期刊
JOURNAL OF GEOPHYSICS AND ENGINEERING
卷 8, 期 4, 页码 487-497出版社
IOP PUBLISHING LTD
DOI: 10.1088/1742-2132/8/4/001
关键词
electrical resistivity tomography; single borehole-to-surface; inversion
资金
- British Geological Survey [2K02E019]
- Natural Environment Research Council [bgs05003] Funding Source: researchfish
- NERC [bgs05003] Funding Source: UKRI
Several measurement arrangements involving different electrode arrays are considered for the case of single borehole-to-surface ERT surveys. Synthetic data tests indicate that standard measuring and inversion techniques can result in reconstructed images that suffer from artefacts. Based on the measurement sensitivity analysis, we propose a modified inversion scheme that compensates for the symmetric sensitivity of the in-hole measurements and improves the quality of the image. The new scheme has been tested using both synthetic and field data. The best results were obtained using pole-dipole or dipole-dipole arrays. Finally, some recommendations are made to improve the efficiency of field measurement configurations.
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