Transgressive Contours--Pigeon Point to Monterey, California

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Frequently anticipated questions:


What does this data set describe?

Title: Transgressive Contours--Pigeon Point to Monterey, California
Abstract:
This part of DS 781 presents data for the transgressive contours for the depth-to-transition map of the Pigeon Point to Monterey, California, map region. The vector file is included in T "TransgressiveContours_PigeonPointToMonterey.zip," which is accessible from https://doi.org/10.5066/F7N29V0Z.
As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the limit of California’s State Waters between Pigeon Point and southern Monterey Bay was generated from seismic-reflection data collected in 2009 and 2010 (USGS activities (S-15-10-NC, S-N1-09-MB, and S-06-11-MB) supplemented with outcrop and geologic structure from DS 781. The resulting grid covers was subtracted from regional bathymetry to determine the depth to the transitional surface. Contours at 5-meter intervals were derived from this grid.
Supplemental_Information:
Additional information about the field activities from which this data set was derived are available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=S1510NC https://cmgds.marine.usgs.gov/fan_info.php?fan=SN109MB https://cmgds.marine.usgs.gov/fan_info.php?fan=S0611MB
Any use of trade, product, or firm names is for descriptive purposes only and does not imply 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 ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. How might this data set be cited?
    Johnson, Samuel Y., Hartwell, Stephen R., Watt, Janet T., Sliter, Ray W., and Maier, Katie L., 2015, Transgressive Contours--Pigeon Point to Monterey, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

    This is part of the following larger work.

    Golden, Nadine E., 2013, California State Waters Map Series Data Catalog: Data Series DS 781, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.482894
    East_Bounding_Coordinate: -121.806918
    North_Bounding_Coordinate: 37.234833
    South_Bounding_Coordinate: 36.588129
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/56d5df1de4b015c306f26ea5?name=TransgressiveContours_PigeonPointToMonterey.jpg&allowOpen=true (JPEG)
    Contours showing the depth-to-transition surface for the Pigeon Point to Monterey, California, map region
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 2006
    Ending_Date: 2010
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • String (503)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 10
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -117.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 50.000000
      Ordinates (y-coordinates) are specified to the nearest 50.000000
      Planar coordinates are specified in meters
      The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: NAVD88
      Depth_Resolution: 20.0
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Implicit coordinate
  7. How does the data set describe geographic features?
    Transgressive_contours
    lines of equal depth to transgressive surface (Source: standard sedimentology)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    ID
    sequential feature number (Source: this study) sequential feature numbers
    CONTOUR
    Lines of equal depth to transgressive surface (Source: this study) depth to transgressive surface using a 5 meter contour interval
    Type
    Type of contour (Source: This report)
    ValueDefinition
    IndexContour at 10m interval
    IntermediateContours at 5m interval

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Samuel Y. Johnson
    • Stephen R. Hartwell
    • Janet T. Watt
    • Ray W. Sliter
    • Katie L. Maier
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA
    US

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes.The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created?

  1. From what previous works were the data drawn?
    S-15-10-NC (source 1 of 21)
    U.S. Geological Survey, 2014, Geophysical data from USGS field activity S-15-10-NC: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Type_of_Source_Media: ASCII lat/long shot point files
    Source_Contribution:
    Digital seismic data used to interpret subsurface geologic structure
    S-06-11-MB (source 2 of 21)
    U.S. Geological Survey, 2011, Geophysical data from USGS field activity S-06-11-MB: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Type_of_Source_Media: ASCII lat/long shot point files
    Source_Contribution:
    Digital seismic data used to interpret subsurface geologic structure
    S-N1-09-MB (source 3 of 21)
    U.S. Geological Survey, 2014, Geophysical data from USGS field activity S-N1-09-MB: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Type_of_Source_Media: ASCII lat/long shot point files
    Source_Contribution:
    Digital seismic data used to interpret subsurface geologic structure
    GeoPigeonPt (source 4 of 21)
    Watt, Janet T., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Pigeon Point, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    GeoScottCrk (source 5 of 21)
    Hartwell, Stephen R., Johnson, Samuel Y., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Scott Creek, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    GeoSantaCruz (source 6 of 21)
    Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Santa Cruz, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    GeoAptos (source 7 of 21)
    Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Aptos, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    GeoMryCyn (source 8 of 21)
    Maier, Katherine L., Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Greene, H. Gary, 2016, Geology and geomorphology--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    GeoMonterey (source 9 of 21)
    Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Watt, Janet T., 2016, Geology and geomorphology—Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polygon shapefile
    Source_Contribution: used to determine seafloor outcrops
    FaultsPigeonPt (source 10 of 21)
    Watt, Janet T., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Faults--Offshore of Pigeon Point, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    FaultsScottCrk (source 11 of 21)
    Hartwell, Stephen R., Johnson, Samuel Y., and Davenport, Clifton W., 2015, Faults--Offshore of Scott Creek, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    FaultsSantaCruz (source 12 of 21)
    Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Faults--Offshore of Santa Cruz, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    FaultsAptos (source 13 of 21)
    Johnson, Samuel Y., Hartwell, Stephen R., Davenport, Clifton W., and Maier, Katherine L., 2015, Faults--Offshore of Aptos, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    FaultsMryCyn (source 14 of 21)
    Maier, Katherine L., Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Greene, H. Gary, 2016, Faults--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    FaultsMonterey (source 15 of 21)
    Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Watt, Janet T., 2016, Faults--Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: polyline shapefile
    Source_Contribution: used to interpret subsurface geologic structure
    BathyPigeonPt (source 16 of 21)
    Dartnell, Peter, and Kvitek, Rikk G., 2015, Bathymetry--Offshore of Pigeon Point, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
    BathyScottCrk (source 17 of 21)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2015, Bathymetry--Offshore of Scott Creek, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
    BathySantaCruz (source 18 of 21)
    Dartnell, Peter, Ritchie, Andrew C., and Finlayson, David P., 2015, Bathymettry--Offshore of Santa Cruz, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
    BathyAptos (source 19 of 21)
    Dartnell, Peter, Ritchie, Andrew C., and Finlayson, David P., 2015, Faults--Offshore of Aptos, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
    BathyMryCyn (source 20 of 21)
    Dartnell, Peter, Ritchie, Andrew C., Finlayson, David P., and Kvitek, Rikk G., 2015, Bathymetry--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
    BathyMonterey (source 21 of 21)
    Dartnell, Peter, and Kvitek, Rikk G., 2016, Bathymetry--Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

