Features of the Earth surface deformations in Kamchatka peninsula and their relation with geoacoustic emission

Abstract

Abstract. The paper presents the results of investigations of deformation process in the near surface sedimentary rocks, which has been carried out in a seismically active region of Kamchatka peninsular since 2007. The peculiarity of the experiments on registration of geodeformations is the application of a laser strainmeter-interferometer constructed according to the Michelson interferometer scheme. Besides rock deformations, geoacoustic emission in the frequency range from several hertz to the first tens of kilohertz is under the investigation. Piezoceramic hydrophones installed in artificial water reservoirs are applied. It is shown that periods of primary rock compression and tension with the duration up to several months are distinguished in the geodeformation process at the observation site. During the direction change in the deformations, when geodeformation process rate grows, the increase of geoacoustic radiation is observed.