School of Earth and Atmospheric Sciences Theses and Dissertations: Recent submissions
Now showing items 1-20 of 543
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Advanced methods for real-time identification and determination of seismic events
(Georgia Institute of Technology, 2022-12-20)Natural disasters pose an indistinguishable threat to populations all around the world, affecting ~200 hundred million every year, with earthquakes being the most deadly. Global seismic monitoring allows for robust real-time ... -
The impacts of climate variability and change on the physical and social-ecological dynamics of the Kuroshio and North Pacific Transition Zone
(Georgia Institute of Technology, 2022-12-08)There is growing recognition that climate change is impacting the ocean's western boundary current system. In the Pacific, the Kuroshio and its offshore Kuroshio-Oyashio Extension (KOE) play a central role in the North ... -
Speciation and Recovery of Rare Earth Elements (REEs) from Coal Fly Ash
(Georgia Institute of Technology, 2022-05-05)Recovery of rare earth elements (REEs) from coal fly ash (CFA) is a promising resource recovery and waste recycling option that might bring about significant economic and environmental benefits. However, many challenges ... -
Central Equatorial Pacific Sea Surface Temperatures Over the Last Glacial Cycle
(Georgia Institute of Technology, 2021-12-14)The tropical Pacific is a dominant influence on global climate, from interannual to glacial-interglacial timescales. How this system will respond to anthropogenic greenhouse gas forcing, however, remains an area of large ... -
Understanding the Sources, Atmospheric Evolution and Radiative Effect of Brown Carbon Aerosol Particles
(Georgia Institute of Technology, 2021-12-15)Organic aerosols (OA) have long been thought to only scatter incoming solar radiation and have a cooling effect on climate. However, a fraction of OA, referred to as brown carbon (BrC), absorbs light in the lower visible ... -
Subsurface Sediment Mobilization on Mars: Insights Provided by Orbital Remote Sensing Datasets
(Georgia Institute of Technology, 2021-08-24)Mud volcanism, a specific type of subsurface sediment mobilization process known to occur on Earth, has been suggested to explain the formation of morphologically diverse edifices across the surface of Mars. Previous studies ... -
Improved Understanding of Intraplate Earthquakes in the Southeastern USA with Matched Filter Detection
(Georgia Institute of Technology, 2022-07-30)Most earthquakes occur along plate boundaries (also known as interplate earthquakes) and are caused by repeated accumulation and release of strain in tectonic plates moving past one another. However, the same driving forces ... -
Understanding microseismicity behavior and their response to earth processes by improving earthquake catalogs
(Georgia Institute of Technology, 2022-08-01)Natural earthquakes occur on faults ranging from 0 to 700 km beneath Earth's surface in different tectonic settings, such as along major subduction zones in Japan and the arc-continent collisional environment in Taiwan. ... -
Constrain Paleo pO2 Using One Dimensional Reactive Transport Chromium/Iron Weathering Model
(Georgia Institute of Technology, 2021-08-02)Quantitatively constraining atmospheric oxygen level (pO2) in the Proterozoic has been a long time struggle in the study of paleoclimate and biogeochemistry. An accurate reconstruction would benefit our understanding towards ... -
Satellite constraints on source-specific nitrogen oxide emissions and isoprene chemistry in the southeast united states: evaluations and implications for background ozone
(Georgia Institute of Technology, 2021-07-29)Nitrogen oxides (NOx = NO + NO2) originating from combustion, lightning and soil, are the main drivers of the tropospheric ozone formation and important precursors of secondary organic aerosols, with consequences for human ... -
Modeling and Observations of High-silica Magmatic Systems on Earth and Mars
(Georgia Institute of Technology, 2021-07-27)On Earth, evolved felsic crust is commonly associated with plate tectonics, specifically subduction zones, and the role of water in modulating melting conditions and phase equilibria in the mantle and crust. As Mars lacks ... -
EVIDENCE FOR AN OLIGOCENE YARLUNG-BRAHMAPUTRA CONNECTION AND CROSS SUTURE DRAINAGE FROM DETRITAL ZIRCON U-Pb AND εHf PROVENANCE ANALYSIS, NORTHERN INDO-BURMAN RANGES
(Georgia Institute of Technology, 2022-05-03)The reorganization of continental-scale river systems is a fundamental control on the size and distribution of sedimentary basins along tectonically active plate boundaries. In the eastern Himalaya, river reorganization ... -
Observations of Englacial and Subglacial Hydrology at Sermeq Kujalleq (Store Glacier) from Autonomous Phase-Sensitive Radio Echo Sounding
(Georgia Institute of Technology, 2022-05-03)Liquid water at the basal interface of a glacier reduces effective pressure and basal friction thus increasing ice motion. The timing of surface melt reaching the bed is poorly constrained, however. To more accurately ... -
Deep biosphere microbial protein interactions with clathrates
(Georgia Institute of Technology, 2022-05-02)Gas clathrates are composed of a latticework of water molecules that trap guest gas molecules and form at high pressure and low temperatures. Methane clathrates along continental margins and in permafrost store thousands ... -
Europa's Surface and Shallow Water: Ice Shell Activity and Implications for Habitability
(Georgia Institute of Technology, 2022-05-02)Beneath the geologically complex ice shell of Europa, Jupiter’s innermost icy satellite, likely lies a vast, saline subsurface ocean that may hold conditions favorable for life. Key to that question is how processes in the ... -
Modeling Ocean Circulation and Biogeochemical Dynamics in the Drake Passage
(Georgia Institute of Technology, 2022-04-20)The Southern Ocean is a critical component of global climate and carbon cycling. Although an overall regional carbon sink, observations indicate uptake behavior fluctuates on seasonal to decadal scales, and there is much ... -
Submesoscale Impacts on Tracer Transport in the Gulf of Mexico
(Georgia Institute of Technology, 2021-04-22)Mesoscale and submesoscale dynamics and their role on the transport and mixing of ocean biogeochemical tracers have been investigated widely in recent literatures. In general, large circulations and mesoscale eddies control ... -
Mineralogical and Geochemical Controls on Polyphosphate Transformation and Mineralization in Marine Sedimentary Environments
(Georgia Institute of Technology, 2020-12-07)Phosphorus (P) is an essential and limited micronutrient regulating marine primary productivity. Despite the critical roles of marine P cycle in global biogeochemical processes, the mechanisms leading to marine P removal ... -
Projected changes in a multiscale environment: the subpolar North Atlantic Ocean
(Georgia Institute of Technology, 2020-11-19)By the end of this century, the Oceans will markedly change in response to anthropogenic stressors and increasing greenhouse gas emissions. Their circulation and the horizontal and vertical transport of heat, salt, carbon, ... -
Organic Aerosol Composition in the Southeastern United States and the Role of Low-Molecular-Weight Organic Acids
(Georgia Institute of Technology, 2020-07-28)Particulate matter (PM) is an important component of the atmosphere which affects the planetary energy budget, visibility, and public health. Although atmospheric PM is a complex mixture of inorganic and organic components ...