Bibliografie tematiche / Mediterranean coastal river

Letteratura scientifica selezionata sul tema "Mediterranean coastal river"

Autore: Grafiati

Pubblicato: 8 giugno 2024

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Articoli di riviste sul tema "Mediterranean coastal river":

Herut, B., N. Kress e H. Hornung. "Nutrient pollution at the lower reaches of Mediterranean coastal rivers in Israel". Water Science and Technology 42, n. 1-2 (1 luglio 2000): 147–52. http://dx.doi.org/10.2166/wst.2000.0306.

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This study represents the first attempt to evaluate the nutrient load introduced into the coastal waters by the rivers along the Mediterranean coast of Israel. Measurements of nutrient concentrations (phosphate, ammonium, nitrate, nitrite, silicic acid) at two or three stations along the lower river reaches (11 rivers) were carried out annually from 1990 up to 1998. Combining the nutrient concentrations with the monthly riverine discharges we assessed the nutrient load. In general, most of the coastal rivers contain high nutrient contamination level, compared to the criteria adopted by NOAA (USA) for coastal river estuaries. The high degree of contamination is attributed to extreme low natural flow combined with the discharge of domestic and industrial wastes, and with agriculture runoff. In terms of nutrient concentrations, the Kishon River is the most polluted, followed by the Soreq, Poleg and Alexander Rivers. The preliminary estimate is that the coastal rivers transport between ~2000 to 6000 tons of dissolved inorganic nitrogen (DIN) and between ~250–800 tons of dissolved inorganic phosphorus (DIP) to the sea. An additional 3500 and 3000 tons of DIN and DIP, respectively, are supplied through the Kishon River. The load of the Poleg River is unknown (no discharge data) but expected to be significant based on nutrient concentration measured. The total load of the coastal rivers constitutes a major component among the other land-base point sources such as the Gush Dan outfall. Our estimate probably represents minimal values, as it does not include diffused input of agricultural runoff nor the riverine particulate and dissolved organic nutrient loads (which are unknown).

Higueras, M., P. Kerhervé, A. Sanchez-Vidal, A. Calafat, W. Ludwig, M. Verdoit-Jarraya, S. Heussner e M. Canals. "Biogeochemical characterization of the riverine organic matter transferred to the NW Mediterranean Sea". Biogeosciences Discussions 10, n. 8 (8 agosto 2013): 13277–316. http://dx.doi.org/10.5194/bgd-10-13277-2013.

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Abstract. A large amount of terrestrial organic matter is annually delivered by rivers to the continental shelf, where this material is either buried or transferred to the deep sea by hydrodynamic processes such as storms. The relative amount of terrestrial organic matter in the marine sediments is often determined by analyzing the stable isotopes (δ13C and δ15N) and the C / N ratio of organic matter because the various particulate organic matter (POM) sources have distinct isotopic compositions. With the objective to refine and better interpret POM sources in the marine environment, we have monthly characterized terrestrial POM delivered by eight rivers discharging to the NW Mediterranean Sea: Rhône, Hérault, Orb, Aude, Têt, Fluvià, Ter and Tordera rivers. These rivers were simultaneously sampled from November 2008 to December 2009 and the concentrations of total suspended matter (TSM), particulate organic carbon (POC) and nitrogen (PN), as well as their stable isotopic ratios (δ13C and δ15N) were determined. During the survey, three rainstorm events with winds coming from the E–NE and the S–SE impacted the NW Mediterranean. Depending on the direction of incoming winds, the fluvial response (amount of water discharge and TSM) was different. Rivers draining the Alps (Rhône River) and Central Massif (Hérault, Orb, and Aude rivers) were mostly impacted by rainstorms associated with winds coming from the S–SE, while rivers draining the Pyrenees (Têt, Fluvià, and Ter rivers) and the Montseny Massif (Tordera River) were impacted by rainstorms associated with winds coming from the E–NE. In addition, the spatial evolution of water discharges shows different hydrological regime of the Rhône River, with relatively constant and high water stages and TSM concentrations when compared to coastal rivers, characterized by long periods of low water stages. TSM concentrations are positively correlated to water discharges (high water flows resuspended riverbed sediments) but show an inverse relationship with POC and PN relative contents (mostly due to dilution and by low availability of light in river waters during flood events). TSM in most of the coastal rivers have in average 2.5–3 times higher POC and PN mean contents than the Rhône River (8.5% and 1.5%, respectively for coastal rivers against 3.6% and 0.5%, respectively for the Rhône River). This discrepancy may be caused by the long drought periods in small coastal Mediterranean watersheds that enhance the eutrophication in studied coastal rivers. The δ13C ratios of organic matter reflect also this discrepancy between high and low water stages with values ranging from −33.2‰ to −24.5‰. The enriched 13C values (−26.3 ± 0.4‰ for the Rhône River and −26.9 ± 1.2‰ for coastal rivers), measured during high water stages, express mostly a mixture of terrestrial source (plant remains and soils) whereas depleted 13C values (∼ −30‰) associated with low water stages exhibit a source with predominant freshwater algae. The high δ15N mean values (> 8‰) found in Têt, Ter and Tordera rivers underline the importance of denitrification processes as a consequence of the eutrophication and anthropogenic impact.

Higueras, M., P. Kerhervé, A. Sanchez-Vidal, A. Calafat, W. Ludwig, M. Verdoit-Jarraya, S. Heussner e M. Canals. "Biogeochemical characterization of the riverine particulate organic matter transferred to the NW Mediterranean Sea". Biogeosciences 11, n. 1 (10 gennaio 2014): 157–72. http://dx.doi.org/10.5194/bg-11-157-2014.

