Seismoacoustic and Seismoelectric Responses of Near-Surface Sedimentary Rocks in Kamchatka

• DOI

Seismoacoustic and seismoelectric responses of near-surface sedimentary rocks, detected earlier in Kamchatka by the authors, are under investigation. Cases of these responses, recorded from November 2012 to May 2023 at Karymshina site, are considered. Highly significant correlation relation between earthquake energies and distances from hypocenters was discovered in the cases of only seismoacoustic responses, as well as both seismoacoustic and seismoelectric responses of rocks. It indicates that manifestation of seismoacoustic and seismoelectric responses on near-surface sedimentary rocks is determined by the energy emitted from an earthquake source in the form of seismic waves and delivered to an observation site by these waves. Rock acoustic responses during some earthquakes were detected not only at seismic wave frequencies but also at higher kilohertz frequencies. Such high-frequency responses were also recorded at Krutoberegovo site located 480 km from Karymshina site. Observation of high-frequency seismoacoustic signals at two sites indicates the fact that their generation is manifested in sedimentary rocks in different near-surface zones of the earth crust in Kamchatka.

Mishchenko M., Rulenko O., Marapulets Y. Seismoacoustic and Seismoelectric Responses of Near-Surface Sedimentary Rocks in Kamchatka // Springer Proceedings in Earth and Environmental Sciences. Solar-Terrestrial Relations and Physics of Earthquake Precursors: Proceedings of the XIII International Conference. Switzerland: Springer Cham, 2023. P. 150-158.~--- DOI:~10.1007/978-3-031-50248-4_16.