archives@tulane.edu / The crustal state-of-stress is influenced by crustal heterogeneity and anisotropy, regional tectonics, gravitational loading of topographic relief, and subsurface magma pressure. The local stress field dictates the location and orientation of magmatic intrusions and faulting, which are important to understand tectonic processes and to inform hazard studies. I analyze earthquakes and their corresponding source mechanisms, complemented by analytical and numerical stress modeling, to interpret state-of-stress in rifting and magmatic regions. I investigate how brittle deformation is accommodated in early-stage rifting of cratonic lithosphere via seismic moment tensors in regions that are considered magma-rich and magma-poor. I also study the caldera stress change associated with an eruption. My research can contribute to our understanding of the controlling mechanisms in an extensional regime and in volcanic regions, and contribute to earthquake and volcanic hazard assessment in magmatic and rift zones in Africa, and worldwide. / 1 / Sarah Jaye Oliva
| Identifer | oai:union.ndltd.org:TULANE/oai:http://digitallibrary.tulane.edu/:tulane_120524 |
| Date | January 2020 |
| Contributors | Oliva, Sarah Jaye (author), Ebinger, Cynthia (Thesis advisor), School of Science & Engineering Earth and Environmental Sciences (Degree granting institution) |
| Publisher | Tulane University |
| Source Sets | Tulane University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | electronic, pages: 224 |
| Rights | 6 months, Copyright is in accordance with U.S. Copyright law. |
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