Oceanographic M log sheets: Bottom sediment data from project OPR-411

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  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?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   U.S. Coast and Geodetic Survey, Unpublished material, Oceanographic M log sheets: Bottom sediment data from project OPR-411.

   Online Links:

   • Digital data and downloadable .pdf available at National Geophysical Data Center (NGDC): <http://oas.ngdc.noaa.gov/mgg/plsql/geolin.set_expand?v_mggid=03995001>

   Other_Citation_Details:

   29 M sheets of bottom sediment data, reference DA-45-70 forwarded to Dr. J.W. Pierce, Division of Sedimentology, Smithsonian Institution, Washington, D.C., 20560 from Ray E. Moses, CDR USESSA, Commanding Officer, USC & GSS Davidson (CSS-31), Fleet Post Office, Seattle, WA, 98799 on May 7, 1970; Cruises DA-1, DA-2, DA-10-1-68, DA-10-2-70, DA-10-3-70, DA-20-1-68, DA-40-1-68, DA-40-1-70, DA-80-1-69, DA-80-2-69, DA-80-3-69, DA-80-4-69

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -119.847

   East_Bounding_Coordinate: -117.134

   North_Bounding_Coordinate: 33.022

   South_Bounding_Coordinate: 32.248

3. What does it look like?

   MGG_03995001 (JPG)

   Sample distribution in GIS with coastline and rough bathymetry for reference

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 1968

   Ending_Date: 1970

   Currentness_Reference: 1970

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: Paper

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):

      • Point (325)

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00167. Longitudes are given to the nearest 0.00167. Latitude and longitude values are specified in Decimal degrees.

7. How does the data set describe geographic features?

   Point

   SDTS point (Source: Source report)

   Sample number

   Sample number (Source: Source report)

   Alpha numeric number based on project number and core information

   Water depth

   Depth of water at sample site (Source: Source report)

   Range of values
   Minimum:	2
   Maximum:	1728
   Units:	Meters
   Resolution:	1.0

   Field description

   Lithologic description of sample (Source: Source report)

   Lithologic description including color.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • U.S. Coast and Geodetic Survey

2. Who also contributed to the data set?

   NGDC archives the data; data digitized for usSEABED by Jane Reid (USGS); formatting corrections Jane Reid (USGS) and Chris Jenkins (University of Colorado)

3. To whom should users address questions about the data?
   National Geophysical Data Center (NGDC)
   c/o Robin R. Warnken
   E/GC3 325 Broadway
   Boulder, CO 80305-3328
   

   303-497-6338 (voice)
   Robin.R.Warnken@noaa.gov
   

Why was the data set created?

No specific purpose noted in report

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: Unknown (process 1 of 1)

   No process information given in report.

   Person who carried out this activity:
   

   National Geophysical Data Center (NGDC)
   c/o Robin R. Warnken
   E/GC3 325 Broadway
   Boulder, CO 80305-3328
   

   303-497-6338 (voice)
   Robin.R.Warnken@noaa.gov
   

   Data sources produced in this process:

   • OPR-411; MGG 03995001

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?

   No estimate made for the accuracy of the data in the original report. Data digitized by the USGS and partners were visually compared to the source data, and corrected. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.

2. How accurate are the geographic locations?

   Navigational techniques not recorded in report; latitudes and longitudes given in degrees, minutes, minute-tenths.

3. How accurate are the heights or depths?

   Water depth determination technique not noted in report. Water depths given in meters.

4. Where are the gaps in the data? What is missing?

   All data in scanned report are included.

5. How consistent are the relationships among the observations, including topology?

   Data fall within normal ranges for the given parameters.

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:

Cite U.S. Naval Oceanographic Office and NGDC as originators of the data

1. Who distributes the data set? (Distributor 1 of 1)
   National Geophysical Data Center (NGDC)
   c/o Robin R. Warnken
   E/GC3 325 Broadway
   Boulder, CO 80305-3328
   

   303-497-6338 (voice)
   Robin.R.Warnken@noaa.gov
   

2. What's the catalog number I need to order this data set?

   MGGID 03995001

3. What legal disclaimers am I supposed to read?

   Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies, limitations of the statistical data, and digitizing errors.

4. How can I download or order the data?
   • Availability in non-digital form:

     Paper copies of the data are available from NGDC

   • Cost to order the data:

     Data available for free in .pdf form; small fee may be charged for paper copy from NGDC

5. What hardware or software do I need in order to use the data set?

   None

Who wrote the metadata?

Dates:

Last modified: 2005

Metadata author:

U.S. Geological Survey
c/o Jane A. Reid
Geologist
400 Natural Bridges Drive
Santa Cruz, CA 95060

831-427-4727 (voice)
jareid@usgs.gov

Contact_Instructions: Email preferred

Metadata standard:

CSDGM Version 2 (FGDC-STD-001-1998)