This dissertation demonstrates how the cross-disciplinary application of methods and tools from archaeology, philology, and engineering can yield insights into ancient water-supply systems and help to solve problems associated with their precise function and with their description in ancient literature. Conventional calculations determine the flow properties of seven ancient long-distance pipelines. Components of the water-supply pipeline at Aspendos are simulated with a commercially available Computational Fluid Dynamics (CFD) software package (FLUENT® by Fluent Inc.) that is widely used in the design and research of complex flow systems. The application of CFD clarifies the interaction of water and air during the filling process of a pipeline. The project establishes a methodology using state-of-the-art computer simulation tools for the investigation of these systems. The combination of the numerical results with the insights derived from a comparison of Latin technical documents with ancient Greek medical texts answers conclusively some long-term questions that have been plaguing aqueduct research for a long time. The simulation makes visible the flow of water in the pipeline, disproving the long-term misunderstanding that entrained air will form bubbles in the flowing water column that lead to pressure transient. It is possible to explain the function of lateral holes in the sides of pipe segments. The calculated volume flow rates for each pipeline allow estimates about the population sizes for the cities supplies by the aqueducts. The creation of a computer-based methodology for the study of ancient aqueducts will enable scholars to investigate, compare, and catalogue a wide variety of ancient hydraulic systems.

Texte remanié de : Thèse de doctorat : Art et archéologie : Paris 1 : 2000 : Les monuments de l'eau : aqueducs, châteaux d'eau et fontaines dans la ville moderne (1661-1791). / Bibliogr. p.154-156. Notes bibliogr. Index.

It is well established that water quality is directly linked to health. In-line chlorination is one technology that can be used in the developing world to potentially inactivate pathogens and improve water quality. The purpose of this study was to determine the effectiveness of the Panamanian Ministry of Health's in-line PVC chlorinator under three different operating conditions in a rural water supply system. Free and total chlorine were measured entering the storage tank, leaving the storage tank, and at three households along the transmission line of the water system in the two rural indigenous communities of Calabazal and Quebrada Mina in western Panama during April-August 2011. The Ct method for disinfection was used to compare the measured free chlorine concentration to the concentration required to inactivate common pathogens found in gravity flow water systems in Panama, such as E. coli, Salmonella typhi, Hepatitis A, Giardia lamblia, and E. histolytica, as well as other pathogens of interest to the global health community, such as Vibrio cholerae and Rotavirus. When the chlorine tablet was sealed in a plastic wrapper prior to use to prevent contact with humid surroundings, the chlorine was able to dissolve in seven days instead of three hours into the transmission line. The use of one tablet, sealed in a plastic wrapper before use, was able to obtain the required free chlorine concentration estimated to disinfect E. coli, Vibrio cholerae, Rotavirus, Salmonella typhi, and Hepatitis A. However, it did not achieve a free chlorine concentration above 0.27 mg/L needed to inactivate Giardia lamblia nor above 0.35 mg/L needed to inactivate E. histolytica. The use of three properly stored tablets in the chlorinator was able to provide a free chlorine concentration above 0.35 mg/L for only one day, reaching 0.37 mg/L, before falling below 0.35 mg/L to a level of 0.26 mg/L the next day. The study suggests that with three tablets the in-line PVC chlorinator can be an effective technology if slightly more free chlorine concentration can enter the system. The cost of this technology could be allocated to every owner with a house connection in the communities of Calabazal and Quebrada Mina by increasing their monthly tariff by $1 each month.

Despite the recent interest in late antique archaeology and the increasing number of publications on the transformations of towns (both in Spain and in the Roman world as a whole), the concern shown towards aqueducts has been almost non-existent. Some studies have focused on exceptional local examples, such as Rome or Constantinople, but there have been neither general nor regional syntheses of the chronology of the abandonment of aqueducts on a broad regional scale. This thesis consequently fills this gap in our knowledge by offering an all-encompassing study and compilation of the available material and written evidence for aqueducts in Spain in Late Antiquity, it looks at aqueducts in the late Roman period, and how they evolve through the Visigothic and the Umayyad centuries. For this purpose, each aqueduct in the Iberian Peninsula is assessed according to the available information and studied in its wider urban context. By the end of the thesis it is possible to put forward some clear results on the degree of continuity of aqueducts in Spain. The information is used to analyse how the presence or absence of aqueducts affected the development of urban settlement and housing patterns away from a traditional Roman context. Aqueducts had not been at first an essential part of urban life, yet by Late Antiquity they had become so intimately related to it that the end of aqueduct supply modified urban landscapes. Finally, I present various scenarios to explain why aqueducts ceased to function and how the various elite groups of the period (urban aristocrats, the Church, the Visigothic monarchy and the Umayyads) tried to take over the control of the aqueducts, as they were not only extremely useful functional monuments, but also reminders and legitimising links to the Roman past.

