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Nonstationarities in Hydrologic and Environmental Time Series

  • Book
  • © 2003

Overview

Authors:
  1. A. Ramachandra Rao

    1. School of Civil Engineering, Purdue University, West Lafayette, USA

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  2. Khaled H. Hamed

    1. Irrigation and Hydraulics Department, Faculty of Engineering, Cairo University, Giza, Egypt

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    You can also search for this author in PubMed   Google Scholar

  3. Huey-Long Chen

    1. Department of Environmental Engineering, Lan-Yang Institute of Technology, Touchen, Ilan, Taiwan

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    You can also search for this author in PubMed   Google Scholar

Part of the book series: Water Science and Technology Library (WSTL, volume 45)

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Table of contents (12 chapters)

  1. Front Matter

    Pages i-xxvii
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  2. Introduction

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 1-3

  3. Data Used in the Book

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 4-26

  4. Time Domain Analysis

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 27-55

  5. Frequency Domain Analysis

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 56-114

  6. Time-Frequency Analysis

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 115-159

  7. Time-Scale Analysis

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 160-212

  8. Segmentation of Non-Stationary Time Series

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 213-252

  9. Estimation of Turbulent Kinetic Energy Dissipation

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 253-276

  10. Segmentation of Observed Data

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 277-311

  11. Linearity and Gaussianity Analysis

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 312-319

  12. Bayesian Detection of Shifts in Hydrologic Time Series

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 320-346

  13. References

    • A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen
    Pages 347-357

  14. Back Matter

    Pages 359-365
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Keywords

About this book

Conventionally, time series have been studied either in the time domain or the frequency domain. The representation of a signal in the time domain is localized in time, i.e . the value of the signal at each instant in time is well defined . However, the time representation of a signal is poorly localized in frequency , i.e. little information about the frequency content of the signal at a certain frequency can be known by looking at the signal in the time domain . On the other hand, the representation of a signal in the frequency domain is well localized in frequency, but is poorly localized in time, and as a consequence it is impossible to tell when certain events occurred in time. In studying stationary or conditionally stationary processes with mixed spectra , the separate use of time domain and frequency domain analyses is sufficient to reveal the structure of the process . Results discussed in the previous chapters suggest that the time series analyzed in this book are conditionally stationary processes with mixed spectra. Additionally, there is some indication of nonstationarity, especially in longer time series.

Reviews

From the reviews:

"The authors consider a number of modern statistical tests of nonstationarity, including trend analysis, multitaper method and maximum entropy spectral analysis, evolutionary spectral analysis, wavelet analysis, and series segmentation through change point detection. … this book is well organized and easy to read … . A clear distinction is made between processes with discrete, continuous, and mixed spectra … . Nonstationarities in Hydrologic and Environmental Time Series addresses a number of important issues and ideas … ." (Adam Monahan, Bulletin of the American Meteorological Society, March, 2005)

Authors and Affiliations

  • School of Civil Engineering, Purdue University, West Lafayette, USA

    A. Ramachandra Rao

  • Irrigation and Hydraulics Department, Faculty of Engineering, Cairo University, Giza, Egypt

    Khaled H. Hamed

  • Department of Environmental Engineering, Lan-Yang Institute of Technology, Touchen, Ilan, Taiwan

    Huey-Long Chen

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