Spatial Distribution of Ionospheric GPS-TEC and NmF2 Anomalies Associated With The CHI-CHI Earthquake  

Oleh:

Nishihashi, M

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Jurnal Sains Dirgantara vol. 7 no. 1 (Dec. 2009), page 219-228.
Topik: GPS-TEC; Earthquake; Seismo-ionosheric; Ionosonde.

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS49.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Recently, scientists find an apparent reduction in GPS-TEC within 1 – 5 days prior to M=6.0 earthquakes in Taiwan. However, those studies did not cross examine simultaneous data in other places to confirm seismoionospheric anomalies observed. In this paper, we retrieved GPS-TEC routinely published in the global ionosphere maps (GIM). Simultaneous data of ionosonde and GPS-TEC in various locations such as Taiwan and Japan are examined to check whether the anomaly observed in Taiwan during the 1999 Chi-Chi earthquake Mw = 7.6 is the local or global effect. The result shows that the anomalies in Taiwan on 3 days before the Chi-Chi earthquake around Taiwan, and did not spread to Tokyo. We conclude that the disturbed ara is less than about 2200 km in radius.

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