Hydrocarbon deposits in the form of petroleum, natural gas, and natural gas hydrates occur offshore worldwide. Electromagnetic methods that measure the electrical resistivity of sediments can be used to map, assess, and monitor these resistive targets. In particular, quantitative assessment of hydrate content in marine deposits, which form within the upper few hundred meters of seafloor, is greatly facilitated by complementing conventional seismic methods with EM data. The North-East Pacific Time-series Undersea Network Experiment (NEPTUNE) is an underwater marine observatory that provides power and network connection to a host of instruments installed on the seafloor on the Cascadia Margin offshore Vancouver Island. The observatory’s aim is to provide a platform for very long-term studies in which access to data is available on a continuous basis. For this thesis project, a transient dipole-dipole time-domain EM system was constructed and deployed on the NEPTUNE network with the goal of long-term monitoring of a well-studied hydrate deposit in the area. The instrument includes a source transmitter of electrical current and individual receivers to measure small electric field variations. The instrument is powered by the NEPTUNE observatory and data can be collected remotely by connecting to the instrument through the web. Data collected so far from the instrument are consistent with a resistive structure. The best fitting model from 1D inversion is a 36 ± 3 m thick layer of 5.3 ± 0.3 Ωm resistivity, overlaying a less resistive 0.7 ± 0.1 Ωm halfspace. Average hydrate concentration, deduced with the aid of ODP-889 well-log derived Archie’s parameters, is approximately 72% of pore space in the resistive layer, consistent with the very high concentration of gas hydrates (~80%) recovered from seafloor cores. The weekly collection of data from the instrument shows that the resistive structure has changed little since monitoring began in October of 2010.

The purpose of this thesis is to investigate how new risks associated with the organizational development of special operations forces should be best dealt with in a supplement to William McRaven's theory of relative superiority. The special operations’ forces structure is approaching the size of more conventional forces and a development of theories may be needed to address the growth challenges the organization is experiencing. The questions this thesis aims to answer are: How were the new risks present in Operation Neptune Spear and what were their consequences for the operation? How were these consequences managed? The research design contains a single case study based on text and process tracing methodology and analysis.The result of the thesis confirms that risk factors linked to organizational development can be traced in Operation Neptune Spear and therefore affects McRaven's theory. The author proposes a supplement to the theory in order to better manage these risks.

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Plus d’un millier d’exoplanètes ont été découvertes depuis une dizaine d’années. Plus incroyable encore, nous pouvons maintenant caractériser les atmosphères de ces mondes lointains. Des spectres de Jupiter-chauds tels que HD 189733b et HD 209458b et de planètes similaires à Neptune telles que GJ1214b sont déjà disponibles et ceux de planètes plus petites le seront bientôt. La plupart des observations caractérisent l’état moyen de l’atmosphère. Pour les cas les plus favorables, l’observation des courbes de phase et la technique de cartographie par éclipse secondaire permettent d’obtenir une résolution en longitude et en latitude. Les planètes les plus proches de leurs étoiles sont aussi les plus faciles à observer. Ces mondes chauds sont radicalement différents des exemples que nous avons dans le système solaire. Modéliser correctement leurs atmosphères est un défi à relever pour comprendre les observations présentes et à venir. Durant cette thèse, j’ai développé des modèles de différente complexité pour comprendre les interactions entre la structure thermique, la composition, la circulation atmosphérique et l’évolution à long terme des exoplanètes irradiées. La forte luminosité de leur étoile hôte détermine le climat de ces planètes. Elle engendre une circulation atmosphérique qui maintient l’atmosphère dans un état de déséquilibre thermique et chimique, affectant son évolution. Avec les futurs instruments de nombreuses autres planètes vont être découvertes et caractérisées. Nos modèles seront testés sur une large diversité de planètes, ouvrant les portes de la climatologie aux exoplanètes. / More than a thousand exoplanets have been discovered over the last decade. Perhaps more excitingly, probing their atmospheres has become possible. We now have spectra of hot Jupiters like HD 189733b and HD 209458b, of Neptune-like planets like GJ1214b and even smaller planets are within reach. Most exoplanet atmospheric observations are averaged spatially, often over a hemi- sphere (during secondary eclipse) or over the limb of the planet (during transit). For favorable targets, longitudinal and latitudinal resolution can also be obtained with phase curve and secondary eclipse mapping techniques respectively. The closer the planet orbits to its star, the easier it is to observe. These hot planets strongly differ from the examples we have in our solar-system. Proper models of their atmospheres are challenging yet necessary to understand current and future observations. In this thesis, I use a hierarchy of atmospheric models to understand the interactions between the thermal structure, the composition, the atmospheric circulation and the long-term evolution of irradiated planets. In these planets, the large stellar irradiation dominates the energy budget of the atmosphere. It powers a strong atmospheric circulation that transports heat and material around the planet, driving the atmosphere out of thermal and chemical equilibrium and affecting its long-term evolution. Future instruments (Gaia, SPIRou, CHEOPS, TESS, PLATO etc) will discover many more planets that the next generation of telescopes (GMT, TMT, E-ELT or JWST) will characterize with an unprecedented accuracy. Models will be tested on a large sample of planets, extending the study of climates to exoplanets.

