AI-GEOSTATS: Re: [Space/time method]
- Hello Angel,
you could have a look at GSLIB (see software listed at www.ai-geostats.org)
and at the following paper:
Computers & Geosciences
Volume 28, Issue 2
Title: "FORTRAN programs for space-time modeling"
Authors: L. De Cesare, D. E. Myers, and D. Posa
"Modified GSLIB FORTRAN 77 routines are given in this paper for estimating and
modeling space-time variograms. Two general families of models are
incorporated in the
programs: these are the product model and the product-sum model, both based on
the decomposition of the space-time covariance in terms of a space covariance
and a time
covariance. The GSLIB kriging program has also been modified to incorporate
these space-time models. One of the programs detects and removes temporal
periodicities in the data. The program removes them and generates residuals
for all monitoring stations, in order to estimate and model the
spatial-temporal variogram using residuals. The modified kriging program also
allows the use of cross-validation in conjunction with fitting of space-time
variogram models. The trend component and the residual variogram model can be
used for prediction. To illustrate the use of the programs, hourly averages of
NO2 for the first ten months of 1998 in Lombardy were used. "
Author Keywords: Geostatistics; Space-time models; Time series; Product
models; Product-sum models
Hope this helps.
PS: could you send next time your question to the ai-geostats mailing list
instead of me ?
"Angel Fernandez" <acortes@...> wrote:
> MIME Type:�multipart/alternative
> Dear Sir:
> I�m a PhD. Student linked to the �Water Resources and Environmental
> Geology� investigation group of the Department of Hydrogeology of the
> University of Almer�a (Spain). My doctoral thesis is about the climatic
> control of tourist caves for its possible opening to the public. For the
> realisation of my investigation I have work with space-time data
> (temperature and CO2), collected by dataloggers that I have installed
> inside several caves of southern of Spain. I have begun to consult texts
> on space-time models of time series. It has been consulting bibliography
> like I founded your web page.
> I would be very grateful if you could inform me about software for
> Spatiotemporal Analysis.
> �ngel Fern�ndez Cort�s
> Dpto de Hidrogeolog�a y Qu�mica Anal�tica
> Edificio Central. Universidad de Almer�a
> E-04120 Almer�a
> <mailto:ppulido@...> acortes@...
> Tlfno: 950015989
> Fax: 950015465
> G.I. "Recursos H�dricos y Geolog�a Ambiental"
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