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Gene transfer history of carbon fixation proteins constrains marine cyanobacteria divergence times
(Massachusetts Institute of Technology, 2018)
Carboxysomes provide an avenue for narrowing the timing of evolutionary events in groups of cyanobacteria that are ecologically dominant in modem marine environments - groups that may have an integral role in oxygenating ...
Investigations of the b-value and its variations on possible earthquake prediction in the North-South China Seismic Belt
(Massachusetts Institute of Technology, 2016)
The Gutenberg-Richter b-value is studied extensively by researchers as a possible earthquake precursor. In this thesis, two different approaches to compute the b-value for the purpose of earthquake prediction are investigated ...
Poroelastic modeling of groundwater and hydrocarbon reservoirs : investigating the effects of fluid extraction on fault stability
(Massachusetts Institute of Technology, 2017)
The possibility of human-triggered earthquakes is critical to understand for hazard mitigation. This project was developed to better understand the stability of faults in areas with high amounts of fluid extraction, and ...
Seismic tomography and surface deformation in Krýsuvík, SW Iceland
(Massachusetts Institute of Technology, 2013)
The Krýsuvík region of southwestern Iceland is a region of high potential for geothermal energy that is currently experiencing seismic swarm activity and active surface deformation. Understanding the subsurface structure ...
On relative permeability : a new approach to two-phase fluid flow in porous media
(Massachusetts Institute of Technology, 2017)
Being valid for single-phase flow, Darcy's law is adapted to two-phase flow through the standard approach of relative permeability, in which permeability, rather than being a unique property of the porous medium, becomes ...
Monitoring of oil-production-induced subsidence and uplift
(Massachusetts Institute of Technology, 2020)
A number of human activities associated with the petroleum industry are known to trigger or even induce anthropogenic earthquakes of varying magnitudes. Examples of the damages of the infrastructure in oil and gas fields ...
Imaging the lowermost mantle (D ") beneath the Pacific Ocean with SKKS coda waves
(Massachusetts Institute of Technology, 2015)
We apply a generalized Radon transform (GRT) to SKKS data to obtain a large-scale high-resolution image of the lowermost mantle (400 kilometers above the core-mantle boundary) beneath the Pacific Ocean (125° E-75°W, 45° ...
Effects of lateral heterogeneity on 1D D.C. resistivity and transient electromagnetic soundings in Kuwait
(Massachusetts Institute of Technology, 2015)
Aquifer storage and recovery (ASR) of treated wastewater is a viable sustainable water management option for Kuwait. A geophysical survey to characterize the target aquifer in the Dammam Formation was conducted to obtain ...
The effects of fluid pressure changes on fractured rock elastic moduli and surface deformation
(Massachusetts Institute of Technology, 2017)
Reservoir models use the elastic moduli of rock, both bulk and shear, to compute deformation. These moduli may change with pressure and fracture density, but this effect is usually left out of models. This work shows ...