Abstract
The contemporary horizontal movements and deformations in the central and southern parts of the Baikal depression are analyzed, and their relationship with contemporary seismicity is studied. Based on the long-term measurements by the Baikal geodynamical GPS monitoring network, the refined estimate is obtained for the velocity of the divergence of the Siberian and Transbaikalian blocks, which is found to occur in the southeastward direction (130°) at 3.4 ± 0.7 mm per annum. This agrees with the parameters of the long-term extension component estimated from the geological data and with the direction of extension determined from the seismic data. The distribution of the displacement velocity across the strike of the rift, which gradually increases from one block to another, suggests a nonrigid behavior of the continental lithospheric plates at the divergent boundary. About 30% (1.0–1.5 mm per annum) of the total increase in the velocity is accommodated by the Baikal Basin. The strain rate within the trough reaches 3.1 × 10−8 yr−1 and decreases on either side across the structure. The character of distribution of the horizontal displacement velocities on the Baikal divergent boundary between the Eurasian and Amurian plates favors the model of passive rifting. The zones of highly contrasting topography and increased seismicity are localized within the area of contemporary deformations, and the seismic moment release rate directly depends on the strain rate. Here, the rate of the seismic moment release rate makes up a few percent of the geodetic moment accumulation rate calculated by the approach suggested by Anderson (1979). Based on the coherence between the graphs of the rates of geodetic moment accumulation and seismic moment release rate by the earthquakes with M ≥ 5.0 during the historical and instrumental observation periods, the contemporary seismic hazard for the South Baikal Basin could be assessed at a level of seismic event with M = 7.5–7.6.
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References
Anderson, J.G., Estimating the seismicity from geological structure for seismic-risk studies, Bull. Seism. Soc. Am., 1979, vol. 69, pp. 135–158.
Bird, P., Kagan, Y.Y., Jackson, D.D., Schoenberg, F.P., and Werner, M.J., Linear and nonlinear relations between relative plate velocity and seismicity, Bull. Seism. Soc. Am., 2009, vol. 99, no. 6, pp. 3097–3113. doi: 10.1785/0120090082
Calais, E., Lesne, O., Deverchere, J., Sankov, V.A., Lukhnev, A.V., Miroshnichenko, A.I., and Levi, K.G., GPS measurements of crustal deformation in the Baikal rift zone, Siberia, Geophys. Res. Lett., 1998, vol. 25, no. 21, pp. 4003–4007.
Calais, E., Vergnolle, M., San’kov, V., Lukhnev, A., Miroshnitchenko, A., Amarjargal, Sh., and Deverchere, J., GPS measurements of crustal deformation in the Baikal-Mongolia area (1994–2002): implications for current kinematics of Asia, J. Geophys. Res., 2003, vol. 108, B10.2501. doi: 10.1029/2002JB002373
Chen, W.P. and Molnar, P., Seismic moments of major earthquakes and the average rate of slip in central Asia, J. Geophys. Res, 1977, vol. 82, pp. 2945–2969.
Chipizubov, A.V., Rekonstruktsiya i prognoz izmenenii seismichnosti Zemli (Reconstruction and Forecast of Seismicity of the Earth), Irkutsk: IZK SO RAN, 2008.
Déverchère, J., Petit, C., Gileva, N., Radziminovich, N., Melnikova, V., and San’kov, V., Depth distribution of earthquakes in the Baikal rift system and its implications for the rheology of the lithosphere, Geophys. J. Int, 2001, vol. 146, pp. 714–730.
Gatinsky, Yu.G. and Rundquist, D.V., Geodynamics Of Evrasia: plate tectonics and block tectonics, Geotectonics, 2004, vol. 38, no. 1, pp. 1–16.
Gol’din, S.V., Suvorov, V.D., Makarov, P.V., and Stefanov, Yu.P., An instability gravity model for the structure and stress-strain state of lithosphere in the Baikal Rift, Rus. Geol. Geophys., 2006, vol. 46, no. 10, pp. 1079–1090.
Golenetskii, S.I., Zemletryaseniya v Irkutske (Earthquakes in Irkutsk), Irkutsk: Imya, 1997.
Herring, T.A., Davis, J.L., and Shapiro, I.I., Geodesy by radio interferometry: the application of Kalman filtering to the analysis of very long baseline interferometry data, J. Geophys. Res., 1990, vol. 95, pp. 12561–12581.
Hutchinson, D.R., Golmshtok, A.Yu., Zonenshain, L.P., Mur, T.K., Sholtz, K.A., and Klitgord, K.D., Structure of sedimentary strata of Lake Baikal from multichannel seismic data, Geol. Geofiz., 1993, vol. 34, nos. 10–11, pp. 25–36.
