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Nucleation of the 1999 Izmit earthquake by a triggered cascade of foreshocks

Nature Geoscience volume 11, pages 531–535 (2018)Cite this article

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Abstract

Much of what we know about the nucleation of earthquakes comes from the temporal and spatial relationship of foreshocks to the initiation point (hypocentre) of the mainshock. The 1999 Mw 7.6 Izmit, Turkey, earthquake was preceded by a 44-minute-long foreshock sequence, which built in intensity as the time of the mainshock approached. Here we apply a series of high-resolution methods to the sparse seismological observations to determine the spatial and temporal relation of the foreshocks to the mainshock hypocentre. We find that the foreshocks form a contiguous series of ruptures that progressed systematically from west to east towards the mainshock hypocentre, located at the extreme eastern edge of the foreshocks. The Izmit foreshock sequence occurred as a triggered cascade in which one foreshock loads the adjacent fault patch causing it to fail, with the mainshock initiation no different than another foreshock. We find no evidence to support a hypothesized precursory aseismic driving process. If we are to resolve the role of aseismic deformation and possible role of fluid overpressure in the earthquake nucleation process it will likely require measurements made in the near field of the hypocentre.

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Fig. 1: Location map for the Izmit earthquake showing seismographs (triangles) used to locate the four large foreshocks.
Fig. 2: Cluster analysis of the four largest foreshocks.
Fig. 3: East–west cross sections of the evolving shear stress changes on the fault plane during the foreshock sequence to the 1999 Izmit earthquake.
Fig. 4: P wave spectral ratios for the 23:49 and 23:59 foreshocks computed using event 23:41 as the denominator and normalized at 1 Hz.

References

  1. Jones, L. M. & Molnar, P. Some characteristics of foreshocks and their possible relationship to earthquake prediction and premonitory slip on faults. J. Geophys. Res. Solid Earth 84, 3596–3608 (1979).

    Article  Google Scholar 

  2. Ellsworth, W. L. & Beroza, G. C. Seismic evidence for a earthquake nucleation phase. Science 268, 851–855 (1995).

    Article  Google Scholar 

  3. Abercrombie, R. E. & Mori, J. Occurrence patterns of foreshocks to large earthquakes in the western United States. Nature 381, 303–307 (1996).

    Article  Google Scholar 

  4. Dodge, D. A., Beroza, G. C. & Ellsworth, W. L. Detailed observations of California foreshock sequences: implications for the earthquake initiation process. J. Geophys. Res. 101, 22371–22392 (1996).

    Article  Google Scholar 

  5. Helmstetter, A., & Sornette, D. Foreshocks explained by cascades of triggered seismicity. J. Geophys. Res. https://doi.org/10.1029/2003JB002409 (2003).

  6. Bouchon, M., Durand, V., Marsan, D., Karabulut, H. & Schmittbuhl, J. The long precursory phase of most large interplate earthquakes. Nat. Geosci. 6, 299–302 (2013).

    Article  Google Scholar 

  7. Mignan, A. The debate on the prognostic value of earthquake foreshocks: a meta-analysis. Sci. Rep. 4, 4099 (2014).

    Article  Google Scholar 

  8. Uchide, T. & Ide, S. Scaling of earthquake rupture growth in the Parkfield area: self‐similar growth and suppression by the finite seismogenic layer. J. Geophys. Res. Solid Earth 115, B11302 (2010).

    Article  Google Scholar 

  9. Noda, S. & Ellsworth, W. L. Scaling relation between earthquake magnitude and the departure time from P wave similar growth. Geophys. Res. Lett. 43, 9053–9060 (2016).

    Article  Google Scholar 

  10. Dieterich, J. H. Pre-seismic fault slip and earthquake prediction. J. Geophys. Res. 83, 3940–3948 (1978).

    Article  Google Scholar 

  11. Beeler, N. M. Review of the physical basis of laboratory-derived relations for brittle failure and their implications for earthquake occurrence and earthquake nucleation. Pure Appl. Geophys. 161, 1853–1876 (2004).

