ESR N° 14: Geologically constrained joint inversion of hydraulic, tracer and ERT data for process visualization

 

Research Fellow: ANDREA PALACIOS

Find her on ResearchGate !

Host Institution: Spanish National Research Council (CSIC), Barcelona,

Objectives : Develop effective and efficient method for the inversion of flow, heat transport, electrical conductivity and conservative and reactive solute transport, which includes new constraints concerning stratigraphy and other concepts linked to site geology.

Apply the new method to ENIGMA sites.

Tasks and methodology : 

  • Active participation in field work at Argentona site (Argentona river basin,
    Maresme region), a seawater intrusion monitoring site.
  • Study of the dynamics of the seawater intrusion in a coastal aquifer.
  • Research on modeling and inversion of geophysical data, together with hydrogeological data.

Project description:

Effective integration of geological understanding into model inversion remains the single most challenging hurdle for reliable groundwater inversion. The novelty of the procedure we intent to develop lies in including sequential stratigraphy concepts as constraints in the inversion of geophysical and hydrological data for modeling of flow and transport.

In Barcelona province, the Argentona site has been built to monitor the dynamics of seawater intrusion: delineate the shape of the freshwater-saltwater interface, improve our understanding of the mixing process and study the Radium and Radon mobilization through chemical studies.

Inversion will be based on optimizing model fit to hard data on state variables (temperature, heads, conductivity, potential) of fields conditioned to categorical data (textural information from boreholes) and sequential stratigraphy concepts on continuity and orientation of layers. This will allow testing the validity of geological assumptions. The inversion should provide a detailed visualization of the actual processes occurring in the field, which would allow us to gain understanding on the movement of the seawater inland. Specifically, it should allow us to understand Radium mobilization in the freshwater-saltwater mixing zone.

Supervisors : JESUS CARRERA – CSIC Barcelona

Dissemination and Communication:

Database for the future datasets : H+ database


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