 74, no. 43, Supplement, p. 411.

Holbrook, W. Steven, Brocher, T.M., McCarthy, Jill, Hole, J.A., and ten Brink, U.S., 1994, Crustal structure beneath the San Francisco Bay Block and Central California continental margin: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 664.

Pope, D.C., Brocher, T.M., McCarthy, J., Karageorgi, E.D., and Holbrook, W.S., 1993, Comparison of recording technology for onshore-offshore seismic profiling of continental margins; examples from BASIX: American Geophysical Union Eos, Transactions, v. 74, no. 43, Supplement, p. 445.

Brocher, Thomas M., McCarthy, Jill, and Holbrook, W. Steven, 1996, Imaging the transform plate boundary in the San Francisco Bay area, California: Geological Society of America Abstracts with Programs, v. 28, no. 7, p. 216.

Brocher, Thomas M., and Moses, Michael J., 1993, Onshore-offshore wide-angle seismic recordings of the San Francisco Bay Area Seismic Imaging Experiment (BASIX): the five-day recorder data: U.S. Geological Survey Open-File Report 93-276, 89 p.
Similar information is available for thousands of other USGS/CMG-related Activities. If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials. If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... http://walrus.wr.usgs.gov/infobank/ This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19910903 Ending_Date: 19910920 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.52004 East_Bounding_Coordinate: -121.70993 North_Bounding_Coordinate: 38.11173 South_Bounding_Coordinate: 37.20842 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS CMG InfoBank Theme_Keyword: Marine Geology Theme_Keyword: Marine Geophysics Theme_Keyword: Bathymetry Theme_Keyword: Water Depth Theme_Keyword: Seafloor Topography Theme_Keyword: Marine Seismic Place: Place_Keyword_Thesaurus: USGS CMG InfoBank Place_Keyword: CA Place_Keyword: Central California Place_Keyword: North Pacific Ocean Place_Keyword: Northern California Place_Keyword: Northern Pacific Ocean Place_Keyword: San Francisco Bay Place_Keyword: USA Access_Constraints: Physical materials are under controlled on-site access. If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html Use_Constraints: Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. This information is not intended for navigational purposes. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Contact_Person: Clint Steele Contact_Position: Data Acquisition, Processing, and Storage (DAPS) Group Leader Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5055 Contact_Facsimile_Telephone: (650) 329-5190 Contact_Electronic_Mail_Address: csteele@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://walrus.wr.usgs.gov/infobank/l/l191nc/html/l-1-91-nc.nav.gif Browse_Graphic_File_Description: Trackline map of L-1-91-NC Browse_Graphic_File_Type: GIF Data_Set_Credit: Al McClenghan (Ship Captain); Chris Poppe (Chief Mate, USGS Western Region); Bill Lafleur (Chief Engineer, USGS Western Region); Jill McCarthy (Chief Scientist, USGS Western Region); Kevin O'Toole (Mechanical Technician, USGS Western Region); Walt Olson (Mechanical Technician, USGS Western Region); Larry Kooker (Electronics Technician, USGS Western Region); Bill Robinson (Electronics Technician, USGS Western Region); Jim Vaughan (Electrical Engineer, USGS Western Region); Dave Hogg (Electronics Technician, USGS Western Region); Kaye Kinoshita (Navigator, USGS Western Region); George Knudson (Mechanical Technician, Fairfield); Steve Higgins (Electronics Technician, Fairfield); Mike Pawlik (Electronics Technician, Fairfield); Tom McEvilly (Geophysicist, University of California, Lawrence Berkeley Laboratories); Pat Hart (Geophysicist, USGS Western Region); Jon Childs (Geophysicist, USGS Western Region); Kevin Furlong (Geophysicist, Pennsylvania State University); Terry Proffer (Geophysicist, Haliburton Geophysicist.); Pat McClellan (Geophysicist, City Of San Leandro); Mike Marlow (Watchstander, USGS Western Region); Kathy Furlong (Unspecified Investigator, Pennsylvania State University); Kate King (Unspecified Investigator, CNN); Rick Blackbird (Unspecified Investigator, CNN); Chris