In this study the variability of greenhouse gases (GHGs) concentrations along lateral and vertical dimensions of the chalk aquifer located in the eastern part of Belgium was examined in order to understand its dependence on hydrogeological and hydrogeochemical conditions. Groundwater samples from 29 wells/piezometers were analyzed for concentrations of nitrous oxide (N 2 O), carbon dioxide (CO 2), methane (CH 4), major and minor elements and stable isotopes of nitrate (NO 3 −), nitrous oxide (N 2 O), sulfate (SO 4 2−) and boron (B). For lateral investigations, four zones with different environmental settings were identified (southern, central, northeastern and northern). Groundwater was oversaturated with GHGs with respect to its equilibrium concentrations with the atmosphere in all zones, except the northern one, undersaturated in N 2 O (0.07 ± 0.08 μgN/L vs. 0.3 μgN/L). Vertical dimension studies showed the decrease in CO 2 concentration and significant changes in both isotope signatures and concentration of N 2 O with depth. The production of N 2 O could be attributed to a combination of nitrification and denitrification processes occurring at different depths. CO 2 concentration is controlled by the process of dissolution of carbonate minerals which constitute aquifer geology. CH 4 is produced due to methanogenesis in deeper parts of the aquifer, though its thermogenic origin is also possible. Differences in hydrogeochemical settings and changing intensity of biogeochemical processes across the area and with depth have considerable effect on GHGs concentrations. Thus, before estimating GHGs fluxes at the groundwater-river interface insights obtained from larger-scale investigations are required in order to identify the representative spatial zones which govern GHGs emissions.
This study investigates the occurrence of greenhouse gases (GHGs) and the role of groundwater as an indirect pathway of GHG emissions into surface waters in a gaining stretch of the Triffoy River agricultural catchment (Belgium). To this end, nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) concentrations, the stable isotopes of nitrate and major ions were monitored in river and groundwater during 8 months. Results indicated that groundwater was strongly oversaturated in N2O and CO2 with respect to atmospheric equilibrium (50.1 vs. 0.55 µg/L for N2O and 14,569 vs. 400 ppm for CO2), but only marginally for CH4 (0.45 vs. 0.056 µg/L), suggesting that groundwater can be a source of these GHGs to the atmosphere. Nitrification seemed to be the main process for the accumulation of N2O in groundwater. Oxic conditions prevailing in the aquifer were not prone to the accumulation of CH4. In fact, the emissions of CH4 from the river were one to two orders of magnitude higher than the inputs from groundwater, meaning that CH4 emissions from the river were due to CH4 in-situ production in riverbed or riparian zone sediments. For CO2 and N2O, average emissions from groundwater were 1.5 × 10 5 kg CO2 Ha-1 y-1 and 207.1 kg N2O Ha-1 y-1 , respectively. Groundwater is probably an important source of N2O and CO2 in gaining streams but when the measures are scaled at catchment scale, these fluxes are probably relatively modest. Nevertheless, their quantification would better constrain nitrogen and carbon budgets in natural systems.
<p>Increase in the concentration of greenhouse gases (GHGs) in the atmosphere threatens the existence of many ecosystems and their inhabitants. Agricultural activities contribute up to 70 % of total anthropogenic emission of nitrous oxide (N<sub>2</sub>O), one of the GHGs, which is characterized with the highest global warming potential and contributes to stratospheric ozone depletion. Our study presents the results obtained from the recent field and lab activities carried out in order to obtain better insight into the factors that define the presence of N<sub>2</sub>O in groundwater. Previous large scale investigations, performed in the Hesbaye chalk aquifer in Eastern Belgium, suggested that the concentration of N<sub>2</sub>O in the aquifer depends on different, possibly overlapping biochemical processes such as nitrification, denitrification and/or nitrifier-denitrification. This study explored the occurrence of biochemical stratification in the same aquifer and its impact on N<sub>2</sub>O production and consumption mechanisms. For this purpose low flow sampling technique was applied at different depth intervals to obtain better insight into the extent of oxic and anoxic zones and variability of concentrations of GHGs along the vertical profile. Collected groundwater samples were analyzed for the range of hydrochemical parameters as well as NO<sub>3</sub><sup>-</sup>, N<sub>2</sub>O, H<sub>2</sub>O and B isotopes signatures and N<sub>2</sub>O isotopomers. Afterwards, rates of nitrification and denitrification processes were estimated based on short-term incubations of collected groundwater amended with NO<sub>3</sub><sup>-</sup> and NH<sub>4</sub><sup>+</sup> compounds labeled with heavy <sup>15</sup>N isotope. In addition, in order to characterize the dynamics of ongoing biogeochemical processes, polymerase chain reaction (PCR) tests for detection of the activity-specific enzymes in the aquifer were performed. Such studies help to clarify which conditions are more prone to the accumulation of high concentrations of GHGs in aquifers and better constrain models which estimate local and regional GHGs budgets.</p><p>Acknowledgments</p><p>This project has received funding from the European Union&#8217;s Horizon 2020 research and innovation&#160; programme under the Marie Sk&#322;odowska-Curie grant agreement No 675120.</p>
