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Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/6948
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| Title: | Seismicity of Azores and Geodynamic implications |
| Authors: | Borges, J.F.
Bezzeghoud, M.
Caldeira, B. |
| Editors: | Silva, A.M.
Araújo, A.A.
Reis, A.H.
Morais, M.
Bezzeghoud, M. |
| Keywords: | Seismicity
Azores
Seismotectonics
Geodynamic
Focal Mechanisms
Seismic strain rates
Seismic moment tensor |
| Issue Date: | 23-Nov-2012 |
| Publisher: | Universidade de Évora |
| Citation: | Borges J. F., M. Bezzeghoud, B. Caldeira, 2012. Seismicity of Azores and Geodynamic implications. In “Two decades of earth science research”, A. M. Silva, A. A. Araújo, A. H. Reis, M. Morais, M. Bezzeghoud (eds), Universidade de Évora, Nov. 2012, iISBN: 78-989-95091-4-6, p. 79-92. |
| Abstract: | Over the past thirty years, several seismological studies have been carried out in the Azores region in
order to characterize the geodynamic complexity of this region. In this work, we summarize these
studies and highlight their main conclusions. The analysis of the focal mechanisms of large
earthquakes reveals that there are two zones in the Azores, namely, zones I and II, with different
stress pattern and strain rates. In zone I, which is located between 30º W and 27º W, faulting motion
corresponds to a left-lateral strike slip with horizontal E-W compression and N-S extension and a
strain rate of 6.7 mm/yr. In zone II, which is located between 27º W and 23º W, the seismic moment
tensor indicates normal faulting with horizontal NE-SW extension and a strain rate of 3.1 mm/yr.. |
| URI: | http://hdl.handle.net/10174/6948 |
| ISBN: | 78-989-95091-4-6 |
| Type: | bookPart |
| Appears in Collections: | FIS - Publicações - Capítulos de Livros
CGE - Publicações - Capítulos de Livros
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