Dissertations / Theses on the topic 'Bassin de (Tunisie)'
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Ben, Gsim Abdessatar. "Contribution à l'étude hydrogéologique du bassin versant de l'oued Ras el Ma (Atlas Tunisien Central)." Paris 11, 1987. http://www.theses.fr/1987PA112495.
Full textDhaoui, Ridha. "Contribution à la définition des évolutions des systèmes géomorphologiques et des risques érosifs dans le bassin de Kairouan (Tunisie)." Rennes 2, 2009. http://www.theses.fr/2009REN20037.
Full textThe current geomorphological Basin Kairouan (Central Tunisia) controls the operation of many existing processes such as the process of salinization and diffuses runoff and concentrated. But these processes do not only depend on the geomorphology: climate and human activities also play. This work tries first to understand the processes operating géomorphogénique Basin Kairouan, then highlight the impact of the geomorphological structure of the operating environment and agricultural development on the development of salinity and assess the vulnerability to erosion, partly in relation to salinity, the risk of runoff and topography. The methodology used is different depending on the theme for the organization Geomorphologic Basin Kairouan, the methodology is to use topographic maps, geological maps and satellite imagery to create a geomorphological map, a DEM and a map slopes. To map the current expansion of salinity in the alluvial plains of Kairouan, the methodology used is based on the simultaneous use of a Landsat ETM image acquired on 08 February 2001, data from field measurements of salinity and geomorphological data. It appears from this application as the geomorphological sequences carried out according to the spatio-temporal models show rates high in salt formations superficial alluvia present a very slight rate of salinity in the alluvial formations cone spray Holocene, and a lack of salinity in the surface formations of Pleistocene materials. There is also an enrichment of salt to the depth in the modeled Pleistocene and Holocene. The methodology to identify areas susceptible to erosion risk in the agricultural basin of Kairouan is to determine the first large surface textural formations from geomorphological map drawing also on the results of granulometric analysis. The soil map of Belkhodja (1970) and the work of Bahri (1982) may have served to complement our data. The textures are based on the triangular diagram of textures. These textures are translated into the ability to battance. The latter seeks to determine the distribution of classes of sensitivity to erosion and erosion risk by integrating land use, slope map and aspect and wind hydroéliens. This study revealed the importance of agricultural erosion risk in the Basin of Kairouan. Sector North West is generally the most exposed to risk of erosion because the plots of grain and the lands are located mainly in areas with high and medium risk battance in conjunction with high slopes
Chouat, Madi. "Les techniques de maîtrise de l'eau dans le bassin-versant de l'Oued Fessi (sud tunisien)." Poitiers, 2002. http://www.theses.fr/2002POIT5018.
Full textZerai, Kamel. "Les environnements holocènes et actuels dans le bassin versant de l'oued Sbeïtla (Tunisie centrale)." Paris 7, 2006. http://www.theses.fr/2006PA070054.
Full textThis thesis, which focuses its interest to the study of the holocene palaeoenvironments and stratigraphy of the sbeïtla wadi catchment, is the first of its kind in tunisia. To achieve the aim of the study a multidisciplinary approach was adopted using sedimentology, palynology, radiocarbon dating, and archaeology techniques. The recent morphogenesis in the catchment area was studied on the basis of a quantitative analysis, using a photographic database (aerial photographs, landsat and spot imagery), digital mapping, gis, dem and field data. The raster and vector data of the gis were georeferenced in the same projection, and partially orthorectified. The quantification of the erosion and its comparison to a long-term climatic data allowed further appreciation of the recent morphogenesis changes and also used to determine the relative importance of the various factors and process involved. This comprehensive assessment was instrumental in recommending practical and effective solutions to combat land degradation and desertification in the study area. The downstream of sbeïtla wadi is currently subject to serious aeolian sand encroachment, human population decline and reduced vegetation cover and animal production
Salhi, Bilel. "Mutations socio-spatiales et environnementales du bassin minier de Gafsa (Sud Ouest de Tunisie) : apport des outils géomatiques." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA3006/document.
Full textSince the end of the 19th century, the mining area of Gafsa (south-west Tunisia) has specialized in the single-activity extraction and enrichment of phosphate for reasons of economic profits. With these exports, this area has suffered an intense degradation of soil resources, vegetation cover and an advanced deterioration of agricultural areas. The management of the mining infrastructure has failed to meet environmental standards, causing social and spatial inequalities and increasing the level of environmental risks.The mining activity was at the origin of the birth and genesis of the mining towns in the Basin of Gafsa (BMG). The formation of spontaneous cities has caused the disarticulation of the urbanization. Urban extensions, including the expansion of anarchic cities, extending to laundries and to mines, thus created conflicts with the phosphatier domain. All these factors make costly and complicated attempts at development and rehabilitation that mining companies do not dare to commit.Taking into account the complexity of the many social, spatial and environmental aspects of the BMG, we used both the classical geographical approach and the geomatics approach that seemed appropriate for better decision-making. The interest of this latter approach makes it possible to identify, analyze, and model the state of the sites, the urban and environmental mutations in relation to the spatial-mining growth
Ben, Ayed Abdesslem. "Étude de la dynamique actuelle du bassin-versant du Masri. Nord-est de la dorsale tunisienne." Caen, 1987. http://www.theses.fr/1987CAEN1024.
Full textThe basin side at the Masri know an rate ablation, the more high of the Tunisia. The study at the present dynamic schow which the man action is characterized by an ancient exploitation, with an important clearment ant the expansion an open cerealcultivation. That action was reflected on the biocenose, with a development a scondary, low and open forest vegetable formation and a qualitative and quantitative animal change. While the morphogenesis stay dominate by humid climate with a season contrast, develop the landslides and the linear stream. This study permit a identifing some progressive dynamic unity and other regressive and at reveal the prominent rock structures, climate and man factors in the present dynamic. While the seismicity part is weak and we note the absence at a climate change during the recent period
Ouaja, Mohamed. "Étude sédimentologique et paléobotanique du Jurassique moyen - Crétacé inférieur du bassin de Tataouine (Sud-Est de la Tunisie)." Lyon 1, 2003. http://www.theses.fr/2003LYO10160.
