Abstract
One of the most important problems for the theory and practice of earthquake prediction is that of the source of substances in the formation of precursory hydrogeochemical anomalies. Volatile components that are separated from rocks at mechanical loading present one of the sources. A large-scale model experiment is conducte with a 50 000-ton press; the results reveal the regularities of water, radon, mercury, and helium separation from large basalt and granite samples that are subjected to a cyclically increasing, uniaxial pressure to fracture (at 75 and 180 MPa for basalt and granite, respectively). Premonitory rock fracture is found to be accompanied by the separation of volatile components from rocks. Predictive properties of the components are associated with their chemical nature and the forms in which they exist in rocks. Water release during mechanical loading increases gradually with the increase in loading. Helium separation begins at the early stages of the cracking process. Comparison of the data on degassing with data on bulk strain and acoustic emission shows that the major part of radon is released at the stage of avalanche-type crack interaction and at the dynamic stage of the formation of an earthquake source, whereas mercury degasses mainly at the dynamic stage immediately before fracture of the sample.
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References
Barsukov, V. L., Serebrennikov, V. S., Varshal, G. M., andGaranin, A. V. (1979),Hydrogeochemical Methods of Earthquake Prediction, Geokhim. No. 3, 323–337.
Barsukov, V. L., Varshal, G. M., Serebrennikov, V. S., Garanin, A. V., Zamokina, N. S., andBakaldin, Yu. A. (1981),Variation of Chemical Composition of Groundwaters as Earthquake Precursors, 21st General Assembly IASEPI, London, Canada, July 21–30, 1981. Abstracts A2, 19.
Cai Zu-huang andShi Hui-xin,Hydrogeochemical Earthquake Precursors (Dichzhi Chubanshe 1980), pp. 206 (in Chinese).
Carrol, R. M. (1965),Fission Products Release from Fuels, Nuclear Safety7, No. 1, 34–44.
Finkelshtein, D. N.,Inert Gases (Nauka, Moscow 1979), pp. 184–199.
Geld, P. V., Ryabov, R. A., andKodes, E. S.,Hydrogen and Structural Imperfections in Metals (Metallurgia, Moscow 1979), pp. 221.
Gerling, E. K. (1957),Helium Migration from Minerals and Rocks, Proc. Radium Inst. U.S.S.R. Acad. Sci., Leningrad6, 64–87.
Giardini, A. A., Subbarayudu, G. V., andMelton, C. E. (1976),The Emission of Occluded Gas from Rocks as a Function of Stress: Its Possible Use as a Tool for Prediction of Earthquakes, Geophys. Res. Lett.3, 355–357.
Hillebrand, W. F., Lundell, G. E. F., Bright, H. A., andHoffman, G. I.,Applied Inorganic Analysis with Special Reference to the Analysis of Metals, Minerals and Rocks (Wiley, New York and Chapman and Hall, London 1953).
Hauksson, E. (1981),Radon Content of Groundwater as an Earthquake Precursor: Evaluation of World-Wide Data and Physical Basis, J. Geophys. Res.86, No. B10, 9397–9411.
Holub, R. F., andBrady, B. T. (1981),The Effect of Stress on Radon Emanation from Rock, J. Geophys. Res.86, No. B3, 1776–1784.
Honda, M., Kurita, K., Hamano, Y., andOzima, M. (1982),Experimental Studies of He and Ar Degassing During Rock Fracturing, Earth Planet. Sci. Lett.59, 429–436.
Jernelöv, A., Landner, L., andLarsson, T. (1975),Swedish Perspectives on Mercury Pollution, J. Water Pollution Control Fed.47, No. 4, 810–820.
Large-Scale Modeling of Earthquakes and Mountain Shocks by Use of a 50,000-Ton Press. Report: Institute of Physics of the Earth, Institute of High-Pressure Physics, Physico-Technical Institute, V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry (U.S.S.R. Acad. Sci.), Institute of Physics and Mechanics (Acad. Sci., Kirghisia), Cooperative Institute for Research in Environmental Sciences (CIRES), Univ. Colorado (U.S.A.), Moscow-Troitsk, 1982.
Luo Guang-wei, Shi Zi-zhoug, Zhou Riu-guang, andXing Hong-yin (1981),A Study of Simulative Experiment of a Precursor Phenomenon of Radon Emanation of the Haicheng Earthquake, 21st General Assembly LASPEI, London, Canada, July 21–30, 1981.
Mavlyanov, G. A., Sultankhodzhayev, A. N.,et al., The Phenomenon of Changes in the Chemical Composition of Groundwaters during Earthquakes, Pat. No. 129, appl. No. 01-79-28, April 14, 1971, Bull. No. 42, 1971.
Mizutani, H., Spetzler, H., Getting, I., Martin, III, R. J., andSoga, N. (1977),The Effect of Outgassing upon the Closure of Cracks and Strength of Lunar Analogues, Proc. 8th Lunar Sci. Conf., 1977, 1235–1248.
Mogro-Campero, A. Fleischer, R. L., andLikes, R. S.,Changes in Subsurface Radon Concentration Associated with Earthquakes, GE preprint, 79CRD035.
Pushkarev, Yu. N., Arakelyants, M. M., Ivanenko, V. V., andPupyrev, Yu. G. (1982),Differences in the Behaviour of the 40 Ar and 39 Ar Isotopes during Mineral Abrasion as a Result of Disturbances in the K−Ar Systems, Dokl. AN SSSR262, No. 3, 705–709.
Rikitake, T. (1979),Earthquake Precursors, Intl. Symp. Earthquake Prediction, UNESCO, Paris, April 2–6, 1979, pp. 38.
Saukov, A. A., Ozerova, N. A., andAidinyan, N. Kh.,Essays on the Mercury Geochemistry (Nauka, Moscow 1972), pp. 336.
Scholz, C. N., Sykes, L. R., andAggarwal, Y. P. (1973),Earthquake Prediction: A Physical Basis, Science181, No. 4102, 803–810.
Semerchan, A. A., Sobolev, G. A.,et al. (1981),Studies into the Precursors of the Mechanical Fracturing of Large Samples, Dokl. AN SSSR260, No. 3.
Sultankhodzhayev, A. N., andZigan, F. G.,Methodological Recommendations on Hydrogeoseismological Studies (FAN Tashkent 1980), pp. 51.
Voikevich, G. V., Miroshnikov, A. E., Povarennykh, A. S., andProkhorov, V. G.,Concise Handbook on Geochemistry (Nedra, Moscow 1970), pp. 278.
Yanitsky, I. M.,Helium Surveying (Nedra, Moscow 1979), pp. 95.
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Varshal, G.M., Sobolev, G.A., Barsukov, V.L. et al. Separation of volatile components from rocks under mechanical loading as the source of hydrogeochemical anomalies preceding earthquakes. PAGEOPH 122, 463–477 (1984). https://doi.org/10.1007/BF00874612
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DOI: https://doi.org/10.1007/BF00874612