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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Nutrient cycling in agroecosystems 2 (1981), S. 289-302 
    ISSN: 1573-0867
    Schlagwort(e): trace elements ; fertilizers analysis ; atomic absorption spectrophotometry ; potential soil contamination ; toxicity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Beschreibung / Inhaltsverzeichnis: Résumé Un certain nombre de fertilisants commerciaux, minéraux et synthétique ont été analysés pour en déterminer les contenus de As, Bi, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Sn et Zn par spectrophotometrie d'absorption atomique et les apports au terrain ont été calculés. Tous les éléments considérés étaient présents dans chaque échantillon examiné avec des exceptions (surtout pour le Bi). Les contenus les plus élevés ont été observés dans les fertilisants phosphatiques, suivis de ceux dans la préparation desquels entrent des roches calcaires; les fertilisants azotés synthétiques et les échantillons de sulfate potassique contenaient les quantités moins élevées d'élément-trace, bien que avec des exceptions significative. Les contributions de As, Cd, Hg, Sn et Mo apportées par la plupart des échantillons examinés pourraient influencer remarquablement les contenus moyens du terrain; les adjonctions de Co, Cr, Cu, Ni, Pb et Zn par les fertilisants phosphatiques devraient influencer uniquement des terrains à basses quantités naturelles de ces éléments; tandis que les adjonctions de Bi semblaient etre en tout cas les moins significatives.
    Notizen: Abstract A number of mineral and synthetic commercial fertilizers of different origin were analysed for their contents of As, Bi, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Sn and Zn by atomic absorption spectrophotometry and contributions to soil were calculated. All investigated elements were detectable in each examined sample, with few exceptions (mainly for Bi). The highest element contents were found in fertilizers containing phosphates, followed by those ones involving carbonate rocks in their processing. Synthetic nitrogen fertilizers and potassium sulphate samples showed the lowest amounts of trace elements with some significative exceptions. Supplies of As, Cd, Hg, Sn and Mo by almost all examined samples could influence significantly the average soil contents; Co, Cr, Cu, Ni, Pb and Zn additions by phosphate fertilizers should affect only soils with low natural levels; Bi contributions appeared to be the least significative.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Plant and soil 69 (1982), S. 57-66 
    ISSN: 1573-5036
    Schlagwort(e): Italy ; Minor elements ; Pollution ; Regression model
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary A number of soil samples from south-east Italy were analyzed for As, Bi, Cd, Cu, Hg, Li, Mn, Ni, Pb, Se, Sn, and Zn contents with the aim of estimating pollution degree in cultivated lands of region. The existence of linear relations among variables was detected assuming multiple regression models and analyzing then linear correlation coefficients.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    ISSN: 1573-5036
    Schlagwort(e): Organic matter ; IR spectroscopy ; 1H NMR spectroscopy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Infrared and proton resonance spectra have been used to characterize fraction extracted sequentially from humic and fulvic acids by diethylether, acetone, dioxane, tetrahydrofuran, pyridine and dimethylformamide. The results showed that the same solvents extracted structurally similar components from both humic and fulvic acids. On the other hand, the spectra showed solvent-dependent differences, some being characteristic for a preponderance of aliphatic structures, others for aromatic structures.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Plant and soil 63 (1981), S. 369-375 
    ISSN: 1573-5036
    Schlagwort(e): Enzymes ; Enzyme activity ; Glutamic-dehydrogenase ; Inhibition ; Pesticides ; Phenoxyacilic acids
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Experiments were carried out on the effects of some phenoxyacilic acids, used as herbicides, on the glutamic-dehydrogenase (GLDH) activity. 2,4-D,2,4,5-T, MCPA and Dichlorprop inhibited GLDH activity in a competitive way. Phenoxyacilic acids were ranked in the following order of affinity for the enzyme on the basis of the values of the inhibition constants: 2,4,5-T〉2,4-D〉MCPA〉Dichlorprop; on the basis of chemical structure, it was established that the carboxyl dissociation degree is instrumental in linking the herbicide with the active site of the enzyme.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Nutrient cycling in agroecosystems 4 (1983), S. 135-144 
    ISSN: 1573-0867