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Abstract. A large amount of terrestrial organic matter is annually delivered by rivers to the continental shelf, where this material is either degraded, buried or transferred to the deep sea by hydrodynamic processes such as storms. The relative amount of terrestrial organic matter in the marine sediments is often determined by analysing the stable isotopes (δ13C and δ15N) and the C / N ratio of organic matter because the various particulate organic matter (POM) sources have distinct isotopic compositions. With the objective to refine and better interpret POM sources in the marine environment, we have characterized monthly terrestrial POM delivered by eight rivers discharging to the NW Mediterranean Sea: the Rhône, Hérault, Orb, Aude, Têt, Fluvià, Ter and Tordera rivers. These rivers were simultaneously sampled from November 2008 to December 2009 and the concentrations of total suspended matter (TSM), particulate organic carbon (POC) and nitrogen (PN), as well as their stable isotopic ratios (δ13C and δ15N) were determined. During the survey, three rainstorm events with winds coming from the E–NE and the S–SE impacted the NW Mediterranean. Depending on the direction of incoming winds, the fluvial response (amount of water discharge and TSM) was different. Rivers draining the Alps (Rhône River) and Central Massif (Hérault, Orb, and Aude rivers) were mostly impacted by rainstorms associated with winds coming from the S–SE, while rivers draining the Pyrenees (Têt, Fluvià, and Ter rivers) and the Montseny Massif (Tordera River) were impacted by rainstorms associated with winds coming from the E–NE. In addition, the spatial evolution of water discharges shows a different hydrological regime of the Rhône River, with relatively constant and high water stages and TSM concentrations when compared to coastal rivers, characterized by long periods of low water stages. TSM concentrations are positively correlated to water discharges (high water flows resuspended riverbed sediments) but show an inverse relationship with POC and PN relative contents (mostly due to dilution and by low availability of light in river waters during flood events). TSM in most of the coastal rivers have on average 2.5–3 times higher POC and PN mean contents than the Rhône River (8.5 and 1.5%, respectively, for coastal rivers compared to 3.6 and 0.5%, respectively, for the Rhône River). This discrepancy may be caused by the long drought periods in small coastal Mediterranean watersheds that enhance the eutrophication in studied coastal rivers. The δ13C ratios of organic matter also reflect this discrepancy between high and low water stages with values ranging from −33.2 to −24.5‰. The enriched 13C values (−26.3 ± 0.4‰ for the Rhône River and −26.9 ± 1.2‰ for coastal rivers), measured during high water stages, express mostly a mixture of terrestrial source (plant remains and soils) whereas depleted 13C values (∼ −30‰) associated with low water stages exhibit a source with predominant freshwater algae. The high δ15N mean values (>8‰) found in Têt, Ter and Tordera rivers may underline the importance of denitrification processes as a consequence of the eutrophication and anthropogenic impact.

Salgado-Hernanz, Paula Maria, Aurore Regaudie-de-Gioux, David Antoine e Gotzon Basterretxea. "Pelagic primary production in the coastal Mediterranean Sea: variability, trends, and contribution to basin-scale budgets". Biogeosciences 19, n. 1 (3 gennaio 2022): 47–69. http://dx.doi.org/10.5194/bg-19-47-2022.

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Abstract. We estimated pelagic primary production (PP) in the coastal (<200 m depth) Mediterranean Sea from satellite-borne data, its contribution to basin-scale carbon fixation, its variability, and long-term trends during the period 2002–2016. Annual coastal PP was estimated at 0.041 Gt C, which approximately represents 12 % of total carbon fixation in the Mediterranean Sea. About 51 % of this production occurs in the eastern basin, whereas the western and Adriatic shelves contribute with ∼25 % each of total coastal production. Strong regional variability is revealed in coastal PP, from high-production areas (>300 g C m−2) associated with major river discharges to less productive provinces (<50 g C m−2) located in the southeastern Mediterranean. PP variability in the Mediterranean Sea is dominated by interannual variations, but a notable basin-scale decline (17 %) has been observed since 2012 concurring with a period of increasing sea surface temperatures in the Mediterranean Sea and positive North Atlantic Oscillation and Mediterranean Oscillation climate indices. Long-term trends in PP reveal slight declines in most coastal areas (−0.05 to −0.1 g C m−2 per decade) except in the Adriatic where PP increases at +0.1 g C m−2 per decade. Regionalization of coastal waters based on PP seasonal patterns reveals the importance of river effluents in determining PP in coastal waters that can regionally increase up to 5-fold. Our study provides insight into the contribution of coastal waters to basin-scale carbon balances in the Mediterranean Sea while highlighting the importance of the different temporal and spatial scales of variability.

Herut, B., H. Hornung, N. Kress, M. D. Krom e M. Shirav. "Trace metals in sediments at the lower reaches of Mediterranean coastal rivers, Israel". Water Science and Technology 32, n. 9-10 (1 novembre 1995): 239–46. http://dx.doi.org/10.2166/wst.1995.0690.

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Concentrations of mercury, lead, copper, zinc, cadmium, iron and partially chromium, manganese, nickel and aluminium, were recorded in surface sediments at the lower reaches of 11 rivers from the Mediterranean coastal zone of Israel, during 1988-1993. Excluding the lower Kishon river, no major contamination was found at most of the stations when trace metal concentrations were normalized against iron concentrations (trace metal/iron ratios) and compared to levels recorded in stream sediments from the southern drainage basin of the Kishon river. Minor enrichments found in part of the rivers are attributed to land-based point sources of pollution. Variations in trace metal concentrations at the estuaries are related to high influx of fine-grained sediments transported by heavy floods during rainy winters, which later are resuspended and transported seaward by bottom currents.

