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  Subjects -> MATHEMATICS (Total: 1040 journals)
    - APPLIED MATHEMATICS (83 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (770 journals)
    - MATHEMATICS (GENERAL) (43 journals)
    - NUMERICAL ANALYSIS (23 journals)
    - PROBABILITIES AND MATH STATISTICS (98 journals)

MATHEMATICS (770 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 5)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 7)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 3)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 38)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 12)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 9)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21)
Advances in Decision Sciences     Open Access   (Followers: 3)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access   (Followers: 8)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 17)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 10)
Advances in Materials Science     Open Access   (Followers: 17)
Advances in Mathematical Physics     Open Access   (Followers: 7)
Advances in Mathematics     Full-text available via subscription   (Followers: 15)
Advances in Nonlinear Analysis     Open Access  
Advances in Numerical Analysis     Open Access   (Followers: 7)
Advances in Operations Research     Open Access   (Followers: 12)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 8)
Advances in Pure Mathematics     Open Access   (Followers: 9)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 7)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 13)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 2)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 7)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Open Access   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 8)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 6)
American Journal of Operations Research     Open Access   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 11)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6)
Analysis Mathematica     Full-text available via subscription  
Analysis. International mathematical journal of analysis and its applications     Hybrid Journal   (Followers: 3)
Annales Mathematicae Silesianae     Open Access   (Followers: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 7)
Annals of Mathematics     Full-text available via subscription   (Followers: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 12)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 4)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 1)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 14)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics     Open Access   (Followers: 8)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 4)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Armenian Journal of Mathematics     Open Access   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 25)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 3)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 2)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 1)
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 2)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal   (Followers: 1)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 20)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 13)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals : X     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 15)
Commentarii Mathematici Helvetici     Hybrid Journal  
Communications in Advanced Mathematical Sciences     Open Access  
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 4)
Complex Analysis and its Synergies     Open Access   (Followers: 3)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Compositio Mathematica     Full-text available via subscription  
Comptes Rendus Mathematique     Full-text available via subscription  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 10)
Computational Mechanics     Hybrid Journal   (Followers: 5)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 8)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Concrete Operators     Open Access   (Followers: 5)
Confluentes Mathematici     Hybrid Journal  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 13)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 15)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 31)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 4)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal  
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 2)
Diskretnaya Matematika     Full-text available via subscription  
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Akademii Nauk     Open Access  
Doklady Mathematics     Hybrid Journal  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Advances in Geosciences (ADGEO)
Journal Prestige (SJR): 0.435
Citation Impact (citeScore): 1
Number of Followers: 17  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1680-7340 - ISSN (Online) 1680-7359
Published by Copernicus Publications Homepage  [54 journals]
  • Combination of precise orbit solutions for Sentinel-3A using Variance
           Component Estimation

    • Abstract: Combination of precise orbit solutions for Sentinel-3A using Variance Component Estimation
      Cyril Kobel, Daniel Arnold, and Adrian Jäggi
      Adv. Geosci., 50, 27–37, https://doi.org/10.5194/adgeo-50-27-2019, 2019
      In this article we analyze the benefit of computing a combined solution from individual orbit solutions for the low Earth orbiting satellite Sentinel-3A. The selected combination scheme for calculating the combined solution is Variance Component Estimation. It could be shown that a combination of individual solutions can be beneficial in terms of Satellite Laser Ranging validation. In our opinion the findings are well transferable to other satellite missions.
      PubDate: 2019-11-11T15:32:48+01:00
       