Vincent (Unspecified Investigator, CNN); Gordon Smith (Ship Captain, David Johnston); Mark McLaughlin (Unspecified Investigator, David Johnston); Tom Parsons (Unspecified Investigator, Stanford University - David Johnston); Michael Hamer (Navigator, David Johnston, USGS Western Region); Roberto Anima (Ship Captain, Fast Eddy, USGS Western Region); Shawn Dadisman (Unspecified Investigator, Fast Eddy, USGS Western Region); Armando Buciaga (Unspecified Investigator, Fast Eddy, USGS Western Region); Tom Chase (Ship Captain, Chase Boat, USGS Western Region); Pete Dartnell (Unspecified Investigator, Chase Boat, USGS Western Region); Roy Kiesling (Vol. Unspecified Investigator, Chase Boat, USGS Western Region); Greg Gabel (Ship Captain, Caltrans); Holly Ryan (Unspecified Investigator, Caltrans); David Verdonck (Geophysicist, Pennsylvania State University, LLL); Dennis Mann (Ship Captain, Revenge, USGS Western Region); Ray Sliter (Unspecified Investigator, Revenge, USGS Western Region); Joe Svitek (Unspecified Investigator, Revenge, USGS Western Region); Rich Clymer (Unspecified Investigator, Mako, USGS Western Region); Pat Williams (Unspecified Investigator, Mako, USGS Western Region); Peter Barnes (Ship Captain, R/V Estero, USGS Western Region); Erik Gize (Unspecified Investigator, R/V Estero, USGS Western Region); Jean Riordan (Unspecified Investigator, USGS Western Region); Norman Maher (Unspecified Investigator, USGS Western Region); Vicky Goetcheus (Unspecified Investigator, USGS Western Region); Dave Scholl (Geophysicist, USGS Western Region); Eleni Karageorgi (Unspecified Investigator, Lawrence Berkeley Laboratories); Joel Rosenbaum (Photographer, Vacaville Reporter); Robert Reed (Unspecified Investigator, Vacaville Reporter); George Thompson (Geophysicist, Stanford University); Ben Page (Geophysicist, USGS Western Region); David McMahon (Unspecified Investigator, BC&DC); Doug Prose (Photographer, USGS Western Region); Nina Luttinger (Photographer, USGS Western Region); Tracy Vallier (Geologist, USGS Western Region); Andy Michael (Geophysicist, USGS Western Region); Stephanie Ross (Navigator, USGS Western Region); Diana Collins (Unspecified Investigator, USGS Western Region); June Matsueyda (Unspecified Investigator, USGS Western Region) Native_Data_Set_Environment: Digital, ASCII Cross_Reference: Citation_Information: Originator: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Publication_Date: Unknown Title: USGS/CMG Information Bank Publication_Information: Publisher: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Other_Citation_Details: Updated daily Online_Linkage: http://walrus.wr.usgs.gov/infobank/ Other_Citation_Details: Anima, R.J., Williams, Patrick L., and McCarthy, J., 1992, High-resolution marine seismic reflection profiles across East Bay faults, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 4. Other_Citation_Details: Hart, P.E., Clymer, R.W., and Karageorgi, E.D., 1992, Geometry of the San Francisco Bay area faults; preliminary results from BASIX, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 30. Other_Citation_Details: McEvilly, T.V., and McCarthy, Jill, 1992, BASIX; the Bay Area Seismic Imaging Experiment report, in Galehouse, Jon S., ed., Programs and abstracts of the Second conference on Earthquake hazards in the eastern San Francisco Bay area: California Division of Mines and Geology Special Publication, v. 113, p. 47. Other_Citation_Details: McCarthy, Jill, and Hart, Patrick E., 1993, Data report for the 1991 Bay area seismic imaging experiment (BASIX): U.S. Geological Survey Open-File Report 93-0301, 26 p. Other_Citation_Details: Hart, P., McCarthy, J., Karageorgi, E., and McEvilly, T., 1993, Seismic reflection profiling in the San Francisco Bay area; the 1991 Bay Area Seismic Imaging Experiment (BASIX): Geological Society of America Abstracts with Programs, v. 25, no. 6, p. 417-418. Other_Citation_Details: McCarthy, J., Hart, P., Karageorgi, E., and McEvilly, T., 1993, Seismic profiling across an evolving transform margin; results from the 1991 Bay Area Seismic Imaging eXperiment (BASIX): Geological Society