Chapapria, Vicent J. de Esteban, J. Javier Diez Gonzalez, Miguel Arenillas Parra e Rafael Cortes Gimeno. "COASTAL PROCESSES IN GUARDAMAR BAY (SPAIN)". Coastal Engineering Proceedings 1, n. 21 (29 gennaio 1988): 99. http://dx.doi.org/10.9753/icce.v21.99.

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The surrounding coastal area of the Segura's River mouth has registered in the last years many erosion problems. It is one of the biggest coastal conjunct in the Spanish mediterranean coast. A whole of studies was carried out to determine littoral and coastal processes in this area.

Houri, Ahmad, e Saadieh W. El Jeblawi. "Water quality assessment of Lebanese coastal rivers during dry season and pollution load into the Mediterranean Sea". Journal of Water and Health 5, n. 4 (1 maggio 2007): 615–23. http://dx.doi.org/10.2166/wh.2007.047.

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The chemical and microbiological properties of Lebanese perennial coastal rivers were studied during the dry season extending from July to September 2004. The results indicate significant levels of pollution in all eight rivers. Although many physical and chemical variables were within WHO guidelines for drinking water, coliform levels were unacceptably high indicating pollution from untreated sewage. The most polluted rivers in most categories were the Abu Ali and Antelias. With the exception of bacterial and phosphate loadings, Awali River provides the highest amount of pollution to the Mediterranean mainly due to its high water flow, although it is one of the least polluted rivers. The urgent need for controlling wastewater dumping into river streams is emphasized. The data obtained should serve as a reference point to assess the efficiency of planned wastewater treatment plants.

Meslard, Florian, Yann Balouin, Nicolas Robin e François Bourrin. "Assessing the Role of Extreme Mediterranean Events on Coastal River Outlet Dynamics". Water 14, n. 16 (9 agosto 2022): 2463. http://dx.doi.org/10.3390/w14162463.

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River mouths are highly dynamic environments responding very rapidly to changes in wave energy or river floods. While the morphological response during floods or during marine storm events has been widely documented in the literature, little is known about the mechanisms acting during the co-occurrence of fluvial and marine hazards. This concomitance of river flood and marine storm is quite common in the western Mediterranean Sea, and was the case for the Gloria event, considered to be the most extreme event in recent decades. During this event, monitoring of hydrodynamics and morphological evolution was implemented, making it possible to better understand the impact of concomitant marine storm and fluvial flood during an extreme meteorological event on spit breaching of a small Mediterranean river mouth. Monitoring using a combination of high-resolution hydrodynamic measurements, topographic and bathymetric surveys, and sediment cores was used before, during, and after the storm “Gloria”. The results suggest an amplification of the morphological impact of the events and a different morphogenic response than if each of the events had acted independently on the system. The marine storm, occurring first, weakened the spit and initiated its breaching, which was continued by the extreme fluvial flood, thus leading to the complete destruction of the mouth. The destruction of the spit acted as a sediment source for subaqueous large delta deposition amounting to 50% of the total volume. The contribution of the river, estimated at 30%, was quite low for an exceptional event, showing the importance of locating rainfall in a catchment area controlled by a dam. For this event, extreme morphological evolution was observed, as well as the importance of water levels in the river mouth, which probably increased flood hazards, demonstrating the importance of including the compounding effect of extreme coastal water levels in river flood risk management.

Cozzi, Stefano, Carles Ibáñez, Luminita Lazar, Patrick Raimbault e Michele Giani. "Flow Regime and Nutrient-Loading Trends from the Largest South European Watersheds: Implications for the Productivity of Mediterranean and Black Sea’s Coastal Areas". Water 11, n. 1 (20 dicembre 2018): 1. http://dx.doi.org/10.3390/w11010001.

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In the last century, large watersheds in Southern Europe have been impacted by a combination of anthropogenic and climatic pressures, which have rapidly evolved to change the ecological status of freshwater and coastal systems. A comparative analysis was performed for Ebro, Rhône, Po and Danube rivers, to investigate if they exhibited differential dynamics in hydrology and water quality that can be linked to specific human and natural forces acting at sub-continental scales. Flow regime series were analyzed from daily to multi-decadal scales, considering frequency distributions, trends (Mann–Kendall and Sen tests) and discontinuities (SRSD Method). River loads of suspended matter, nutrients and organic matter and the eutrophication potential of river nutrients were estimated to assess the impact of river loads on adjacent coastal areas. The decline of freshwater resources largely impacted the Ebro watershed on annual (−0.139 km3 yr−1) and seasonal (−0.4% yr−1) scales. In the other rivers, only spring–summer showed significant decreases of the runoff coupled to an exacerbated flow variability (0.1–0.3% yr−1), which suggested the presence of an enhanced regional climatic instability. Discontinuities in annual runoff series (every 20–30 years) indicated a similar long-term evolution of Rhône and Po rivers, differently from Ebro and Danube. Higher nutrient concentrations in the Ebro and Po (+50%) compared to Rhône and Danube and distinct stoichiometric nutrient ratios may exert specific impacts on the growth of plankton biomass in coastal areas. The overall decline of inorganic phosphorus in the Rhône and Po (since the 1980s) and the Ebro and Danube (since the 1990s) mitigated the eutrophication in coastal ecosystems inducing, however, a phase in which the role of organic phosphorus loads (Po > Danube > Rhône > Ebro) on coastal productivity could be more relevant. Overall, the study showed that the largest South European watersheds are differently impacted by anthropogenic and climatic forces and that this will influence their vulnerability to future changes of flow regime and water quality.

