Joint perturbation of geoacoustic, emanation, and atmospheric electric fields at the boundary of the earth’s crust and the atmosphere before an earthquake

Abstract

Abstract. The possibility of joint perturbation of geoacoustic, emanation and atmospheric electric fields by the Earth's crust -atmosphere boundary before an earthquake is considered. In order to detect it, simultaneous registration of these fields was carried out in Kamchatka in August-October 2012. Synchronous anomalous disturbances were recorded 13 days before an earthquake with the magnitude M w = 5.6 at the distance of 140 km from an epicenter. It may be considered to be a complex short-term precursor.

Joint Anomalies of High-Frequency Geoacoustic Emission and Atmospheric Electric Field by the Ground–Atmosphere Boundary in a Seismically Active Region (Kamchatka)

“…Joint anomalous disturbances of radon, thoron, geoacoustic emission and atmospheric electric field on 2 October were observed 13 days before the earthquake with the magnitude of 5.6 mww. It occurred on 15 October at 01:19 UTC at the epicentral distance R = 140 km from "Karymshina" site [29]. The epicenter coordinates are 51.900 • N, 159.379 • E, the source depth is 21 km (NEIC, http://earthquake.usgs.gov).…”