Computer Programs ( Spanish version)

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	Geopotential model This program allows the calculation of the geoid undulation by using of a geopotential model.
	Regional geoid models You can get free from this link geoid models developed for several regions of the world.
	Gravity data handler The Gravity Data Handler is a computer program developed to calculate free-air and Bouguer gravity anomalies and perform the conversion between different type of gravity data.
	Distance and azimuth This computer program has been developed to calculate the distance and the azimuth for two points over the earth, considering the earth like a sphere.
	Geodesic lines This computer program has been developed to calculate the geodesic lines of the revolution ellipsoid, defined by the Geodetic Reference System of 1980 (GRS80). The distance and azimuth are also computed for each geodesic.
	Time series analysis This program allows the calculation of the amplitude and phase spectrum of time series.
	Displacements, velocities and accelerations converter Computer program to perform the the conversion between time records of displacements, velocities and accelerations.
	Instrumental response Computer program to perform the instrumental correction in seismic records.
	Digital filtering: high-pass, low-pass and band-pass Computer program for digital filtering of time series by means of the high-pass, low-pass and band-pass filtering techniques.
	Digital filtering: high-pass, low-pass and band-pass in 2D Computer program for digital filtering by means of the high-pass, low-pass and band-pass filtering techniques applied to 2D input data.
	Digital filtering: MFT Computer program for digital filtering of surface waves registers by means of the Multiple Filter Technique (MFT).
	Digital filtering: TVF Computer program for digital filtering of surface waves registers by means of the Time Variable Filter (TVF).
	Digital filtering: Wiener Deconvolution Computer program for digital filtering of surface waves registers by means of the Wiener Deconvolution.
	Synthetic seismograms generator This program allows the generation of synthetic seismograms of surface waves.
	Theoretical amplitudes and velocities of surface waves This program allows the generation of theoretical amplitudes and velocities for the Rayleigh and Love waves.
	Azimuthal variation of surface-wave velocity The azimuthal variation of surface-wave velocity for a slightly anisotropic medium, can be obtained with this program.
	Transmission and reflection of surface waves at a vertical contact The transmission and reflection coefficients of surface waves at a vertical contact, can be obtained with this program.
	Computation of the observed ellipticity The observed ellipticity of the Rayleigh wave can be obtained with this program.
	Moho depth according to the Vening Meinesz' theory The Moho depth, according to the Vening Meinesz' theory, can be obtained with this program.

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