Dynamic triggering of earthquakes is promoted by crustal heterogeneities and bimaterial faults

Langer, Sebastian; Finzi, Yaron; Olsen-Kettle, Louise

doi:10.1016/j.pepi.2014.10.012

Cited by 3 publications

(2 citation statements)

References 47 publications

(50 reference statements)

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“…"PGV", "f" and "SSCA", respectively, stand for "peak ground velocity", "frequency" and "static stress change amplitude". The symbols used for volcano types are identical to Table 1. by topographic irregularities, thus resulting in significantly higher local PGVs 42,187,[191][192][193][194] . We focus on two possible cases: strong and moderate PGVs.…”

Section: Earthquakesmentioning

confidence: 99%

A review framework of how earthquakes trigger volcanic eruptions

et al. 2021

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It is generally accepted that tectonic earthquakes may trigger volcanic activity, although the underlying mechanisms are poorly constrained. Here, we review current knowledge, and introduce a novel framework to help characterize earthquake-triggering processes. This framework outlines three parameters observable at volcanoes, namely magma viscosity, open- or closed-system degassing and the presence or absence of an active hydrothermal system. Our classification illustrates that most types of volcanoes may be seismically-triggered, though require different combinations of volcanic and seismic conditions, and triggering is unlikely unless the system is primed for eruption. Seismically-triggered unrest is more common, and particularly associated with hydrothermal systems.

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Section: Earthquakesmentioning

confidence: 99%

A review framework of how earthquakes trigger volcanic eruptions

et al. 2021

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“…Aside from, and in addition to, the simple concept of a threshold stress, mechanisms proposed to explain dynamically triggered seismicity have included dynamic interactions between material heterogeneities, with subsequent waveform amplification (Langer et al 2015), viscous creep, granular flow, subcritical crack growth, and permeability enhancement.…”

Section: Dynamic Triggeringmentioning

confidence: 99%

Dynamic Considerations for Induced Seismicity

Walker

Aminzadeh

2016

SPE Western Regional Meeting

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Recent interest in induced seismicity that has brought the topic into the spotlight has largely focused on hazards related to fluid injection. While drawing needed attention to an important topic, such focus may lead to a simplistic treatment of the entire process relating to induced seismic hazard. The challenge is as complex as it is poorly understood, and while it is true that fluid injection and earthquakes seem to appear in tandem, one cannot automatically assume that the problem can be described with only one variable.In this work, we consider the impact that dynamic influences such as transient stresses from passing seismic waves can impart on a fault at risk for failure. Review of geophysical literature reveals a rich foundation based in a strong respect scientific inquiry, often in stark contrast to meager data available. Beginning from an initial consideration of effects from transient dynamic stresses, it soon becomes apparent that not only is permeability affected by transient seismic stresses, but that the permeability itself behaves dynamically. We find that past literature on dynamic permeability contains useful insight, however the focus of previous work proves divergent from those of the Petroleum Industry, and prior investigation remains unsatisfactory. Additionally, review of data resources available for areas of the mid-continental United States subject to increased seismic activity suggest that an excellent, and as of yet unused, data set for the study of dynamic permeability may have been generated. Observational data suggests that in the wake of seismic activity, permeability must be considered as a dynamic value.

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