ACOUSTIC SIGNALS ASSOCIATED WITH THE PASSAGE OF PENETRATING COSMIC RADIATION THROUGH A SEISMICALLY STRESSED ENVIRONMENT

We detected the sporadic acoustic pulses presumably connected with the processes of seismic activity in the region of a deep earth’s crust fracture near Almaty city. It was found a statistically significant time correlation between such pulses and the passage moments of high energy cosmic ray muons. This observation is in favor of a theoretic supposition about possible trigger effect of small ionization created by penetrative particles deep underground which may provoke releasing the energy of elastic deformation accumulated at the edges of a seismic fault. If confirmed, this effect could be of interest for the earthquake forecast problem.

1. O. B. Chavroshkin, A. V. Nikolaev, L. N. Rykunov, and V. V. Tsyplakov. Methods, results and perspectives of the high frequency seismic noise and vibrosignals. In 6th Rep IASPEL Comm. Microseismol. 18 IUGG, Hamburg, Ger-many, 1983.

2. G. Paparo, G. P. Gregori, R. De Ritis, and A. Taloni. Acoustic emission (AE) as a diagnostic tool in geo-physics. Ann. Geophys., 45(2):401–416, 2002.

3. X. Lei and S. Ma. Laboratory acoustic emission study for earthquake generation process. Earthq. Sci., 27:627–646, 2014.

4. H. Jasperson, C. Bolton, P. Johnson, et al. Unsuper-vised classification of acoustic emissions from catalogs and fault time-to-failure prediction. arXiv:1912.06087 [physics.geo-ph], 2019.

5. B. Rouet-Leduc, C. Hulbert, N. Lubbers, et al. Machine learning predicts laboratory earthquakes. Geophys. Res. Lett., 44:9276–9282, 2017.

6. V. A. Tsarev. Geophysical applications of neutrino beams. Soviet Physics Uspekhi, 28(10):940, 1985.

7. V. A. Tsarev and V. A. Chechin. Atmospheric muons and high-frequency seismic noise. LPI Preprint No. 179, 1988.

8. G. A. Gusev, V. V. Zhukov, G. I. Merzon, et al. Cosmic rays as a new instrument of seismological studies. Bull. Lebedev Phys. Inst., 38(12):374–379, 2011.

9. L. I. Vildanova, G. A. Gusev, V. V. Zhukov, et al. The first results of observations of acoustic signals generated by cosmic ray muons in a seismically stressed medium. Bull. Lebedev Phys. Inst., 40(3):74–79, 2013.

10. A. P. Chubenko, A. L. Shepetov, V. P. Antonova, et al. New complex EAS installation of the Tien Shan mountain cosmic ray station. Nucl. Instrum. Methods A, 832:158– 178, 2016. 145

11. V. A. Ryabov, A. M. Almenova, V. P. Antonova, et al. Modern status of the Tien-Shan cosmic ray station. EPJ Web of Conf., 145:12001, 2017.

12. D. S. Adamov, B. N. Afanasjev, V. V. Arabkin, et al. Phenomenological characteristics of EAS with Ne = 2 105 2 107 obtained by the modern Tien-Shan instal-lation “Hadron”. In Proceedings of the 20th ICRC, vol-ume 5, pages 460–463, Moscow, USSR, 1987.

13. T. Antoni, W. D. Apel, A. F. Badea, et al. Muon density measurements with the KASCADE central detector. As-tropart. Phys., 16:373–386, 2 2002.

14. T. Pierog and K. Werner. Muon production in extended air shower simulations. Phys. Rev. Lett., 101:171101, 10 2008.

15. A. Shepetov, A. Chubenko, O. Kryakunova, et al. Under-ground neutron events at Tien Shan. J. Phys.: Conf. Ser., 1181:012017, 2019.

16. A. L. Shepetov, T. Kh. Sadykov, K. M. Mukashev, et al. Seismic signal registration with an acoustic detector at the Tien Shan mountain station. 429(3):47–56, 2018.

17. K. M. Mukashev, T. Kh. Sadykov, V. A. Ryabov, et al. Investigation of acoustic signals correlated with the flow of cosmic ray muons in connection with seismic activity of Northern Tien Shan. Acta Geophys., 67(4):1241–1251, 2019.