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Littérature scientifique sur le sujet « Δ13CCO2 »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Δ13CCO2"

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Kanduč, Tjaša, Simon Zavšek, Sergej Jamnikar, and Timotej Verbovšek. "Spatial distribution and origin of coalbed gases at the working faces of the Velenje Coal Basin, Slovenia, since the year 2000." Materials and Geoenvironment 63, no. 4 (2016): 213–26. http://dx.doi.org/10.1515/rmzmag-2016-0019.

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AbstractGeochemical and isotopic monitoring of coalbed gases at the excavation fields of mining areas in Velenje Coal Basin, Slovenia, has been ongoing since the year 2000 with the aim of obtaining better insights into the distribution and origin of coalbed gases. Results from the mining areas Pesje and Preloge (active excavation fields) are presented here from the year 2000 up to the present. Composition and origin of coalbed gases were determined using mass spectrometry at the Jožef Stefan Institute. From a larger database of geochemical samples, 119 samples were used for analysis and spatia

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Raco, B., R. Battaglini та E. Dotsika. "New isotopic (δ13CCO2–δ13CCH4) fractionation factor limits and chemical characterization of landfill gas". Journal of Geochemical Exploration 145 (жовтень 2014): 40–50. http://dx.doi.org/10.1016/j.gexplo.2014.05.003.

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Cao, Yuanhao, Wei Chen, Yinnan Yuan, Tengxi Wang, and Jiafeng Sun. "Gas Generation and Its Carbon Isotopic Composition during Pyrite-Catalyzed Pyrolysis of Shale with Different Maturities." Processes 10, no. 11 (2022): 2296. http://dx.doi.org/10.3390/pr10112296.

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In this study, two shale samples with different maturities, from Geniai, Lithuania (Ro = 0.7%), and Wenjiaba, China (Ro = 2.7%), were selected for open-system pyrolysis experiments at 400 °C and 500 °C, respectively. The generation of isotopic gases from the shales with different maturities was investigated, and the effects of pyrite catalysis on the carbon isotopic compositions were also studied. It was found that CO2, CH4 and their isotopic gases were the main gaseous products of the pyrolysis of both shales, and more hydrocarbon gases were generated from the low-maturity Geniai shale. The δ

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Baranovskaya, E. I., N. A. Kharitonova, E. A. Filimonova, A. A. Krasnova, and A. A. Maslov. "New data on the chemical and isotopic (H, O, C, S, N) composition of mineral waters of the Essentuki deposit." Moscow University Bulletin. Series 4. Geology, no. 5 (December 17, 2022): 120–36. http://dx.doi.org/10.33623/0579-9406-2022-5-120-136.

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The article presents modern data on the chemical, gas composition, the content of the stable isotopes of oxygen, hydrogen, carbon and sulfur in the natural mineral waters of the Essentuki field. A detailed study of the geological and hydrogeological features of the water circulation territory, their macro components composition, the content of organic matter in the water, temperature conditions and values of δ18ОSMOW, δDSMOW, δ13СDIC, δ18ОDIC, δ34SVCDT, δ13CCO2, δ13CCH4, δ15N revealed the genesis of the aqueous, gas and salt components of the natural mineral waters of the Essentuki field. Esta

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Potter, Joanna, Frederick J. Longstaffe, and Sandra M. Barr. "Vein assemblages and fluid evolution in 18O-depleted Neoproterozoic igneous rocks of the Mira terrane, Cape Breton Island, Nova Scotia1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2Laboratory for Stable Isotope Science (LSIS) Contribution 251." Canadian Journal of Earth Sciences 49, no. 1 (2012): 359–78. http://dx.doi.org/10.1139/e11-074.

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Fluids responsible for regional 18O-depletion of Neoproterozoic igneous rocks in Avalonia are investigated here through a petrographic, microthermometric, and stable isotopic examination of fluid inclusions and minerals from the abundant vein networks of the Mira terrane, Cape Breton Island. Six categories of vein assemblages — from oldest to youngest — are present: (i) quartz–albite, (ii) quartz–epidote, (iii) quartz, (iv) quartz–chlorite–calcite, (v) quartz–calcite, and (vi) calcite. Vein system temperatures were initially as high as ∼300 °C and gradually decreased to ∼200 °C. Moderate salin

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Baranovskaya, Ekaterina I., Natalia A. Kharitonova, Georgy A. Chelnokov, Irina A. Tarasenko, and Alexey A. Maslov. "Chemical and Isotopic Features of a High pCO2 Natural Mineral Water from Essentuki Field (Caucasian Mineral Water Region, Russia)." Water 15, no. 5 (2023): 901. http://dx.doi.org/10.3390/w15050901.

