Investigation of ULF magnetic anomaly during Izu earthquake swarm and Miyakejima volcano eruption at summer 2000, Japan

被引：15
|
作者：
Kotsarenko, A
Molchanov, O
Hayakawa, M
Koshevaya, S
Grimalsky, V
Enríquez, RW
Cruz-Abeyro, JAL
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Geociencias, Queretaro 76001, Mexico
[2] Inst Phys Earth, Moscow, Russia
[3] Univ Electrocommun, Tokyo 1828585, Japan
[4] UAEM, CIICAp, Cuernavaca, Morelos, Mexico
[5] INAOE, Puebla, Pue, Mexico
来源：
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES | 2005年 / 5卷 / 01期
关键词：
D O I：
10.5194/nhess-5-63-2005
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Results of the ULF electromagnetic emission during the Izu, 2000 earthquake (EQ) swarm and Miyake volcano eruptions during the summer period of 2000 are presented and analyzed. The analysis of the obtained data has been performed in 3 main directions: traditional statistical analysis, i.e. analysis of time dynamics of spectral density, polarization ratios and their derivatives, Principal Component Analysis, and Fractal Analysis. The statistical characteristics were studied at different frequency sub-bands in a frequency range 10(-3)-0.3 Hz. These methods of data processing are described and the obtained results are illustrated and discussed. Some peculiarities of the obtained results such as the rise of the second principal component and the rise of the fractal index can be interpreted as possible short-time precursors.
引用
收藏
页码：63 / 69
页数：7
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