A statistical study on ELF-whistlers/emissions and M %26gt;= 5.0 earthquakes in Taiwan

作者：Liu J Y^*; Wang K; Chen C H; Yang W H; Yen Y H; Chen Y I; Hatorri K; Su H T; Hsu R R; Chang C H

来源：JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2013, 118(6): 3760-3768.

DOI：10.1002/jgra.50356

• ELF-whistlers
• ELF-emissions
• earthquake

In this paper, we conduct statistical approaches to study the potential relation between ELF-whistlers/emissions below 100Hz and 20 M5.0 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.

• 出版日期2013-6
• 单位中央民族大学; 中国科学院