    Schlagwort(e): barium ; rubidium ; strontium ; trace elements ; fertilizers analysis ; atomic absorption spectrophotometry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract From various manufacturers and distributors 48 fertilizer samples were collected and analyzed for contents of barium, rubidium and strontium by atomic absorption spectrophotometry. The investigated elements are almost always detectable in appreciable amounts in straight and compound fertilizers originated from natural rocks and salt deposits; whereas synthetic nitrogen fertilizers contain in every case low amounts of rubidium, no barium and appreciable quantities of strontium only in some cases. Potassium sulphate fertilizers appear to be the major source of rubidium and superphosphate and calciumcyanamide the source of barium, whilst the three of them supplied sensible amounts of strontium to fertilized soil to affect its average total content to a various degree.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Bulletin of engineering geology and the environment 57 (1999), S. 253-261 
    ISSN: 1435-9537
    Schlagwort(e): Key words waste dump ; ground water ; numerical simulation ; Mots clés stockage de déchets ; eaux souterraines ; simulation numérique
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Beschreibung / Inhaltsverzeichnis: Résumé La possibilité d'utiliser une carrière d'argile abandonnée comme terrain de décharge de déchets sidérurgiques a été soigneusement évaluée en vue de sauvegarder les ressources en eaux souterraines du site. L'eau de la nappe phréatique est de qualité médiocre. Son aquifère est constitué par une formation de calcarénite, son mur par des argiles ayant fait l'objet d'exploitations. Au-dessous, une couche de calcarénite repose transgressivement sur la plateforme carbonatée des Pouilles. Les roches carbonatées de cet aquifère profond renferment une nappe qui s'écoule jusqu'à la Mer Ionienne. Un diaphragme plastique, étanche à l'eau et inerte aux produits de percolation a été réalisé pour protéger les eaux souterraines contre les risques de pollution par les déchets industriels de la décharge. Le dispositif a été conçu suite à une évaluation soignée des impacts possibles sur les eaux souterraines. Le terrain de décharge est, de plus, situé près d'établissements industriels dont les fondations sont au niveau de la nappe phréatique. Ces fondations et des tranchées ferroviaires influent grandement sur la circulation de l'eau souterraine. Enfin, des techniques de calcul numérique appliquéà l'hydrogéologie ont permis d'estimer l'impact d'une tranchée de drainage sur la circulation des eaux souterraines ainsi que l'influence de cette tranchée sur les ouvrages et établissements industriels présents sur le site.
    Notizen: Abstract  The use of a deserted clay quarry to collect iron manufacturing-derived special wastes has been carefully assessed with a view to protecting ground water resources. The shallower ground water is of low quantity and poor quality. It is encompassed by a calcarenite aquifer, the bottom of which consists of clays. A limited calcarenite layer is found below, transgressively lying over the main Apulian carbonate shelf. The aquifer carbonate rocks enclose large ground water resources which ultimately flows into the Ionian Sea. A plastic waterproof diaphragm inert to percolation products has been installed to protect ground water against pollution hazards resulting from the disposal of industrial wastes. The dump is actually located in the vicinity of major industrial plants, the basements of which corresponds to the shallow aquifer. Both the basements and the railway cuttings greatly affect the ground water flow. Hydrogeological applied numerical calculation techniques have been used to evaluate the impact of a drainage trench on the ground water flow together with any noticeable influence of the latter on construction works and industrial plants in place.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Publikationsdatum: 2020-10-29
    Beschreibung: In the present work, for a study area located in the southernmost province of continental Italy, data concerning the historical series of floods which have occurred since XVII century have been collected. Damages caused by flood events were discussed together with rainfall regime and trend (for the period in which data are available) and with main modifications due to variations in population number. The aim was to assess if the frequency of damaging floods is changing and if there is a role of rainfall and/or of anthropic modifications of land use on these changes. 150 damaging floods were analysed; 4% of the total were floods which caused damages to people, and which mainly occurred in the past centuries. Notwithstanding, the trend of damaging floods is increasing due to the effects of floods observed in the last decades. At the same time, the rainfall trend is generally decreasing, as observed at regional scale, and not significant to justify the flood recurrence increase. The population trend is characterised by a huge increase observed in the last decades. On this basis, the progressive urban enlargement, realised careless of both drainage network characteristics and extreme floods, can be considered as the main source of increasing risks due to damaging floods.
