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A Primer on Fourier Analysis for the Geosciences (PDF eBook)

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A PRIMER ON FOURIER ANALYSIS FOR THE GEOSCIENCES (PDF EBOOK)

EBOOK by Crockett, Robin;
ISBN
9781108676137
IMPRINT
CAMBRIDGE UNIVERSITY PRESS
 
 
EDITION
PUBLISHER
CAMBRIDGE UNIVERSITY PRESS
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FORMAT
EBOOK
PAGES
188 pages
PUBLICATION DATE
14 FEB 2019

DESCRIPTION

Time-series analysis is used to identify and quantify periodic features in datasets and has many applications across the geosciences, from analysing weather data, to solid-Earth geophysical modelling. This intuitive introduction provides a practical 'how-to' guide to basic Fourier theory, with a particular focus on Earth system applications. The book starts with a discussion of statistical correlation, before introducing Fourier series and building to the fast Fourier transform (FFT) and related periodogram techniques. The theory is illustrated with numerous worked examples using R datasets, from Milankovitch orbital-forcing cycles to tidal harmonics and exoplanet orbital periods. These examples highlight the key concepts and encourage readers to investigate more advanced time-series techniques. The book concludes with a consideration of statistical effect size and significance. This useful book is ideal for graduate students and researchers in the Earth system sciences who are looking for an accessible introduction to time-series analysis.

CONTENTS

Preface; Acknowledgments; 1. What is Fourier analysis; 2. Covariance-based approaches; 3. Fourier series; 4. Fourier transforms; 5. Using the FFT to identify periodic features in time-series; 6. constraints on the FFT; 7. Stationarity and spectrograms; 8. Noise in time-series; 9. Periodograms and significance; Appendix A. DFT matrices and symmetries; Appendix B. Simple spectrogram code; Further reading and online resources; References; Index.