Full textFehri, Noômène. "Les rapports entre les processus morphogéniques et les pratiques agro-pastorales dans la plaine oléicole de Sfax : exemple du bassin versant de l'oued Chaal-Tarfaoui (Plaine de Sfax, Tunisie centro-orientale)." Aix-Marseille 1, 2003. http://www.theses.fr/2003AIX10103.
Full textLacombe, Guillaume. "Evolution et usages de la ressource en eau dans un bassin versant aménagé semi-aride : le cas du Merguellil en Tunisie centrale." Montpellier 2, 2007. http://www.theses.fr/2007MON20137.
Full textOunalli, Nadia. "Impact des politiques publiques de développement sur le fonctionnement et la durabilité des systèmes d’activités : le cas du bassin versant d’Oued Oum Zessar, Sud-est tunisien, Médenine." Thesis, Montpellier 3, 2014. http://www.theses.fr/2014MON30037.
Full text6Impact of public policy development on the functioning and sustainability of activity systems: The case of watershed Oum Zessar, Southeast Tunisian, MédenineABSTRACTDespite the lack of natural resources and their fragility in the south of Tunisia, agricultural and rural development was obtained through public transfers to disadvantaged areas. Permanent public transfers, which still continues despite the adoption of liberalization policy, has improved rural development indicators and insured satisfactory coverage of population needs through national production.However, this policy has reached its economic, social, ecological and financial limits (Elloumi 2006): economic and social limitations are caused by the difficulty to implement an urban development policy that constitute an alternative to the rural population, which should leave the agricultural sector to make the still existing farms more profitable and sustainable; ecological limits are due to the excessive use of naturals resources in fact influenced by climate change; financial limits are due to the pressure excreted by the need to ensure long-term financial transfers to the rural population and the vulnerable agricultural sectors.Understanding and evaluating development policies has become a necessity. In fact, the analysis and evaluation of public policies are intellectually interconnected. They play a complementary role to understand the results, redefine objectives and finally to improve the policies. Analysis and evaluation should be the final steps of the long process of development and implementation of public policy.The objective of this thesis is to evaluate a various rural development projects implemented in the Oum Zessar watershed. The analysis of the different development experiences is accompanied by an assessment of the water and soil conservation strategy. Two complementary methodological tools were used; the Framework of Participatory Impact Assessment (FOPIA) method and Multi criteria Analysis (MCA) method
Abbas, Khairat. "Suivi par télédétection multi-source du bassin endoréique du Chott El Djérid (Tunisie) entre 1985 et 2015." Thesis, Reims, 2016. http://www.theses.fr/2016REIMS008.
Full textChott El Jerid is one of the most important endorheic salt lake or playa lakes in the world. During the flooding stage, the Chott is mainly filled by two temporary lakes separated by the causeway P16, after high rainfalls and/or groundwater recharge. Spatial variations of flooding-desiccation cycle are illustrated by a faster flooding and drying on the southern edge of Chott than the northern. The temporal variation was illustrated by the comparison between the winter flood in 2009, the spring flood in 2007 and the flood of June 2014 (the only flood during the dry period). During this cycle between April and August 2007, the reflectance values varied from 2 to 37 % to the south of the causeway and from 2 to 31 % to the north. The reflectance values are higher and their increase was faster to the south of the causeway than to the north. The behaviour of precipitation, concentration and distribution of the evaporites on the Chott follows the behaviour of flooding and desiccation. After the final desiccation of the playa lake, the mineralogy of salt crusts comprised an assemblage dominated by halite to the south of the causeway and by gypsum to the north. Gypsum crusts appear highly dynamic in space and time, and they are more widely distributed than halite crusts. The LSR (Landsat Surface Reflectance) data provide information about the mineralogical nature of evaporites of the Chott, although LSR offers only a medium spectral resolution. The study also provided information on the other landscape-units such as aioun, the sandy border, etc
Jabir, Adel. "Étude stratigraphique, sédimentologique et paléogéographique des séries paléozoïques du nord du bassin de Ghadamès et de Jefarah en Libye et en Tunisie : caractérisation des réservoirs potentiels." Thesis, Bordeaux 3, 2017. http://www.theses.fr/2017BOR30031/document.
Full textThe sedimentology and tectonics and their relationship of the Paleozoic series that fill the Ghadames basin and its northern extension consisting of the Jefarah basin in Libya and Tunisia was studied. These formations belong to the Gondwana cycle and are typically interpreted as being deposited in a cratonic basin truncated by the Hercynian unconformity. This study is based on wells. The stratigraphic correlation between the wells is based on the definition of second order cycles. This allowed to produce isopach maps of facies distributions and to reconstruct the paleogeography of the different stratigraphic units. These data allow to address the nature of the deformation and also clarifies the behavior of active high regional areas during the Palaeozoic. The Paleozoic succession in the Ghadames and Jefarah basins can be divided in to five first order sequences, bounded by major tectonic unconformities with sequence duration of 40 - 70 Ma. Within these five sequences eighteen second order sequences (10 - 40 Ma) were differentiated, describing Sequence Boundaries (SB), Maximum Flooding Surfaces (MFS) and sedimentological characteristics. Twenty six wells with its geological well reports and well logs have been used in the study area, i.e. the Ghadames and Jefarah basins (Libya) illustrate how reservoir properties changes laterally and vertically through time (from a proximal to a distal sitting). Two softwares were used, JLog (version 4) petrophysical software for reservoir property analysis and PETREL (Schlumberger software 2014 version) for constructing stratigraphic correlation models. The Paleozoic reservoirs in the study area are spread over a large range of siliciclastic reservoirs with the prospective section extending from Cambrian to Permian. Hydrocarbons within the Ghadames and Jefarah basins originated from two major source rocks: i.e. the Lower Silurian Tanezoft Formation and Middle-Upper Devonian Aouinat Ounine Formation. The nine main Paleozoic reservoirs are respectively the Hassaouna, Haouaz and Memouniat Formations (Lower Paleozoic), Acacus, Tadrart, Ouan Kaza and Tahara Formations (Middle Paleozoic) and M’rar and Asadjefar Formations (Upper Paleozoic). Six stratigraphic cross sections through the area have been reconstructed to illustrate the vertical and lateral reservoir extensions. The dataset demonstrates that the Paleozoic reservoir properties are influenced by both, depositional facies and position within the paleogeographical setting (from proximal to distal part)
Mekki, Insaf. "Analyse et modélisation de la variabilité des flux hydriques à l'échelle d'un bassin versant cultivé alimentant un lac collinaire du domaine semi-aride méditerranéen (Oued Kamech, Cap Bon, Tunisie)." Montpellier 2, 2003. http://www.theses.fr/2003MON20176.