    Beschreibung: Published
    Beschreibung: 103-110
    Beschreibung: restricted
    Schlagwort(e): floods ; historical research, ; rainfall trend ; land use ; Calabria ; Italy ; 05. General::05.08. Risk::05.08.02. Hydrogeological risk
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: book chapter
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Publikationsdatum: 2020-10-29
    Beschreibung: A period of bad weather conditions due to prolonged intense rainfall and strong winds can trigger landslides, floods, secondary floods (accumulation of rain on surfaces with low permeability), and sea storms, causing damage to humans and infrastructure. As a whole, these periods of bad weather and triggered phenomena can be defined as damaging hydrogeological events (DHEs). We define a methodological approach based on seven simple indexes to analyze such events. The indexes describe the return period (T) and trend of rainfall, the extent of hit areas, and the level of damages; they can be considered attributes of georeferenced features and analyzed with GIS techniques. We tested our method in an Italian region frequently hit by DHEs. In a period of 10 years, 747 damaging phenomena (landslides, 43%; floods, 38%) and 94 DHEs have been classified. The road network and housing areas are the most frequently damaged elements, threatened by all types of damaging phenomena. T classes are almost in accordance with the level of damage. These results can be used to outline warning levels for civil protection purposes, to forecast the areas most likely to be hit and the potential ensuing damage, to disseminate information concerning vulnerable areas, and to increase people’s awareness of risk
    Beschreibung: Published
    Beschreibung: 483-495
    Beschreibung: 1VV. Altro
    Beschreibung: N/A or not JCR
    Beschreibung: open
    Schlagwort(e): Rainfall ; Landslide ; Secondary flood ; Damage ; Southern Italy ; 05. General::05.08. Risk::05.08.02. Hydrogeological risk
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Publikationsdatum: 2021-01-11
    Beschreibung: The increasing overexploitation of water resources is observed on a global scale in the previous decades; this trend involves the coastal regions of Mediterranean Basin (Van Beynen et alii, 2012). As an effect of increasing groundwater discharge from coastal aquifers, the phenomenon of seawater intrusion is becoming a serious problem for most of the coastal aquifers, especially in the Mediterranean area (COST, 2003; COST, 2005). The aim of this paper is to present the modeling of a coastal porous aquifer located in the complex plain of Sibari (Southern Italy), a plain deeply modified as an effect of reclamation works realized after thirties. The model was implemented using piezometric historical data (from thirties) to establish the effect of seawater intrusion when the well discharge was negligible (natural conditions), the modification in subsequent decades, to be used for forecasting purpose and for evaluate the evolution of groundwater resource. The area actually represents a landscape with anthropic equilibrium based on the works of a land reclamation project (1960s-1990s). Study area is about 365 km2 for a coastline of about 35 km, about which an hydrogeological conceptual model was defined. The area can be conceptualized into three hydrogeological complexes (from the top): sand complex, a clay complex and a sand and conglomerate complex, constituting the deep aquifer, the bottom of which is not well-defined. Shallow aquifer is predominantly fed by direct rainwater infiltration. Deep aquifer is fed by outflows of the mountainous aquifers as the case of limestone aquifer of Pollino Mount,and of shallow granitic aquifer of the Sila massif (Guerricchio and Melidoro, 1975). The maximum piezometric levels of the deep aquifer are equivalent to approximately 40 m asl, so in some areas it presents artesian feature. The computer codes selected for numerical