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dutta5@illinois.edu +
Dutta +
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09:51:59, 7 January 2018 +
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Deltas of big rivers are one of the most i … Deltas of big rivers are one of the most important fluvial landforms on earth. They were the cradle for ancient civilizations and are the rice basket of the world. Some of these large fertile deltas support extremely high population density and are in parts of the world with rapidly developing economies (e.g., the Ganges-Bramhaputra-Meghna Delta (GBMD)), which makes them more vulnerable to natural hazards. The most robust way to evaluate different factors that affect the dynamics of a delta is a realistic high-resolution physically-based numerical model, based upon an increased understanding of the processes at work. Currently the state of art is not at a point where morphological evolution of a delta and its complex physical-processes can be modeled in detail across morphological time-scales. Thus, my long-term research goal is to create a high-resolution modeling framework for deltas, that considers different processes like subsidence, ground-water flow, vegetation growth etc. One of the processes I am interested in for the model of the GBMD system is tectonic processes, which is underlined by the presence of the locked megathrust fault beneath the Indo-Burman mountain ranges, and the catastrophic large earthquake it may cause. Such a huge earthquake has the potential to avulse the rivers forming the GBMD, thus it is imperative for future hazard mitigation to understand how GBMD will react to river avulsions and resulting change in sediment-flux. In the past, analysis has been done to evaluate the effect of 1950 Assam earthquake on the morphological response of the river system, but the analysis was limited to change in sediment load in the system. </br>My background is in developing high-fidelity CFD models for complex environmental flows, and numerical models for predicting morphological evolution of fluvial-systems. Through this workshop, I hope to learn about the state of the art models for tectonic evolution, which will help me to include them in the models I develop in the future. This workshop will also introduce me to the community of scientists creating models for the evolution of the earth surface.ls for the evolution of the earth surface.
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09:51:59, 7 January 2018 +
