Forward modelling and inversion of streaming potential for the interpretation of hydraulic conditions from self-potential data

This paper describes the conception and deployment of a multi-geophysics and remote sensing approach to monitoring internal erosion in a test embankment that was loaded to increase seepage and initiate internal erosion in Booneschans, Netherlands in fall 2013. IJkdijk is a full-scale field testing embankment constructed to facilitate sensor validation testing for monitoring embankment loading and failure conditions. The embankment was constructed of a single zone high plasticity clay embankment with sand foundation. The test embankment was subjected to reservoir loads simulating tidal and storm surge conditions known to induce internal erosion in actual embankments. Geophysical monitoring of subsurface conditions was pursued using self-potential and passive seismic methods. Concurrent terrestrial lidar remote sensing methods were implemented to track millimeter scale deformation. Each of these monitoring approaches was implemented successfully and yielded useful spatial and temporal information throughout the seven days of testing, from initial reservoir loading to completion of the test.

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Estimation of Permeability Structure with Self Potential Inversion

Ozaki¹,

Mikada²,

Goto³

et al. 2012

Recent Advances in Exploration Geophysics

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In this study, we developed the 2D inversion program that estimate the permeability structure from Self-potential(SP) profile. We applied these inversion programs to synthetic SP profiles. The synthetic SP profiles, used as observed data for the inversion, are evaluated with modeled slopes with 800m length and 40m height including various permeability anomalies. Four models including the permeable anomalies located in the center of the model are used for the estimation of the performance of our inversion. A priori information of the distribution of streaming current coefficient , electrical conductivity and the flux volume at the discharge and recharge are given for our inversion. The horizontal zone with high permeability and the vertical zone with low permeability can be reconstructed with our inversion properly. However, the horizontal low permeable and the vertical high permeable zone cannot be imaged clearly. The regional groundwater flow pattern around the permeability anomaly has great effect on the SP pattern on the surface. The consideration of flow pattern around the permeability anomaly and effect on the SP profile are necessary for the accurate inversion of SP data.

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Forward modelling and inversion of streaming potential for the interpretation of hydraulic conditions from self-potential data

Cited by 3 publications

References 1 publication

Reply to the comment by A. Revil on “Review of Self-potential methods in Hydrogeophysics” by L. Jouniaux et al. [C. R. Geoscience 341 (2009) 928–936]

Reply to the comment by A. Revil on “Review of Self-potential methods in Hydrogeophysics” by L. Jouniaux et al. [C. R. Geoscience 341 (2009) 928–936]

Design and Implementation of Geophysical Monitoring and Remote Sensing during a Full-Scale Embankment Internal Erosion Test

Estimation of Permeability Structure with Self Potential Inversion

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