This dissertation explores the recent history of non-polar ice-rich paleodeposits on Mars, primarily through the analysis of pedestal craters. Pedestal craters are defined by having …
Recent development of biomarker-based paleoclimate proxies provides new analytical capabilities through which paleoenvironmental change can be inferred. Here, I explore the utility of these organic …
The Great Barrier Reef, the world’s largest coral reef ecosystem, is subjected to a number of global and local stressors, including tropical cyclones. Although tropical …
This thesis is a mathematical study of paleoclimatology and computational biology.<br/><br/> <br/><br/> Part I gives an introduction and overview of this dissertation.<br/><br/> <br/><br/> Part II presents the …
Studies in paleoclimatology should be accompanied by uncertainty analyses, as uncertainty is found within the very first measurements of the proxies imprinted in geological records. …
In the coming decades to centuries drastic changes in temperature and precipitation patterns pose new challenges for societies and ecosystems in the North Atlantic region. …
In the coming decades to centuries drastic changes in temperature and precipitation patterns pose new challenges for societies and ecosystems in the North Atlantic region. …
The history of Mars’ paleoclimate is explored using sedimentary records from both the Noachian and Amazonian periods. Sedimentary structures indicative of a progradational delta are …
Alkenones are lipids produced by certain haptophyte algae and are excellent sensors of temperature change. This dissertation investigates the stable isotopic and organic geochemical aspects …
Alkenones are lipids produced by certain haptophyte algae and are excellent sensors of temperature change. This dissertation investigates the stable isotopic and organic geochemical aspects …
Today, more than any preceding time, understanding the response of terrestrial ecosystems to changes in climate is imperative due to the extremes to which we, …
This thesis investigates the diversity and ecology of alkenone-producing haptophyte algae. Focusing on lake-dwelling haptophytes, this thesis describes the paleoclimate implications of haptophyte diversity. Additionally, …
Recent climate extremes, including floods, droughts, and hurricanes, have had devastating effects worldwide, driving new research aimed at developing better prediction of such events. Understanding …
The availability of nutrients in surface waters, including inorganic nitrogen (N) (i.e., nitrate (NO3-), nitrite (NO2-), and ammonium (NH4+)), regulates estuarine and ocean primary production. …
The Indian Summer Monsoon (ISM) is vital to over one-fifths of the world’s population who depend upon monsoonal rains. Recently collected marine sediment cores offer …
Leaf wax D/H ratios are widely used to reconstruct environmental water D/H ratios in paleoclimatology. However, accurate quantitative assessment of precipitation D/H ratios from sedimentary …
Over the coming century, global temperatures are expected to rise by 1.8°-4°C due to anthropogenic emission of greenhouse gasses. This increased radiative forcing and associated …
The nitrogen and oxygen isotopic composition of nitrate in ice cores offers unique potential for examining reactive nitrogen oxide (NOx) budgets and oxidation chemistry of …
The question of how to interpret precipitation isotope records in East Asia is an ongoing debate and has implications for understanding climate dynamics in East …