Transcript
Page 1: 1 Underwater surveys with mobile arrays. 2 Imaging with electrostatic arrays

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Underwater surveys with mobile arrays

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Imaging with electrostatic arrays

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2D2D

3D3D

2D and 3D models

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3D resistivity imaging

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3D electrode configurations

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3D survey strategies

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

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

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

Organic pollutants

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Organic pollutants

Source: Martinez Pagan, 2006, PhD thesis

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3D imaging of a waste site

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3. Survey strategies and interpretation

Borehole and cross-hole surveys

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Measurements in boreholes

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Electrical well-logging

Source: www-ig.unil.ch/cours

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15Source: Leroux, Palma Lopes, LCPC

Electrostatic measurementsin a single borehole

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16Source: Leroux, Palma Lopes, LCPC

Electrostatic measurementsin a single borehole (pseudosection)

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2D cross-hole electrical tomography

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Cross-hole configurations

Source: Bing and Greenhalgh, 2000, Geophysical Prospecting 48

One remote current electrode One remote potential electrode

Four- electrode systems

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Anomaly effect

Source: Marescot, 2002, EEGS meeting, Aveiro, Portugal

Pole-pole pseudosection

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2D cross-hole inversion


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