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Louisiana State University +
Baton Rouge +
ppersaud@lsu.edu +
Patricia +
Persaud +
225-578-4486 +
Louisiana +
United States +
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14:04:37, 5 January 2018 +
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My interests are in improving our knowledg … My interests are in improving our knowledge of active plate boundaries and our understanding how active structures in these settings connect, interact and co-evolve, with a particular focus on geohazards, heat flow potential and the link between plate boundary architecture and surface processes. My main study areas are southern California (Santa Barbara Channel, Los Angeles Basin and Cajon Pass and the Salton Trough - N. Gulf of California), the Indo-Burma Arc and Lipari Island, Italy. Using seismic imaging techniques and the analysis of borehole breakouts, I am able to provide constraints on crustal structure and in situ stress and also monitor the influence of fluids on natural seismicity. Some of my main results include stress variations at the sub-kilometer scale in the Los Angeles basin near active faults, which interestingly show an increased variation at shallower depths. I have also shown with numerical models using FLAC style codes that basal shear and rift obliquity control the number of basins and distributed faulting in transtensional settings. However, increasing evidence suggests that surface loads, e.g., changes in sediment distribution and sedimentation rate; groundwater recharge or depletion and subsidence related to seasonal groundwater changes or CO2 storage are in some cases controlled by active faults and basement structure. Conversely, what role do surface processes play in reactivating faults or transferring slip between fault segments through stress perturbations? What are the best methods for modeling and integrating surface processes with long term tectonic models that reflect ~10,000 year time scales and the smallest spatial scales of hundreds of meters. And how do these processes change the architecture and interactions within active fault networks?interactions within active fault networks? +
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14:04:37, 5 January 2018 +
