The last deglacial history of the Antarctic Ice Sheet (AIS), the world’s largest freshwater reservoir, is important for monitoring the current AIS change and projecting the future sea-level rise trend. However, due to the lack of direct observational constraints on AIS last degl…
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The topography and gravity measurements from missions to Venus and Mars are among a few data available to constrain models of the interior structure and dynamics of these planets. These measurements reveal various intriguing features whose origins have generated debates in the p…
This doctoral dissertation constitutes an integrated geophysical investigation of the lithospheric structure in the region of Libya. It is separated into three sections, each of which will be submitted to different scientific journals for publication. In the first part of the st…
Continental rifting is fundamental to the theory of plate tectonics, yet the force balance driving Earth's largest continental rift system, the East African Rift (EAR), remains debated. The EAR actively diverges the Nubian and Somalian plates spanning ∼5000 km N-S from the Red S…
Mechanisms for the formation of a foreland basin at the beginning of continental collision (Pliocene-Recent Australian continental foreland along the Banda orogen) and a post-orogenic, continental, Miocene extensional basin (Alboran Sea) are studied. Such a study investigates th…
Cratons are the ancient, typically Archean in age, stable interior of continental plates. They are thicker and more stable than the surrounding lithosphere due to their lithospheric mantle composition of depleted peridotite and limited interaction with convecting mantle. The inh…
Glacial isostatic adjustment (GIA) is the ongoing response of the viscoelastic solid Earth, oceans and the gravitational field to the previous burden of the ice loads. The Earth’s surface was once covered with massive ice sheets, and melting of these ice sheets is still reshapin…
Despite Venus showing no evidence of a global system of tectonic deformation, a variety of tectonic landforms across Venus suggests a complex and active geologic history that is not fully understood. One of the most ubiquitous tectonic landforms identified are linear to arcuate,…
The interior structures of planetary bodies beyond the Earth are broadly unknown. Our observational capacity is largely limited to surface imagery from spacecraft. The work presented in this dissertation uses novel modeling methods of melt migration and melt focusing processes t…