Characterizing the spatial variability of transmissivity using stochastic type-curve and numerical inverse analyses of data from a sequence of pumping tests

Monica Riva, Alberto Guadagnini, Shlomo P Neuman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We discuss two recent methods of characterizing the spatial variability of a random (natural) log transmissivity field on the basis of observed space-time variations in hydraulic head: a graphical stochastic type-curve method and a geostatistical method of inverting (ensemble) mean flow equations. While both methods allow estimating the unconditional variance and integral (correlation) scale of log transmissivities, geostatistical inversion is computationally more intensive, but also provides tomographic images of how log transmissivity estimates and their variance vary in space. We apply the two approaches to synthetic scenarios and to measured late time (quasi-steady state) drawdowns from a sequence of transient pumping tests in an unconfined aquifer near Tübingen, Germany.

Original languageEnglish (US)
Title of host publicationIAHS-AISH Publication
Pages39-44
Number of pages6
Edition320
StatePublished - 2008
EventInternational Conference on Calibration and Reliability in Groundwater Modelling: Credibility of Modelling, ModelCARE2007 - Copenhagen, Denmark
Duration: Sep 9 2007Sep 13 2007

Other

OtherInternational Conference on Calibration and Reliability in Groundwater Modelling: Credibility of Modelling, ModelCARE2007
CountryDenmark
CityCopenhagen
Period9/9/079/13/07

Fingerprint

transmissivity
pumping
unconfined aquifer
hydraulic head
drawdown
method
test

Keywords

  • Geostatistics
  • Pumping tests
  • Stochastic inverse models
  • Type curves

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

Characterizing the spatial variability of transmissivity using stochastic type-curve and numerical inverse analyses of data from a sequence of pumping tests. / Riva, Monica; Guadagnini, Alberto; Neuman, Shlomo P.

IAHS-AISH Publication. 320. ed. 2008. p. 39-44.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Riva, M, Guadagnini, A & Neuman, SP 2008, Characterizing the spatial variability of transmissivity using stochastic type-curve and numerical inverse analyses of data from a sequence of pumping tests. in IAHS-AISH Publication. 320 edn, pp. 39-44, International Conference on Calibration and Reliability in Groundwater Modelling: Credibility of Modelling, ModelCARE2007, Copenhagen, Denmark, 9/9/07.
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