Extracting Seismic Electronic Signals from the Telluric Current Data for the Nigata Chuetsu Earthquake by ICA

摘要

This paper presents the results where we apply IC A (Independent Component Analysis) to TCD (Telluric Current Data) observed in 2004 when the Nigata Chuetsu earthquake occurred, and detect SESs (Seismic Electric Signals). Detecting SESs from TCD is an effective method for short-term earthquake prediction. In Japan, however, detecting SESs from TCD is considered as a difficult task because of train noise embedded in TCD. It becomes easy if we can separate train noise and SESs. Therefore, we investigate the application of ICA for the separation.