a_fb.val: Underground feedback activation
In amignan/rseismTLS: Induced Seismicity Traffic Light System
Description
Usage
Arguments
Details
Value
References
Description
Estimates the underground feedback activation afb, which is the
a-value of the Gutenberg-Richter law (Gutenberg and Richter, 1944)
normalized by the injected volume (e.g., Dinske and Shapiro, 2013).
Usage
1
a_fb.val(Ntot, b, m0, Vtot)
Arguments
Ntot
total number of events above m0 for Vtot
b
the slope of the Gutenberg-Richter law
m0
minimum magnitude threshold
Vtot
total volume of fluids injected
Details
This is equivalent to Shapiro's Seismogenic Index (e.g., Dinske and Shapiro, 2013)
SI = log10(Ntot / Vtot) + b * m0
but here theoretically agnostic, following the notation of Mignan et al. (2017).
Value
The numeric value of the underground feedback activation
References
Dinske C., Shapiro S.A. (2013), Seismotectonic state of reservoirs inferred
from magnitude distributions of fluid-induced seismicity. J. Seismol., 17, 13-25
doi: 10.1007/s10950-012-9292-9
Gutenberg B., Richter C.F. (1944), Frequency of earthquakes in California.
Bull. Seismol. Soc. Am.,
34, 184-188
Mignan A., Broccardo M., Wiemer S., Giardini D. (2017), Induced seismicity closed-form
traffic light system for actuarial decision-making during deep fluid injections. Sci. Rep., 7, 13607,
doi: 10.1038/s41598-017-13585-9
amignan/rseismTLS documentation built on July 4, 2020, 1:04 p.m.
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Description Usage Arguments Details Value References
Description
Estimates the underground feedback activation afb, which is the a-value of the Gutenberg-Richter law (Gutenberg and Richter, 1944) normalized by the injected volume (e.g., Dinske and Shapiro, 2013).
Usage
1 | a_fb.val(Ntot, b, m0, Vtot)
|
Arguments
Ntot |
total number of events above |
b |
the slope of the Gutenberg-Richter law |
m0 |
minimum magnitude threshold |
Vtot |
total volume of fluids injected |
Details
This is equivalent to Shapiro's Seismogenic Index (e.g., Dinske and Shapiro, 2013) SI = log10(Ntot / Vtot) + b * m0 but here theoretically agnostic, following the notation of Mignan et al. (2017).
Value
The numeric value of the underground feedback activation
References
Dinske C., Shapiro S.A. (2013), Seismotectonic state of reservoirs inferred from magnitude distributions of fluid-induced seismicity. J. Seismol., 17, 13-25 doi: 10.1007/s10950-012-9292-9
Gutenberg B., Richter C.F. (1944), Frequency of earthquakes in California. Bull. Seismol. Soc. Am., 34, 184-188
Mignan A., Broccardo M., Wiemer S., Giardini D. (2017), Induced seismicity closed-form traffic light system for actuarial decision-making during deep fluid injections. Sci. Rep., 7, 13607, doi: 10.1038/s41598-017-13585-9
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