    Online Links:

    Type_of_Source_Media: GeoTIFF
    Source_Contribution: used to determine depth to transition
  2. How were the data generated, processed, and modified?
    Date: 2014 (process 1 of 6)
    Water bottom (seabed) and depth to base of the Last Glacial Maximum (LGM) horizons were digitized from seismic-reflection data using Seisworks software. The difference between the two horizons was exported from Seisworks for every shot point as XY coordinates (UTM Zone 10) and two-way travel time (TWT). The thickness was determined by applying a sound velocity to the TWT of 1,500 m/sec in water and 1,600 m/sec velocity in sediment, resulting in sediment thickness values. Data sources used in this process:
    • S-15-10-NC
    • S-N1-09-MB
    • S-06-11-MB
    Data sources produced in this process:
    • SedimentThicknessPoints
    Date: 2014 (process 2 of 6)
    XY locations and sediment thickness values Z were imported to ArcGIS format as points and interpolated to a preliminary surface with TopoRaster from which isopachs (thickness contours) were extracted at 2.5 m intervals. Further refinement of this sediment thickness map and the isopach shapefile (see https://doi.org/10.5066/F7N29V0Z SedimentThickness_PigeonPointToMonterey.zip and Isopachs_PigeonPointToMonterey.zip) was accomplished through several iterations of manual editing to incorporate geology and fault information following the methodology of Wong (2012; see http://pubs.usgs.gov/of/2012/1161/). Data sources used in this process:
    • GeoPigeonPt
    • GeoScottCrk
    • GeoSantaCruz
    • GeoAptos
    • GeoMryCyn
    • GeoMonterey
    • FaultsPigeonPt
    • FaultsScottCrk
    • FaultsSantaCruz
    • FaultsAptos
    • FaultsMryCyn
    • FaultsMonterey
    Data sources produced in this process:
    • SedimentThickness
    Date: 2014 (process 3 of 6)
    The depth to the base of the post-Last Glacial Maximum (LGM) unit was generated by adding the thickness data to water depths from the bathymetry data. Data sources used in this process:
    • SedimentThickness
    • BathyPigeonPt
    • BathyScottCrk
    • BathySantaCruz
    • BathyAptos
    • BathyMryCyn
    • BathyMonterey
    Data sources produced in this process:
    • DepthToTransition
    Date: 2014 (process 4 of 6)
    Contours at 5-meter intervals were created using standard Esri GIS tools. Data sources used in this process:
    • DepthToTransition
    Date: 22-Jun-2018 (process 5 of 6)
    Corrected author spelling in Larger Work section Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Geologist
    2885 Mission Street
    Santa Cruz, CA
    USA

    (831) 460-7545 (voice)
    scochran@usgs.gov
    Date: 18-Nov-2021 (process 6 of 6)
    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. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Data points are approximately 1 m apart along tracklines and 1000-2000 m apart between tracks. 50-m cell size for interpolation is better supported along track than between.
  2. How accurate are the geographic locations?
    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.
  3. How accurate are the heights or depths?
    Estimated to be approximately 1 m, along the track lines where data is well constrained, but may be much greater in areas where interpolation occurred.
  4. Where are the gaps in the data? What is missing?
    Sediment thickness data points exported from Seisworks profiling software were processed within the limit of California’s State Waters.
  5. How consistent are the relationships among the observations, including topology?
    All vector geometry and attributes present.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
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. This information is not intended for navigation purposes.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? TransgressiveContours_PigeonPointToMonterey.zip
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: The .zip file for a shapefile includes the .aux, .dbf, .shp, .shx, .sbx, and .sbn files, as well as the text (.txt) and XML (.shp.xml) versions of the metadata for the Transgressive Contours layer for Pigeon Point to Monterey, California. in format shapefile (version ArcMap (version 10.0, ESRI , 2011)) Point, line, and polygon features are in shapefile format and are projected in UTM Zone 10 coordinates, with datum WGS84. Size: 1.1
      Network links: https://www.sciencebase.gov/catalog/file/get/56d4edb8e4b015c306f17b52
      https://doi.org/10.5066/F7N29V0Z
      https://doi.org/10.3133/ds781
    • Cost to order the data: none

  5. What hardware or software do I need in order to use the data set?
    The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap shapefile.

Who wrote the metadata?

Dates:
Last modified: 18-Nov-2021
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA
US

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/SeriesReports/DS_DDS/DS_781/XMLs_on_ScienceBase/F7N29V0Z_PigeonPtToMonterey/TransgressiveContours_PigeonPointToMonterey_metadata.faq.html>
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