Using the NEPTUNE-Canada cable-linked ocean-floor observatory we plan continuous, real-time monitoring of the gas hydrate-associated, “Bullseye” cold vent offshore Vancouver Island. Our group inferred the presence of a massive gas hydrate deposit there, based on the significant resistivity anomaly in our controlled-source electromagnetic (CSEM) dataset, as well as anomalously heightened shear moduli, from seafloor compliance data. This interpretation was confirmed by drilling by IODP expedition 311 (site U1328), which indicated a 40 m thick gas hydrate layer near the surface. Sporadic venting and variations in blanking in yearly single-channel seismic surveys suggest the system is evolving in time. We are preparing two stationary semi-permanent imaging experiments: a CSEM and a seafloor compliance installation. These are designed not only to assess the extent of the gas hydrate deposit, but also for long-term monitoring of the gas hydrate/free gas system. The principle of the CSEM experiment is to input a particular electromagnetic signal at a transmitter (TX) dipole on the seafloor, and to record the phase and amplitude of the response at several seafloor receiver (RX) dipoles, at various TX-RX separations. The data are sensitive to the underlying resistivity, which is increased when conductive pore water is displaced by electrically-insulating gas hydrate. The experiment is controlled onshore, and can be expanded to include a downhole TX. Repeated soundings at this site, over several years, will allow measurement of minute changes in resistivity as a function of depth, and by inference, changes in gas hydrate or underlying free gas distribution. Similarly, the displacement of pore fluids by solid gas hydrate will affect elastic parameters. Thus, seafloor compliance data, the transfer function between pressure and seafloor displacement time series, most sensitive to shear modulus as a function of depth, will be gathered continuously to monitor the evolution of the gas hydrate distribution.

Thesis (M.A.I.S.)--Oregon State University, 2011. / Printout. Includes bibliographical references (leaves 137-149). Also available on the World Wide Web.

Cette thèse de doctorat en histoire étudie les rapports religieux entre les Romains de l’Antiquité et les eaux douces avec lesquelles ils ont vécu en proximité. Cette étude part du constat que les Romains sont connus pour leurs savoirs techniques des eaux et leurs aqueducs. Toutefois, les croyances religieuses associées à l’eau n’ont pas encore été examinées dans leur ensemble et demeurent éparpillées à travers l’historiographie. Dans le but de combler cette lacune, cette étude présente une synthèse des cultes dédiés à l'eau par les Romains à partir des sources littéraires, archéologiques et épigraphiques, datant en majorité de la République tardive et du Haut-Empire (Ier siècle av. n. è au IIIe siècle). / This doctoral thesis in history focuses on the religious relationship between the ancient Romans and the freshwater which they lived nearby as inhabitants of a river town. This study starts from the observation that Romans are known for their technical knowledge of water and their aqueducts. However, religious beliefs associated with water have yet to be fully examined and remain scattered throughout historiography. To fill this gap, this study presents a synthesis of the aquatic cultures of the Romans from literary, archaeological, and epigraphic sources, dating mostly from the Late Republic and the High Empire (1st century BC. 3rd century)

Considering that during the Baroque there was arguably nothing more enigmatic than the emblematic tradition, this thesis discusses how emblems played a role in the configuration of subjectivities in New Spain and, more precisely, in their production of symbolic imagery. Through the analysis of the poetic, political, and philosophical functions of the 1680 Neptuno alegórico (Allegorical Neptune), this this study discusses the concepts of "emblem,"ekphrasis"," "syncretism," and "neoplatonic tradition" in one of the most rethorical and multifaceted texts of the humanist writer and Hieronymite nun sor Juana Inés de la Cruz (1648-1695). / Graduate / mplundin@gmail.com

Ce mémoire porte sur le rôle des divinités dans la structure dramatique de la tragédie en musique Idoménée d’Antoine Danchet et d’André Campra, originalement créée en 1712 et remaniée en 1731. L’étude répond à des questions d’ordre structurel quant à l’évolution du genre et montre de quelle façon la représentation des dieux dans Idoménée est liée à une ouverture formelle qui annonce la disparition du prologue, puisque les divinités n’y sont plus confinées à une fonction de louange du roi, mais contribuent activement à lancer l’action dramatique dès cette partie liminaire de l’opéra. Par un bref aperçu historique de la tragédie lyrique et des traditions mythologiques se rapportant à Vénus et à Neptune, ce mémoire questionne la place de ces dieux dans l’univers des hommes, tel que l’envisage la tragédie lyrique, qui démontre, comme on le sait, une propension à unifier les mondes surnaturel et humain. Dans Idoménée, cette unification passe en grande partie par l’usage d’un prologue qui fait office de premier acte, en assurant aux divinités en question une fonction essentielle à la structure dramatique. / This essay focuses on the deities’ role in the dramatic structure of Antoine Danchet and André Campra’s Idoménée, a tragédie en musique originally written in 1712 and rearranged in 1731. This research raises questions about the evolution of this particular genre while aiming to show how the representation of the Gods in Idoménée is linked to a formal opening which announces the disappearance of the prologue during the 1740s, as the deities are no longer used to solely praise the king but actively contribute to start off the dramatic effect as early as this opening part of the opera, thus giving a new function to the prologue. Through a brief historical overview of the French opera genre known as tragédie lyrique and of the mythological traditions linked to Venus and Neptune, this essay questions the place of these two deities in the human universe as envisioned by the tragédie lyrique which, as it is well known, tends to unify the supernatural and human worlds. In Idoménée, this unification mostly occurs through the use of a prologue, which also forms the first act of this drama, giving the deities in question an essential role in the dramatic structure of the opera.

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