FREYHOF, JÖRG, MÜFIT ÖZULUĞ, CÜNEYT KAYA, ESRA BAYÇELEBI e DAVUT TURAN. "Redescription of Alburnus kotschyi Steindachner, 1863, with comments on Alburnus sellal adanensis Battalgazi, 1944 (Teleostei: Leuciscidae)". Zootaxa 4382, n. 3 (21 febbraio 2018): 573. http://dx.doi.org/10.11646/zootaxa.4382.3.8.

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Alburnus kotschyi is re-described and a neotype is designated. It is found in a small isolated coastal stream at Arsuz at the eastern Mediterranean coast as well as in the Ceyhan and Seyhan River drainages in southern Anatolia. Alburnus adanensis, from the Seyhan River, seems not to have been found again since its first description in 1944 and might be extinct.

Più fonti

Tesi sul tema "Mediterranean coastal river":

Schmidt, Natascha. "Environmental occurrence and fluxes of organic contaminants of emerging concern in the coastal NW Mediterranean sea and the Rhône river". Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0270.

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Les contaminants organiques d'intérêt émergent, tels que les phtalates (PAEs), les esters organophosphorés (OPEs), les bisphénols (BPs), les composés perfluorés (PFCs) et les microplastiques (MPs) sont aujourd'hui largement diffusés dans les milieux aquatiques. Leur présence dans la baie de Marseille, le Rhône et l'Atlantique Nord tropical est examinée dans cette étude. Il est démontré que le Rhône est une source d'apports de MPs et d'additifs plastiques dans le Golfe du Lion (Méditerranée NO) et que les intrusions de ses eaux sont suffisantes pour atteindre des concentrations de PFCs dépassant la norme annuelle moyenne de qualité environnementale dans la baie de Marseille. A Marseille, le zooplancton présent des concentrations de PAEs particulièrement élevées, ce qui soulève des questions sur les conséquences pour le réseau alimentaire marin et les ressources locales. Enfin, la possibilité d'un transport d’OPEs à longue distance est examinée à l'échelle de l'Atlantique Nord tropical
Organic contaminants of emerging concern, such as phthalates (PAEs), organophosphate esters (OPEs), bisphenols (BPs), perfluorinated compounds (PFCs) and microplastics (MPs) are nowadays widely distributed in aquatic environments. Their occurrence in the Bay of Marseille, the Rhône River and the tropical North Atlantic was investigated in this study. The Rhône River is shown to be a source of MP and plastic additive inputs to the Gulf of Lions (NW Mediterranean Sea) and intrusions of its waters are shown to be enough to attain PFC concentrations exceeding the annual average Environmental Quality Standard in the Bay of Marseille. In the Bay of Marseille, zooplankton samples exhibit particularly high PAE concentrations, raising questions concerning the consequences for the marine food web and local marine resources. Finally, the possibility of long-range OPE transport is examined at the scale of the tropical North Atlantic

Morat, Fabien. "Influence des apports rhodaniens sur les traits d'histoires de vie de la sole commune (Solea Solea) : apports de l'analyse structurale et minéralogique des otolithes". Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22126/document.

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La sole commune présente au cours de son cycle de vie un changement ontogénétique d’habitat. Les larves sont marines et pélagiques, les juvéniles sont benthiques et vivent dans les nourriceries côtières (lagunes et estuaires) alors que les adultes sont benthiques et marins en zones plus profondes. Les otolithes sont des concrétions minéralisées de carbonate de calcium de l’oreille interne des téléostéens qui ne subissent ni dissolution ni résorption. Ils enregistrent les caractéristiques chimiques et isotopiques des milieux traversés.L’étude de la croissance, de la composition chimique et isotopique des otolithes des soles des nourriceries a confirmé l’existence de deux stocks de soles dans le golfe du Lion, un à l’Est et l’autre à l’Ouest. Les faibles valeurs de 13C et les fortes valeurs de Ba/Ca des otolithes des soles de l’Est du golfe ont été associées à une forte influence des apports rhodaniens sur la phase de vie larvaire lors des années où le débit du Rhône est normal. En période de crue, une forte influence du fleuve est visible sur les otolithes des soles des nourriceries de l’ensemble du golfe. La croissance des otolithes des juvéniles a été plus élevée lorsque la salinité a été proche de 20 et la température comprise entre 20 et 25°C (période estivale). Les signatures des otolithes de Mauguio et Berre ont présenté des 13C et Sr/Ca plus faibles que ceux de Thau (influences plus marines sur les proies et les masses d’eau). La spécificité des signatures chimiques et isotopiques des otolithes a permis d’élaborer des profils qui ont été retrouvés chez les populations de soles adultes du golfe, mais aussi vers Marseille et Bandol. Ces soles ont montré une influence du Rhône durant la phase de vie larvaire à 53%. Elles ont également montré une forte similarité avec les profils chimiques de type lagune de Thau (10-56%) et Rhône (19-30%) durant leur vie juvénile. Toutefois, une proportion non négligeable de soles originaires de nourriceries non caractérisées (26-50%) a été observée
The life cycle of the common sole shows an ontogenetic shift of habitats. The larvae are marine and pelagic, the juveniles are benthic in coastal nurseries (lagoons and estuaries) whereas adults are benthic and live in marine deeper areas. Otoliths are paired calcified structures from the inner ear of teletost fish. They are metabolically inert (neither resorption nor dissolution) and they record, both the age (daily and annual increments) and the chemical and isotopic characteristics of the environment inhabited. Otoliths study provides information on the life history traits of individuals.The study of growth, chemical and isotopic otolith composition of soles from nurseries confirmed the existence of two sole stocks in the Gulf of Lions, one in the Eastern part and the other in the Western part. Low values in 13C and higher values in Ba/Ca ratio measured in Eastern sole otoliths during the larval life were associated to a high influence of the Rhône River discharge during a normal flow rate periods. Conversely, the one hundred return flood of the 2nd of December 2003 was very high and visible on otoliths from all nurseries in the Gulf of Lions. Juvenile otolith growth was higher in nurseries with low salinity (~20) and temperatures between 20 and 25°C than in more marine nurseries. 13C and Sr/Ca ratios of otoliths from Berre and Mauguio coastal lagoons were lower than those observed in Thau coastal lagoon (more marine influences on preys and water masses). These specificities of otolith compositions were used for the elaboration of reference profiles, which have been identified in adult populations of the Gulf of Lions, Marseilles and Bandol. Adult have shown an influence of the Rhône River during their larval life at 53%. They have shown a similarity with Thau chemical profile (10-56%) and Rhône profile (19-30%) during their juvenile life. However, 26-50% of fish from uncharacterised nurseries have been observed