Le propos traite de l’aquosité urbaine à Alger. Les recherches dans ce champ sont faibles. On a particulièrement travaillé les archives coloniales, les archives nationales algériennes, les archives du cadastre algérien ; on a effectué une reconnaissance quasi-militaire du terrain pour retrouver les témoins des aqueducs construits (1516-1620) et des puits forés à l’époque ottomane, contemporains des équipements hydrauliques en France, selon Bernard Palissy (Traité des Fontaines, 1580). Des aqueducs à souterazi acheminent l’eau en ville pour près de cent cinquante fontaines publiques, palais et mosquées. Ils pourvoient également en eau les tanneurs, les teinturiers et avitaillent les navires. Par la suite, lorsque la France occupe l’Algérie, la question de l’eau devient prioritaire parmi les militaires, pour la santé et l’hygiène. Ces officiers du Génie et médecins recueillent nombre de données, de relevés et de dessins. Ils recherchent de nouvelles eaux. Ceci est d’ailleurs comparable à ce qui se passe en France et dans toutes les villes, où le souci d’assurer l’alimentation en eau et la salubrité des agglomérations devient une priorité. / The subject deals with urban aqueous in Algiers. Scientific investigations in this field of studies are not very important. We have particularly studied colonial archives, national algerian archives and the algerian archives of the cadastre. Besides this, we have made recognition quasi - military of the field of study in order to discover the witnesses of the aqueducts built between (1516-1620) an the sinking of wells bored during the ottoman period, which are contemporaneous to the equipments hydraulic in France according to Bernard Palissy (Treatise of fountains, 1580)The aqueducts with souterazi bring water to the city by almost a hundred and fifty fountains to the palaces and the mosques. They also provide water to the tanners and dyers and furnish the ships.During the colonial period when France occupied Algeria, the issue of the water becomes a priority for the military man, for the health and the hygiene of the city. The officers of the engineering, the doctors, collected some data topographical statement, draws. They were looking for new sources of water.These studies are the same with what is going on in France and all the cities all over the world, where the problem of the security of alimentation of water and the healthiness of the agglomeration becomes a priority.

