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Observation of vertical electron density profile in inospheric E-layer during Indian-Ocean earthquake on December 2004 using CHAMP satellite | ||
| فیزیک زمین و فضا | ||
| مقاله 5، دوره 42، شماره 4، دی 1395، صفحه 43-47 اصل مقاله (673.63 K) | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2016.58891 | ||
| نویسندگان | ||
| Siti Harwani Md Yusoff* 1؛ Lim Hwee San2؛ Yoon Tiem Leong2 | ||
| 1School of Aerospace Engineering, Universiti Sains Malaysia Engineering Campus | ||
| 2School of Physics,Universiti Sains Malaysia | ||
| چکیده | ||
| This paper describes the observation and analysis of vertical electron density before major earthquake above the Sumatra-Malaysia region during Indian Ocean major earthquake in 2004 in Aceh, Sumatra. The electron density profile in E-layer of ionosphere a few days before earthquake and a few hours after earthquake have been observed using the data from the CHAMP satellite. The data obtained from the CHAMP satellite based on GPS radio occultation technique, starting from 21st Dec, 2004 until 27th Dec, 2004, between 90 - 120 km altitude ranges. It is shown that significant anomaly can be detected as early as 3 days before the major earthquake above the preparation zone of earthquake epicentre through significant disturbances of the electron concentration in the ionosphere. In addition, the electron density in the ionosphere above the earthquake epicentre is observed to be very high during 8 hours before earthquake occurred. After a day of the earthquake occurrence, it is observed that the electron density decreases and the ionospheric region become more stable. | ||
| کلیدواژه‌ها | ||
| earthquake؛ CHAMP satellite؛ Ionosphere؛ electron density | ||
| عنوان مقاله [English] | ||
| Observation of vertical electron density profile in inospheric E-layer during Indian-Ocean earthquake on December 2004 using CHAMP satellite | ||
| مراجع | ||
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