1 Underwater surveys with mobile arrays. 2 Imaging with electrostatic arrays.

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Presentation transcript:

1 Underwater surveys with mobile arrays

2 Imaging with electrostatic arrays

3 2D 3D 2D and 3D models

4 3D resistivity imaging

5 3D electrode configurations

6 3D survey strategies

7 3D survey of a Roman villa, Orbe-Boscéaz (Switzerland)

8

9 Photos: P. Martínez Pagán, Universidad Politécnica de Cartagena Organic pollutants

10 Organic pollutants Source: Martinez Pagan, 2006, PhD thesis

11 3D imaging of a waste site

12 3. Survey strategies and interpretation Borehole and cross-hole surveys

13 Measurements in boreholes

14 Electrical well-logging Source: www-ig.unil.ch/cours

15 Source: Leroux, Palma Lopes, LCPC Electrostatic measurements in a single borehole

16 Source: Leroux, Palma Lopes, LCPC Electrostatic measurements in a single borehole (pseudosection)

17 2D cross-hole electrical tomography

18 Cross-hole configurations Source: Bing and Greenhalgh, 2000, Geophysical Prospecting 48 One remote current electrodeOne remote potential electrode Four- electrode systems

19 Anomaly effect Source: Marescot, 2002, EEGS meeting, Aveiro, Portugal Pole-pole pseudosection

20 2D cross-hole inversion