Quinquis, Michel. "Relations entre bassins versants et cellules sédimentaires littorales : les exemples du Maroc, de l'Algérie et de la Tunisie". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0330/document.

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Dans cette étude menée sur la côte méditerranéenne du Maroc, de l’Algérie, et de la Tunisie à une échelle spatiale et temporelle étendue (2200 km de côte et sur 100 ans environ), nous déterminons, par une approche « Source-to-sink », les relations existantes entre l’érosion produite dans les bassins versants et les sédiments transportés en suspension par les oueds, avec la redistribution de ces sédiments le long du rivage. Nous proposons un nouveau modèle empirique de transport sédimentaire en suspension le long des bassins versants de notre site d’étude. Nous déterminons alors l’impact des barrages sur les sédiments, puis nous estimons quantitativement quels sont les apports sédimentaires s’effectuant jusqu’à la mer. Nous analysons les caractéristiques morphologiques du littoral selon sa géométrie et les indices morphodynamiques issus de la littérature. Après avoir cartographié la position du trait de côte à différentes périodes, la cinématique du rivage est déterminée, ainsi que la dérive littorale. Ces analyses se basent sur le concept de cellule littorale. Nous terminons par une synthèse globale avant de tirer les conclusions principales sur les relations entre les bassins versants et les cellules littorales, telles que (1) le rôle de précurseur et de tampon sédimentaire joué par les deltas pour limiter l’érosion des plages en secteur aval de la cellule littorale, (2) les liens entre les apports sédimentaires des oueds avant-barrage avec le type de barre littorale, et (3) les liens entre les apports sédimentaires des oueds avant-barrage, minorés du volume de sédiment déplacé par la dérive littorale, avec la taille des deltas et le nombre de barres littorales
In this study conducted on the Mediterranean coast of Morocco, Algeria, and Tunisia at an extended spatial and temporal scale (2200 km of coastline and about 100 years), we determine, using a "source-to- sink ", the existing relationships between erosion produced in watersheds and sediment transported in suspension by wadis, with the redistribution of these sediments along the shoreline. We propose a new empirical model of suspended sediment transport along the watersheds of our study site. We then determine the impact of dams on the sediments, and then quantitatively estimate the sedimentary contributions to the sea. We analyze the morphological characteristics of the littoral according to its geometry and the morphodynamic indices from the literature . After mapping the position of the coastline at different periods, the kinematics of the shoreline is determined, as well as the shoreline drift. These analyzes are based on the concept of a littoral cell. We conclude with a general synthesis before drawing the main conclusions on the relations between watersheds and coastal cells, such as (1) the role of precursor and sediment buffer played by deltas to limit the erosion of beaches in the sector (3) the links between sediment inputs from pre-barrage wadis, minus the volume of sediment moved by the coastal drift, with the size of the deltas and the number of coastal bars

Ghsoub, Myriam. "Dynamique des masses d'eaux côtières libanaises soumises à l'impact d'un fleuve". Thesis, Perpignan, 2019. http://www.theses.fr/2019PERP0026.

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Le but principal de cette étude est de comprendre le fonctionnement de la zone interface, continuum terre-mer au Liban. Suite à l’anthropisation spécifiquement la construction des barrages, les apports du fleuve vers la mer en termes de quantité et qualité, sont modifiés de nos jours. Le fleuve Ibrahim, ayant le débit le plus important parmi les fleuves libanais, interrompu par trois barrages, a été choisi comme étude de cas représentant les fleuves côtiers libanais. Les différents paramètres retenus ont permis de dégager des résultats intéressants. Au niveau de l’eau de surface marine le panache fluvial est décelé par l’étude des paramètres hydrologiques des masses d’eaux superficielles. Les résultats montrent aussi que l’apport fluviatile est le contributeur principal en nutriments au niveau de la région côtière durant la saison humide, élucidé par les teneurs en nitrates et silice dissoute. D’autre part, le transfert des particules de la zone côtière vers le large, à travers la pente continentale, se fait par l’intermédiaire de couches néphéloïdes.L’origine des sédiments et de leurs constituants est mise en relief en analysant plusieurs paramètres sédimentaires. La combinaison des paramètres granulométriques et géochimiques organiques et inorganiques et l’application des tests statistiques a permis de distinguer entre deux environnements de dépôt. (1) Les environnements littoraux (≤ 30 m) ou zone de « bypass » où le sable fin et la matière organique autochtone dominent. (2) Les environnements profonds (≥ 60 m) ou zones de dépôts où la fraction fine et la matière organique allochtone dominent.Sur l’ensemble du suivi l’état chimique de l’eau du fleuve au niveau des deux stations échantillonnées, déduit des teneurs en nutriments et macrofaune benthique, est considéré comme bon à très bon d’après les normes internationales Finalement, l’analyse des éléments traces métalliques confirme la faible contribution anthropique dans les stations marines et fluviatiles échantillonnées malgré la densité de population croissante au niveau de la région côtière Libanaise
The main purpose of this study is to understand the functioning of the coastal zone, land-sea continuum in Lebanon. Following the construction of dams, the contributions of the river towards the sea in terms of quantity and quality, are modified nowadays. The Ibrahim river, having the highest flow among the Lebanese rivers, interrupted by three dams, was chosen as a case study representing the Lebanese coastal rivers. The various parameters retained made it possible to obtain interesting results. At sea surface water level, the river plume is detected by studying the hydrological parameters of surface water.The results also show that the river is the main nutrient contributor in the coastal region during the wet season, elucidated by the nitrate and dissolved silica contents. On the other hand, the transfer of particles from the coastal zone to the open sea, across the continental slope, takes place through the nepheloid layers.The origin of sediments and their constituents is highlighted by analyzing several sediment parameters. The combination of organic and inorganic particle size and geochemical parameters and the application of statistical tests made it possible to distinguish between two deposition environments. (1) Coastal environments (≤ 30 m) or “bypass” area where fine sand and autochtonous organic matter dominate. (2) Deep environments (≥ 60 m) or deposit areas where the fine fraction and allochthonous organic matter dominate.The ecological state of the river water at the two sampled stations, deduced from the contents of nutrients and benthic macrofauna, is considered good to very good according to international standards. Finally, the analysis of metallic trace elements confirms the low anthropogenic contribution in the marine and river stations despite the increasing density of the population in the Lebanese coastal region

