Increasingly, environmental scientists, palaeoceanographers and geologists are collecting quantitative records of environmental changes (time series) from sediments, ice cores, cave calcite, corals and trees. This book explains how to analyze these records, using straightforward explanations and diagrams rather than formal mathematical derivations. All the main cyclostratigraphic methods are covered, including spectral analysis, cross-spectral analysis, filtering, complex demodulation, and wavelet and singular spectrum analysis. Practical problems of time-series analysis are considered in detail. Recent research into various types of tidal and climatic cycles is summarized.