A method of inverting seismic wave amplitudes from mining tremors is proposed to reveal their mechanism. A simple shear-implosive model of a mechanism is proposed. The shapes of theoretical and observed radiation patterns are compared in the least squares norm and the parameters describing the shear-slip together with the ratio of implosive and shear dislocations are optimized. The efficiency of the method, even in the case of a small number of stations, is demonstrated by applying it to weak mining tremors from two mine regions in Czechoslovakia.
The weak mining tremors are found to be of a predominantly shear mechanism with a clear coincidence of nodal planes to local tectonics, which could imply their tectonic nature.
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Båth, M. (1984),Rockburst seismology (Proc. 1st Inc. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg) pp. 7–15.
Brune, J. (1970),Tectonic stress and the spectra of seismic shear waves from earthquakes, J. Geophys. Res.75, 4997–5009.
Buben, J. (1969),Seismic investigation of mining tremors, C. Sci. Diss. Inst. of Geol. and Geotech., Prague, unpublished.
Gibowicz, S. J. (1979),Space and time variations of the frequency-magnitude relation for mining tremors in the Szombierki coal mine in Upper Silesia, Poland, Acta Geophys. Pol.27, 39–49.
Gibowicz, S. J. (1981),The Belchatow, Poland, earthquake of 29 November 1980 and its tectonic and mining associations (Proc. 2nd Int. Symposium on the Analysis of Seismicity and on Seismic Hazard, Liblice, Czechoslovakia, 18–23 May) pp. 170–185.
Gibowicz, S. J. (1984),The mechanism of large mining tremors in Poland (Proc. 1st Int. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg) pp. 17–28.
Gibowicz, S. J., Cichowicz, A., andDybel, T. (1977),Seismic moment and source size of mining tremors in Upper Silesia, Poland, Acta Geophys. Pol.25, 201–218.
Gibowicz, S. J., Bober, A., Cichowicz, A., Droste, Z., Dychtowicz, Z., Hordejuk, J., Kazimierzyk, M., andKijko, A. (1979),Source study of the Lubin, Poland, tremor of 24 March 1977, Acta Geophys. Pol.27, 3–38.
Haskell, N. (1964),Total energy and energy spectral density of elastic wave radiation from propagating faults, Bull. Seism. Soc. Am.54, 1811–1842.
James, F. andRoos, M. (1975),Function minimization and error analysis, Computer Physics Communications10, 343–367.
Jech, J. (1988),Seismic tomography in the Ostrava-Karviná mining region, Pure Appl. Geophys.129, 3/4, 597–608.
Kisslinger, C. (1976),A review on theories of mechanisms of induced seismicity, Eng. Geol.10, 85–98.
Knotek, S. andVajter, Z. (1984),Seismic activity of eastern part of Ostrava-Karviná Region (in Czech), Seismological Centrum of the ČSA Mine, Karviná Mines, unpublished.
Konečný, P., Knejzlík, J., Kozák, J., andVeselý, M. (1987)The development of mining-induced seismicity (Proc. Int. Congress on Rock Mechanics, Montreal) in press.
Kozák, J., Rudajev, V., andŠílený, J. (1985),Possible model of rockburst mechanism with implosive component, Publs. Inst. Geoph. Pol. Acad. Sci.M-6, 7–19.
Madariaga, R. (1976),Dynamics of an expanding circular fault, Bull. Seism. Soc. Am.66, 639–666.
McGarr, A. (1984),Some applications of seismic source mechanism studies to assessing underground hazard (Proc. Ist Int. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg), pp. 199–208.
McGarr, A., Green, R. W. E., andSpottiswoode, S. M. (1981),Strong ground motion of mine tremors: Some implications for near-source ground motion parameters, Bull. Seism. Soc. Am.71, 295–319.
Přibyl, A. andRudajev, V. (1969),On mining tremors and their interpretation with respect to influence of rock massif geology in Kladno Mine Region (in Czech) (Proc. Int. Symp. on Mine Geodesy, Geology and Geometry of Raw Material Deposits, Prague).
Report of the Geophys. Inst. Czechosl. Acad. Sci. (1987),Space location of mining tremor foci on the basis of observations of deep stations in Karviná Part of Ostrava-Karviná Region, Prague, unpublished.
Roček, V. andRudajev, V. (1976),The rock bursts in the Kladno region and possibilities of their prevention (in Czech, with English abstract), Publs. Inst. Geophys. Pol. Acad. Sci.97, 3–14.
Rudajev, V. (1986),Seismic manifestation of mining tremors (in Czech), D. Sci. Diss., Inst. of Geol. and Geotech., Prague, unpublished.
Smith, R. B., Winkler, P. L., Anderson, J. G., andScholz, Ch. H. (1974),Source mechanisms of microearthquakes associated with underground mines in Eastern Utah, Bull. Seism. Soc. Am.64, 1295–1317.
Spottiswoode, S. M. andMcGarr, A. (1975),Source parameters of tremors in a deep-level gold mine, Bull. Seism. Soc. Am.65, 93–112.
Šiška, L. andKonečný, P. (1983),Longwall mining of coal from seams liable to rock bursts — experiences in Ostrava-Karviná coal basin, Czechoslovakia, J. of Mines, Metals and Fuels, Spec. Number on Update on Longwall Mining-Evolving Trends, 363–367.
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Šílený, J. The mechanism of small mining tremors from amplitude inversion. PAGEOPH 129, 309–324 (1989). https://doi.org/10.1007/BF00874512
- Inversion ofP- andS-wave amplitudes
- weak mining tremors
- shear-implosive source model