Cyclic population dynamics are of central interest in ecology. Reliably identifying and quantifying the cyclicity of populations is valuable for the understanding of regulatory mechanisms and their variability across spatiotemporal scales. Cyclicity can be detected using periodogram analysis of time series. ...
Lacustrine sedimentation is very sensitive to climate changes and its cyclicity analysis allows a better quantitation of the time of sedimentation than other methods. Climate and tectonic influence on sedimentation in a synrift basin is interpreted from the spectral analysis of a 49-m-thick series, ...
3.3 Time series analysis The geochemical parameters obtained from the micro-XRF analysis were de-trended using the Past software (Hammer et al., 2001). The Redfit software was then used to perform a spectral analysis, which was based on Fourier transform of the preprocessed data (Schulz and...
Most of the time, the temporal series representing channel evolution shows a periodic/cyclic structure, and the rising limb (reaction) and the falling limb (resilience) are symmetric, without a plateau or Some implications of the Holling's paradigm shift Ecological resilience provides a thinking fra...
Cyclic population dynamics are of central interest in ecology. Reliably identifying and quantifying the cyclicity of populations is valuable for the understanding of regulatory mechanisms and their variability across spatiotemporal scales. Cyclicity can be detected using periodogram analysis of time series. ...
To identify these effects and their modes of variability in radon progeny time series, we have applied singular spectrum analysis (SSA). We analyzed hourly measurements of radon progeny for a 6-month period acquired from a 10-m-deep borehole at the Multi-Parametric Geophysical Observatory at G...
Time-series analysis of the Ooshbas SUC stacking patterns revealed the presence of Cambrian precessional periodicities, registering three out of four characteristic precessional "bundling" frequencies with > 90% confidence. That suggests that the depositional cyclicity recorded in the shallow marine ...
D'ARGENIO, B., FISCHER, A.G., RICHTER, G.M., LONGO, G., PELOSI, N., MOLISSO, F., AND DUARTE MORAIS, M.L., 1998, Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared: Earth and Planetary Science Letters, v. 160, p. 147-161....
stream discharge time series from four physiographic provinces in Georgia has revealed clear and statistically significant cycles in water-year discharge (October to September) over the period 1938 to 1994 at 15 to 17 and 5 to 6 years in all 10 series, and at 8 to 9 years in 9 series. ...
Accessing the cyclicity and persistence of geological records with time series analysis deepens our understanding of Earth's long‐term evolution. In this study, time series from recent global zircon U‐Pb age and δ18O databases are analyzed using wavelet transform from a fractal pers...