Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Gravity Recovery and Climate Experiment (GRACE)"”.
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Investigation of the effect of repeat orbits on GRACE gravity recovery
The Gravity Recovery and Climate Experiment (GRACE) has been orbiting the Earth and determining its gravity field since 2002. Throughout the course of the mission, the orbital elements occasionally change such that the satellites enter a repeat ground track configuration. Repeat ground tracks …
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Remote Sensing of 21st Century Water Stress for Hazard Monitoring in California
… multi-year droughts from 2007-2010, 2012-2015, and 2020-2022. A portion of the water lost during these two decades is due to intense groundwater overdraft of the Central Valley Aquifer. This groundwater overdraft has led to poroelastic compaction of the aquifer system and subsidence of the land …
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Determining the ability of terrestrial time-lapse microgravity surveying on a glacier to find summer mass balance using gravitational modeling
… been monitored by; (1) glaciological and hydrological methods, and (2) satellite gravimetric methods using data from NASA’s Gravity Recovery and Climate Experiment (GRACE) satellite mission. However, the former can be logistically costly and have large extrapolation errors: …
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The New Concept of GRACE Gradiometry and the Unravelling of the Mystery of Stripes
For nearly two decades, the Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) missions have been widely used to quantify mass transfers within the Earth. We perform analysis on the on-board measurements, and we find an interesting correlation between space weather …
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Observações geodésicas multi-sensores aplicadas para caracterização de secas e monitoramento de massa hidrológica
… Cada capítulo é no formato de artigo abordando a utilização de sensores geodésicos aplicados no monitoramento de extremos climáticos como a seca e a perca de massa hidrológica. Tendo como área de estudo a Região Hidrográfica do Atlântico Nordeste Oriental (NEAHR) no Brasil, localizada no …
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Remote Sensing Big Data and Physical Models for Resilience to Geohazards in the Water-Energy Nexus
The interaction of natural and anthropogenic factors rapidly transforms Earth's geophysical systems, posing significant risks to critical infrastructure, ecosystems, and communities. My dissertation tackles two central challenges in geosciences: the climate-driven alterations in geosystems within …
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Highly Physical Solar Radiation Pressure Modeling During Penumbra Transitions
… radiation flux; on spacecraft shape, attitude, and mass; and on the optical properties of the spacecraft surfaces. Precise modeling of SRP is needed for dynamic satellite orbit determination, space mission design and control, and processing of data from space-based science instruments. During …
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Exploring the effects of uncertainty in hydrologic modeling and reconciling spatiotemporal data gaps at the continental scale
… modeling, reanalysis, or remote sensing methods, and commonly applied as a supplement to, or a substitute for, in-situ measurements when observational data are sparse or unavailable. Increased access over the past decade to distributed cloud systems and high-performance clusters have greatly …
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Exploring the effects of uncertainty in hydrologic modeling and reconciling spatiotemporal data gaps at the continental scale
… modeling, reanalysis, or remote sensing methods, and commonly applied as a supplement to, or a substitute for, in-situ measurements when observational data are sparse or unavailable. Increased access over the past decade to distributed cloud systems and high-performance clusters have greatly …