Ivanov, A.V., Sankov, V.A., Smekalin, O.P., and Chipizubov, A.V., Recurrence interval of strong earthquakes estimation within Main Sayan and Tunka fault zones by 14C data and statistical analysis, 2009, vol. 36, no. 2, pp. 70–80.
Jin, Sh., Park, P.-H., and Zhu, W., Micro-plate tectonics and kinematics in northeast Asia inferred from a dense set of GPS observations, Earth Planet. Sci. Lett., 2007, vol. 257, pp. 486–496.
Keir, D., Ebinger, C.J., Stuart, G.W., Daly, E., and Ayele, A., Strain accommodation by magmatism and faulting as rifting proceeds to breakup: seismicity of the northern Ethiopian rift, J. Geophys. Res., 2006, vol. 111, B05314. doi: 10.1029/2005JB003748
King, R.W. and Bock, Y., Documentation for the GAMIT GPS Software Analysis. Release 10.5, Inst. of Technology and Scripps Inst. of Oceanography, MA, 2000.
Kogan, M.G., Steblov, G.M., King, R.W., Herring, T.A., Frolov, D.I., Egorov, S.G., Levin, V.Y., Lerner-Lam, A., and Jones, A., Geodetic constraints on the rigidity and relative motion of Eurasia and North America, Geophys. Rev. Lett., 2000, vol. 27, no. 14, pp. 2041–2044.
Kogan, L., Fisseha, S., Bendick, R., Reilinger, R., McClusky, S., King, R., and Solomon, T., Lithospheric strength and strain localization in continental extension from observations of the East African Rift, J. Geophys. Res., 2012, vol. 117, no. B3. doi: 10.1029/2011JB008516
Koravos, G.Ch., Main, I.G., Tsapanos, T.M., and Musson, R.M.W., Maximum earthquake magnitudes in the Aegean area constrained by tectonic moment release rates, Geophys. J. Int., 2003, vol. 152, pp.94–112.
Kostrov, B.V., Mekhanika ochaga tektonicheskogo zemletryaseniya (Mechanics of the Source of a Tectonic Earthquake), Moscow: Nauka, 1975.
Krylov, C.V., Seleznev, V.C., Solov’ev, V.M., Petrik, G.V., and Shelud’ko, I.F., Seismic reflection tomography of the Baikal rift basin, Dokl. Rus. Akad. Nauk, 1995, vol. 345, no. 5, pp. 674–677.
Larson, K.M., Burgmann, R., Bilham, R., and Freymueller, J.T., Kinematics of the India-Eurasia collision zone from GPS measurements, J. Geophys. Res., 1999, vol. 104, no. B1, pp. 1077–1093.
Leonov, Yu.G., Continental rifting: Modern Views, Problems, and Solutions, Geotectonics, 2001, vol. 35, no. 2, pp. 81–92.
Logatchev, N.A. and Zorin, Yu.A., Evidence and causes of the two-stage development of the Baikal rift, Tectonophysics, 1987, vol. 143, nos. 1–3, pp. 225–234.
Logachev, N.A., Bornyakov, S.A., and Sherman, S.I., Mechanism of the Baikal Rift Zone formation based on results of physical modeling, Dokl. Earth Sci., 2000, vol. 373A, no. 6, pp. 980–982.
Logachev, N.A., Historic core of the Baikal Rift Zone, Dokl. Earth Sci., 2001, vol. 376, no. 1, pp. 43–47.
Lukhnev, A.V., San’kov, V.A., Miroshnichenko, A.I., Levi, K.G., Bashkuev, Yu.B., Dembelov, M.G., Zalutskii, V.T., Calais, E., Déverchère, J., Vernol, M., Bekhtur, B., and Amarzhargal, Sh., New data on recent tectonic deformations in the south mountainous framing of the Siberian Platform, Dokl. Earth Sci., 2003, vol. 389, no. 2, pp. 263–266.
Lukhnev, A.V., San’kov, V.A., Miroshnichenko, A.I., Ashurkov, S.V., and Kale, E., GPS rotation and strain rates in the Baikal-Mongolia region, Rus. Geol. Geophys., 2010, vol. 51, no. 7, pp. 785–793.
Mats, V.D., Ufimtsev, G.F., Mandel’baum, M.M., Alakshin, A.M., Pospeev, A.V., Shimaraev, M.N., and Khlystov, O.V., Kainozoi Baikal’skoi riftovoi vpadiny: Stroenie i geologicheskaya istoriya (The Cenozoic of the Baikal Rift: Structure and Geological History), Novosibirsk: SO RAN, Geo, 2001.