Libri sul tema "Mediterranean coastal river":

Scapini, Felicita, a cura di. The Mediterranean coastal areas from watershed to the sea: interactions and changes. Florence: Firenze University Press, 2007. http://dx.doi.org/10.36253/978-88-8453-557-3.

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This volume presents the Proceedings of the International Conference of the MEDCORE project held in Florence, Italy, in November 2005. The MEDCORE project "From river catchment areas to the sea: a comparative and integrated approach to the ecology of Mediterranean coastal zones for sustainable management", funded by the European Commission, was carried out from 2002 to 2005 by a consortium of researchers from European and Mediterranean partner countries. It focused on coastal areas, with particular attention to the interactions and links between the elements. The approach was characterised by multidisciplinary research and integration of expertise. This book contributes to the information flow originated by the project and the conference. Despite the variety of the contributions, they have been gathered into this single volume to construct a baseline for an innovative interdisciplinary perspective.

Stolfa, M. L. Zucchi. Stagni costieri del Mediterraneo: Area di delta del F. Tagliamento (Adriatico settentrionale) = Ponds on the Mediterranean coasts : river Tagliamento delta area (northern Adriatic Sea). [Udine?: s.n., 1985.

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Shipley, Graham, a cura di. Pseudo-Skylax's Periplous. Liverpool University Press, 2020. http://dx.doi.org/10.3828/liverpool/9781789620917.001.0001.

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The text of the Periplous or ‘circumnavigation’ that survives under the name of Skylax of Karyanda is in fact by an unknown author of the 4th century BC. It describes the coasts of the Mediterranean and Black Sea, naming hundreds of towns with geographical features such as rivers, harbours and mountains. But, argues Graham Shipley, it is not the record of a voyage or a navigational handbook for sailors. It is, rather, the first work of Greek theoretical geography, written in Athens at a time of intellectual ferment and intense speculation about the nature and dimensions of the inhabited world. While other scientists were gathering data about natural science and political systems or making rapid advances in philosophy, rhetorical theory, and cosmology, the unknown author collected data about the structure of the lands bordering the seas known to the Greeks, and compiled sailing distances and times along well-frequented routes. His aim was probably nothing less ambitious than to demonstrate the size of the inhabited world of the Greeks. This is the first full edition of the Periplous for over 150 years, and includes a newly revised Greek text and specially produced maps along with the first complete English translation. In this fully reset second edition, the introduction is expanded to include a section on the late-antique geographer Markianos, and updates incorporated into both the Introduction and Commentary.

Capitoli di libri sul tema "Mediterranean coastal river":

Anthony, Edward. "Impacted fluvial and coastal sediment connectivity in the Mediterranean: a brief review and implications in the context of global environmental change". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 5–15. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.01.

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Sediment deficits on Mediterranean coasts have resulted from anthropogenic fragmentation of rivers and loss of sediment flux connectivity caused by dams, river engineering, and aggregate extraction. Coastal sediment transport cells are now characterized by artificial boundaries that impair alongshore sediment connectivity. Climate change and sea-level rise will cause further vulnerability of the Mediterranean’s fragmented rivers and coasts and there is, therefore, an urgent need to foster efforts aimed at re-establishing fluvial and alongshore sediment connectivity

Giordano, Laura, Francesco Paolo Buonocunto, Luciana Ferraro, Alfonsa Milia e Matilda Mali. "The environmental function analysis: a promising tool to evaluate the coastal zone conservation potential". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 234–43. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.21.

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This study reports and compares the application and usefulness of the Environmental Function Analysis to discover the potential for conservation of two very different coastal areas located along the Campania Region (Southern Italy). The first EFA site is located in the Volturno River Coastal Zone (southern Tyrrhenian sea) while the second EFA study site is located at the western end of the Sorrento Peninsula in the Bay of Naples. Results demonstrated that EFA permits to effectively synthetize the information on coastal system functioning and on their potential for conservation or development.

Bisci, Carlo, Gino Cantalamessa, Simona Casavecchia, Mario Tramontana e Federico Spagnoli. "Coastal dunes along the Marche littoral (Adriatic side of central Italy)". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 132–45. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.12.