groundwater modelling were MODFLOW (McDonald and Harbaugh, 1998) and SEAWAT (Guo and Langevin, 2002). This groundwater flow modelling is based on the concept of a equivalent homogeneous porous medium by which it is assumed that the real heterogeneous aquifer can be simulated as homogeneous porous media within cells or elements (Anderson, 2002). The modeled aquifer area was uniformly discretized, using Peclet number, into a finite difference grid of 97,735 cells of 240 m x 350 m. For the vertical discretization, model was divided into five layers of variable thicknesses, defined on the basis of a multi-methodological geological survey. Climatic, hydrological and agricultural data were processed to defines inputs for the numerical model based on the variable-density flow. An hydrological balance using monthly and annual of 13 thermo-pluviometric stations falling in the study area, in the time period 1930-1975, was done (Polemio and Casarano, 2008, Polemio et alii, 2013). The numerical model was calibrated with PEST code with a correlation coefficient equal to 0,90. Preliminary results of steady flow and of groundwater salinity spatial are now available and shows it is not sustainable in the case of shallow aquifer and it can be improved in the case of deep aquifer.
    Beschreibung: Published
    Beschreibung: Husum (Germany)
    Beschreibung: 6A. Monitoraggio ambientale, sicurezza e territorio
    Beschreibung: open
    Schlagwort(e): Seawater intrusion ; 03. Hydrosphere::03.02. Hydrology::03.02.03. Groundwater processes
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: Conference paper
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Publikationsdatum: 2020-10-29
    Beschreibung: Il complesso assetto geomorfologico della Calabria e le sue peculiarità climatiche, tra cui una piovosità maggiore della media nazionale, fanno si che questa sia una delle regioni maggiormente esposte a fenomenologie di dissesto idrogeologico. Quale effetto indiretto della rude morfologia regionale e dello sviluppo territoriale oblungo, il reticolo stradale principale ha un basso grado di interconnessione, circostanza questa che ne amplifica l’intrinseca vulnerabilità. In tale contesto, l’incidenza delle vie di comunicazione veloci e ad elevata capacità è trascurabile, mentre le tipologie costruttive risultano essere, come discusso da questo contributo, non adeguate alla diffusa vulnerabilità idrogeologica del territorio. Piogge intense e/o prolungate determinano la frequente insorgenza di crisi territoriali, comunemente definite eventi alluvionali, che determinano sia frane diffuse che catastrofiche piene, e causano perdite di vite umane nonchè gravi e duraturi danni alle infrastrutture di trasporto. In tali circostanze, i dissesti che si determinano lungo la rete viaria rappresentano una fonte di danno sia diretto che indiretto per la comunità e nei casi più gravi costituiscono un impedimento alle attività di protezione civile. L’analisi sistematica delle tipologie di dissesti che hanno interessato la rete viaria in un arco temporale sufficientemente esteso (80 anni), selezionato per la sua significatività, costituisce uno strumento per la valutazione delle relazioni causa effetto fra il verificarsi di piene ed eventi alluvionali da una parte e l’insorgenza dei dissesti della rete viaria dall’altra. La ricerca si propone di individuare indicazioni utili alla programmazione della manutenzione ordinaria e nonché alla gerarchizzazione delle priorità degli interventi volti a minimizzare i danni causati dalle piene alle infrastrutture lineari di trasporto.
    Beschreibung: Published
    Beschreibung: Roma
    Beschreibung: open
    Schlagwort(e): Natural disaster ; Transportation ; Calabria ; Italy ; 05. General::05.08. Risk::05.08.02. Hydrogeological risk
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: Conference paper
    Standort Signatur Einschränkungen Verfügbarkeit
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