Molnar, P. and Tapponnier, P., Cenozoic tectonics of Asia: effects of a continental collision, Science, 1975, vol. 189, pp. 1959–1982.
Pancha, A., Anderson, J.G., and Kreemer, C., Comparison of seismic and geodetic scalar moment rates across the Basin and Range Province, Bull. Seismol. Soc. Am., 2006, vol. 96, no. 1, pp. 11–323. doi: 10.1785/0120040166
Petit, C., Déverchère, J., Houdry, F., Sankov, V.A., Melnikova, V.I., and Delvaux, D., Present-day stress field changes along the Baikal rift and tectonic implication, Tectonics, 1996, vol. 15, no. 6, pp. 1171–1191.
Petit, C. and Déverchère, J., Structure and evolution of the Baikal rift: a synthesis, Geochem. Geophys. Geosys., 2006, vol. 7, Q11016. doi: 10.1029/2006GC001265
Radziminovich, N., Déverchère, J., Melnikova, V., San’kov, V., and Giljova, N., The 1999 Mw 6.0 earthquake sequence in the southern Baikal rift, Asia, and its seismotectonic implications, Geophys. J. Int., 2005, vol. 161, pp. 387–400.
Radziminovich, N.A., Melnikova, V.I., San’kov, V.A., and Levi, K.G., Seismicity and seismotectonic deformations of the crust in the Southern Baikal Basin, Izv., Phys. Solid Earth, 2006, vol. 42, no. 11, pp. 904–920.
San’kov, V., Déverchère, J., Gaudemer, Y., Houdry, F., and Filippov, A., Geometry and rate of faulting in the North Baikal Rift, Siberia, Tectonics, 2000, vol. 19, no. 4, pp. 707–722.
San’kov, V.A., Parfeevets, A.V., Lukhnev, A.V., Miroshnichenko, A.I., and Ashurkov, S.V., Late Cenozoic geodynamics and mechanical coupling of crustal and upper mantle deformations in the Mongolia-Siberia mobile region, Geotectonics, 2011, vol. 45, no. 5, pp. 378–393.
Saria, E., Calais, E., Stamps, D.S., Delvaux, D., and Hartnady, C.J.H., Present-day kinematics of the East African Rift, J. Geophys. Res., 2014, vol. 119, no.4, pp. 3584–3600. doi: 10.1002/2013JB010901
Solonenko, V.P., Khil’ko, S.D., Khromovskikh, V.S., et al., W Seismicheskoe raionirovanie Vostochnoi Sibiri i ego geologo-geofizicheskie osnovy (Seismic Zoning of East Siberia and its Geological-Geophysical Basis), Novosibirsk: Nauka, 1977.
Suvorov, V.D. and Mishen’kina, Z.P., Structure of sedimentary cover and basement beneath the South Basin of Lake Baikal inferred from seismic profiling, Rus. Geol. Geophys., 2005, vol. 46, no. 11, pp. 1141–1149.
Suvorov, V.D. and Tubanov, Ts.A., Distribution of local earthquakes in the crust beneath central Lake Baikal, Rus. Geol. Geophys., 2008, vol. 49, no. 8, pp. 611–620.
Working Group on California Earthquake Probabilities, Seismic hazards in southern California: probable earthquakes, 1994–2024, Bull. Seism. Soc. Am., 1995, vol. 85, pp. 379–439.
Zorin, Yu.A. and Turutanov, E.Kh., Plumes and geodynamics of the Baikal Rift Zone, Rus. Geol. Geophys., 2005, vol. 45, no. 7, pp. 669–682.
Zorin, Yu.A., Turutanov, E.Kh., Kozhevnikov, V.M., Rasskazov, S.V., and Ivanov, A.V., The nature of Cenozoic upper mantle plumes in East Siberis (Russia) and Central Mongolia, Rus. Geol. Geophys., 2006, vol. 46, no. 7, pp. 1046–1059.
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Original Russian Text © V.A. Sankov, A.V. Lukhnev, A.I. Miroshnitchenko, A.A. Dobrynina, S.V. Ashurkov, L.M. Byzov, M.G. Dembelov, E. Calais, J. Déverchère, 2014, published in Fizika Zemli, 2014, No. 6, pp. 70–79.
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Sankov, V.A., Lukhnev, A.V., Miroshnitchenko, A.I. et al. Contemporary horizontal movements and seismicity of the south Baikal Basin (Baikal rift system). Izv., Phys. Solid Earth 50, 785–794 (2014). https://doi.org/10.1134/S106935131406007X
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DOI: https://doi.org/10.1134/S106935131406007X