Global ETD Search

1	The Pantano Longarini shipwreck: a reanalysis Kampbell, Sarah Marie 15 May 2009 (has links) A late antique shipwreck was excavated in the Pantano Longarini marsh in the southeastern corner of Sicily in the 1960s. Despite its excellent preservation, problematic circumstances surrounding its excavation and publication have resulted in scholars ignoring or misinterpreting it. The majority of the data, including original field notes and documentation, are lost, and the drawings, plans, and photographs that remain are sometimes inconsistent and incomplete. My research reanalyzes the remains of this ship to determine how the Sicilians adapted to their marine and economic conditions within the turbulent socio-economic and political climate of late antiquity. The Pantano Longarini shipwreck demonstrates early stages in a shift from the tradition of plank-based construction to the modern system of reliance on an internal framework for structural support. Contemporary wrecks provide parallels, but unique elements distinguish this ship from those typically studied. Extremely thick timbers, a relatively flat bottom and bow and stern ramps argue that the Pantano Longarini ship was designed to carry bulk loads. Although the ship was originally reported as an extremely advanced ship, the present analysis points to a different type of watercraft: a coastal barge. Correctly identifying the Pantano Longarini ship allows us to gather information about the needs of its builders, as well as extends our knowledge of shipping and ship construction in the seventh century. Pantano Longarini shipwreck Sicily
2	The Pantano Longarini shipwreck: a reanalysis Kampbell, Sarah Marie 15 May 2009 (has links) A late antique shipwreck was excavated in the Pantano Longarini marsh in the southeastern corner of Sicily in the 1960s. Despite its excellent preservation, problematic circumstances surrounding its excavation and publication have resulted in scholars ignoring or misinterpreting it. The majority of the data, including original field notes and documentation, are lost, and the drawings, plans, and photographs that remain are sometimes inconsistent and incomplete. My research reanalyzes the remains of this ship to determine how the Sicilians adapted to their marine and economic conditions within the turbulent socio-economic and political climate of late antiquity. The Pantano Longarini shipwreck demonstrates early stages in a shift from the tradition of plank-based construction to the modern system of reliance on an internal framework for structural support. Contemporary wrecks provide parallels, but unique elements distinguish this ship from those typically studied. Extremely thick timbers, a relatively flat bottom and bow and stern ramps argue that the Pantano Longarini ship was designed to carry bulk loads. Although the ship was originally reported as an extremely advanced ship, the present analysis points to a different type of watercraft: a coastal barge. Correctly identifying the Pantano Longarini ship allows us to gather information about the needs of its builders, as well as extends our knowledge of shipping and ship construction in the seventh century. Pantano Longarini shipwreck Sicily
3	Geology of the Pantano Hill area, Pima County, Arizona Sears, David Hume, 1914-, Sears, David Hume, 1914- January 1939 (has links) No description available. Pantano Hill Region (Ariz.) maps
4	Applications of hydrodynamic and water quality models to the Sau and Boadella Reservoirs Takkouk, Saddek 06 May 2011 (has links) Applicaciò d'un model de hydrodinàmica i de qualitat de l'aigua als embassaments de Sau i Boadella / The aim of this work is to have an idea about the behaviour of Sau and Boedella reservoirs in term of hydrodynamic and water quality, the models applied for are Dynamic simulation model DYRESM and water quality model CAEDYM. / En la tesi s'ha aplicat el model de qualitat de l'aigua DYREM-CAEDYM als embassaments de Sau i Boadella. Els models de qualitat de l'aigua són capaços de predir l'evolució física, química i biològica dels embassaments. Un cop inicialitzats i calibrats ens poden donar informació de com evolucionarà, per exemple, el fòsfor dissolt i les poblacions d'algues. Per funcionar, aquests models necessiten nodrir-se diàriament amb dades meteorològiques com ara la radiació solar, la velocitat del vent o les precipitacions, les quals es poden obtenir d'estacions meteorològiques properes als embassaments. També calen dades biològiques que han estat facilitades per diferents persones i organismes com el Departament d'Ecologia de la Universitat de Barcelona i l'Agència Catalana de l'Aigua. Aquests models no són fàcils de manejar i el primer que s'ha de fer és estudiar-ne la seva aplicabilitat. Concretament, cal saber si poden ser d'una dimensió o en cal un nombre superior. Això es fa comprovant l'evolució de diferents nombres adimensionals, com per exemple els de Wedderburn i Burger. Un cop calibrat, el model DYRESM-CAEDYM prediu -molt bé- l'evolució de la temperatura i -bastant bé- la de l'oxigen dissolt, sobretot a l'embassament de Sau,indicant la presència de zones anòxiques al fons. La tendència en l'evolució del fòsfor dissolt també s'hi veu ben reflectida. En canvi, les simulacions de la clorofila-a, indicativa de les algues, no són tan acurades ja que depenen de molt factors, alguns dels quals no queden prou reflectits en el model. L'objectiu final de la tesi és poder millorar la gestió dels embasaments indicant, per exemple, quina és la fondària òptima d'extracció de l'aigua. Sau Reservoir Pantà de Sau Pantano de Sau Boadella Reservoir Pantà de Boadella Pantano de Boadella Reservoir ecology Ecologia de pantans Ecologia de pantanos Water quality Qualitat de l'aigua Calidad del agua 55
