Using frequency analysis to determine wetland hydroperiod

Authors:
Lisa D. Foster;Nirjhar Shah;Mark Ross;G. S. Ladde;P. Wang
Affiliations:
Jones Edmunds and Associates, Inc., Tampa, Fl;Department of Civil and Environmental Engineering, University of South Florida, Tampa, Fl;Department of Civil and Environmental Engineering, University of South Florida, Tampa, Fl;Department of Mathematics and Statistics, University of South Florida, Tampa, Fl;Department of Geology, University of South Florida, Tampa, Fl
Venue:
Neural, Parallel & Scientific Computations - Special issue in honour of Dr. Chris P. Tsokos
Year:
2008

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Abstract

Spectral analysis of water-level time series provides invaluable insight into the periodic behavior of hydrological processes. This study analyzes wetland hydroperiod, which is commonly defined as the period of inundation and is thought to be mostly annual, using spectral analysis of observed water-level time series. The results show the water level fluctuation observed in West-Central Florida wetlands follow a predominant semi-annual (180 day) cycle, with water levels fluctuating both above and below land surface.