Full textAbderrahim, Mohamed Lofti. "Contribution de l'imagerie numérique à l'analyse des phosphates : application au bassin phosphate de Gafsa (Tunisie)." Saint-Etienne, 1996. http://www.theses.fr/1996STET4015.
Full textEl, Amri Rached. "Contribution a l'etude hydrogeologique du bassin de l'oued et hechim - garaa hamra (region de kasserine, tunisie)." Paris 11, 1992. http://www.theses.fr/1992PA112504.
Full textBoujarra, Ahmed. "Recherches geomorphologiques dans le bassin versant de l'oued sbiba (tunisie centrale ). Application a l'amenagement anti-erosif." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR10016.
Full textGeomorphic unities distribution in the ouady of sbiba basin which is directed by geological structure is closely connected to the quaternary morphogenic and pedogenic evolution. The latter is expressed as following: - in the mountains: it's emphesiezed by the genesis of forms and formations related to a cold dynamic. (richter slope; pavements of gelifracts recovering the hogbacks calcareous). - on the pediments, by the developement of glacis and alluvial terraces levels. They are whether fitting toge ther, or arranged. In sidi merzoud depression, limited on both sides by grabens, the replay of faults edge at the end of middle quaternary has provoqued the folding of tensi- ftien glacis. The modifications in the run-off conditions, who are provoqued by enlighement of forested vegetal cover, cleared land pasture, extented land cultures, and locally by the under designed anti-erosive amenagements have accelerated erosive process. Its manifestations are the following: - in the mountains: on the hogbacks, the concentration of following becomes speedy. The richter slopes grows up to a source of sediments to alluvial cones. - on the pediments: denudation process is getting more active and gullying is hiearchized on terraces. - in sbiba plaine, alluvial cones have been formed since september 1969. The beds of ouadies who drain the plaine have extented. (the ouady sbiba surface has doubled between 1952 and 1973). To protect this plaine from these phnomenans, amenagements proposals were formulated. They take under consideration physical caracteristics of each type of soils and geomorphic unities. They take under consideration too, the erosive dynamic which rules it, and of acquired experience in anti-erosive amenagement topic
Abichou, Abdelhakim. "Les changements de paysages du bassin-versant de l'Oued Tataouine-Fessi (sud-est tunisien) : étude multiscalaire et microphologie des remplissages de sebkhas et étude des états de surface." Bordeaux 3, 2002. http://www.theses.fr/2002BOR30040.
Full textSebkhas and paleolacs within the catchment areas of wadi Tataouine-Fessi did register the landscape changings during the Holocène. Micromorphological investigations of the ferrous. Carapaxes in the sebkha Erg el Makhzen point a carapax-formation under water. Fluvio-lacustrine-palustrine sediments and carbonic stromatolites evidence the extended lakes the lower holocene. The Flandrien transgression was the time of stomatolite and oolithic reef formation in the sebkha lagoona of el Melah. However, in the Upper Holocene the sebkha filings of the sebkhas Melah and Mehabeul were of continental origine. The importance od soil cartography is underlined by multiscale mappig of the soils surfaces situation. The state of the soil surface register events too and work as a short time memory
Ben, Ayed Abdesslem. "Etude de la dynamique actuelle du bassin versant du Masri, Nord-Est de la dorsale tunisienne." Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376027850.
Full textChalghaf, Bilel. "Distribution spatio-temporelle de la leishmaniose en Tunisie et dans le Bassin Méditerranéen : apport de la géomatique." Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/11059.
Full textAbstract : Leishmaniasis is endemic in 98 countries with an estimated global prevalence of 12 million cases. The yearly incidence of visceral leishmaniasis is estimated to be 0.3 million cases, while cutaneous leishmaniasis affects approximately one million people each year. In Tunisia, cutaneous leishmaniasis is still a serious health problem with thousands of cases reported every year. Since its first emergence as an epidemic in Kairouan in 1982, the disease has spread in several parts of the country. Control of cutaneous leishmaniasis is mainly based on surveillance of incident cases and treatment and studies carried out to elucidate the spatio-temporal dynamics of the disease are based only on time series analysis of the incidence. The geographical distribution of sandflies during the last decades has shifted northward from latitudes below 45○N in south Europe to latitudes just above 50○N. Recent studies show that some phlebotomine sandflies were recorded in several parts of Germany and Belgium. In Central Europe, some autochthone leishmaniasis cases are being recorded in region traditionally regarded as leishmaniasis-free countries. The objective of this work, in a first step is to i) predict the geographical distribution of cutaneous leishmaniasis and P. papatasi the main vector of the disease in Tunisia. ii) Assess the importance of environmental factors influencing the vector and disease distribution using ecological niche modeling. In a second step we attempted to i) predict the actual distribution of six leishmaniasis vectors in the Mediterranean basin. ii) predict the change in the geographical distribution of these vectors under different climate change scenarios. The MaxEnt model was used to predict the distribution of P. papatasi and cutaneous leishmaniasis cases. 24 environmental variables describing topography, land use and climate were collected. A filed survey was conducted to collect P. papatasi and cutaneous leishmaniasis cases occurrence points. MaxEnt showed a good performance for the prediction of the vector and the disease cases with an area under the ROC curve higher than 0.95 and a maximal Kappa coefficient higher than 0.7. Furthermore, population under the risk of cutaneous leishmaniasis was assessed based on population density by district and vector distribution predicted by the model. To elucidate the effect of climate change on the distribution of various leishmaniasis vectors in the Mediterranean basin, occurrence points of the studied species were collected from scientific literature between 2006 and 2012. Moreover, series of climatic variable describing temperature and precipitation for 2020, 2050 and 2080 under two climate change scenarios were obtained from the global climate database WorldClim. A consensus model was derived from six individual model based on three modeling techniques (statistical regression, machine learning and classification). The consensus model presented a good performance with a specificity varying from 81% to 96.5% and a sensitivity varying from 88% to 100%. The study confirmed the hypothesis of large spread of leishmaniasis vectors under climate change scenario. All studied species are supposed to invade new areas, actually not favourable to the vectors survival.