  • Reservoir-scale transdimensional fracture network inversion

    • Abstract: Reservoir-scale transdimensional fracture network inversion
      Márk Somogyvári, Michael Kühn, and Sebastian Reich
      Adv. Geosci., 49, 207–214, https://doi.org/10.5194/adgeo-49-207-2019, 2019
      The Waiwera aquifer hosts a structurally complex geothermal groundwater system, where a localized thermal anomaly feeds the thermal reservoir. The temperature anomaly is formed by the mixing of waters from three different sources: fresh cold groundwater, cold seawater and warm geothermal water. The stratified reservoir rock has been tilted, folded, faulted, and fractured by tectonic movement, providing the pathways for the groundwater. Characterization of such systems is challenging, due to the resulting complex hydraulic and thermal conditions which cannot be represented by a continuous porous matrix. By using discrete fracture network models (DFNs) the discrete aquifer features can be modelled, and the main geological structures can be identified. A major limitation of this modelling approach is that the results are strongly dependent on the parametrization of the chosen initial solution. Classic inversion techniques require to define the number of fractures before any interpretation is done. In this research we apply the transdimensional DFN inversion methodology that overcome this limitation by keeping fracture numbers flexible and gives a good estimation on fracture locations. This stochastic inversion method uses the reversible-jump Markov chain Monte Carlo algorithm and was originally developed for tomographic experiments. In contrast to such applications, this study is limited to the use of steady-state borehole temperature profiles – with significantly less data. This is mitigated by using a strongly simplified DFN model of the reservoir, constructed according to available geological information. We present a synthetic example to prove the viability of the concept, then use the algorithm on field observations for the first time. The fit of the reconstructed temperature fields cannot compete yet with complex three-dimensional continuum models, but indicate areas of the aquifer where fracturing plays a big role. This could not be resolved before with continuum modelling. It is for the first time that the transdimensional DFN inversion was used on field data and on borehole temperature logs as input.
      PubDate: 2019-11-08T14:06:43+01:00
       
  • Regional hydraulic model of the Upper Rhine Graben

    • Abstract: Regional hydraulic model of the Upper Rhine Graben
      Nora Koltzer, Magdalena Scheck-Wenderoth, Mauro Cacace, Maximilian Frick, and Judith Bott
      Adv. Geosci., 49, 197–206, https://doi.org/10.5194/adgeo-49-197-2019, 2019
      In this study we investigate groundwater flow in the deep subsurface of the Upper Rhine Graben. We make use of a 3-D numerical model covering the entire Upper Rhine Graben. The deep hydrodynamics are characterized by fluid flow from the graben flanks towards its center and in the southern half of the graben from south to north. Moreover, local heterogeneities in the shallow flow field arise from the interaction between regional groundwater flow and the heterogeneous sedimentary configuration.
      PubDate: 2019-11-06T14:06:43+01:00
       
  • Future TRFs and GGOS – where to put the next SLR station'

    • Abstract: Future TRFs and GGOS – where to put the next SLR station'
      Alexander Kehm, Mathis Bloßfeld, Peter König, and Florian Seitz
      Adv. Geosci., 50, 17–25, https://doi.org/10.5194/adgeo-50-17-2019, 2019
      Satellite Laser Ranging is one of the four fundamental geodetic space techniques for the accurate determination of geodetic key parameters related to the Earth’s geometry, rotation and gravity field. As the current global SLR station distribution is quite inhomogeneous, a simulation study has been performed in order to determine locations on Earth where additional SLR sites will be most valuable for an improvement of the results, the Antarctic region having been identified as a first priority.
      PubDate: 2019-11-05T13:00:34+01:00
       
  • Storm Tilo over Europe in November 2007: storm surge and impacts on
           societal and energy infrastructure

    • Abstract: Storm Tilo over Europe in November 2007: storm surge and impacts on societal and energy infrastructure
      Anthony James Kettle
      Adv. Geosci., 49, 187–196, https://doi.org/10.5194/adgeo-49-187-2019, 2019
      Storm Tilo on 8–9 November 2007 ranks among the serious winter storms in northern Europe over the past 30 years. Its low pressure centre passed across the northern North Sea, and this led to a cold air outbreak in northwest Europe. Strong north winds across the North Sea contributed to a high storm surge that was serious for coastal regions in eastern England, the Netherlands and Germany. Storm winds and unusually high waves caused shipping accidents and damage to some offshore energy infrastructure. This report presents an outline of the met-ocean conditions and a short overview of storm impacts on societal and energy infrastructure. The progress of the storm surge around the North Sea is analysed using data from the national tide gauge networks. A spectral analysis of the water level data is used to isolate the long period storm surge and short period oscillations (i.e.,
      PubDate: 2019-11-04T13:00:34+01:00
       
  • Understanding the evolution of nuclear waste repositories by performing
           appropriate experiments – selected investigations at Mont Terri rock
           laboratory

    • Abstract: Understanding the evolution of nuclear waste repositories by performing appropriate experiments – selected investigations at Mont Terri rock laboratory
      Kristof Schuster, Markus Furche, Hua Shao, Jürgen Hesser, Jan-Martin Hertzsch, Werner Gräsle, and Dorothee Rebscher
      Adv. Geosci., 49, 175–186, https://doi.org/10.5194/adgeo-49-175-2019, 2019
      The Federal Institute for Geosciences and Natural Resources (BGR) performs experiments in the Swiss Mont Terri rock laboratory to obtain a comprehensive understanding of the evolution of a repository. Activities and results by BGR from actual and still ongoing experiments are presented exemplarily focusing on main aspects regarding the behaviour of underground facilities. BGR's focus lies mainly on aspects of the construction, post-closure transient, and partly post-closure equilibrium phases.
      PubDate: 2019-10-30T15:35:39+01:00
       
