Browsing Faculty of Arts and Sciences by FAS Department "Earth and Planetary Sciences"
Now showing items 1-20 of 572
-
The 1-by-3 Tandem Differential Mobility Analyzer for Measurement of the Irreversibility of the Hygroscopic Growth Factor
(Taylor & Francis Ltd, 2009)A new instrument, namely the 1 × 3 tandem differential mobility analyzer (1 × 3-TDMA), has been developed. Its primary measurement is the irreversibility of the hygroscopic growth factor of aerosol particles. The instrument ... -
3D modelling of the climatic impact of outflow channel formation events on early Mars
(Elsevier BV, 2017)Mars was characterized by cataclysmic groundwater-sourced surface flooding that formed large outflow channels and that may have altered the climate for extensive periods during the Hesperian era. In particular, it has been ... -
A Portrait of Terrestrial Volatile Evolution From Mantle Noble Gases
(2016-10-31)Volatile elements and compounds provide important insights into large-scale planetary and tectonic processes. The chapters in this thesis exploit the wealth of information provided by noble gas measurements to address a ... -
Abrupt Climate Shifts in Greenland Due to Displacements of the Sea Ice Edge
(American Geophysical Union, 2005)An atmospheric circulation model is used to show that a reduction in sea ice extent in the North Atlantic produces a climatic response consistent with abrupt changes in temperature and snow accumulation recorded in Greenland ... -
Absence of Extraterrestrial 3He in Permian–Triassic Age Sedimentary Rocks
(Elsevier Science BV, 2005)Helium concentration and isotopic composition were measured in a suite of samples across the Permian–Triassic boundary at Opal Creek, Canada, to determine whether high extraterrestrial helium concentrations are associated ... -
Active deformation over multiple earthquake cycles in the southern Junggar fold and-thrust belt, NW China and fractured reservoir characterization using 3D geomechanical restorations
(2016-05-19)This dissertation investigates natural deformation processes over multiple earthquake cycles in the seismically active, southern Junggar basin, NW China and additionally explores the capabilities of 3D geomechanical ... -
Adakitic Dacites Formed by Intracrustal Crystal Fractionation of Water-Rich Parent Magmas at Nevado de Longav Volcano (36.2 Degrees S; Andean Southern Volcanic Zone, Central Chile)
(Oxford University Press, 2007)The mid-Holocene eruptive products of Nevado de Longav volcano (362S, Chile) are the only reported occurrence of adakitic volcanic rocks in the Quaternary Andean Southern Volcanic Zone (3346S). Dacites of this volcano are ... -
Adaptation of US maize to temperature variations
(Nature Publishing Group, 2013)High temperatures are associated with reduced crop yields1, 2, and predictions for future warming3 have raised concerns regarding future productivity and food security4, 5, 6, 7, 8. However, the extent to which adaptation ... -
Agglutinated tests in post-Sturtian cap carbonates of Namibia and Mongolia
(Elsevier BV, 2011)Paleomagnetic data suggest that the early Cryogenian (Sturtian) glaciation extended to sea level at low latitude. The impact of this dramatic environmental change on biota, and the composition of ecosystems in the immediate ... -
Air-Sea Exchange in the Global Mercury Cycle
(American Geophysical Union, 2007)We present results from a new global atmospheric mercury model coupled with a mixed layer slab ocean. The ocean model describes the interactions of the mixed layer with the atmosphere and deep ocean, as well as conversion ... -
ALD of Tin Monosulfide, SnS
(AVS, 2011) -
Algorithms for the Calculation of Exact Displacements, Strains, and Stresses for Triangular Dislocation Elements in a Uniform Elastic Half Space
(Elsevier, 2007)We present algorithms for analytically calculating the displacements, strains, and stresses associated with slip on a triangular dislocation element (TDE) in a homogeneous elastic half space. Following previous efforts, ... -
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 ... -
American Maize: Climate Change, Adaptation, and Spatio-Temporal Variation in Temperature Sensitivity
(2015-04-20)Agricultural production is vulnerable to climate change. However, this vulnerability can be reduced by adapting food crops to a hotter climate. Many studies have ignored adaptation when quantifying the effect of climate ... -
Anaerobic Methane Oxidation in Metalliferous Hydrothermal Sediments: Influence on Carbon Flux and Decoupling from Sulfate Reduction
(Wiley-Blackwell, 2012)The anaerobic oxidation of methane (AOM) is a globally significant sink that regulates methane flux from sediments into the oceans and atmosphere. Here we examine mesophilic to thermophilic AOM in hydrothermal sediments ... -
Analysis of Atmospheric Energy Transport in ERA40 and Implications for Simple Models of the Mean Tropical Circulation
(American Meterological Society, 2008)An analysis of atmospheric energy transport in 22 years (1980-2001) of the 40-yr ECMWF Re-Analysis (ERA-40) is presented. In the analyzed budgets, there is a large cancellation between divergences of dry static and latent ... -
Ancient Aqueous Environments at Endeavour Crater, Mars
(American Association for the Advancement of Science (AAAS), 2014)Opportunity has investigated in detail rocks on the rim of the Noachian age Endeavour crater, where orbital spectral reflectance signatures indicate the presence of Fe+3-rich smectites. The signatures are associated with ... -
Andean Growth and the Deceleration of South American Subduction: Time Evolution of a Coupled Orogen-subduction System
(Elsevier, 2008)Present-day orography at the Andean margin is a result of isostasy, tectonic accretion, and erosional processes. The resulting excess mass of the Andes gives rise to frictional stresses on the seismogenic plate interface ... -
Animals in a Bacterial World, A New Imperative for the Life Sciences
(Proceedings of the National Academy of Sciences, 2013)In the last two decades, the widespread application of genetic and genomic approaches has revealed a bacterial world astonishing in its ubiquity and diversity. This review examines how a growing knowledge of the vast range ... -
Antarctic Temperature at Orbital Timescales Controlled by Local Summer Duration
(Nature Publishing Group, 2008)During the late Pleistocene epoch, proxies for Southern Hemisphere climate from the Antarctic ice cores vary nearly in phase with Northern Hemisphere insolation intensity at the precession and obliquity timescales. This ...