of America Abstracts with Programs, v. 25, no. 6, p. 310. Other_Citation_Details: Brocher, Thomas M., McCarthy, Jill, Hart, Patrick E., Holbrook, W. Steven, Furlong, Kevin P., McEvilly, Thomas V., Hole, John A., and Klemperer, Simon L., 1994, Seismic evidence for a lower-crustal detachment beneath San Francisco Bay, California: Science, v. 265, no. 5177, p. 1436-1439. Other_Citation_Details: Childs, J.R., Hart, P.E., McCarthy, J., and Marlow, M.S., 1994, High-resolution seismic-reflection studies of submerged fault zones throughout the San Francisco Bay area: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 684. Other_Citation_Details: McCarthy, J., Hart, P.E., Anima, R., Oppenheimer, D., and Parsons, T., 1994, Seismic evidence for faulting in the western Sacramento Delta region, Pittsburg, California: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 684-685. Other_Citation_Details: McCarthy, J., Hart, P.E., and Oppenheimer, D., 1995, High angle faulting in western Sacramento Delta region, Pittsburg, California: American Association of Petroleum Geologists Bulletin, v. 79, no. 4, p. 592. Other_Citation_Details: Parsons, Tom, McCarthy, Jill, and Hart, P.E., 1994, The nature of lower crustal reflectors beneath San Francisco Bay, California: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 643. Other_Citation_Details: Williams, P.L., McEvilly, T.V., Anima, R., McCarthy, J., Nakata, T., Okamura, M., and Shimazaki, K., 1993, Fault activity, geometry, and recurrence behavior at the junction of the Rodgers Creek and Pinole faults, California: American Geophysical Union Eos, Transactions, v. 74, no. 43, Supplement, p. 411. Other_Citation_Details: Holbrook, W. Steven, Brocher, T.M., McCarthy, Jill, Hole, J.A., and ten Brink, U.S., 1994, Crustal structure beneath the San Francisco Bay Block and Central California continental margin: American Geophysical Union Eos, Transactions, v. 75, no. 44, Supplement, p. 664. Other_Citation_Details: Pope, D.C., Brocher, T.M., McCarthy, J., Karageorgi, E.D., and Holbrook, W.S., 1993, Comparison of recording technology for onshore-offshore seismic profiling of continental margins; examples from BASIX: American Geophysical Union Eos, Transactions, v. 74, no. 43, Supplement, p. 445. Other_Citation_Details: Brocher, Thomas M., McCarthy, Jill, and Holbrook, W. Steven, 1996, Imaging the transform plate boundary in the San Francisco Bay area, California: Geological Society of America Abstracts with Programs, v. 28, no. 7, p. 216. Other_Citation_Details: Brocher, Thomas M., and Moses, Michael J., 1993, Onshore-offshore wide-angle seismic recordings of the San Francisco Bay Area Seismic Imaging Experiment (BASIX): the five-day recorder data: U.S. Geological Survey Open-File Report 93-276, 89 p. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Identified as best available version. Logical_Consistency_Report: Unspecified Completeness_Report: Start and end date/times of data >Navigation Data (l-1-91-nc.065 [GPS]) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >199109050424000 199109051215000 >199109060706000 199109061045000 >199109070901000 199109071300000 >199109080518000 199109080644000 >199109090212000 199109091227000 >199109110250000 199109111017000 >199109120350000 199109121048000 >199109130330000 199109131100000 >199109140500000 199109141152000 >199109150609000 199109151230000 >199109160346000 199109161056000 >199109170518000 199109171217000 >199109180512000 199109181030000 >199109190303000 199109191115000 >199109191314000 199109200430000 >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >Seismic Shots Data (l-1-91-nc.420_065) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >199109050424184 199109050730410 >199109050913255 199109051214589 >199109060706127 199109061044551 >199109070901225 199109071259474 >199109080518245 199109080654360 >199109090212391 199109090559472 >199109090903448 199109091227114 >199109110250247 199109110620477 >199109110705356 199109111016461 >199109120447460 199109120730020 >199109120752227 199109121047402 >199109130330230 199109130533397 >199109130557040 199109130721517 >199109130801203 