Maraoui, Telmini Boutheina. "Les vases biberons puniques dans le bassin occidental de la Méditerranée : monographie d'une forme." Aix-Marseille 1, 1996. http://www.theses.fr/1996AIX10126.
Full textThis thesis deals with a monography having the shape of punic ceramics called feeding bottles. This shape has been regulary diffused since the end of the vth century b. C. (or the begining of the ivth century b. C. ) throughout all the punic sites of the occidental mediterranean until the destruction of carthage. The typology of this shape, as well as the chronological and the decoration information, allow to determine the origins of the main varieties beyond a certain geographical distribution that reflects the most important regional characteristics inside the punic world. In addition, they have permitted to detemine the most important components of the punic civilization. The latter can be distinguished by a certain kind of originality which can be seen in the typical uses assigned to these feeding bottles by the punics in the antique times
Jeribi, Leila. "Caractérisation hydrochimique et isotopique des eaux du système aquifère de bassin de Zeroud (plaine de Kairouan, Tunisie centrale)." Paris 11, 2004. http://www.theses.fr/2004PA112305.
Full textThe hydrogeologic basin of the Zeroud is an endoreic basin that belongs to the Sahel field, separated to the Atlasic field by the north-southern tectonic outline. It is governed by a semi-arid climate and it is characterized by enough developed surface network, dominated by the Zeroud wadi. The multilayered aquifer system of the Zeroud basin is characterized by the complexity of its hydro-dynamics due to both natural (structure) and anthropic (management) features. This study is based on the chemical (major) and isotopic analyses (18O, 2H, 3H, 13C, 14C) of the groundwater (mio-plio quaternary), of the precipitations and of the surface reservoirs waters. The hydrochemical and isotopic data shows two underground flow directions: West-East (identified by hydrogeology) and from the minor bed of Zeroud wadi towards the South and the North. Therefore, the Zeroud bed constitutes a big axis of the recharge of the aquifer system. The contribution of the wadi floods to the recharge of the deeper groundwater is limited at the upstream part of the basin. However, the recharge of the shallow aquifer take place from the Zeroud floods in all the bed area, from the El Mansoura wadi floods and from the local rainfall infiltration throughout the basin and in the border relief piedmonts. The radiocarbon dating of the groundwater indicate a variable times of residence on the whole aquifer system, from the Actual age to ages superior than 35 B. P. Ka. The recharge of the deeper reserves has been done mainly during the humid phases of the Holocene and the Tardif Pleistocene. Mixing between recent and old water masses and vertical stratification of waters were identified. The transit velocity of the deeper waters, calculated from carbon-14 ages, vary between 1 and 45 m/year. The heterogeneity of the chemical and isotopic data in the deeper waters indicated the presence of more than three aquifer levels in the deep system. A "confined" aquifer, which characterised by chloride-sodium water type and a good quality, exploited only in the southern part of the Zeroud basin was identified. The dissolution of evaporate and carbonate minerals constitutes the dominant process in the acquisition of the mineralisation. The waters of Zeroud water contribute also to the salinisation of waters around its bed
Dridi, Boutheina. "Impact des amenagements sur la disponibilite des eaux de surface dans le bassin versant du merguellil (tunisie centrale)." Université Louis Pasteur (Strasbourg) (1971-2008), 2000. http://www.theses.fr/2000STR1GE02.
Full textOgilvie, Andrew. "Caractérisation des ressources et usages de multiples hydro-sociosystèmes : les retenues collinaires du bassin du Merguellil (Tunisie centrale)." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS092/document.
Full textSmall reservoirs and other water and soil conservation techniques have become increasingly widespread across semi-arid regions, due to their ability to reduce transportation of eroded soil and harvest scarce and unreliable rainfall for local users. Revealing diverse but often limited levels of agricultural water use, the reasons behind these were explored based on assessments of water availability, practices and associated drivers upscaled across 50 small reservoirs in the Upper Merguellil catchment (Central Tunisia). MNDWI on 546 treated Landsat images over 1999-2014 were used in combination with extensive field data to develop and validate water availability assessments for all reservoirs. An Ensemble Kalman Filter approach was used to combine remotely sensed surface area with a GR4J-water balance model and notably reduce runoff uncertainties arising from highly variable and localised rainfall intensities. These notably reduced mean annual availability RMSE to the order of 10 000 m3 on lakes where initial capacities vary between 20 000 m3 and over 1 000 000 m3, and identified the potential of each lake to support agriculture during the dry season.In parallel, rapid surveys, quantitative questionnaires and semi directed interviews were used to identify water uses and socio economic and institutional drivers influencing the smallholder livelihoods around these reservoirs. Using multi-stage samples of farmers allowed to progressively narrow and refine the analysis which were then upscaled based on typologies of lakes. Results confirmed withdrawals remained limited and focussed essentially on the occasional watering of fruit trees. On a handful of lakes, water resources were a limiting factor but rarely a sufficient factor to explain the heterogeneous water uses observed around reservoirs. Most farmers were not equipped with the suitable capabilities to increase their withdrawals as a result of problems over pumps, water access and conflicts, compounded through limited and short term government assistance. Individual successes were observed as a result of farmers possessing adequate economic resilience and/or means to secure alternate water supplies during dry spells. Faced with limited available storage capacities and prolonged droughts, small reservoirs must in this climatic context retain their supplementary irrigation focus and not strive to support widespread intensification of practices
Mjejra, Mustapha. "Étude de l’évapotranspiration dans le bassin versant de Mejerda ( en Tunisie) : apport de la télédétection satellitaire et des Systèmes d’Information Géographique." Thesis, Rennes 2, 2015. http://www.theses.fr/2015REN20050/document.
