CNTR10M - 10 meter bathymetric contours of the Channel Islands National Marine Sanctuary and Santa Barbara Bay. (UTM 10N, NAD83)

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Frequently anticipated questions:


What does this data set describe?

Title:
CNTR10M - 10 meter bathymetric contours of the Channel Islands National Marine Sanctuary and Santa Barbara Bay. (UTM 10N, NAD83)
Abstract:
Data layer containing 10 meter bathymetric contours for the Channel Islands National Marine Sanctuary and Santa Barbara Bay. Data are derived from 1:250,000-scale National Oceanic and Atmospheric Administration (NOAA) charts and Monterey Bay Aquarium Research Institute (MBARI), Santa Barbara Bay Multibeam Data
  1. How might this data set be cited?
    Cochrane, Guy R., 2002, CNTR10M - 10 meter bathymetric contours of the Channel Islands National Marine Sanctuary and Santa Barbara Bay. (UTM 10N, NAD83): Open-File Report 2005-1170, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Santa Cruz, CA.

    Online Links:

    This is part of the following larger work.

    Cochrane, Guy R., Conrad, James E., Reid, Jane A., Fangman, Sarah, and Golden, Nadine, 2005, Nearshore Benthic Habitat GIS for the Channel Islands National Marine Sanctuary and Southern California State Fisheries Reserves, Volume II Edition: 1.0: Open-File Report 2005-1170, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -120.99700165
    East_Bounding_Coordinate: -118.7328186
    North_Bounding_Coordinate: 34.74788284
    South_Bounding_Coordinate: 33.73612976
  3. What does it look like?
    http://pubs.usgs.gov/of/2005/1170/images/cntr10m.jpg (JPEG)
    Image showing extent and coverage of 10 meter contours for the project area.
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2002
    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 (13293)
    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 .000512
      Ordinates (y-coordinates) are specified to the nearest .000512
      Planar coordinates are specified in meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic ReferenceSystem 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.2572222.
  7. How does the data set describe geographic features?
    cntr10m
    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 numeric identifier assigned automatically by software during processing (Source: USGS)
    Range of values
    Minimum:1807
    Maximum:48864
    Units:integer count
    Resolution:1
    CONTOUR
    depth in meters as a negative number (Source: USGS)
    Range of values
    Minimum:-600
    Maximum:-10
    Units:meters
    Resolution:10
    Entity_and_Attribute_Overview:
    FID Alias: FID Data type: OID Width: 4 Precision: 0 Scale: 0 Definition: Internal feature number. Definition Source: ESRI
    Shape Alias: Shape Data type: Geometry Width: 0 Precision: 0 Scale: 0 Definition: Feature geometry. Definition Source: ESRI ID Alias: ID Data type: Number Width: 10
    CONTOUR Alias: CONTOUR Data type: Number Width: 14
    CONTOUR contains the depth in meters as a negative number
    Entity_and_Attribute_Detail_Citation: none

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Guy R. Cochrane
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Guy R. Cochrane
    U.S. Geological Survey
    Geophysicist
    400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@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.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 2001 (process 1 of 3)
    Original grid file and metadata received by Guy Cochrane from Ben Waltenberg (ben.waltenberg@noaa.gov) Channel Islands NMS.
    Date: 01-Nov-2001 (process 2 of 3)
    Grid modified by Florence Wong Replaced anomalous -8548 depth in window no deeper than 4000 m tempig = int (cibattopo20g) tempi2g = con (tempig lt -4000, tempig) temppoly = gridpoly (tempig) /* .bnd: 705096 3852751 705296 3853051 -8400-m pit near 705204 3852899 in the midst of 80-90 m depths setwindow * cibattopo20g /* specify window around pit /* replace deep values with unique high value patch = con (cibattopo20g gt -90, cibattopo20g,3000) /* cover up bad spot in original grid newg = merge (patch,cibattopo20g)/* convert patch to nodata ci2g = con (newg lt 3000, newg) MIN = -3675.782 MAX = 2681.828 MEAN = -297.854 STDV = 988.696
    Date: 2002 (process 3 of 3)
    Grid contoured in arc/info to 10m intervals. Contours with depth greater than 500m deleted.
  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?
    unknown
  2. How accurate are the geographic locations?
    unknown
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    unknown
  5. How consistent are the relationships among the observations, including topology?
    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:
These data are NOT to be used for navigation purposes. Mariners should refer to the appropriate nautical chart.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Guy Cochrane
    U.S. Geological Survey
    Geophysicst
    400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
    These data are NOT to be used for navigation purposes. Mariners should refer to the appropriate nautical chart.
    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBase format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). in format SHP (version 3.3) ESRI Shapefile Format Size: 87.462
      Network links: http://pubs.usgs.gov/of/2005/1170/basemaps/cntr10m.tgz
      http://pubs.usgs.gov/of/2005/1170/catalog.html
    • Cost to order the data: None

  5. What hardware or software do I need in order to use the data set?
    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of the importing data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 09-Aug-2002
Last Reviewed: 09-Aug-2002
Metadata author:
Guy R. Cochrane
U.S. Geological Survey
Geophysicist
400 Natural Bridges Drive
Santa Cruz, CA
USA

(831) 427-4754 (voice)
(831) 427-4748 (FAX)
gcochrane@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") (FGDC-STD-001-1998)
Metadata extensions used:

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/socal/cinms/cntr10m.shp.faq.html>
Generated by mp version 2.9.49 on Fri Sep 13 15:01:16 2019