A new electric streamer for the characterization of river embankments

Comina, Cesare; Vagnon, Federico; Arato, A.; Fantini, Fausto; Naldi, M.

doi:10.1016/j.enggeo.2020.105770

Cited by 12 publications

(11 citation statements)

References 30 publications

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“…More details on the performed calibration tests and on the effectiveness of the electric streamer can be found in Comina et al . (2020b).…”

Section: Surveying Methodologymentioning

confidence: 99%

“…The set‐up of the electric part of the streamer is similar to that reported in Comina et al . (2020b) and is constituted by 12 active electrodes, placed at increasing spacings, symmetrically centred around the electric array midpoint (Fig. 2a).…”

Section: Surveying Methodologymentioning

confidence: 99%

“…The electric measurement sequence is based on both Wenner–Schlumberger and dipole–dipole quadrupoles. It guarantees an adequate data coverage, by reaching a maximum depth of investigation of about 10 m, which is satisfactory for most river embankments (for more details, refer to Comina et al ., 2020b). Acquired data are stored in a survey laptop by which pre‐processing steps can be applied directly on site, if needed (Comina et al ., 2020a).…”

Section: Surveying Methodologymentioning

confidence: 99%

“…A drip irrigation system completes the electric part of the streamer to further reduce the contact resistances between the electrodes and the ground. More details on the performed calibration tests and on the effectiveness of the electric streamer can be found in Comina et al (2020b).…”

Section: S U Rv E Y I N G M E T H O D O L O G Ymentioning

confidence: 99%

“…However, these systems usually suffer from depth limitations and are adopted for agricultural or archaeological surveys, but not consistently applied for the characterization of earth structures. A devoted electric streamer, based on the galvanic coupling approach, but with specific electrodes design and technological details, was recently developed (Comina et al ., 2020b) specifically for the execution of geoelectrical measurements in motion along earth structures. This last system demonstrated its effectiveness and the possibility to obtain results comparable to standard ERT investigations with the advantage of reduced survey time, increased efficiency and data coverage.…”

Section: Introductionmentioning

confidence: 99%

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First application of a new seismo‐electric streamer for combined resistivity and seismic measurements along linearly extended earth structures

Arato¹,

Vagnon

Comina

2022

Near Surface Geophysics

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Linearly extended earth structures (e.g., river embankments and earth dams) require specific characterization tools to efficiently evaluate stability conditions along their relevant extensions. For this aim, geophysical surveys, both seismic and electric, are commonly used and considered complementary to geotechnical investigations. They provide imaging of parameter variations along the whole structures and not just local information in correspondence of boreholes. Improvements in these survey methodologies can further increase the application of these geophysical methods, eventually also as fast‐screening characterization tools. In this paper, the first application of a new seismo‐electric streamer, specifically designed for these aims, is presented. The developed streamer allows the contemporary acquisition of seismic and electric data while being dragged along the investigated structure. The technical solutions adopted for its construction are briefly described, and its application to the characterization of an embankment is presented. The results obtained with this new system are comparable with usually adopted investigation tools with the advantage of reduced survey time and increased efficiency.

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“…More details on the performed calibration tests and on the effectiveness of the electric streamer can be found in Comina et al . (2020b).…”

Section: Surveying Methodologymentioning

confidence: 99%

Section: Surveying Methodologymentioning

confidence: 99%

Section: Surveying Methodologymentioning

confidence: 99%

Section: S U Rv E Y I N G M E T H O D O L O G Ymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

First application of a new seismo‐electric streamer for combined resistivity and seismic measurements along linearly extended earth structures

Arato¹,

Vagnon

Comina

2022

Near Surface Geophysics

Self Cite

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Characterization of a river embankment using a non‐destructive direct current electrical survey

Umezawa

Jinguuji

Yokota

2022

Near Surface Geophysics

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River embankments are earthen structures constructed to protect areas from flooding. If a river embankment collapses, it can cause major damage to human lives; therefore, proper inspection and evaluation are essential to determine the problem areas in river embankments, and repair them if necessary, before any damage occurs. Electrical surveys are a reliable method that has been used widely. Recently, electrical surveys have been used to inspect long structures such as river embankments, highlighting the need for developing non-destructive and less fieldwork electrical survey methods. In this study, we examined a direct current electrical exploration system using polyvinyl alcohol sponge roller electrodes, which are non-destructive and can be moved smoothly without damaging the ground surface. We conducted initial experiments on a test ground in which this new system was towed by an unmanned ground vehicle to perform an electrical survey and compared the results with those obtained using conventional methods that utilize stainless steel electrodes driven into the ground. The results indicate that the direct current electrical survey using the polyvinyl alcohol electrodes yielded almost the same results as those obtained using the stainless steel electrodes. In addition, both methods were tested on a river embankment to investigate the effectiveness of the towed direct current electrical survey. We confirmed that the towed survey method was effective by comparing the resistivity cross-sections and fieldwork required for both survey types.

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Geotechnical, Geoelectric and Tracing Methods for Earth/Rock-Fill Dam and Embankment Leakage Investigation

Nan,

Ren,

Zhang

et al. 2023

Surv Geophys

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A new electric streamer for the characterization of river embankments

Cited by 12 publications

References 30 publications

First application of a new seismo‐electric streamer for combined resistivity and seismic measurements along linearly extended earth structures

First application of a new seismo‐electric streamer for combined resistivity and seismic measurements along linearly extended earth structures

Characterization of a river embankment using a non‐destructive direct current electrical survey

Geotechnical, Geoelectric and Tracing Methods for Earth/Rock-Fill Dam and Embankment Leakage Investigation

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