دورية أكاديمية
Existence of evanescent electromagnetic waves resulting from seismoelectric conversion at a solid-porous interface
| العنوان: | Existence of evanescent electromagnetic waves resulting from seismoelectric conversion at a solid-porous interface |
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| المؤلفون: | Ren, Hengxin, Huang, Qinghua, Chen, Xiaofei |
| المساهمون: | Ren, HX (reprint author), Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China., Ren, HX (reprint author), Univ Sci & Technol China, Lab Seismol & Phys Earths Interior, Hefei 230026, Anhui, Peoples R China., Ren, HX (reprint author), Mengcheng Natl Geophys Observ, Hefei 230026, Anhui, Peoples R China., Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China., Univ Sci & Technol China, Lab Seismol & Phys Earths Interior, Hefei 230026, Anhui, Peoples R China., Mengcheng Natl Geophys Observ, Hefei 230026, Anhui, Peoples R China., Peking Univ, Sch Earth & Space Sci, Dept Geophys, Beijing 100871, Peoples R China. |
| المصدر: | EI ; SCI |
| بيانات النشر: | GEOPHYSICAL JOURNAL INTERNATIONAL |
| سنة النشر: | 2016 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | Numerical solutions, Magnetic and electrical properties, Hydrogeophysics, Computational seismology, Wave propagation, POSSIBLE GENERATION MECHANISM, SEISMIC ELECTRIC SIGNAL, NUMERICAL-SIMULATION, HALF-SPACE, THEORETICAL SIMULATION, IRREGULAR INTERFACES, MULTILAYERED MEDIA, FIELD-MEASUREMENTS, IZMIT EARTHQUAKE, GREEN-FUNCTIONS |
| الوصف: | Adopting a model with two half-spaces that consist of solid and porous materials, we numerically investigate the seismoelectric conversion at the solid-porous interface. First, the wave fields in a low-porosity two-layer model are compared with those in a homogeneous full-space model. The consistency of seismic waves is a validation of our program. We are interested in the quasi-coseismic electromagnetic (EM) signals recorded in the solid area near the interface because they seemingly accompany seismic waves. Then, further numerical simulations on an ordinary two-layer model are conducted. On the basis of time slice snapshots and theoretical analysis, we determine that quasi-coseismic EM signals are essentially non-coseismic EM fields, which include radiation and evanescent EM waves. Evanescent EM waves are induced by the seismic waves that arrive at the interface with the incident angle greater than the critical angle. These waves decay faster than radiation EM waves when moving away from the interface. In the porous layer, evanescent EM waves can hardly be recognized unless they are separated from coseismic EM signals. This finding can be the reason why evanescent EM waves have not been identified in previous seismoelectric studies. Awareness of the fact that seismoelectric conversion at an interface can generate evanescent and EM waves is likely to result in a comprehensive understanding and improved interpretation of the seismoelectric coupling phenomenon. ; National Natural Science Foundation of China [41274054, 41274053, 41274075] ; SCI(E) ; EI ; ARTICLE ; renhx@ustc.edu.cn ; 1 ; 147-166 ; 204 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0956-540X 1365-246X |
| العلاقة: | GEOPHYSICAL JOURNAL INTERNATIONAL.2016,204,(1),147-166.; 1395645; http://hdl.handle.net/20.500.11897/437993Test; WOS:000368427000009 |
| DOI: | 10.1093/gji/ggv400 |
| الإتاحة: | https://doi.org/20.500.11897/437993Test https://doi.org/10.1093/gji/ggv400Test https://hdl.handle.net/20.500.11897/437993Test |
| رقم الانضمام: | edsbas.711CD3FE |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 0956540X 1365246X |
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| DOI: | 10.1093/gji/ggv400 |