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This article presents the new data on the chemical and gas composition, the content of stable isotopes of oxygen, hydrogen, carbon, and sulfur in natural mineral waters of the Essentuki field. A detailed study of the geological and hydrogeological features of the water circulation area, its major chemical composition, the content of organic matter in water, temperature conditions and δ18OSMOW, δDSMOW, δ13CDIC, δ18ODIC, δ34SVCDT, δ13CCO2, δ13CCH4, δ15N values made it possible to specify the genesis of water, gas, and solute components of the Essentuki CO2-rich mineral water field. The stable is

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Zhao, Rongsheng, Luquan Ren, Sunhua Deng, Youhong Sun, and Zhiyong Chang. "Constrain on Oil Recovery Stage during Oil Shale Subcritical Water Extraction Process Based on Carbon Isotope Fractionation Character." Energies 14, no. 23 (2021): 7839. http://dx.doi.org/10.3390/en14237839.

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In this work, Huadian oil shale was extracted by subcritical water at 365 °C with a time series (2–100 h) to better investigate the carbon isotope fractionation characteristics and how to use its fractionation characteristics to constrain the oil recovery stage during oil shale in situ exploitation. The results revealed that the maximum generation of oil is 70–100 h, and the secondary cracking is limited. The carbon isotopes of the hydrocarbon gases show a normal sequence, with no “rollover” and “reversals” phenomena, and the existence of alkene gases and the CH4-CO2-CO diagram implied that ne

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Fernandez-Cortes, A., R. Perez-Lopez, S. Cuezva, J. M. Calaforra, J. C. Cañaveras, and S. Sanchez-Moral. "Geochemical Fingerprinting of Rising Deep Endogenous Gases in an Active Hypogenic Karst System." Geofluids 2018 (December 6, 2018): 1–19. http://dx.doi.org/10.1155/2018/4934520.

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The hydrothermal caves linked to active faulting can potentially harbour subterranean atmospheres with a distinctive gaseous composition with deep endogenous gases, such as carbon dioxide (CO2) and methane (CH4). In this study, we provide insight into the sourcing, mixing, and biogeochemical processes involved in the dynamic of deep endogenous gas formation in an exceptionally dynamic hypogenic karst system (Vapour Cave, southern Spain) associated with active faulting. The cave environment is characterized by a prevailing combination of rising warm air with large CO2 outgassing (>1%) and hi

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Tang, Junhong, Yue Xu, Guojian Wang, et al. "Methane in Soil Gas and Its Migration to the Atmosphere in the Dawanqi Oilfield, Tarim Basin, China." Geofluids 2019 (July 9, 2019): 1–10. http://dx.doi.org/10.1155/2019/1693746.

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Methane microseepage is the result of natural gas migration from subsurface hydrocarbon accumulations to the Earth’s surface, and it is quite common in hydrocarbon-prone basins. In this study, by analyzing gas concentrations and isotope composition of soil gas, the potentials of CH4 gas transferred to the surface were studied at three measurement transects in Dawanqi oilfield, Tarim Basin, China. It was found that CH4 from deep-buried reservoirs could migrate upwards to the surface through faults, fissures, and permeable rocks, during which some CH4 was oxidized and the unoxidized methane rema

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Schmittner, A., та D. C. Lund. "Early deglacial Atlantic overturning decline and its role in atmospheric CO<sub>2</sub> rise inferred from carbon isotopes (δ<sup>13</sup>C)". Climate of the Past 11, № 2 (2015): 135–52. http://dx.doi.org/10.5194/cp-11-135-2015.

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Abstract. The reason for the initial rise in atmospheric CO2 during the last deglaciation remains unknown. Most recent hypotheses invoke Southern Hemisphere processes such as shifts in midlatitude westerly winds. Coeval changes in the Atlantic meridional overturning circulation (AMOC) are poorly quantified, and their relation to the CO2 increase is not understood. Here we compare simulations from a global, coupled climate–biogeochemistry model that includes a detailed representation of stable carbon isotopes (δ13C) with a synthesis of high-resolution δ13C reconstructions from deep-sea sediment

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Thèses sur le sujet "Δ13CCO2"

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REMIGI, SAMANTHA. "On the application of Raman micro-spectroscopy to the characterization of Earth's CO2 fluids." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/325898.

