Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Seismograph Network station locations

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Frequently anticipated questions:


What does this data set describe?

Title:
Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Seismograph Network station locations
Abstract:
This cover contains station locations of the New Madrid Seismic Network within the study boundary. The network is a cooperative project of Saint Louis University and Memphis State University. Operation of the network has been continuous since June 1975, but operators have changed the network configuration throughout that time period. The start and stop dates in the point attribute file are not complete, but are included because they are useful for some of the stations.
  1. How might this data set be cited?
    Rhea, Susan, 1997, Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Seismograph Network station locations: U.S. Geological Survey Open-File Report 97-0681, U.S. Geological Survey, Denver, CO.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -99.14620209
    East_Bounding_Coordinate: -80.42500305
    North_Bounding_Coordinate: 43.03329849
    South_Bounding_Coordinate: 33.89199829
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1975
    Ending_Date: 1995
    Currentness_Reference:
    complete as supplied by Saint Louis Seismic Observatory staff
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (15)
      • String (0)
      • GT-polygon composed of chains (0)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is Unknown.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    EQKSTA.PAT
    locations of seismometers in the New Madrid Seismic Network (Source: St. Louis University)
    LONG
    longitude of station location in degrees W
    Range of values
    Minimum:-88.9090
    Maximum:-87.2760
    LAT
    latitude of station location in degrees N
    Range of values
    Minimum:33.6640
    Maximum:38.5397
    STA
    Station name abbreviated as a 4 letter code (Source: Arbitrary values assigned by author)
    ValueDefinition
    BPIL 
    CIRL 
    CSIL 
    FMKY 
    GOIL 
    LLKY 
    LOKY 
    MOKY 
    NHIL 
    PAKY 
    SMKY 
    SPIN 
    WCK 
    WDIN 
    WSIL 
    START
    date station started operating, YYMMDD
    ValueDefinition
    0date not available
    Range of values
    Minimum:780905
    Maximum:901101
    STOP
    date station stopped operating, YYMMDD
    ValueDefinition
    0date not available
    999999station operational at publication date
    Range of values
    Minimum:870928

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Rhea, Susan
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact

Why was the data set created?

The data was generated to help in understanding the seismotectonic hazards in the vicinity of the lower Wabash Valley. This data complements similar data collected in the vicinity of New Madrid, MO US Geological Survey Open-File Report 95-0574, available at http://pubs.usgs.gov/of/1995/0574/

How was the data set created?

  1. From what previous works were the data drawn?
    (source 1 of 1)
    Hermann, Robert and Whittington, Melanie, annual, Central Mississippi Valley Earthquake Bulletin: Saint Louis University, St. Louis, MO.

    Type_of_Source_Media: electronic file transfer
  2. How were the data generated, processed, and modified?
    Date: 01-Jun-1992 (process 1 of 2)
    Digital listing received via email and coverted to arc/info coverage.
    Date: 06-May-1998 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact
  3. What similar or related data should the user be aware of?
    Rhea, Susan, and Wheeler, R.L., 1996, Map showing seismicity in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky: U.S. Geological Survey Miscellaneous Investigations Series Map I-2583-A, U.S. Geological Survey, Denver, CO.


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 observations, including topology?
    Point features 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: none
  1. Who distributes the data set? (Distributor 1 of 1)
    Susan Rhea
    US Geological Survey
    Geophysicist
    USGS Mail Stop 966
    Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: Email is the best way to make contact.
  2. What's the catalog number I need to order this data set? USGS Open-File Report 97-0681
  3. What legal disclaimers am I supposed to read?
    This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    ARC/INFO version 7.0.3 or later or ArcView 3.0 or later

Who wrote the metadata?

Dates:
Last modified: 10-Jun-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/eqksta.faq.html>
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