Full textThe objective of this work is to realize, first, mapping evapotranspiration at the regional level and to identify, secondly, a zoning of the evaporation deficiency in the watershed Mejerda. This objective is based on improving the performance of the FAO model-PM, and the combination of this model with the satellite data (MODIS-Terra). This work concerns the Mejerda watershed, considered "the water tower of Tunisia", it occupies a prime position in the water resource mobilization strategy and it has the largest agricultural potential.Mapping evapotranspiration allowed to characterize the spatial variation and temporal variability of its three forms (FTE ETM and ETR) Mejerda in the watershed and to distinguish between the sub-regions that were known only to a very empirical. Temporal fluctuations are quite important: the values for January averaged 15% of those of July. Spatial variation is mainly related to the land use map since forest vegetation evaporates more than annual vegetation and the effect of terrain and site. Sheltered sectors are characterized by a power évapotranspérant highest (plain of Jendouba, Siliana depression).The zoning of the evaporation deficiency, developed y the clustering method, showed a new division of the watershed Mejerda. In this regard, the sub-regions, slightly different to those known for the most part, have been distinguished. This is the case of Mejerda average that is often attached to high Mejerda and a sharp contrast between the southern slopes of Kroumirie and the northern slopes of the Dorsal. This configuration is associated with the effect of exposure, vegetation behavior and the state of the soil water content. The zoning of the evaporation deficiency also shows two gradients den water stress vegetation. Indeed, the stress intensity decreases from north to south of the region and altitude resorts to valley bottoms
Fadhlaoui, Sahbi. "Héritages holocènes et dynamiques morphologiques du bassin versant de l’oued Massengh et ses confluences avec les oueds Sbiba et el Hathob (Dorsale Tunisienne-Tunisie du centre ouest)." Thesis, Paris 4, 2017. http://www.theses.fr/2017PA040228.
Full textThis thesis focuses on the study of paleoenvironmental and Holocene morphological dynamics in the watershed Massengh and its confluence with the wadis and Sbiba el Hathob (Tunisia's center-west). After studying the physical part of the evolution of Holocene and current environments, the thesis focusesinitiallyon chronostratigraphy inheritances and sedimentary archives. The reconstruction of paleoenvironmentaland morphogenesis Holocene is attempted, in a second step. To summarize, the thesis studies in depth the currentmorphodynamic evolution of the fluvial environment across the space of confluences
Bibonne, Romain. "Sédimentologie et stratigraphie des séries clastiques du Trias inférieur à moyen du bassin de Ghadamès et de la Jeffara (Tunisie et Libye)." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAH020.
Full textDuring the opening of the Neotethys Ocean north of the Ghadames and Jeffara basin, an extensional phase created subsidence. It resulted in the deposition of the first syn-rift strata aged Middle to Upper Permian (El Watiah formation) and Lower to Middle Triassic (Bir el Jaja, Ouled Chebbi and Ras Hamia / Kirchaou formations). This study provides details of the stratigraphic and sequential architecture of triassic siliciclastic series and the upper clastic part of the El Watiah formation. 221 wells and 18 sedimentological field sections (outcrops from south Tunisia) have been correlated across the entire Ghadames basin and Jeffara. An organization in 11 sequences has been highlighted. 28 isochores and paleogeographic maps have been drawn. In terms of tectonostratigraphy, a major thickening of sequences has been confirmed toward the North of Jeffara, resulting from a very strong and differential subsidence. Low and subtle differential subsidence has been demonstrated in the southern part of the basin. In addition, a new sedimentological interpretation of the TAGI formation (lateral equivalent of the ladinian Ras Hamia formation) has been considered in the El Borma area
Ben, Hamza Chedli. "Bilan hydrologique, sedimentologique et geochimique d'un bassin versant en zone semi-aride : la medjerda (tunisie du nord): impacts sur l'environnement." Paris 6, 1994. http://www.theses.fr/1994PA066041.
Full textHezzi, Imed. "Caractérisation géophysique de la plateforme de Sahel, Tunisie nord-orientale et ses conséquences géodynamiques." Phd thesis, Université Rennes 1, 2014. http://tel.archives-ouvertes.fr/tel-00995595.
Full textJouini, Meriem. "Evaluation environnementale des pratiques agricoles et des aménagements de conservation par ACV : cas du bassin versant de Merguellil de la Tunisie centrale." Thesis, Montpellier, SupAgro, 2019. http://www.theses.fr/2019NSAM0001.
Full textIn semi-arid areas, agriculture is based on limited and fragile "water and soil" resources that are often overexploited. To ensure the sustainability of agricultural land management in rural areas, environmental assessment must be integrated to support decision-makers and local stakeholders in their decision-making. Due to its comprehensiveness, life cycle assessment (LCA) is one of the most widely used tools for environmental impact assessment. It has global approach (all potential environmental impacts are considered) and life cycle thinking ("cradle to grave"). However, LCA is difficult to apply in rural areas of developing countries. First, LCA requires a lot of data that is difficult to collect because of the diversity of small farming systems. Second, the results of LCA are difficult for non-specialists to interpret because of the complexity of its multiple indicators. Third, the processes included in LCA often do not correspond to the values and interests of stakeholders. Our study area is located upstream of the Merguellil catchment in central Tunisia, a Mediterranean country, characterized by a semi-arid climate with high variability of precipitation and is considered an important recharge area for aquifers. The upstream Merguellil brings together major environmental challenges such as variable and limited resources, over-exploitation of water resources, poor control of access to groundwater and accelerated soil degradation. These problems are also encountered throughout the Mediterranean region. The rapid expansion of conservation measures and of intensive irrigated cropping systems have raised the question of their environmental impacts and particularly on the soil resource. In the context of managing common "water and soil" resources and taking into account the diversity of agricultural practices within a rural area, it is important to assess the impacts at the scale of a territory. Our main objective is to provide decision-makers with knowledge on the environmental impacts of water and soil conservation works (WSCW) and the most relevant cropping systems by LCA at the territory level. In this thesis, we proposed a progressive and iterative participatory approach to analyze the territory in relation to its history, its components (living territories), its functions, its agricultural productions systems and its social components (families). We provided conceptual models shared by all stakeholders, we also collected and validated all the data necessary for the environmental assessment. An innovative methodological framework was proposed to link LCA with this participatory approach and made it possible to analyse the environmental impacts of all cropping systems. Finally, the consideration of the impacts of water and soil conservation works in LCA has been the subject of a specific development. Two indicators were explored using a distributed erosion model (LandSoil): erosion resistance and mechanical filtration. These developments provide all the methods and data to inform decision-making in the context of participatory land management, and in particular to define a sustainable development strategy for water and soil conservation works
Hamza, Ali. "Erosion et lutte anti-erosive dans le bassin versant de l'oued zeroud (tunisie centrale). . . De l'approche exogene a la strategie technico-paysanne." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR10008.