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Questa tesi indaga l'applicabilità della micro-spettroscopia Raman per migliorare la caratterizzazione dei fluidi a CO2 terrestri, intrappolati come inclusioni fluide (FI) nelle peridotiti. Nello spettro Raman della CO2, la distanza delle due vibrazioni fondamentali è densità (d) dipendente, inoltre sono visibili le vibrazioni 13CO2 e 12CO2. Ciò permette alla micro-spettroscopia Raman di avere il potenziale per caratterizzare in situ FI a CO2, consentendo di comprendere meglio i meccanismi di trasporto del C all'interno della Terra. La proporzionalità tra le aree 13CO2 e 12CO2 con la loro conc

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García, Antón Elena. "Aplicación de la señal isotópica δ13CO2 para la caracterización de mecanismos de transporte de CO2-gas entre atmósfera y subsuelo en sistemas kársticos someros (Cueva de Altamira, Cantabria)". Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/41400.

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Investigación financiada por el proyecto del Ministerio de Ciencia e Innovación CGL2010-17108 (Inv. Principal S. Sánchez Moral) y ha sido posible gracias a una ayuda predoctoral (beca y contrato en prácticas) del programa JAE (Junta de Ampliación de Estudios, CSIC).

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Unger, Stephan [Verfasser]. "Partitioning ecosystem scale carbon fluxes into photosynthetic and respiratory components with emphasis on dynamics in δ13CO2 / Stephan Unger". Bielefeld : Universitätsbibliothek Bielefeld, 2008. http://d-nb.info/1210643588/34.

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Lourantou, Anna. "Contraindre l'augmentation en dioxyde de carbone (CO2) lors des déglaciations basés sur son rapport isotopique stable du carbone (δ13CO2)". Phd thesis, Université Joseph Fourier (Grenoble), 2008. http://tel.archives-ouvertes.fr/tel-00370658.

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Ce travail de thèse est basé sur la mesure du dioxyde de carbone, CO2, et de son isotopologue stable δ13CO2 dans les bulles d'air emprisonnées dans la glace polaire (carotte EPICA Dome C en Antarctique, EDC). On s'intéresse aux transitions rapides entre périodes glaciaires et interglaciaires. Le δ13CO2 permet de départager l'origine du CO2 entre les sources océaniques ou terrestres.<br />Cette étude documente à haute résolution temporelle l'évolution du CO2 et du δ13CO2 pendant les deux dernières déglaciations. La dernière déglaciation est caractérisée par une augmentation en CO2 de 80 ppmv, a

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Actes de conférences sur le sujet "Δ13CCO2"

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Kikvadze, O. E., V. Yu Lavrushin, G. Melikadze та A. Aidarkozhina. "THE CONDITIONS FOR GENERATION OF GEORGIA'S MINERAL WATERS BY ISOTOPIC DATA (δ18O, δD, δ13CCO2, δ13СCН4, δ15N)". У The Geological Evolution of the Water-Rock Interaction. Buryat Scientific Center of SB RAS Press, 2018. http://dx.doi.org/10.31554/978-5-7925-0536-0-2018-288-291.

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Butz, Daniel E., Damien Weidmann, Richard Brownsword, Mark E. Cook, Dale A. Schoeller та Leah D. Whigham. "Immediate biofeedback for energy balance via expired breath δ13CO2". У 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7320299.

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Furghieri Bylaardt Caldas, Priscila, Jonathan Snatic, and Kurt Kronenberger. "Quality Isotope Analysis at the Wellsite: Two Case Studies that Validate GC-C-IRMS Mud Gas Isotope Logging for Deepwater Exploration and Development." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210384-ms.

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Abstract Geochemical analysis of gases produced during the drilling process is a common study on oil and gas exploration and development wells. This process typically includes the use of gas sample containers or other vessels that allow for single point samples to be collected for shipment to an offsite laboratory. Laboratories use high precision devices to obtain valuable information for reservoir characterization including stable carbon isotope ratios. In recent years there have been efforts to provide similar analyses during the drilling process, using ruggedized equipment suitable for well

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