Global warming arises from an energy imbalance where increased radiative forcing from greenhouse gases traps additional heat in the Earth system. Over recent decades, more than 90% of this heat has gone into the ocean, causing thermal expansion that leads to sea level rise. Addi…
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Seismology is a geophysical tool that can probe the earth and provide insight into processes that are otherwise difficult to observe. I am primarily interested in using seismological methods to detect and study ubiquitous processes that are challenging to observe due to noise so…
Kelvin waves are internal ocean waves that balance the Earth's Coriolis force against a wave boundary such as a coastline or the equator. In the Indian Ocean, Kelvin waves originate from Wyrtki jets off the east African coast and propagate along the equatorial wave guide until r…
The intraseasonal variability (ISV; 20-90 days) in Makassar Strait, the primary pathway for Pacific water flow into the Indian Ocean and a waveguide for transmitting subinertial energy from the tropical Indian Ocean to Indonesian seas, is investigated, using the 2004-2006 Intern…
The importance of Indian Ocean circulation dynamics to the regional and global weather signatures is increasingly recognized at large partly due to improved ocean observations in the last few decades. Observational and modeling efforts are directed towards understanding the impa…
The Indo-Pacific Warm Pool is currently the warmest region of the modern ocean, with annual average sea surface temperatures upwards of 28°C. As such, it is the largest single source of heat and moisture to the atmosphere. Climate modeling efforts and paleoceanographic reconstru…
The local and remote sources of variability of the South Atlantic Ocean are investigated using a set of numerical experiments and satellite data. A global, eddy-permitting, numerical simulation is analyzed to investigate the dynamical links between the Antarctic Circumpolar Curr…
The ocean-atmosphere coupling can play a role in initiating and sustaining the Madden-Julian Oscillations (MJOs), which are the major intraseasonal oscillations in the atmosphere. In this thesis, the oceanic influence on MJOs is studied with reanalysis products, numerical models…
Two 3D seismic reflection datasets from the West African and Brazilian continental margins were analysed to determine their architectural elements and to further the understanding of the sedimentary processes that control their morphology. The results suggest a strong influence …
The Cyrenaica Basin is located in the northeast part of Libya, along the North African coast. It comprises two distinct tectonic provinces sandwiched by the Cyrenaican Fault System. The area has been influenced by Tethyan tectonics since its opening during the Jurassic. The high…
This work makes use of newly available, high-resolution, quantitative sea surface temperature (SST) records to make the first detailed inter-comparison of the temperature histories of different areas of the tropical ocean over the course of Plio-Pleistocene climate evolution. Th…
The progress of modern hydrocarbon exploration into increasingly deepwater settings has led to a renewed interest in deepwater fold and thrust belts. Deepwater fold and thrust belts often form as a result thin-skinned compression above a ductile substrate, such as overpressured …
A detailed investigation of the structural evolution of the deepwater west Niger Delta was undertaken from the combination of industry 2D and 3D seismic reflection datasets. The study has been focused on three themes: crustal architecture, thrusting in oceanic crust and the role…
Long-term variability in the strength and frequency of the El Niño - Southern Oscillation (ENSO) may be attributable to changes in background climatology. During times of cold climate events in the high latitudes, El Niño conditions may have been more persistent in the equatoria…
Storm surge occurs in low-lying coastal areas when strong winds blow the sea surface up onto the land. The resulting inundation can pose a great danger to lives and property. This study uses an Ocean General Circulation Model and the results from a mesoscale atmospheric model to…
This thesis advances knowledge and understanding of the sedimentology of deep-water continental slopes by providing a comprehensive, multi-scale analysis of the evolution of slope deposits through time. Continental slopes are complex environments, which are inherently deposition…
This research aims to interpret and analyze a large (640 km2 ), industry-quality, 3D multichannel seismic reflection dataset (@ 3 s) and well-logs from the petroliferous South Caspian basin, offshore Azerbaijan, in order to clarify the origin, age, and areal extent of a large-sc…