CCALBATC - bathymetric contours for the central California region between Point Arena and Point Sur.

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Frequently anticipated questions:

What does this data set describe?

Title:
CCALBATC - bathymetric contours for the central California region between Point Arena and Point Sur.
Abstract:
CCALBATC consists of bathymetric contours at 10-m and 50-m intervals for the area offshore of central California between Point Arena to the north and Point Sur to the south. The lines were digitized from 1:250,000-scale NOAA charts. This is one of a collection of digital files of a geographic information system of spatially referenced data related to the USGS Coastal and Marine Geology Program Monterey Bay National Marine Sanctuary Project (see this and other older Monterey Bay USGS works archived at https://archive.usgs.gov/archive/sites/walrus.wr.usgs.gov/monterey/index.html.
Supplemental_Information:
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 Esri format, this metadata file may include some Esri-specific terminology.
  1. How might this data set be cited?
    Chin, John, McHendrie, A. Graig, Madison, Carol, and Wong, Florence L., 20010327, CCALBATC - bathymetric contours for the central California region between Point Arena and Point Sur.: Open-File Report 01-179, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Menlo Park, CA.

    Online Links:

    This is part of the following larger work.

    Wong, Florence L., and Eittreim, Stephen E., 2001, Continental Shelf GIS for the Monterey Bay National Marine Sanctuary: Open-File Report 01-179, U.S. Geological Survey, Coastal and Marine Geology Program, Western Region Coastal and Marine Geology, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -125.194828
    East_Bounding_Coordinate: -121.445713
    North_Bounding_Coordinate: 39.019944
    South_Bounding_Coordinate: 35.981372
  3. What does it look like?
    https://pubs.usgs.gov/of/2001/0179/images/batccal.gif (GIF)
    location map of ccalbatc
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1974
    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):
      • Entity point (783)
      • Complete chain (1899)
      • Point (4)
    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: -123.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000512
      Ordinates (y-coordinates) are specified to the nearest 0.000512
      Planar coordinates are specified in meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
  7. How does the data set describe geographic features?
    ccalbatc
    ArcInfo interchange file containing contour information. (Source: Producer defined)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    FNODE#
    Internal node number for the beginning of an arc (from-node). (Source: ESRI) Whole numbers that are automatically generated.
    TNODE#
    Internal node number for the end of an arc (to-node). (Source: ESRI) Whole numbers that are automatically generated.
    LPOLY#
    Internal node number for the left polygon. (Source: ESRI) Whole numbers that are automatically generated.
    RPOLY#
    Internal node number for the right polygon. (Source: ESRI) Whole numbers that are automatically generated.
    LENGTH
    Length of feature in internal units. (Source: ESRI)
    Range of values
    Minimum:13.332561
    Maximum:200822.80292
    Units:meters
    CCALBATC#
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    CCALBATC-ID
    User-defined feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    LTYPE
    Character string identifying contour as elevation or bathymetry. (Source: USGS)
    ValueDefinition
    bathymetrycontour identified as bathymetry
    INCREM
    Increment value assigned to contour interval (Source: USGS)
    Range of values
    Minimum:10
    Maximum:1000
    DEPTH
    Depth value assigned to contour interval (Source: USGS)
    Range of values
    Minimum:-4000
    Maximum:-10
    Units:meters
    Resolution:10
    SYMBOL
    Internal feature number to designate symbology. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Entity_and_Attribute_Overview:
    CCALBATC is an ArcInfo data set that consists of bathymetric contours whose attributes are described in the database table.
    Entity_and_Attribute_Detail_Citation: Producer

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • John Chin
    • A. Graig McHendrie
    • Carol Madison
    • Florence L. Wong
  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. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information about the shallower areas of the Monterey Bay National Marine Sanctuary.

How was the data set created?

  1. From what previous works were the data drawn?
    NOAA (1974a) (source 1 of 2)
    National Oceanic and Atmospheric Administration (NOAA), 1974, Bathymetric map, vicinity Pt. Sur to Pt. Reyes: NOAA NOS 1307N-11B.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: bathymetric contours between lat. 36 N and 38 N
    NOAA (1974b) (source 2 of 2)
    National Oceanic and Atmospheric Administration (NOAA), 1974, Bathymetric map, Pt. Reyes to Tolo Bank: NOAA NOS 1307N-18B.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: bathymetric contours between lat. 38 N and 39 N
  2. How were the data generated, processed, and modified?
    Date: 1990 (process 1 of 6)
    John Chin and Graig McHendrie scanned and edited the 1:250,000-scale NOAA charts (1974a, 1974b) for the region.
    Date: 1994 (process 2 of 6)
    F.L. Wong converted scanned files to ArcInfo coverage.
    Date: 27-Mar-2001 (process 3 of 6)
    First draft of metadata created by F.L. Wong using a modified version of FGDCMETA.AML on ARC/INFO data set CCALBATC
    Date: 2003 (process 4 of 6)
    F.L. Wong corrected mistagged lines.
    Date: 03-Dec-2019 (process 5 of 6)
    Edits were made to bring the metadata up to current PCMSC standards including standardizing authors' names, adding a doi# link, correcting typos, refining keywords, correcting missing and incomplete tags, and using current access and distribution liability statements. Point of Contact and Metadata Contact information sections were changed to static PCMSC contact information. No data were changed. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 19-Oct-2020 (process 6 of 6)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@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?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Incomplete in deeper water parts.
  5. How consistent are the relationships among the observations, including topology?
    Polygon and chain-node topology 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)
    United States Geological Survey (USGS)
    Coastal and Marine Geology (CMG)
    Menlo Park, CA
    USA

    (650) 329-5327 (voice)
  2. What's the catalog number I need to order this data set? Downloadable Data
  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?

Who wrote the metadata?

Dates:
Last modified: 19-Oct-2020
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/OFR/OFR_01-179/ccalbatc.e00.faq.html>
Generated by mp version 2.9.50 on Wed Oct 13 09:08:57 2021