Simulations for the development of a ground motion model for induced seismicity in the Groningen gas field, the Netherlands
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Published version
OA Location
Author(s)
Type
Journal Article
Abstract
We present simulations performed for the development of a ground motion model for induced earthquakes in the Groningen gas field. The largest recorded event, with M3.5, occurred in 2012 and, more recently, a M3.4 event in 2018 led to recorded ground accelerations exceeding 0.1 g. As part of an extensive hazard and risk study, it has been necessary to predict ground motions for scenario earthquakes up to M7. In order to achieve this, while accounting for the unique local geology, a range of simulations have been performed using both stochastic and full-waveform finite-difference simulations. Due to frequency limitations and lack of empirical calibration of the latter approach, input simulations for the ground motion model used in the hazard and risk analyses have been performed with a finite-fault stochastic method. However, in parallel, extensive studies using the finite-difference simulations have guided inputs and modelling considerations for these simulations. Three approaches are used: (1) the finite-fault stochastic method, (2) elastic point- and (3) finite-source 3D finite-difference simulations. We present a summary of the methods and their synthesis, including both amplitudes and durations within the context of the hazard and risk model. A unique form of wave-propagation with strong lateral focusing and defocusing is evident in both peak amplitudes and durations. The results clearly demonstrate the need for a locally derived ground motion model and the potential for reduction in aleatory variability in moving toward a path-specific fully non-ergodic model.
Date Issued
2019-08
Date Acceptance
2018-09-17
Citation
Bulletin of Earthquake Engineering, 2019, 17 (8), pp.4441-4456
ISSN
1570-761X
Publisher
Springer Verlag
Start Page
4441
End Page
4456
Journal / Book Title
Bulletin of Earthquake Engineering
Volume
17
Issue
8
Copyright Statement
© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Subjects
Science & Technology
Technology
Physical Sciences
Engineering, Geological
Geosciences, Multidisciplinary
Engineering
Geology
Earthquake ground motion
Duration
Stochastic simulation
Finite-difference simulation
Seismic hazard
PROBABILISTIC HAZARD ASSESSMENT
AVERAGE HORIZONTAL COMPONENT
POINT-SOURCE
DAMPED PSA
PREDICTION
PGV
EARTHQUAKES
EQUATIONS
FRAMEWORK
Strategic, Defence & Security Studies
0403 Geology
0905 Civil Engineering
Publication Status
Published
Date Publish Online
2018-09-25