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An analysis of the main features of relict dunes and scarcely anthropized zones located along the littoral of the Marche Region is reported. The coast is strongly affected by man-made transformations mostly implemented from the ‘60s of the previous century to face beach erosion triggered by a reduction of river solid load derived from man-made interventions in the hydrographic basins. Presently, no real beach-dune still exists, but, locally, some eroded remnants can be found. The typical vegetation of dunes is very fragmented, depleted and strongly altered. Standing their extremely relevant ecologic function, it is instrumental to carry out actions aiming at preserving these relic dunal areas.

Casu, Alessandra, e Jlenia Zaccagna. "New Features of the rivershore: climate change and new relations between town and water". In Proceedings e report, 174–82. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.18.

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Climate scenarios show that Mediterranean areas will be affected by torrential patterns of rain, that can cause difficulties in urban life in coastal areas, mainly due to the draining systems and to the sea-level. Lisbon is on the estuary of Tagus river, which would be probably affected by run-off and by the forecasted rising sea-level. Redesigning its relationship with water, trying to make this urban area more resilient, becomes crucial and asks to study run-off and sea-level rise for 2100 and for intermediate steps, to adapt the urban life and its spaces to the occurring scenarios.

Milia, Alfonsa, Francesco Paolo Buonocunto, Antonella Di Leo, Luciana Ferraro, Santina Giandomenico, Laura Giordano e Matilda Mali. "Grain size, nutrients and heavy metals analysis to evaluate natural vs anthropogenic sources in the sea environment (Naples Bay, Eastern Tyrrhenian Sea)". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 535–44. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.49.

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Naples Bay is affected by metal contamination of geogenic and anthropogenic nature. The grain size, organic matter, nutrients, and metal content of the seafloor sediments were analysed through a statistical approach, and a comparison was made with data ashore. The results identified four zones: one contaminated by volcanic rocks; a second and third zone contaminated by anthropogenic inputs; and a fourth distal zone with a low contamination rate. The results show that the river should be considered as a major source of anthropogenic contamination.

Pellettieri, Antonella. "…in finibus Lucaniae. Historical cartography of the Tyrrhenian coast and demographic fluctuations". In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 855–64. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.81.

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The towns of Calabria Tortora, Aieta and Praia a mare with the Dino island and Fiuzzi gravitated towards Castrocucco and Maratea . Although divided by the Noce river they are in finibus Lucaniae they seem to belong to the same conformation as Castrocucco with vast coasts and beaches of very large dimensions. With the twentieth century and the mass tourism of the 60s, Aieta and Tortora begin a slow process of depopulation that leads to the birth of settlements towards the sea with Tortora marina and Praia a mare which had already become an autonomous municipality in 1928.

Bulkan, Özlem, Burak Yalamaz e M. Namık Cagatay. "A sedimentological pattern of a coastal transitional environment: from the Eastern Mediterranean Sea shoreline through the Lake Bafa". In Proceedings e report, 385–91. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.38.

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This study represents the lithological correlation of multi-cores taken from the various parts of the current Lake Bafa basin, BAF35, - 37 - 39 - 41, - 42, - 46. Concerning the main depositional characteristics, we reconstructed fundamental characteristics of local abrupt and gradual environmental fluctuations. The gradual changes reflect four main environmental phases are lacustrine stage (last 0.8 ky), lagoon stage (0.8–1.75 ky BP), marine-river interaction stage (1.75–2.7 ky BP) and the earliest marine-dominated stage (>2.7 ky BP).

Mahe, Gil, Oula Amrouni, Thouraya Ben Moussa, Laurent Dezileau, Rajae El Aoula, Hamadi Habaieb, Abderraouf Hzami et al. "Assessment of the Impact of Dams on River Regimes, Sediment Transports to the Sea, and Coastal Changes". In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions, 31–32. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70548-4_12.

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Billal, Zenati, Inal Ahmed, Kourdali Sidali, Mesbaiah Fatma-Zohra, Meknachi Abdellah e Bachouche Samir. "Characterization and Dynamics of the Pollutant Load Discharge Carried by the Mazafran River (N Algeria) on the Coastal Environment". In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition), 2117–22. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-51210-1_331.

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Benmoussa, Thouraya, Oula Amrouni, Abderraouf Hzami, Laurent Dezileau, Gil Mahe e Saâdi Abdeljaouad. "Human Impact on the Morpho-Sedimentary Evolution on the Coastal Deltaic Zones (Case of Application: Artificial Canal of Medjerda River, Tunisa)". In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions, 1701–3. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70548-4_495.

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Atti di convegni sul tema "Mediterranean coastal river":

BALOUIN, YANN, ERIC PALVADEAU e FRANCOIS BOURRIN. "SEDIMENT BYPASSING MECHANISMS AT RIVER MOUTHS: EXAMPLES IN THE MEDITERRANEAN". In International Conference on Coastal Sediments 2019. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789811204487_0248.

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ANTHONY, Edward J. "The increasing vulnerability of river deltas in the Mediterranean". In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.054.

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GALESIC, Morena, Roko ANDRICEVIC e Vladimir DIVIC. "Integrated concentration statistics from river generated pollution in coastal zones". In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2017. http://dx.doi.org/10.5150/cmcm.2017.024.

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CAPPUCCI, Sergio, Iolanda LISI, Paolo CIAVOLA e Lorenzo ROSSI. "Sediment delivery at sea by the Magra River, Northern Italy". In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.006.

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CUKROV, Nuša, Cédric GARNIER, Duc Huy DANG, Ana-Marija CINDRIĆ, Dario OMANOVIĆ e Neven CUKROV. "Spatial distribution and mobility of trace metals in sediments of the Krka River estuary (Adriatic Sea, Croatia)". In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2017. http://dx.doi.org/10.5150/cmcm.2017.020.

