大湾区珠江口海上高密度电法探测

陈斌; 汪耀; 胡祥云; 李倩婕

doi:10.3799/dqkx.2020.289

Volume 45 Issue 12

Dec. 2020

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Article Navigation > Earth Science > 2020 > 45(12): 4550-4562

Chen Bin, Wang Yao, Hu Xiangyun, Li Qianjie, 2020. Marine Electrical Resistivity Tomography Research in Pearl River Estuary of Greater Bay Area. Earth Science, 45(12): 4550-4562. doi: 10.3799/dqkx.2020.289

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Chen Bin, Wang Yao, Hu Xiangyun, Li Qianjie, 2020. Marine Electrical Resistivity Tomography Research in Pearl River Estuary of Greater Bay Area. Earth Science, 45(12): 4550-4562. doi: 10.3799/dqkx.2020.289

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Marine Electrical Resistivity Tomography Research in Pearl River Estuary of Greater Bay Area

doi: 10.3799/dqkx.2020.289

1.
Institute of Geological Survey, China University of Geosciences, Wuhan 430074, China
2.
Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074, China

Received Date: 2020-08-18
Publish Date: 2020-12-15

Abstract

Abstract

Applying the electrical resistivity tomography (ERT) technique in the marine environment claims higher levels in the aspects of instrument, measurement techniques, inversion and interpretation methods and so on. The exploration approaches on issues of geology, natural resources and environment will be further enriched by numerical simulations and actual measurement research of the marine ERT in the coastal area. Based on numerical simulations and field measurements, in this paper it focuses on the research of the resolution and spatial location of the typical geo-electrical models in the offshore area with different arrays such as dipole-dipole, Wenner and Schlumberger. It also studied the effects of seawater conductivity and first conducted two long profile measurements at the site of Pearl River Estuary in the Lingdingyang area. It shows that the detection depth and resolution with different configurations would be differentially influenced by the conductivity of the seawater. And the construction risk of applying the boat-towed electrode arrays floating on the water and pulled behind a boat with borehole electrode cables and buoyant materials is much lower than a pulled-array on the seafloor. This will achieve a balance among the effect, depth and the efficiency for the ERT in the complex marine environment and finally promote the development and maturity of ERT technology.
- Greater Bay Area,
- Lingdingyang,
- offshore area,
- marine electrical resistivity tomography,
- marine geophysics

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References(43)

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Marine Electrical Resistivity Tomography Research in Pearl River Estuary of Greater Bay Area

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