Dynamic modeling of injection-induced fault reactivation and ground motion and impact on surface structures and human perception
Open access
Date
2014Type
- Conference Paper
ETH Bibliography
no
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Abstract
We summarize recent modeling studies of injection-induced fault reactivation, seismicity, and its potential impact on surface structures and nuisance to the local human population. We used coupled multiphase fluid flow and geomechanical numerical modeling, dynamic wave propagation modeling, seismology theories, and empirical vibration criteria from mining and construction industries. We first simulated injection-induced fault reactivation, including dynamic fault slip, seismic source, wave propagation, and ground vibrations. From co-seismic average shear displacement and rupture area, we determined the moment magnitude to about Mw = 3 for an injection-induced fault reactivation at a depth of about 1000 m. We then analyzed the ground vibration results in terms of peak ground acceleration (PGA), peak ground velocity (PGV), and frequency content, with comparison to the U.S. Bureau of Mines’ vibration criteria for cosmetic damage to buildings, as well as human-perception vibration limits. For the considered synthetic Mw = 3 event, our analysis showed that the short duration, high frequency ground motion may not cause any significant damage to surface structures, and would not cause, in this particular case, upward CO2 leakage, but would certainly be felt by the local population. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000119347Publication status
publishedExternal links
Book title
12th International Conference on Greenhouse Gas Control Technologies, GHGT-12Journal / series
Energy ProcediaVolume
Pages / Article No.
Publisher
ElsevierEvent
Subject
Induced seismicity; Modeling; Carbon sequestration; Fault reactivation; Ground vibration; Building damage; Human perceptionOrganisational unit
02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)
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ETH Bibliography
no
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