Articles | Volume 21, issue 7
Nat. Hazards Earth Syst. Sci., 21, 2233–2244, 2021
Nat. Hazards Earth Syst. Sci., 21, 2233–2244, 2021

Research article 23 Jul 2021

Research article | 23 Jul 2021

Spatiotemporal heterogeneity of b values revealed by a data-driven approach for the 17 June 2019 MS 6.0 Changning earthquake sequence, Sichuan, China

Changsheng Jiang et al.

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Cited articles

Aktar, M., Özalaybey, S., Ergin, M., Karabulut, H., Bouin, M.-P., Tapırdamaz, C., Biçmen, F., Yörük, A., and Bouchon, M.: Spatial variation of aftershock activity across the rupture zone of the 17 August 1999 Izmit earthquake, Turkey, Tectonophysics, 391, 325–334,, 2004. 
Amelung, F. and King, G.: Earthquake scaling laws for creeping and non-creeping faults, Geophys. Res. Lett., 24, 507–510,, 1997. 
Amorèse, D., Grasso, J.-R., and Rydelek, P.: On varying b-values with depth, results from computer-intensive tests for Southern California, Geophys. J. Int., 180, 347–360,, 2010. 
Bayrak, E., Yılmaz, S., and Bayrak, Y.: Temporal and spatial variations of Gutenberg–Richter parameter and fractal dimension in Western Anatolia, Turkey, J. Asian Earth Sci., 138, 1–11,, 2017. 
Das, S. and Scholz, C.: Theory of time-dependent rupture in the Earth, J. Geophys. Res., 86, 6039–6051,, 1981. 
Short summary
The b value is a controversial parameter that has the potential to identify the location of an upcoming strong earthquake. We conducted a case study using a newly developed algorithm that can overcome the subjectivity of calculation. The results confirmed the scientific significance of the b value for seismic hazard analysis and revealed that fluid intrusion may have been the cause of the overactive aftershocks of the studied earthquake.
Final-revised paper