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Abstract

Summary

Induced seismicity in the Groningen field, located in the north-east of the Netherlands, has been related to gas production. Although most of the earthquakes have relatively small magnitudes, the seismic energy released by the larger magnitude has been linked to building damage. Estimating accurate earthquake locations and source mechanisms are key ingredients to assess the hazards and risks associated with induced seismicity. In 2015, a new shallow borehole network was installed, which has the potential to significantly improve the detectability, location accuracy and source mechanism analysis. However, the complexity of the Groningen earth model requires advanced methods to fully capture the complexity of the wave propagation. We have therefore applied a full waveform event location and moment tensor inversion method to data recorded by the new shallow borehole network, resulting in accurate event locations and estimated source mechanisms for over 100 events. Clusters of co-located events can be verified using a cluster analysis workflow, which utilizes cross-correlation to determine the waveform and moveout similarity between events.

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/content/papers/10.3997/2214-4609.201801057
2018-06-11
2024-04-26

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201801057
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Full Waveform Event Location and Cluster Analysis for Groningen Induced Seismicity
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201801057
/content/papers/10.3997/2214-4609.201801057
/content/papers/10.3997/2214-4609.201801057
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