The observation of ultra‐low frequency emissions at Nakatsugawa, Japan, in possible association with the Sumatra, Indonesia, earthquake
2007; Taylor & Francis; Volume: 28; Issue: 13-14 Linguagem: Inglês
10.1080/01431160601091779
ISSN1366-5901
AutoresKenji Ohta, Nobuo Watanabe, Masashi Hayakawa,
Tópico(s)Seismology and Earthquake Studies
ResumoThe observation of direct current (DC)/ultra‐low frequency (ULF) electromagnetic emissions at Nakatsugawa, Gifu, Japan, has indicated that ULF emissions in the frequency below 0.1 Hz took place about 3–10 days before the disastrous Sumatra, Indonesia, earthquake. The most important support to this is based on the goniometric direction finding for those ULF emissions during the period of 17–23 December, which indicates their azimuth angle being very close to the epicentre of the earthquake. So, these ULF emissions between 17–23 December are likely to be associated with the earthquake.
Referência(s)