    Article  Google Scholar 

  12. Johnston, M. J. S., Borcherdt, R. D., Linde, A. T. & Gladwin, M. T. Continuous borehole strain and pore pressure in the near field of the 28 September 2004 M 6.0 Parkfield, California, earthquake: Implications for nucleation, fault response, earthquake prediction, and tremor. Bull. Seismol. Soc. Am. 96, S56–S72 (2006).

    Article  Google Scholar 

  13. Christophersen, A. & Smith, E. G. Foreshock rates from aftershock abundance. Bull. Seismol. Soc. Am. 98, 2133–2148 (2008).

    Article  Google Scholar 

  14. Wyss, M. & Brune, J. N. Regional variations of source properties in southern California estimated from the ratio of short-to long-period amplitudes. Bull. Seismol. Soc. Am. 61, 1153–1167 (1971).

    Google Scholar 

  15. Fukao, Y. & Furumoto, M. Hierarchy in earthquake size distribution. Phys. Earth Plant. Inter. 37, 149–168 (1985).

    Article  Google Scholar 

  16. Bouchon, M. et al. Extended nucleation of the 1999 M w 7.6 Izmit earthquake. Science 331, 877–880 (2011).

    Article  Google Scholar 

  17. Ellsworth, W. L. in Urban Disaster Mitigation: The Role of Science and Technology (eds Cheng, F. Y. & Sheu, M.-S.) 1–14 (Elsevier, Oxford, 1995).

  18. Madariaga, R. Dynamics of an expanding circular fault. Bull. Seismol. Soc. Am. 66, 639–666 (1976).

    Google Scholar 

  19. Huang, Y., Ellsworth, W. L. & Beroza, G. C. Stress drops of induced and tectonic earthquakes in the central United States are indistinguishable. Sci. Adv. 3, e1700722 (2017).

    Google Scholar 

  20. Andrews, D. J. A stochastic fault model: 1. static case. J. Geophys. Res. 85, 3867–3877 (1980).

    Article  Google Scholar 

  21. Shearer, P. M. Space-time clustering of seismicity in California and the distance dependence of earthquake triggering. J. Geophys. Res. Solid Earth 117, B10306 (2012).

    Article  Google Scholar 

  22. Bouchon, M. et al. Space and time evolution of rupture and faulting during the 1999 Izmit (Turkey) earthquake. Bull. Seismol. Soc. Am. 92, 256–266 (2002).

    Article  Google Scholar 

  23. Harris, R. A., Dolan, J. F., Hartleb, R. & Day, S. M. The 1999 Izmit, Turkey, earthquake: a 3D dynamic stress transfer model of intraearthquake triggering. Bull. Seismol. Soc. Am. 92, 245–255 (2002).

    Article  Google Scholar 

  24. Kaneko, Y. & Shearer, P. M. Seismic source spectra and estimated stress drop from cohesive-zone models of circular subshear rupture. Geophys. J. Int. 197, 1002–1015 (2014).

    Article  Google Scholar 

  25. Sibson, R. H. Implications of fault-valve behavior for rupture nucleation and recurrence. Tectonophysics 211, 283–293 (1992).

    Article  Google Scholar 

  26. Shelly, D. R., Ellsworth, W. L. & Hill, D. P. Fluid-faulting evolution in high definition: connecting fault structure and frequency-magnitude variations during the 2014 Long Valley Caldera, California, earthquake swarm. J. Geophys. Res. Solid Earth 121, 1776–1795 (2016).

    Article  Google Scholar 

  27. Guglielmi, Y., Cappa, F., Avouac, J.-P., Henry, P. & Elsworth, D. Seismicity triggered by fluid injection-induced aseismic slip. Science 348, 1224–1226 (2015).

    Article  Google Scholar 

  28. Dunham, E. M. & Ogden, D. E. Guided waves along fluid-filled cracks in elastic solids and instability at high flow rates. J. Appl. Mech. 79, 031020 (2012).