5	The Structure of the Pantano Beds in the Northern Tucson Basin Abuajamieh, M. M. January 1966 (has links) A gravimetric survey has proved its usefulness in the Tucson Basin in locating important structural features, their geometric shapes and extensions. Interpretation was made possible through the correlation of available geologic and hydrologic data from water well logs and water table contour maps. Geophysical logs from a recently drilled test well in North Tucson have been interpreted and have confirmed the existence of another promising aquifer, namely, the deformed gravel which underlies the upper basin-fill aquifer. In most cases, it is apparently separated by a thin aquiclude of clay which results in artesian condition in the lower aquifer. Gravity interpretation discloses the presence of buried channels that may be of importance to groundwater exploration. The buried high basement ridges or faulted blocks as interpreted from gravity data add more information to the understanding of the hydrologic behavior of the basin. Deep drilling of test wells, such as the one drilled recently on Orange Grove Road, will be a useful check to the structures interpreted from gravity data. Geophysical logs of bore holes are of utmost importance in correlation of lithologic units and structures in addition to the hydrologic interpretation that is possible from these logs. The Pantano beds as described here are not promising for new groundwater sources that may be used for domestic needs due to the very low permeability and the expected poor quality of the water. Still more information is necessary to determine clear answers to many problems related to the geology and hydrology of this basin. Arizona Pantano Beds sedimentary rocks structural geology structure structure of Pantano Beds tectonics Tucson Basin United States Geology -- Arizona -- Pima County
6	Basin-scale hydrodynamics in a Mediterranean reservoir. Implications for the phytoplankton dynamics Vidal Hurtado, Javier 27 April 2007 (has links) Procesos hidrodinámicos determinan, en un alto grado la calidad del agua en embalse, sin embargo dichos procesos han sido tradicionalmente olvidados en la gestión de embalse. En esta tesis se presentan evidencias de los principales procesos hidrodinámicos que ocurren en un embalse Mediterráneo a escala de cuenca a través de campañas experimentales y modelización numérica; y su influencia en la dinámica de poblaciones de fitoplancton. Dichos procesos son principalmente la generación de ondas internas o secas y la intrusión del río. La presencia de viento periódico genera secas forzadas, amplificando los modos cercanos al periodo del viento, de manera que modos verticales altos, considerados como raros en la naturaleza, tienden a dominar en el sistema. / Physical processes determine, to a large degree, the ecological response of a reservoir to inflows, outflows and meteorological forcing. This PhD thesis therefore aims to give an assessment of the main physical mechanisms governing Mediterranean reservoirs. The main basin-scale hydrodynamical processes are the generation of seiches and the gravity currents generated by the river inflow. The periodicity of the wind forcing makes that the reservoir responses as a forced harmonic damped oscillator being the natural modes of oscillation close to the forcing period preferably excited; including high vertical modes considered rare in the nature. The fate of the river inflow nutrients input generates horizontal heterogeneities in the community of phytoplankton. Sau reservoir Pantano de Sau Pantà de Sau Phytoplankton Fitopláncton Fitoplàncton Ones internes Internal currents Ondas internas Hidrodinàmica Hydrodynamics Hidrodinámica Physico-biological coupling Acoplamiento físico-biológico Limnology Limnología Limnologia 53 55
7	Stratigraphy and Depositional History of the Pantano Formation (Oligocene-Early Miocene), Pima County, Arizona Balcer, Richard Allen January 1984 (has links) The Pantano Formation comprises 1,250 m of alluvial, fluvial, lacustrine, and volcanic rocks deposited in a basin formed in response to regional extension during mid- Tertiary time in southeastern Arizona. During deposition, the locations and composition of sediment source areas varied as contemporaneous uplift occurred adjacent to the basin. The lower half of the formation was deposited as alluvial fans that prograded northward, westward, and southward; the upper half was deposited during southwestward retreat of alluvial fan deposition and the onset of lacustrine deposition. An andesite flow separates the two depositional regimes. Radiometric dates of 24.4 ± 2.6 m.y. B.P. for the andesite and 36.7 ± 1.1 m.y. B.P. for a rhyolitic tuff disconformably underlying the formation indicate that deposition occurred during Oligocene to early Miocene time. Proper stratigraphic sequencing and description, paleocurrent analysis, and gravel provenance study aided in understanding the depositional history of the formation. absolute age alluvial fans andesites Arizona Basin and Range Province basins Cenozoic dates environment geochronology igneous rocks interpretation lacustrine environment Miocene Neogene North America Paleogene Pantano Formation Pima County Arizona provenance rhyolites sedimentary basins sedimentary rocks sedimentation southern Arizona terrestrial environment Tertiary United States volcanic rocks Geology, Stratigraphic -- Miocene Geology, Stratigraphic -- Oligocene

1

Page generated in 0.0495 seconds