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Student Number 85227007
Author Wen-Lung Yu(s)
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Department Graduate Institute of Space Science
Year 1997
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title
Date of Defense
Page Count 30
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Abstract Computer Ionospheric Tornography(CIT) is a new method to study the large scale structure of the ionosphere. This report use this method to analysis the NNSS data during the volcano eruption on 22 November 22 1994. By these analyses, we find the electron density has obvious raise before the volcano eruption. However, about thirty hours after volcano eruption, electron density also has obvious raise and its maximum positions transmit toward north. But, at the second day, electron density has recovered as the same as the reference day. These results show the volcanic effects vanish.
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