Parmi les formes d’organisation de l’habitat antique, il en est une qui est longtemps restée en retrait dans la recherche archéologique française. Les agglomérations antiques, qui correspondent à des formes très variées d’habitat groupé, suscitent un intérêt majeur depuis une vingtaine d’années.L’étude historiographique, à l’échelle de la Gaule, fait ressortir un espace en marge des recherches, celui des cités du Massif central. Cette thèse propose donc d’étudier les agglomérations antiques des cités arverne, vellave, gabale, rutène, cadurque et lémovice entre le Ier s. av. J.-C. et le Ve s. ap. J.-C. Les objectifs sont multiples. Il a été nécessaire dans un premier temps d’établir un corpus de sites à partir de la bibliographie régionale. Celui-ci est composé de notices normalisées au sein desquelles l’ensemble des données actuellement disponibles a été présenté. Pour répondre aux questions d’organisation spatiale et de classification, les données bibliographiques recueillies, complétées par des opérations de terrain (prospections terrestres, aériennes, géophysiques, relevés topographiques), ont été synthétisées à partir d’une série de descripteurs archéologiques développés sur le modèle d’Archaeomedes. L’emploi de ces descripteurs a permis la mise en œuvre d’analyses statistiques multivariées afin de dépasser le simple classement par niveaux de fiabilité (sites rejetés, agglomérations hypothétiques, agglomérations avérées). C’est sur la base de la classification retenue après différents tests et sur la hiérarchie urbaine proposée que les analyses spatiales et morphologiques permettent de brosser un tableau complet de l’armature urbaine des cités antiques du Massif central.Les résultats obtenus ont permis d’exposer et de comprendre à la fois les relations entre les agglomérations et le milieu naturel mais aussi avec leur environnement archéologique par l’étude de leurs relations avec l’habitat rural, les chefs-lieux, les limites des cités, leur territoire théorique, les axes de communications terrestres et fluviaux. En changeant d’échelle, l’analyse interne des agglomérations permet d’appréhender à la fois leur morphologie générale mais aussi la place des édifices monumentaux au sein des agglomérations et au sein des cités, le rôle de l’artisanat, les aménagements hydrauliques, … Pour l’analyse de l’armature urbaine, la thèse prend nécessairement en compte l’évolution chronologique des agglomérations à travers leur origine protohistorique, leur évolution durant l’Antiquité et leur devenir au début du Moyen Âge.Pour mener à bien ce travail, il a été nécessaire de croiser les approches documentaires (bibliographie, opérations de terrains), de croiser les échelles d’analyse (du site au Massif central) et de comparer les résultats à ceux des régions voisines. Passées, les analyses statistiques, c’est à partir d’un SIG et d’une base de données que l’ensemble des synthèses a pu être mené.Cette thèse constitue la première synthèse sur les agglomérations antiques des cités du Massif central. Les résultats mettent en avant l’importance des agglomérations dans le système de peuplement et des armatures urbaines variables entre les cités mais qui semblent structurées en partie par le relief et les axes de communications. Les fonctions présentes au sein des agglomérations, si elles sont variées et récurrentes, montrent des spécificités entre les cités mais aussi une hétérogénéité au sein de chacune d’elles. Enfin, l’analyse chronologique montre une réduction du nombre des agglomérations à partir du IIIe siècle mais pas leur disparition. De même, de nouvelles formes d’habitats groupés apparaissent à partir du IVe siècle attestant non pas une crise mais une évolution dans l’organisation urbaine des cités pour répondre à de nouveaux besoins. / Among the forms of organization one can observe in the ancient habitat, there is one particular structure that has been slightly ignored by French archeologists: the lesser urbanized settlements. However, in the last twenty years, small towns have attracted renewed interest.A historiographical study of the Gaul territory highlighted a less studied group of population: the ancient peoples of the Massif Central. In this thesis we intend to have a closer look at such populations as the Arvernes, the Vellaves, the Gabales, the Rutenes, the Cadurques, and the Lemovices from 1st century B.C. - 5th century A.D. We first established a corpus of sites starting with the study of the regional bibliography, which enabled us to create records for each area. We completed this first approach with several field operations such as ground, aerial, geophysical and topographical surveys. All those data were synthesized in a series of archaeological descriptors developed using the Archaeomedes model.The use of such descriptors enabled us to develop some statistical analyses and go beyond the simple reliability factor (which allows the distinction between rejected sites, hypothetical and true urbanized clusters). On the basis of our tested and proven classification, keeping in mind the suggested urban hierarchy and with the help of our spatial and morphological analyses, we were able to obtain a more complete picture of the urban framework of the ancient cities of the Massif Central.The data collected allowed us to better apprehend and understand the relation between such urban clusters and their natural environment, but also to place them in an archaeological context by studying the links between rural housing, the ancient administrative structure (chef-lieu), the city and territory limits, and the major communication routes (land and water). Through a multi-scale study of those population clusters, we were able to determine their general structure, to look at the role of local crafts and trade but also the place of major buildings, and waterworks. We took specific care to the chronological evolution in thosesmall towns by looking at them from their protohistoric beginnings through Antiquity and until early medieval times.While we cross-referenced all the different sources (bibliography and field surveys) and the analysis scales within the Massif Central, we also did a cross-comparison with other neighboring areas in order to validate such work. Besides the statistical data, we used the Geographic Information System and our database to reach our conclusions.This thesis aims at uncovering the reality of those ancient population clusters present in the Massif Central. Our results showed clearly the importance of those in the settlement system, their different forms structured according to the local geography and major trade routes. The functions/positions available in small towns were varied and recurrent but also corresponded to specific trades within each structure while remaining homogeneous.Through our chronological analysis we were able to point out a significant reduction in their numbers starting in the third century, though not their disappearing. In the 4th century new types of population clusters appeared, not as a response to an acute crisis, but more as a result of an evolution called on by new needs.