Title: Characteristic Periodic Variations of Surface Geothermal Features: A study of springs and geysers using wavelet and Fourier analysis, and system dynamics modelling
Publisher: VDM Verlag
Publication Date: 2009
Language: English
ISBN 10: 3639148665
ISBN 13: 9783639148664
Binding: Soft cover
Condition: New

About this title

Synopsis

This study aims to identify and interpret characteristic periodic variations in surface features by analyzing measurements of water level, conductivity, temperature, rainfall and barometric pressure data. The measurements are filtered using an adaptive wavelet based filter to extract the influence of earth and gravity tides, rainfall, and barometric pressure. Fourier analysis is used to further examine the content of the extracted signals. A system dynamics model of a spring is formulated to demonstrate fundamental heat and mass transfer. This study aims to provide an understanding of the effects of periodic forcing functions on geothermal features based on high accuracy measurements taken at high sampling rates. Once the amplitude and frequency of any forcing functions have been identified, these can be monitored to minimise the time to identify and quantify any changes in reservoir characteristics.

About the Author

Associate Professor Dr Jonathan Leaver works at Unitec Institute of Technology, Auckland, New Zealand. Dr Leaver was formerly Chief Petroleum and Geothermal Inspector for the Ministry of Commerce. He holds a BE(Hons)(Civil), and a PhD (Mech) from the University of Auckland and an MS(Petroleum) from Stanford University.

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