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Environmental Management

, Volume 3, Issue 3, pp 283–288 | Cite as

Time series in M dimensions: The one-dimensional case: Pollution in the Chicago Sanitary and Ship Canal

  • Don B. Campbell
  • David J. Schaeffer
Research

Abstract

A nonstationary time-series model is used to examine the changes occurring at sampling stations on the Chicago Sanitary and Ship Canal. Using data from upstream sampling sites, downstream levels of dissolved oxygen, total dissolved solids, nitrates and nitrites, and ammonia are accurately predicted. The method is simple, insensitive to extreme values, and responsive to changes in the system.

Key words

Nonstationary time series Pollutants Dissolved oxygen Total dissolved solids Nitrates and nitrites Ammonia M-Dimensional time series Chicago sanitary and ship canal Sampling Monitoring 

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Literature cited

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Copyright information

© Springer-Verlag New York, Inc 1979

Authors and Affiliations

  • Don B. Campbell
    • 1
  • David J. Schaeffer
    • 2
  1. 1.Department of MathematicsWestern Illinois UniversityMacomb
  2. 2.Illinois Environmental Protection AgencySpringfield

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