دورية أكاديمية
Time-Varying Seismogenic Coulomb Electric Fields as a Probable Source for Pre-Earthquake Variation in the Ionospheric F2-Layer
| العنوان: | Time-Varying Seismogenic Coulomb Electric Fields as a Probable Source for Pre-Earthquake Variation in the Ionospheric F2-Layer |
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| المؤلفون: | Vitaly P. Kim, Valery V. Hegai, Jann Yenq Liu, Kwangsun Ryu, Jong-Kyun Chung |
| المصدر: | Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 251-256 (2017) |
| بيانات النشر: | The Korean Space Science Society, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Astronomy |
| مصطلحات موضوعية: | earthquake, Coulomb field, ionospheric perturbation, Astronomy, QB1-991 |
| الوصف: | The electric coupling between the lithosphere and the ionosphere is examined. The electric field is considered as a timevarying irregular vertical Coulomb field presumably produced on the Earth’s surface before an earthquake within its epicentral zone by some micro-processes in the lithosphere. It is shown that the Fourier component of this electric field with a frequency of 500 Hz and a horizontal scale-size of 100 km produces in the nighttime ionosphere of high and middle latitudes a transverse electric field with a magnitude of ~20 mV/m if the peak value of the amplitude of this Fourier component is just 30 V/m. The time-varying vertical Coulomb field with a frequency of 500 Hz penetrates from the ground into the ionosphere by a factor of ~7×105 more efficient than a time independent vertical electrostatic field of the same scale size. The transverse electric field with amplitude of 20 mV/m will cause perturbations in the nighttime F region electron density through heating the F region plasma resulting in a reduction of the downward plasma flux from the protonosphere and an excitation of acoustic gravity waves. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2093-5587 2093-1409 |
| Relation: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2017/v34n4/OJOOBS_2017_v34n4_251.pdf; https://doaj.org/toc/2093-5587; https://doaj.org/toc/2093-1409 |
| DOI: | 10.5140/JASS.2017.34.4.251 |
| URL الوصول: | https://doaj.org/article/0a94c0974a2f4801b503a09ff2916982 |
| رقم الأكسشن: | edsdoj.0a94c0974a2f4801b503a09ff2916982 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20935587 20931409 |
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| DOI: | 10.5140/JASS.2017.34.4.251 |