Full textThe oued zeroud watershed incentral tunisia is caracterized by a sensible envivironment subject to natural and anthropic aggressions. The result is a moyhodynamic desequilibrium translated by intense landerosion and high specific degradation. This erosion, which has a bad impact on regional development, is mostly hydric, becoming more and more intense but irregular, discontinous and having complex relation ship with natural and human environmental factors. In most cases? the anthropic parameter is predominant in explaining this erosion crisis. The different attempts to restablish the natural equilibium don't date of today : to anold empiric land conservation has succeeded an essay of centralisation since 1881 on 1972 a new strategy basedon sociological and technical considerations appeared without resolving all the problems the authors tries from a geographical point of view to evaluate all these attempts. He concluds that only a new approach taking in account the farmers in land conservation programs has a chance to succeed. At the end he gives some recommandations as a contribution in the setting up operation of this strategy
Jati, Mohamed. "Le passage Cénomanien-Turonien du continent nord africain (Maroc,Algérie,Tunisie). Comparaison avec le bassin subalpin : apport de la sédimentologie et de la géochimie isotopique." Strasbourg 1, 2007. http://www.theses.fr/2007STR1GE10.
Full textThe analysis of serial sections series across the platform to basin transition in various palaeogeography contexts allowed to determine the sequential context of the Cenomanian-Turonian boundary judged often as transgressif. The sequential heterogeneousness seems to be the rule in the passage on a short interval time, during which show themselves phenomena of oceanic anoxia. The δ13C anomalous characteristic to the Cenomanian-Turonian boundary is interpreted as the result of a global phenomenon which is added a local signature (local tectonics, subsidance). This anomalous can be a tool of correlation with high resolution is within a pond or enters various pond studied. It seems delicate to use the biozons of planctic foraminifera in the absence of all other independent signal (as δ13C) to establish correlations which want in high resolution
Temple-Boyer, Elise. "Aménagement et ménagement du paysage dans la Dorsale Tunisienne : Évolution, représentation et gestion de la conservation des eaux et des sols à l'échelle de trois petits bassins-versants." Phd thesis, Lyon, Ecole normale supérieure, 2006. http://tel.archives-ouvertes.fr/tel-00174543/en/.
Full textL'intérêt n'est pas d'étudier l'érosion en tant que telle, mais les populations face à ces phénomènes. Or, si l'érosion se pose bien à l'échelle régionale, et si les politiques d'aménagement de conservation se conçoivent effectivement à cette échelle, les solutions, elles, ne peuvent être recherchées qu'à l'échelle du paysage, cadre de vie des populations. Est alors analysé le lien entre les perceptions qu'ont les scientifiques et les paysans de ces paysages et de ces milieux, afin de voir si les actions d'aménagements proposées sont susceptibles d'être comprises et reproduites par les habitants.
A travers un réseau de petits bassins-versants, suivi par l'IRD et la DG/ACTA, a été développée une approche paysagère fondée sur la segmentation du paysage. A cette analyse du paysage, s'ajoute une recherche sur la représentation et la perception des milieux par les acteurs locaux et étatiques afin de mieux cerner l'intégration ou non des aménagements dans leur cadre de vie.
Garat, Séverine. "La gestion de l'eau dans une ville romaine d'Afrique : l'exemple de Thugga (Dougga-Tunisie)." Thesis, Bordeaux 3, 2014. http://www.theses.fr/2014BOR30071.
Full textNatural resource as precious and indispensable to contemporary society during ancient times, water is the central topic of this thesis. We decided to address in terms of its management by different levels of power within the Roman Empire but also at individual and private, through the example of the provincial city of Thugga, in Africa Proconsularis, now Tunisia. This issue proposes to focus the resources used by the different levels of responsibilities in order to supply and manage the water needs of an important Roman city of Africa, dedicated to the study of different types of hydraulic structures
Said, Aymen. "Tectonique active de l'Atlas Sud Tunisien : approche structurale et morphotectonique." Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1245/.
Full textThis thesis is a contribution to the determination of the crustal geometry, kinematic history, active tectonics and seismic hazard in the Southern Tunisian Atlas (STA). It is based on the acquisition and analysis of field data (geology, geomorphology and paleoseismology), the interpretation of satellite images, the dating of morphological markers offset by active faults, the seismic interpretation and the construction of balanced cross-sections. The STA is characterized by thin skinned and thick skinned thrust structures and a lateral variation of regional deformation (structural geometry and shortening rate) controlled by NW-SE oblique ramps inherited from borders of a Late Triassic-Early Jurassic rift. The first increments of compressive deformation were recorded in the Turonian-Maastrichtian by a pro parte tectonic inversion of NW-SE and EW normal faults. Compression then has spread back from Serravalian-Tortonian into the STA, where it was manifested by fault propagation folds in the post Triassic sedimentary cover. The major Eocene "Atlas event" described in hinterland domains and in the Eastern Tunisia did not deform significantly the STA, which corresponded probably in this period to the backbulge depozone of the Maghrebides. The Gafsa fault is the longest oblique ramp of the STA structure inherited from the rift. It has a complex geometry with a decoupling between the post-Paleozoic sedimentary cover and the basement above thanks to a Triassic evaporite layer. We show that despite a moderate instrumental and historical seismicity, this fault has produced M = 6 earthquakes with a return period of ca. 500 - 5000 years during the Late Quaternary. The latest large event having produced a surface rupture on the fault occurred around 8000 years BP, suggesting a M = 6 earthquake is overdue on the fault. The fault has a minimum reverse component of slip rate of 0. 21 - 0. 34 mm / yr over the past 50 ka and paleoseismological analysis prove that rare M = 7 paleoearthquakes may be suspected. Such strong earthquakes would require the activation of the buried basement fault and its transient coseismic linkage with the overlying listric fault ramping off the décollement layer. A microseismic study is essential to support this hypothesis. The STA folds are worn by ramps which are expressed by the emerging of active thrusts. These thrusts, whose slip rates are comprised between 0. 05 and 0. 15 mm/year, have the potential to generate M = 6 earthquakes. Two significant thrusts by their size, and therefore by the magnitude that they can produce (Chotts and Métlaoui) should be the subject for detailed complementary studies
Ben, Hassen Aïda. "Données nouvelles sur la matière organique associée aux séries du bassin phosphaté du sud-tunisien (Gisement de Ras-Draâ) et sur la phosphatogenèse." Phd thesis, Université d'Orléans, 2007. http://tel.archives-ouvertes.fr/tel-00293075.
