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Effect of regional tectonic setting on local fault response to episodes of volcanic activity

Roman, Diana C.; Heron, Philip

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Authors

Diana C. Roman

Philip Heron



Abstract

[1] In this study we examine the interaction of tectonic and volcanically‐generated stress fields, and their combined effect on patterns of volcanotectonic (VT) seismicity, by calculating Coulomb stress changes on local faults induced by a constant dike inflation event in a background stress field of systematically varying magnitude and orientation. We find that patterns of VT seismicity (earthquake locations and fault‐plane solutions) resulting from dike inflation depend strongly on the relative strength and orientation of background tectonic stresses. Patterns of VT seismicity similar to those predicted by our Coulomb stress models have been observed at several recently active volcanoes, and appear to correspond to the relative strength of the regional stress field. Thus, it is critical to consider the regional tectonic setting when interpreting patterns of VT seismicity in terms of magmatic processes.

Citation

Roman, D. C., & Heron, P. (2007). Effect of regional tectonic setting on local fault response to episodes of volcanic activity. Geophysical Research Letters, 34(13), Article L13310. https://doi.org/10.1029/2007gl030222

Journal Article Type Article
Acceptance Date Jun 7, 2007
Online Publication Date Jul 14, 2007
Publication Date Jul 14, 2007
Deposit Date May 29, 2018
Publicly Available Date May 29, 2018
Journal Geophysical Research Letters
Print ISSN 0094-8276
Electronic ISSN 1944-8007
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 34
Issue 13
Article Number L13310
DOI https://doi.org/10.1029/2007gl030222
Public URL https://durham-repository.worktribe.com/output/1330083

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Copyright Statement
Roman, Diana C. & Heron, Philip (2007). Effect of regional tectonic setting on local fault response to episodes of volcanic activity. Geophysical Research Letters 34(13): L13310., 10.1029/2007GL030222. To view the published open abstract, go to https://doi.org/ and enter the DOI.





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