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Oxygen isotope systematics of nitrification
(Massachusetts Institute of Technology, 2007)
During nitrification there is an exchange of oxygen atoms between water and nitrite, causing the [delta]¹⁸O of nitrate produced by nitrification to be closer to the [delta]¹⁸O of water than expected. A series of lab and ...
The Green's function for the diffusion coefficient
(Massachusetts Institute of Technology, 2012)
The scattering diffusion coefficient between two points can theoretically be extracted from a random distribution of sources. An improved ability to measure the diffusion coefficient of the Earth's crust would simplify the ...
Lower Charles River bathymetry : 108 years of fresh water
(Massachusetts Institute of Technology, 2017)
The Lower Charles River has been a heavily utilized urban river that runs between Cambridge and Boston in Massachusetts. The recreational usage of the river is dependent on adequate water depths and there have been no ...
A comparison of kinematic and dynamic schemes for calculating long-range atmospheric trajectories
(Massachusetts Institute of Technology, 2017)
Two numerical models, one kinematic and one dynamic, were created and compared in their ability to predict trajectories of atmospheric parcels over eight days. While kinematic models are more widely used due to their ...
Effects of space weathering on the Trojan asteroids
(Massachusetts Institute of Technology, 2002)
Trojan asteroids orbit at Jupiter's L4 and L5 points. They are included in the D-class of asteroids because of their steep spectral slope. According to spectra of other asteroid classes, the larger the diameter is of a ...
Determining the concentration and source of lead in chocolate using lead isotopes
(Massachusetts Institute of Technology, 2007)
Single-origin dark chocolate samples derived from cocoa grown in developing countries from around the world were analyzed to determine their lead concentrations and the isotopic composition of the lead. The lead isotope ...
The formation history of Olympus Mons from paleo-topography
(Massachusetts Institute of Technology, 2011)
The formation of the volcano Olympus Mons, is linked directly to the geodynamic history of both Tharsis, and Mars as a whole. We sought to constrain the bulk formation period using paleo-topographic evidence. On the ...
Molecular toxicity of lead
(Massachusetts Institute of Technology, 2008)
High precision U/Pb geochronology on the Cenomanian Dakota Formation, Utah : implications for paleobotany and the transgression of the Western Interior Seaway preceding Oceanic Anoxic Event 2
(Massachusetts Institute of Technology, 2010)
The Dakota Formation was deposited during the Cenomanian, a time when the Western Interior Seaway spanned much of North America. The Dakota Formation contains a rich record of plant and animal fossils. Key to understanding ...
Analysis of Pluto's light curve to detect volatile transport
(Massachusetts Institute of Technology, 2016)
Changes in the volatile distribution on Pluto's surface and in its atmosphere are expected to occur over its orbital path due to varying surface insolation[14]. To investigate these changes, a model was created to synthesize ...