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Decay of aftershock density with distance indicates triggering by dynamic stress

Author

Listed:
  • K. R. Felzer

    (US Geological Survey)

  • E. E. Brodsky

    (University of California Santa Cruz)

Abstract

Aftershock tactics Aftershocks, the most common type of earthquake, were thought to be triggered by static stresses induced by an earlier ‘mainshock’. Recent work suggested that dynamic stresses, or shaking, may also be a factor, and a study based on analysis of the earthquake locations in the 1984–2002 Southern California catalogue confirms that view. Precise measurements of the decay of aftershock density with distance show that the probability of an aftershock is consistent with a maximum amplitude of seismic shaking at distances of 0.2 to 50 km from a mainshock.

Suggested Citation

  • K. R. Felzer & E. E. Brodsky, 2006. "Decay of aftershock density with distance indicates triggering by dynamic stress," Nature, Nature, vol. 441(7094), pages 735-738, June.
    • Handle: RePEc:nat:nature:v:441:y:2006:i:7094:d:10.1038_nature04799
    DOI: 10.1038/nature04799
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    Cited by:

    1. Telesca, Luciano & Golay, Jean & Kanevski, Mikhail, 2015. "Morisita-based space-clustering analysis of Swiss seismicity," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 419(C), pages 40-47.
    2. Juan A. Serrano & Edén Bojórquez & Juan Bojórquez & Alfredo Reyes-Salazar & Ignacio Torres & Jorge Ruiz-García & Antonio Formisano & Eduardo Fernández & Herian Leyva & Mario D. Llanes-Tizoc, 2023. "Ratio of Hysteretic and Input Energy Spectra for Nonlinear Structures under Seismic Sequences," Sustainability, MDPI, vol. 15(6), pages 1-30, March.
    3. Blandine Gardonio & David Marsan & Thomas Bodin & Anne Socquet & Stéphanie Durand & Mathilde Radiguet & Yanick Ricard & Alexandre Schubnel, 2024. "Change of deep subduction seismicity after a large megathrust earthquake," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    4. Q. Xiong & M. R. Brudzinski & D. Gossett & Q. Lin & J. C. Hampton, 2023. "Seismic magnitude clustering is prevalent in field and laboratory catalogs," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    5. Holliday, James R. & Turcotte, Donald L. & Rundle, John B., 2008. "Self-similar branching of aftershock sequences," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 387(4), pages 933-943.
    6. Zhou, Yu & Leung, Yee & Chan, Lung Sang, 2017. "Oscillatory tendency of interevent direction in earthquake sequences," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 478(C), pages 120-130.

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