Publication de 12 numéros par an
ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009
Indexed in
THE IONOSPHERIC PRECURSOR TO THE 2011 MARCH 11 EARTHQUAKE AS BASED ON THE JAPAN-PACIFIC SUBIONOSPHERIC VLF/LF NETWORK OBSERVATION
RÉSUMÉ
By using the network observations of sub-ionospheric VLF/LF signals in Japan and Russia, we found a significant ionospheric perturbation prior to the 2011/3/11 Japan earthquake (EQ). A remarkable decrease was detected in the nighttime amplitude and increase in the dispersion on March 5 and 6, on the paths from NLK (Seattle, USA) to Chofu, Kochi and Kasugai. We found also the anomalies in March 1-6 period and minima in the nighttime amplitude on March 3 and 4 on the path JJI (Miyazaki, Kyushu) - Kamchatka, Russia. We describe perturbations and discuss the relevant geophysical environment. Data are compared with perturbations of many inland EQs, and with the spatial scale of similar oceanic Sumatra EQ in 2004. The generation mechanism of ionospheric perturbations is outlined.
-
Shen Xuhui, Zhima Zeren, Zhao Shufan, Qian Geng, Ye Qing, Ruzhin Yuri, VLF radio wave anomalies associated with the 2010 Ms 7.1 Yushu earthquake, Advances in Space Research, 59, 10, 2017. Crossref