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Catchments as space-time filters – a joint spatio-temporal geostatistical analysis of runoff and precipitation
space-time filters runoff precipitation
2009/5/15
In this paper catchments are conceptualised as linear space-time filters. Catchment area A is interpreted as the spatial support and the catchment response time T is interpreted as the temporal suppor...
Low-Pass Filters to Suppress Inertial and Tidal Frequencies
Low-Pass Tidal Frequencies Suppress Inertial
2009/2/5
A systematic way is given to design digital filters which allow clear separation of signals with periods of a few days from noise of higher frequency, particularly tidal and inertial. Several examples...
Automatic estimation of optimal autoregressive filters for the analysis of volcanic seismic activity
Automatic estimation optimal autoregressive filters volcanic seismic activity
2009/12/30
Long-period (LP) events observed on volcanoes provide important information for volcano monitoring and for studying the physical processes in magmatic and hydrothermal systems. Of all the methods used...
General Solutions of Matrix Extension Associated with Multiple Channel Biorthogonal Wavelet Filters
matrix extension refinement equation biorthogonal wavelet
2007/12/11
This paper is concerned with seeking the general solutions of matrix equation $\widetilde{M}(\xi)M^*(\xi)=I_s$ for the construction of multiple channel biorthogonal wavelets, provided that some specia...
Wavelet filters and infinite-dimensional unitary groups
Wavelet filters infinite-dimensional unitary groups
2010/11/1
In this paper, we study wavelet filters and their dependence on two numbers, the scale N and the genus g. We show that the wavelet filters, in the quadrature mirror case, have a harmonic analysis whi...