199109131059560 >199109140500268 199109140808366 >199109140832265 199109141152002 >199109150609210 199109150953014 >199109151015190 199109151230044 >199109160452556 199109161053000 >199109170518255 199109170823304 >199109170845549 199109171118085 >199109171132588 199109171216568 >199109180512284 199109180711429 >199109180735092 199109180832483 >199109180846316 199109181029435 >199109190303339 199109190653393 >199109190717475 199109191114562 >199109191313384 199109191911492 >199109191937147 199109192047576 >199109192101052 199109200429333 >YYYYMMDDHHMMSST YYYYMMDDHHMMSST Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Unspecified Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Unspecified Lineage: Process_Step: Process_Description: Navigation Data >Converted to time format with year at start. > >03/20/92 MHAMER PMG$PROC:[L191NC.LEE_NAV.LINES]L191NC_GOOD_DATA_NAD27.053;7 >ISDMNL$DUA14:[PROGRAMS.][EDIT]MERGEIT.EXE; >Integrated navigation (SINS) data >Metamuciled to create 1 minute even navigation > >Input was... >03/20/92 MHAMER PMG$PROC:[L191NC.LEE_NAV.LINES]L191NC_GOOD_DATA_NAD27.META;1 >ISDMNL$DUA14:[PROGRAMS.][DSMPL]METAMUCIL.EXE; > Process_Date: 19960119 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Contact_Person: Clint Steele Contact_Position: Data Acquisition, Processing, and Storage (DAPS) Group Leader Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5055 Contact_Facsimile_Telephone: (650) 329-5190 Contact_Electronic_Mail_Address: csteele@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: San Francisco Bay Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point 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: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 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 with Time Stamp Entity_and_Attribute_Detail_Citation: Global positioning system (GPS) data >Mnemonic: (Year, Day, Hour, Min, Sec, Tenths, Latitude, Longitude) >FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f9.5, t26, f10.5) >C format: (%4.4i%3.3i3%2.2i%1.1i %9.5f %10.5f\\n) >Naming: .060 Overview_Description: Entity_and_Attribute_Overview: Seismic Shots with Time Stamp Entity_and_Attribute_Detail_Citation: Edited seismic shot point data >Mnemonic: (Year, Day, Hour, Min, Sec, Tenths, Line, Shot) >FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, a5, t22, i5) >C format: (%4.4i%3.3i3%2.2i%1.1i %5s %5i\\n) >Naming: .420 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Contact_Person: Clint Steele Contact_Position: Data Acquisition, Processing, and Storage (DAPS) Group Leader Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5055 Contact_Facsimile_Telephone: (650) 329-5190 Contact_Electronic_Mail_Address: csteele@usgs.gov Resource_Description: Downloadable Data L-1-91-NC data set Distribution_Liability: Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. This information is not intended for navigational purposes. Any use of trade, firm, or product 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: ASCII File_Decompression_Technique: No compression applied Transfer_Size: 0.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://walrus.wr.usgs.gov/infobank/l/l191nc/html/l-1-91-nc.nav.html Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: No compression applied Transfer_Size: 0.6 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://walrus.wr.usgs.gov/infobank/l/l191nc/html/l-1-91-nc.seis.html Fees: None Metadata_Reference_Information: Metadata_Date: 20081216 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) Contact_Person: Clint Steele Contact_Position: Data Acquisition, Processing, and Storage (DAPS) Group Leader Contact_Address: Address_Type: mailing and physical address Address: USGS, MailStop 999, 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025-3561 Country: USA Contact_Voice_Telephone: (650) 329-5055 Contact_Facsimile_Telephone: (650) 329-5190 Contact_Electronic_Mail_Address: csteele@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: Version 1.0 (19940608) Metadata_Time_Convention: universal time Metadata_Access_Constraints: none Metadata_Use_Constraints: none