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PAĐAN, Jasmin, Nuša CUKROV, Ana-Marija CINDRIĆ, Marija MARGUŠ, Neven CUKROV, Cedric GARNIER e Dario OMANOVIĆ. "Relating nautical traffic and copper concentration in coastal waters: a case-study in the Krka River estuary (Croatia)". In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2017. http://dx.doi.org/10.5150/cmcm.2017.031.

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Perojević, Snježana, e Branislav Trifunović. "The Aquila tower: a part of the Renaissance coastal defence system of Pučišća". In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11423.

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At the end of the fifteenth century the Ottoman Empire won the land at the middle of the eastern side of the Adriatic, between the town of Omiš and the Neretva River. Thus exposing the northern settlements of the island of Brač, which were under the Venetian Administration at the time, to immediate danger from the Turkish invasion. The settlement of Pučišća was particularly vulnerable. Therefore, the settlement was intensively fortified, and a series of thirteen individual small coastal towers was built, after which the entire settlement was named Castello Pucischia in 1600. One of these towers –the Aquila tower– had a key role in defending Pučišća during the Ottoman-Venetian War, also known as the War of Cyprus (1570-1573). The Aquila tower was built at the beginning of the sixteenth century and today it is a well-preserved detached building situated on the Pučišća coast. Despite all the damage and transformations endured in the past, all the tower elements have been sufficiently preserved to reconstruct its original appearance, including the residential character of the overall interior: a stone wardrobe and a built-in stone basin (Cro. pilo), a fireplace, stairs, as well as those of a defensive character: mechanisms for lifting the drawbridge, loopholes, cannon openings, channels for extracting gunpowder smoke. The wooden beams’ supports in the walls above the first floor have also been preserved, as well as the barrel vault over the ground floor and the groin vault over the second floor which are still intact even today. On the external of the tower, the original corbels of machicolations as well as the semi-circular cornice above the escarp are partially preserved. By analysing the remains of the tower and by studying historical and bibliographic sources, a reconstruction of the original appearance of the Aquila tower has been made, both for the external and internal part, including transformations that took place over the time, since its construction to the present day. This has contributed to the knowledge of the typology of Renaissance coastal fortifications as well as to providing basis for potential renovation and reconstruction of the Aquila tower.

Calvo Serrano, Julio, Carlos Malagón Luesma, Jorge Bezares Batista, Jesús Rodríguez Bulnes e Adelaida Martín Martín. "La Torre de Martil, Tetuán, Marruecos". In FORTMED2024 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2024. http://dx.doi.org/10.4995/fortmed2024.2024.17910.

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Tetuan, located on the slopes of Mount Dersa, on the banks of the Martil (Martin) River, did not assume an important urban role until after the fall of Ceuta, located 60 km away, sometimes in the hands of Castilian troops and others of the Portuguese. Its location 10 km from the sea, avoided any maritime attack but, through shallow draft boats, the Martil River, made communication with the Mediterranean possible, assuming the function of naval base of the kingdom of Fez in the Strait. Historically, the economy of Tetuan was constituted by the tributes received in the name of the sultan among the tribes of the district, maritime trade with other ports of Barbary, and above all the product of privateering, ransoms of Christian captives and slave trade. The latter led to the development of simple port infrastructures at the mouth of the Martil River, as well as to the growth of a small coastal settlement. It would be at the beginning of the 18th century when privateering activity definitively gave way to maritime trade with the peninsula and British settlements in the Mediterranean. It was under the mandate of Caid Ahmad al-Riffi in 1720 when construction took place at its mouth, of Martil Tower. It is an artillery tower without passage holes at ground level, which can be accessed by a portable staircase to the first floor and is crowned by three watchtowers and a turret. This work aims to lay the foundations for its rehabilitation. The working methodology is based on photogrammetric plans as a basis for functional and constructive analysis, its materials, and a mapping of its most significant lesions, as well as an important search for information, especially graphic, that allows establishing its original state and its evolution over time.

Kurchukov, K. V., V. G. Platonov, E. Yu Katunin e A. A. Kuznetsov. "Experimental and Numerical Investigation of Seakeeping Performance for Sea-River Ships With Different Hull Fullness". In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24458.

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Commercial vessels under 5000 dwt, specifically sea-river vessels, constitute a substantial part of the world’s merchant fleet. These vessels are as a rule running between sea, estuary and river ports. Mostly these vessels are restricted in operation by areas, seasons, distance from port of refuge, wind and wave conditions. In this connection the operational safety of such vessels, which are mainly engaged in carriage of oil products, is a critical issue. This paper addresses integrated studies on seakeeping of sea-river vessels starting from the early design stage with preliminary CFD estimates and model experiments in wave basin up to the operational sea trials. The wave conditions for analytical and experimental studies are chosen to be as close as possible to the specific ship profile and expected area of operation. Some conclusions regarding the effect of block coefficient on seakeeping performance of sea-river vessels are made, estimations and experimental data are compared for a ship with extremely large block coefficient and wider operation area (beyond coastal waters), as well as seakeeping performance data recorded at sea during operational voyage of the vessel on the Black sea and Mediterranean sea are given.

Sulis, Andrea, Andrea Carboni e Silvia Serreli. "Global Trends in Wave Height in Western Mediterranean Sea". In 40th IAHR World Congress - "Rivers � Connecting Mountains and Coasts". Spain: The International Association for Hydro-Environment Engineering and Research (IAHR), 2013. http://dx.doi.org/10.3850/978-90-833476-1-5_iahr40wc-p1046-cd.

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