摘要： In this paper, we conduct statistical approaches to study the potential relation between ELF-whistlers/emissions below 100Hz and 20 M greater than or equal to 5.0 earthquakes occurred in Taiwan in the period from 26 August 2003 to 13 July 2004. Occurrence ratios of the ELF-whistler and ELF-emission of the entire study period are computed as the reference backgrounds. Our study shows that the ELF-whistlers and ELF-emissions during the earthquake period appear less and more frequently than their associated backgrounds, respectively. For the ELF-emission, the larger earthquakes generally yield the higher occurrence ratios. The statistical analyses confirm that the occurrence ratios of the ELF-emission significantly enhance 5-7days before the earthquakes and are proportional to the earthquake magnitude but inversely to the distance from the observatory to the epicenter. Key Points * The ELF-emissions significantly enhance before large earthquakes * The appearance of the ELF-emissions is proportional to the earthquake magnitude * Less chance observing the ELF-emissions if far away from the epicenter 出版日期： 2013-06-01 出處： Journal of geophysical research : Space physics (2013 - Present), 2013-06, Vol.118 (6), p.3760-3768 資源來源： Access articles in the Wiley collection 識別號： ISSN: 2169-9380 識別號： EISSN: 2169-9402 識別號： DOI: 10.1002/jgra.50356