    Article  Google Scholar 

  29. Boatwright, J. A dynamic model for far-field acceleration. Bull. Seismol. Soc. Am. 72, 1049–1068 (1982).

    Google Scholar 

  30. Gusev, A. A. Descriptive statistical model of earthquake source radiation and its application to an estimation of short-period strong motion. Geophys. J. Int. 74, 787–808 (1983).

    Google Scholar 

  31. Mai, P. M. & Beroza, G. C. A spatial random field model to characterize complexity in earthquake slip. J. Geophys. Res. https://doi.org/10.1029/2001JB000588 (2002).

  32. Abercrombie, R. E. Stress drops of repeating earthquakes on the San Andreas fault at Parkfield. Geophys. Res. Lett. 41, 8784–8791 (2014).

    Article  Google Scholar 

  33. Mori, J. Rupture directivity and slip distribution of the M 4.3 foreshock to the 1992 Joshua Tree earthquake, Southern California. Bull. Seismol. Soc. Am. 86, 805–810 (1996).

    Google Scholar 

  34. Savage, H. M. et al. Scientific exploration of induced seismicity and stress (SEISMS). Sci. Drill. 23, 57–63 (2017).

    Article  Google Scholar 

  35. Barka, A. et al. The surface rupture and slip distribution of the 17 August 1999 Izmit earthquake (M 7.4), North Anatolian fault. Bull. Seismol. Soc. Am. 92, 43–60 (2002).

    Article  Google Scholar 

  36. Saroglu, F., Emre, O. & Kuscu, I. Active Fault Map of Turkey (General Directorate of Mineral Research and Exploration, Ankara, 1992).

    Google Scholar 

  37. Geller, R. & Mueller, C. Four similar earthquakes in Central California. Geophys. Res. Lett. 7, 821–824 (1980).

    Article  Google Scholar 

  38. Waldhauser, F. & Ellsworth, W. L. A double-difference earthquake location algorithm: method and application to the northern Hayward fault, California. Bull. Seismol. Soc. Am. 90, 1353–1368 (2000).

    Article  Google Scholar 

  39. Poupinet, G., Ellsworth, W. L. & Frechet, J. Monitoring velocity variations in the crust using earthquake doublets: an application to the Calaveras fault, California. J. Geophys. Res. 89, 5719–5731 (1984).

    Article  Google Scholar 

  40. Waldhauser, F. hypoDD--A Program to Compute Double-Difference Hypocenter Locations (hypoDD version 1.0-03/2001) Report 01-113 (US Geological Survey, 2001).

  41. Imanishi, K. & Ellsworth, W. L. in Earthquakes: Radiated Energy and the Physics of Faulting, 1 (eds Abercrombie, R. et al.) 81–90 (Geophysical Monograph Series 170, American Geophysical Union, Washington DC, 2013).

  42. Boatwright, J. A spectral theory for circular seismic sources: simple estimates of source dimension, dynamic stress drop, and radiated seismic energy. Bull. Seismol. Soc. Am. 70, 1–28 (1980).

    Google Scholar 

  43. Sato, T. & Hirasawa, T. Body wave spectra from propagating shear cracks. J. Phys. Earth 21, 415–431 (1973).

    Article  Google Scholar 

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Acknowledgements

We thank the seismic network operators of Kandilli Observatory and Earthquake Research Institute, the Marmara Research Center, GFZ Potsdam and Turkish Disaster Affairs for access to their seismic recordings of the Izmit earthquake foreshock sequence. R. Abercrombie, G. Beroza, M. Brehme, E. Dunham and F. Tilmann provided valuable input.

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  1. Department of Geophysics, Stanford University, Stanford, CA, USA

    William L. Ellsworth

  2. Geodesy Department, Kandilli Observatory and Earthquake Research Institute, Boğaziçi University, İstanbul, Turkey

    Fatih Bulut

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Correspondence to William L. Ellsworth.

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Ellsworth, W.L., Bulut, F. Nucleation of the 1999 Izmit earthquake by a triggered cascade of foreshocks. Nature Geosci 11, 531–535 (2018). https://doi.org/10.1038/s41561-018-0145-1

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