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Lipidomic and Genomic Investigation of Mahoney Lake, B.C.
(2014-02-25)
Photic-zone euxinia (PZE) is associated with several times in Earth's history including Phanerozoic extinction events and long parts of the Proterozoic. One of the best modern analogues for extreme PZE is Mahoney Lake in ...
Quantifying Methane Emissions Using Satellite Observations
(2014-02-25)
Methane is the second most influential anthropogenic greenhouse gas. There are large uncertainties in the magnitudes and trends of methane emissions from different source types and source regions. Satellite observations ...
On Sea Level - Ice Sheet Interactions
(2014-02-25)
This thesis focuses on the physics of static sea-level changes following variations in the distribution of grounded ice and the influence of these changes on the stability and dynamics of marine ice sheets. Gravitational, ...
Toward an improved understanding of the global biogeochemical cycle of mercury
(2014-06-06)
Mercury (Hg) is a potent neurotoxin, has both natural and anthropogenic sources to the environment, and is globally dispersed. Humans have been using Hg since antiquity and continue its use in large quantities, mobilizing ...
On the mechanisms of sulfur isotope fractionation during microbial sulfate reduction
(2014-06-06)
Underlying all applications of sulfur isotope analyses is our understanding of isotope systematics. This dissertation tests some fundamental assumptions and assertions, drawn from equilibrium theory and a diverse body of ...
Volatiles in the Earth and Moon: Constraints on planetary formation and evolution
(2014-06-06)
The volatile inventories of the Earth and Moon reflect unique histories of volatile acquisition and loss in the early Solar System. The terrestrial volatile inventory was established after the giant impact phase of accretion, ...
Estimates of Land Ice Changes from Sea Level and Gravity Observations
(2014-06-06)
Understanding how global ice volume on the Earth has changed is of significant importance to improving our understanding of the climate system. Fortunately, the geographically unique perturbations in sea level that result ...
Stability of Planetary Rotation
(2014-06-06)
This thesis focuses on the long-term rotational stability of the Earth and terrestrial planets. One important class of perturbation is a reorientation of the solid planet with respect to a rotation pole that remains fixed ...
Amazon Forest Response to Changes in Rainfall Regime: Results from an Individual-Based Dynamic Vegetation Model
(2014-02-25)
The Amazon is the largest tropical rainforest in the world, and thus plays a major role on global water, energy, and carbon cycles. However, it is still unknown how the Amazon forest will respond to the ongoing changes ...
Atmospheric Superrotation in Warm Earth Climates
(2014-02-25)
This thesis considers atmospheric superrotation, a state of westerly equatorial winds which must be maintained by up-gradient eddy momentum fluxes. Superrotation has appeared in simulations of warm climates that generate ...