The theme of the Second World War and the Holocaust is one of the topical themes of contemporary fiction and cinema. Outstanding writers and directors of our time are turning to the embodiment of this tragic topic. They set themselves the task of comprehending the past and giving the third millennium generation spiritual experience that will help young people combat the manifestations of racism and xenophobia in the modern world. The article deals with the novel “Schindler’s Ark” by Th. Keneally, “The Children of Noah” by E.-E. Schmitt, “The Boy in the Striped Pajamas” by J. Boyne, “The Book Tief” by M. Zuzak and movies that are based on these books. In the genres of a historic novel and psychological story based on the documents, the writers revealed the complicated social processes in Europe during 1930-1940. The writers described the historic events within the life of ordinary people who lived in the terrible circumstances of the totalitarian system. The symbols playedthe main role in revealing the subject of the Holocaust in the novels and films about the Second World War and the Holocaust. Thomas Keneally continued the traditions of romantic irony and added to it some social, psychological and philosophical meanings. The irony in the novel by Thomas Keneally “Schindler’s Ark” plays an important role in the investigation of European society in the tragic period of the 20thcentury. In the novels by Thomas Keneally irony takes place on the different levels such as plot, composition, imagology, time and space, style and language. T. Keneally broadens the meaning of irony and its function in the documentary and historic novel. The irony in the novel “Schindler’s Ark” maintains some main functions: social for explaining the anti-humanistic essence of fascism, war, racial hatred, research in investigating the tragedy of the Holocaust and its consequences, psychological in revealing the psychology of people of different social class, philosophical in discussing the important issues of human life in the word, axiological dealing with the values of mercy, morality, the ability to resist violence. T. Kenealy represents different forms of irony such as the irony of the narrator, the irony of the author, the combination of controversial documentary facts, the contradiction of phenomenon and notions, the comparison of the different points of view, self-irony, irony as inner enlightenment, catharsis. In the novel “Schindler’s Ark” by T. Kenealy the author of the article analyzed the traditions of world literature such as B. Brecht within the motive of personal financial profit from the war, N. Gogol within the motive of buying and selling the dead souls. The writer represented these motives in his own way as the events took place during the real historic time, and he found the inner power in people of past century to keep their life, humanity and culture on the Earth. The irony is a unique feature of T. Keneally’s individual style and it enriched the genre of novel.
The metamodernist mood of the modern era increasingly clearly correlates with the transformation of literary methodologies and methods of reading, analysis, and interpretation of literary texts. The study of the genre specificity of the novel is one of the essential segments of the latest scientific studies, given its flexibility and significant textual representation in various national works of literature. This paper offers a critical review of the key stages in the history of the study of the novel as a literary genre, as well as shows the possibilities of understanding the poetic aspects of the author’s style. The material of the research relies on the novels by the Canadian writer Lucy Maud Montgomery and the US writer Eleanor Porter. Both authors belonged to the same historical and cultural era; their work has many typological parallels due to objective factors. At the same time, the modernist worldview was embodied in each stylistic manner in its own way. Comparison of individual styles makes it possible to carry out a typological analysis within a particular genre with access to the study of common sources of image creation, as well as modeling the interpretive paradigm of metamodernism in the projection on the literature of different historical periods taking into account national characteristics. At the same time, the research opens up the prospect of expanding the methodological horizons of narratology for its progress beyond its “boundaries”: outside of literary studies, in a significant context, as well as in space outside of fiction.
The Ukrainian sector of the Western Black Sea (WBS) is one of the last remaining exploration frontiers in Europe. This area, which includes shelf to deepwater environments, is underexplored with no drilling of targets in water depths exceeding 100 meters. That is why, the Ukrainian sector of the WBS is attractive for exploration, especially in the context of new play types and targets such as biogenic gas. These hydrocarbon formations have been proven by neighboring Romania and Turkey in the areas adjacent to Ukrainian waters. Therefore, a rigorous Basin Analysis program has been initiated to assess the petroleum systems and play risks in the entire Ukrainian sector of the WBS. The goals of this program are: 1) to establish a regional geoscience foundation following best industrial practices in exploration; 2) to enable establishing more accurate risking and ranking procedures for an exploration portfolio and 3) to provide critical support for the analysis of a new generation of seismic data that is currently being acquired. In this paper the initial scope of work is presented.
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