Advertisement

Izvestiya, Atmospheric and Oceanic Physics

, Volume 53, Issue 8, pp 781–790 | Cite as

Ring-Shaped Seismicity Structures in Southern California: Possible Preparation for Large Earthquake in the Los Angeles Basin

  • Yu. F. Kopnichev
  • I. N. Sokolova
Article
  • 21 Downloads

Abstract

Some characteristics of seismicity in Southern California are studied. It is found that ring-shaped seismicity structures with threshold magnitudes Mth of 4.1, 4.1, and 3.8 formed prior to three large (M w > 7.0) earthquakes in 1992, 1999, and 2010, respectively. The sizes of these structures are several times smaller than for intracontinental strike-slip events with similar magnitudes. Two ring-shaped structures are identified in areas east of the city of Los Angeles, where relatively large earthquakes have not occurred for at least 150 years. The magnitudes of large events which can occur in the areas of these structures are estimated on the basis of the previously obtained correlation dependence of ring sizes on magnitudes of the strike-slip earthquakes. Large events with magnitudes of M w = 6.9 ± 0.2 and M w = 8.6 ± 0.2 can occur in the area to the east of the city of Los Angeles and in the rupture zone of the 1857 great Fort Tejon earthquake, respectively. We believe that ring-structure formation, similarly to the other regions, is connected with deep-seated fluid migration.

Keywords

Earth’s crust ring-shaped seismicity structures large earthquakes deep-seated fluids 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Glubinnoe stroenie slaboseismichnykh regionov SSSR (The Deep Structure of Weakly Seismic Regions of the USSR), Shchukin, Yu.K. and Ryaba, V.Z, Eds., Moscow: Nauka, 1987.Google Scholar
  2. Kopnichev, Yu.F. and Sokolova, I.N., Ring seismicity in different depth ranges before large and great earthquakes in subduction zones, Dokl. Earth Sci., 2009a, vol. 425, no. 2, pp. 448–450.CrossRefGoogle Scholar
  3. Kopnichev, Yu.F. and Sokolova, I.N., Characteristics of ring seismicity in different depth ranges before large and great earthquakes in the Sumatra region, Dokl. Earth Sci., 2009b, vol. 429, no. 1, pp. 1385–1388.CrossRefGoogle Scholar
  4. Kopnichev, Yu.F. and Sokolova, I.N., On the correlation between seismicity characteristics and S-wave attenuation in the ring structures that appear before large earthquakes, J. Volkanol. Seismol., 2010, vol. 4, no. 6, pp. 396–411.CrossRefGoogle Scholar
  5. Kopnichev, Yu.F. and Sokolova, I.N., Annular seismicity structures and the March 11, 2011, earthquake (M w = 9.0) in Northeast Japan, Dokl. Earth Sci., 2011a, vol. 440, no. 1, pp. 1324–1327.CrossRefGoogle Scholar
  6. Kopnichev, Yu.F. and Sokolova, I.N., Inhomogeneities in the field of absorption of short-period S-waves near the source of the Maule earthquake (Chile, February 27, 2010, M w = 8.8) and their relation to seismicity and volcanism, Geofiz. Issled., 2011b, vol. 12, no. 3, pp. 22–33.Google Scholar
  7. Kopnichev, Yu.F. and Sokolova, I.N., Inhomogeneities in the field of S-wave absorption and ring structures of seismicity in the area of the Baikal Rift Zone, Vestn. Nats. Yad. Tsentra Resp. Kaz., 2012, no. 4, pp. 33–41.Google Scholar
  8. Kopnichev, Yu.F. and Sokolova, I.N., Ring structures of seismicity generated in the continental areas before strong earthquakes with different source mechanisms, Geofiz. Issled., 2013a, vol. 14, no. 1, pp. 5–15.Google Scholar
  9. Kopnichev, Yu.F. and Sokolova, I.N., Ring structures of seismicity generated before strong earthquakes in the northwestern and eastern Pacific, Vestn. Nats. Yad. Tsentra Resp. Kaz., 2013b, no. 2, pp. 131–140.Google Scholar
  10. Kopnichev, Yu.F. and Sokolova, I.N., Ring structures of seismicity in northern Chile and a successful forecast of the place and magnitude of the Iquique earthquake on April 1, 2014 (M w = 8.2), Vestn. Nats. Yad. Tsentra Resp. Kaz., 2015, no. 4, pp. 153–159.Google Scholar
  11. Letnikov, F.A., Sinergetika geologicheskikh sistem (Synergetics of Geological Processes), Novosibirsk: Nauka, 1992.Google Scholar
  12. Rodkin, M.V., Rol’ glubinnogo flyuidnogo rezhima v geodinamike i seismotektonike (The Role of the Deep Fluid Regime in Geodynamics and Seismotectonics), Moscow, 1993.Google Scholar
  13. Gold, T. and Soter, S., Fluid ascent through the solid lithosphere and its relation to earthquakes, Pure Appl. Geophys., 1984–1985, vol. 122, pp. 492–530.CrossRefGoogle Scholar
  14. Hier-Majumder, S. and Kohlstedt, D., Role of dynamic grain boundary wetting in fluid circulation beneath volcanic arcs, Geophys. Res. Lett., 2006, vol. 33, L08305.CrossRefGoogle Scholar
  15. Kennedy B., Kharaka Y., Ewans W. et al. Mantle fluids in the San Andreas fault system, California // Science. 1997. V. 278. P. 1278–1281.CrossRefGoogle Scholar
  16. Powell R., Weldon R. Evolution of the San Andreas fault // Ann. Rev. Earth Planet. Sci. 1992. V. 20. P. 431–468.CrossRefGoogle Scholar
  17. Richards-Dinger K., Shearer P. Earthquake locations in Southern California obtained using source specific station terms // J. Geophys. Res. 2000. V. 105. P. 10939–10960.CrossRefGoogle Scholar
  18. Scharer K., Biasi G., Weldon II R., Fumal T. Quasi-periodic recurrence of large earthquakes on the Southern San Andreas fault // Geology. 2010. V. 38, N 6. P. 555–558. doi 10.1130/G30746.1.10.1130/G30746.1CrossRefGoogle Scholar
  19. Sibson R., Moore J., Rankin A. Seismic pumping: a hydrothermal fluid transport mechanism // J. Geol. Soc. 1975. V. 131. P. 653–659.CrossRefGoogle Scholar
  20. Sieh K. Slip along the San Andreas fault associated with the great 1857 earthquake // Bull. Seismol. Soc. Amer. 1978. V. 68, N 5. P. 1421–1448.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Schmidt Institute of Physics of the EarthRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Geophysical Research of the Ministry of Energy of the Republic of KazakhstanAlmatyKazakhstan

Personalised recommendations