Full textBchir, Azza. "La Tragédie de la performativité : les difficultés de la gestion de l’eau dans le cas du bassin transfrontalier SASS." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLE017.
Full textThe tragedy of the commons poses that when the use of a good is common, that good will tend to be over-used. But what happens when this good is water in a basin on which three countries depend? And what happens when the geopolitical situation makes the possibility of shared inter-state governance unlikely? In this thesis we take the case of the SASS basin, between Tunisia, Algeria and Libya and consider the different possible modes of water governance. In particular, we follow a modality that seemed promising to us, that international experts, from the authority of their technical and economic knowledge, could make adopted the solution that seems the best to them.Thanks to a double ethnographic inquiry, first with a dive in the experts' laboratory, then as close as possible to water management in Tunisian oases, we evaluate the performativity of the experts' model. We notice a certain performativity in modern oases but a lot of resistance in the more traditional ones. This leads us to uncover another tragedy. Even if the model of the experts, which is based on market prices, made it possible to mitigate the tragedy of the commons, it would lead to another tragedy: that of the end of a form of life, a peasant way of life, lived by a large population, forming part of the heritage of humanity. From tragedy to tragedy, only a heuristic of fear, as proposed by H. Jonas, could lead to the common invention of dignified and sustainable solutions for water management
Hachaichi, Zohra. "Quantification de la recharge naturelle et artificielle d'un système aquifère soumis à des contraintes climatiques et anthropiques en zone semi-aride (bassin de Sbiba et Foussana) Tunisie centrale." Thesis, Avignon, 2017. http://www.theses.fr/2017AVIG0053/document.
Full textThe study area lies in the northern part of central Tunisia and extends over about 650 km2. It is located betweenthe rainy Tellian region in the North and the Saharan region in the South. The Foussana Basin is a typical closedinland basin surrounded by high mountains where the precipitation varies over space and time as a result oftopography and seasonality.The main outcrop that marks the watershed of Foussana basin is the quaternary alluvium, which is surrounded byCretaceous reef of deposits covering folds Mountains bounding. The Foussana basin is composed of two aquifers,the PlioQuaternary and the Miocene aquifers. The PlioQuaternary aquifer consists of clayey sand, coarse sand andsandstone deposits. This aquifer is composed of two permeable levels PlioQuaternary Aquifer (PQ1) and PlioceneAquifer (PQ2), which are separated by interbedded sandy marl. The Miocene aquifer consists of sandstone andcoarse sands. This aquifer constitutes an important water source in the study area because of its relativelysignificant thickness and its water quality. It‘s separated to the PlioQuaternary aquifer by a clay layer. The differentaquifers communicate through faults.The groundwater flows occurs from the borders to the center of the basin,i.e. from the surrounding hills to the depression area. The main source of aquifer recharge is infiltration of rainfalland dam water.Groundwater samples with low TDS values, which typically correspond to outcrops of the Miocene aquifer andsome samples of the first PlioQuaternary aquifer PQ1, are typically of SO4-Ca-HCO3-Na water type. In contrast,groundwater samples with high TDS values, most of which were collected in the PlioQuaternary aquifer (PQ1 andPQ2) and groundwater of the Confined Miocene, are typically of SO4-Ca-Na-Mg water type. The main sources ofthe water mineralization in the Foussana basin are the water-rock interaction processes i.e. dissolution ofevaporates and cation-exchange process.The isotopic signatures permit to classify the studied groundwaters into different groups. The PlioQuaternaryaquifer groundwater was classified into two groups. These are the non-evaporated groundwater, which ischaracterized by depleted δ18O and δ2H contents highlighting the importance of modern recharge at higher altitude,and the mixing process with the deep aquifer of the Miocene. The evaporated groundwater that exhibits enrichedstable isotope contents, these enriched values could be related to the evaporation process, which occurs possiblyin the upper part of the unsaturated zone of the PlioQuaternary aquifer (depression area).The Miocene aquifersgroundwaters are classified into two groups. The first group is characterized by relatively depleted isotope contentscorresponding to outcropping Miocene in the border indicating the altitude effect. The second group isdistinguished by relatively depleted contents of stable isotopes corresponding to the confined Miocene reflectinga palaeoclimatic origin. Tritium data permit to identify recent groundwaters originating from a mixture ofcontemporaneous and post-nuclear recharge; and ancient groundwaters deriving from pre-nuclear recharge.Radiocarbon activities decrease from 80 pmc in the recharge area to less than 3 pmc in the confined aquiferproviding ages from present day to 30 000 years BP.In conclusion, a conceptual model has been produced to describe the functioning of the aquifers. The modelling isused as a tool to synthesise the data and the functioning hypothesis. It gives a visualization mean and can put inevidence the aspects, which should be deepened in next works
Guechchati, Noureddine. "Etude par rpe et par irtf de matieres organiques : application a la serie phosphatee de tunisie et a la serie de charbons du sondage de gironville." Orléans, 1987. http://www.theses.fr/1987ORLE2036.
Full textRomero, Sarmiento Maria Fernanda. "Contribution of molecular biomarkers to the knowledge of terrestrial plants development during the Palaeozoic." Thesis, Lille 1, 2010. http://www.theses.fr/2010LIL10041/document.
Full textThe aliphatic and aromatic biomarker content from terrestrial and marine sediments of Late Ordovician to Early Carboniferous age have been related to their palynomorph assemblages (e.g. acritarchs, prasinophytes, chitinozoans, cryptospores, trilete spores and megaspores) in order to contribute to the knowledge of land plant evolution during the Palaeozoic. This investigation is therefore focused on the land-derived biomarkers and their attributions to specific kind of plants. The biomarker record of middle Silurian – lower Devonian sediments from southern Tunisia, Ghadamis Basin (Gondwana) reveals the presence of retene, cadalene, kaurane, norabietane, tetrahydroretene, C19 isohexylalkylnaphthalene and simonellite. The early Palaeozoic bryophytes and tracheophytes (e.g. Cooksonia, lycophytes and zosterophylls) may therefore be considered as potential precursors for retene and its related molecular compounds in sediments of Middle Silurian to Early Devonian age. In contrast, the Early Carboniferous flora formed by arborescent lycopods, sphenopsids and pteridosperms have been suggested here as apossible terrestrial source for phyllocladane, abietane, ent-beyerane, bisnorsimonellite, diaromatic totarane, diaromatic sempervirane and 2-methylretene in the Lower Carboniferous (Viséan) coal deposits at Dunbar (East Lothian, Scotland). Among the other biomarkers detected in our samples, ionene, alkyldibenzofurans, perylene and combustion-derived polycyclic aromatic hydrocarbons (PAHs) indicate pollen, lichens, fungi and vegetation fire contributions, respectively. Most of the biomarkers identified here had been so far generally associated to conifers, though conifers only evolved during Late Carboniferous. Thesecompounds therefore are also characteristic of early land plants
Gharbi, Mohamed. "Etudes des crues et du transport sédimentaire associé - Application au bassin versant de la Medjerda." Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0008/document.
