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Precursory electromagnetic phenomena associated with a big earthquake in Indonesia on Febrary 17, 1996
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- ITOH Tetsuya
- The Univ. of Electro-Communications
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- HAYAKAWA Masashi
- The Univ. of Electro-Communications
Bibliographic Information
- Other Title
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- インドネシア地震に対する前兆諸現象
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Description
The two candidates promising for short-term earthquake prediction are (1) ULF seismogeric emissions (just coming from the focal region) and (2) subionospheric VLF/LF propagation, This results deals with the precursory results for a large earthquake at Biak Island, Indonesia (Ms-8.0, depth-20km) on February 17th, 1996. First of all, there was fortunately a magnetic observatory (belonging to Nagoya University), where they measure the three field components (Bx, By, Bz) with sampling rate of 1sec. The result suggests a precursory ULF signature. Also, the data (phese) of subionospheric VLF signals transmitted from Omega (Australia) and received at Inubo, have yielded that there were observed significant anomalies, which are evident to be associated with the earthquake. The analyses for different observation items for a perticular earthquake is extremely rare.
Journal
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- Technical report of IEICE. SANE
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Technical report of IEICE. SANE 97 (377), 33-36, 1997-11-17
The Institute of Electronics, Information and Communication Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1571980077337592832
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- NII Article ID
- 110003288703
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- NII Book ID
- AN10013301
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- Text Lang
- ja
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- Data Source
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- CiNii Articles