Florence L. Wong Eleyne L. Phillips Samuel Y. Johnson Ray W. Sliter 2012 version 1 map Open-File Report 2012-1161 Menlo Park, California U.S. Geological Survey http://pubs.usgs.gov/of/2012/1161 https://doi.org/10.3133/ofr20121161 Florence L. Wong Eleyne L. Phillips Samuel Y. Johnson Ray W. Sliter 2012 version 1 map Open-File Report 2012-1161 Menlo Park, California U.S. Geological Survey https://doi.org/10.3133/ofr20121161 As part of the USGS's California State Waters Mapping Project, depth to base of last glacial maximum within the 3-nautical mile limit between Gaviota and Hueneme Canyon was extracted from seismic-reflection data collected in 2007 (USGS activity (Z-3-07-SC) and 2008 (S-7-08-SC). Depths range from 7 to 568 m with a mean of 67 m and a standard deviation of 65 m. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. Additional information about the field activities from which this data set was derived are available online at https://cmgds.marine.usgs.gov/activity_info.php?fan=z307sc https://cmgds.marine.usgs.gov/activity_info.php?fan=s708sc endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. 2007 2009 ground condition Complete None planned -120.206232 -119.123028 34.492447 34.027787 USGS Metadata Identifier USGS:58d3e6b4-7538-4a99-ad6d-f4bb8272b107 USGS Thesaurus marine geology seismic reflection methods maps and atlases stratigraphic thickness geospatial datasets None coastal geology depth to last glacial maximum seismic-reflection data transgressive surface ISO 19115 Topic Category environment geoscientificInformation oceans Geographic Names Information System Port Hueneme Huememe Canyon California USA Ventura Santa Barbara Coal Oil Point Refugio Santa Barbara Channel California USA GEOnet Names Server north Pacific Ocean None. 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. This information is not intended for navigation purposes. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 US 831-427-4747 pcmsc_data@usgs.gov sbsedbsmpt.jpg map of depth to last glacial maximum points rendered by color JPEG Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 Data points are approximately 1 m apart along tracklines and 1000-2000 m apart between tracks. Point features present. All points exported from Seisworks present The chirp sonar instrument is deployed under the research vessel with about 10m of variation in position. The sparker position may vary as much as 20m from the navigation reference on the vessel. Chirp and sparker seismic-reflection data from USGS field activity Z-3-07-SC and chirp data from field activity S-7-08-SC were imported to SEISWORKS. (Ray Sliter, rsliter@usgs.gov) 2011 Seabed and depth to Last Glacial Maximum horizons digitized in Seisworks (S.Y. Johnson, sjohnson@usgs.gov) 2011 Data exported and converted with 1500m/sec velocity in water and 1600 m/sec velocity in sediment. (Ray Sliter, rsliter@usgs.gov). 2011 X, Y locations and sediment thickness value Z imported to ArcGIS format as points (Florence Wong, fwong@usgs.gov) 2011 Metadata imported. d:\TEMP\xml25E.tmp 20110609 14033400 Corrected Larger_Work section of metadata so that each author had a separate originator tag 20180717 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center Geologist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060-5792 USA (831) 460-7545 scochran@usgs.gov Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 20201019 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Edited metadata to add USGS Thesaurus keywords and perform minor edits to bring the metadata up to current PCMSC standards. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata dates to determine which metadata file is most recent. 20211021 U.S. Geological Survey Susan Cochran Geologist Mailing and Physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7545 scochran@usgs.gov Vector Entity point 924661 0.000001 0.000001 Decimal degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 sbsedbsmpt depth to base of last glacial maximum at point locations this study FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. BSM2_ID line number in file exported from Seisworks ESRI Coordinates defining the features. X_UTM1184 X-coordinate in UTM zone 11 coordinates standard usage Coordinates defining the features. Y_UTM1184 Y-coordinate in UTM zone 11 coordinates standard usage Coordinates defining the features. BSM_M Depth to base of last glacial maximum this study depth below sea level LONG84 x-coordinate (longitude) in geographic coordinates, WGS84 standard usage Coordinates defining the features. LAT84 Y-coordinate (latitude) in geographic coordinates, WGS84 standard usage Coordinates defining the features. United States Geological Survey (USGS) Coastal and Marine Geology (CMG) Florence L. Wong Geologist, GIS Coordinator mailing and physical address

USGS, MailStop 999, 345 Middlefield Road

Menlo Park CA 94025-3561 USA (650) 329-5327 (650) 329-5190 fwong@usgs.gov Downloadable Data. USGS OF 2012-1161 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. shapefile 9.3.1 ArcGIS shapefile sediment thickness and coordinates windows winzip 38 http://pubs.usgs.gov/of/2012/1161 https://doi.org/10.3133/ofr20121161 none 20211021 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 US 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time