Full textIn Tunisia, the problem of floods and sediment transport is critically arising, especially in the Medjerda watershed. Since the construction of Sidi Salem dam, there is a remarkable morphological change, especially on the downstream side. We note a gradual enhancement of the river bed in the downstream direction and therefore, increased occurrence of floods. So, the use of numerical modeling is needed to better understand this risk. An experimental study carried out in a rectangular inclinable flume at the National Institute of Agronomy of Tunisia (INAT). The aim is to visualize the morphological evolution of the channel bottom consisting of fine sand under permanent flow. In the first part, a comparative analysis was conducted between bed load transport rates models with experimental data, in order to test and validate the new bed load model proposed by Lajeunesse et al. (2010), then to check the grain size effect on the sediment transport capacity. After that, we are interested in the study of the morphological evolution in rivers. It was performed through numerical modeling using SISYPHE coupled with TELEMAC 2D. The aim is to analyze the morphological changes in the channel bottom. In the second part, several simulations have been conducted between 1D and 2D hydraulic models. These simulations concerned the recent floods for which data are available, especially the flood in January 2003 and the latest floods occurred in February 2012. Initially, a 1D hydraulic model using the MIKE 11 and HEC RAS software was performed in order to control the behavior of the water line profile during these floods. Secondly, a twodimensional hydraulic model was conducted using the code TELEMAC 2D in order to determine flood extent and to identify flood sensitive areas. The last part of this work will focus on the study of sediment transport at the Medjerda. Initially, we conducted a one-dimensional modeling (1D) of the total sediment transport along the middle valley of the Medjerda river. An analysis of the influence of the amounts of the materials transported by the Medjerda during flood was performed to determine their effects on the river morphological evolution. Secondly, a two-dimensional modeling was performed (2D) of sediment transport using the code SISYPHE coupled with TELEMAC 2D was also performed. We became interested in the study of sediment transport by thrusting only, to see the effect of this transport mode to the morphological evolution. In addition, we opted for a new approach to calculation of bed load sediment transport model based on the erosion -deposition Charru (2006). At the end of this work, a comparative study between the different results to see the validity of this new approach to the case of Medjerda was considered
Faysse, Nicolas. "L'influence des règles collectives d'allocation de l'eau sur les choix stratégiques des agriculteurs : des petits périmètres irrigués tunisiens aux prélèvements en rivière dans le bassin de l'Adour." Phd thesis, Université de Nanterre - Paris X, 2001. http://tel.archives-ouvertes.fr/tel-00515643.
Full textMlaouhi, Ali. "Climat et érosion par ravinement dans les bassins versants des oueds Maîz et Redjel (Haffouz) Tunisie centrale." Aix-Marseille 1, 2001. http://www.theses.fr/2001AIX10090.
Full textMorschel, Jean. "L'eau et les paysages dans la Dorsale Tunisienne : expliquer le cheminement des flux hydriques en fonction des organisations présentes dans le milieu naturel." Nice, 2006. https://tel.archives-ouvertes.fr/tel-00532885.
Full textSeveral hydrological models are currently in use for predicting floods at the catchment outlet. These vary from lumped rainfall-runoff models which ignore flow processes in the catchment to distributed process-based models which attempt to quantify lateral and vertical fluxes. Few of these models integrate extensive field work and most are based almost entirely on readily available digital data. However flow processes are strongly affected by linear features (paths, roads, hedges. . . ) which are not easily detectable on most digital supports and by factors such as surface roughness or soil depth for which there is often no real data. In the approach described in this Thesis, the catchment was subdivided into landscape segments based on field mapping. These units represent homogeneous morpho-dynamic units that govern vertical and lateral fluxes of water and soil. The Thesis describes the method used for creating the units and landscape segments which will be used for quantifying both runoff and soil erosion
Jedidi-Limayem, Aouicha. "Modélisation de bassins sédimentaires pour l'évaluation du potentiel pétrolier : application au Golfe de Hammamet - Tunisie." Paris 6, 2004. http://www.theses.fr/2004PA066549.
Full textBen, Gsim Abdessafar. "Contribution à l'étude hydrogéologique du bassin versant de l'Oued Ras El Ma (Alas tunisien central)." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37602819g.
Full textKachouri, Mohammed Nejib. "Contribution à l'étude hydrogéologique du bassin de Moulares Redeyef, Sud-ouest tunisien, nappe du Miocène." Bordeaux 3, 1988. http://www.theses.fr/1988BOR30207.
Full textNegra, Lotfi. "Pétrologie, minéralogie et géochimie des minéralisations et des roches encaissantes des bassins associés aux structures tectoniques et magmatiques de l'Oued Belif et du Jebel Haddada (Nord des Nefza, Tunisie septentrionale)." Paris 11, 1987. http://www.theses.fr/1987PA112253.
Full textGalafassi, Diego. "Challenges for an Integrated Water Resource Management in the Merguellil basin (Tunisia)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amslaurea.unibo.it/1571/.
Full textThomas, Myron. "Sedimentology and basin context of the Numidian Flysch Formation; Sicily and Tunisia." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/sedimentology-and-basin-context-of-the-numidian-flysch-formation-sicily-and-tunisia(4b78e06d-f3b5-43da-9d7b-989097470889).html.
Full textContessi, Michela <1985>. "Paleontological studies of Cretaceous vertebrate fossil beds in the Tataouine Basin (southern Tunisia)." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5240/.
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