  • Earth rotation variations observed by VLBI and the Wettzell “G” ring
           laser during the CONT17 campaign

    • Abstract: Earth rotation variations observed by VLBI and the Wettzell “G” ring laser during the CONT17 campaign
      Sigrid Böhm, Matthias Schartner, André Gebauer, Thomas Klügel, Ulrich Schreiber, and Torben Schüler
      Adv. Geosci., 50, 9–15, https://doi.org/10.5194/adgeo-50-9-2019, 2019
      The precise knowledge of the orientation of an Earth fixed coordinate system with respect to space is of great importance for all tasks of positioning and navigation. In this work we investigated the potential of combining measurements of Very Long Baseline Interferometry and a large ring laser gyroscope to derive highly resolved parameters describing this orientation. The ring laser is not yet at the same level of accuracy and therefore does not substantially influence the results.
      PubDate: 2019-10-28T15:35:39+01:00
       
  • A Review on Kandilli Observatory and Earthquake Research Institute (KOERI)
           Seismic Network and Earthquake Catalog: 2008–2018

    • Abstract: A Review on Kandilli Observatory and Earthquake Research Institute (KOERI) Seismic Network and Earthquake Catalog: 2008–2018
      Musavver Didem Cambaz, Fatih Turhan, Mehmet Yılmazer, Kıvanç Kekovalı, Öcal Necmioğlu, and Doğan Kalafat
      Adv. Geosci., 51, 15–23, https://doi.org/10.5194/adgeo-51-15-2019, 2019
      Kandilli Observatory and Earthquake Research Institute (KOERI) is the oldest institute in Turkey recording, locating and archiving catalogs of earthquakes in the region. A review on the duration magnitude (Md) and local magnitude (Ml) variations has been made and a relationship between Md and Ml has been obtained in order to homogenize KOERI's earthquake catalogs of different time periods.
      PubDate: 2019-10-24T12:04:21+02:00
       
  • Small reservoirs for a sustainable water resources management

    • Abstract: Small reservoirs for a sustainable water resources management
      Stefano Casadei, Silvia Di Francesco, Francesca Giannone, and Arnaldo Pierleoni
      Adv. Geosci., 49, 165–174, https://doi.org/10.5194/adgeo-49-165-2019, 2019
      The increase of drought periods and the high water volume demand for agricultural purposes in Italy suggest to evaluate a full and rational use of all water resources, leading to a rediscovery and enhancement of untapped resources. Specifically, this research focuses on small reservoirs and on their potential contribution to a sustainable water management in agriculture.
      PubDate: 2019-10-17T23:24:24+02:00
       
  • Sensitivity analysis of gas leakage through a fault zone during subsurface
           gas storage in porous formations

    • Abstract: Sensitivity analysis of gas leakage through a fault zone during subsurface gas storage in porous formations
      Firdovsi Gasanzade, Sebastian Bauer, and Wolf Tilmann Pfeiffer
      Adv. Geosci., 49, 155–164, https://doi.org/10.5194/adgeo-49-155-2019, 2019
      Subsurface gas storage in porous media is a viable option to mitigate shortages in energy supply in systems largely based on renewable sources. Fault systems adjacent to or intersecting with gas storage could potentially result in a leakage of stored gas. Variations in formation pressure during a storage operation can affect the gas leakage rates, requiring a site and scenario specific assessment. In this study, a geological model of an existing structure in the North German Basin (NGB) is developed, parameterised and a methane gas storage operation is simulated. Based on the observed storage pressure, a sensitivity study aimed at determining gas leakage rates for different parametrisations of the fault damage zone is performed using a simplified 2-D model. The leakage scenario simulations show a strong parameter dependence with the fault acting as either a barrier or a conduit for gas flow. Furthermore, the storage operation greatly affects the gas leakage rates for a given parametrisation with significant leakage only during the injection periods and thus during increased overpressures in the storage formation. During injection, the peak leakage rates can be as high as 2308 Sm3 d−1 for damage zone permeabilities of 10 mD and a capillary entry pressure of 4 bar. Increasing capillary entry pressure results in a sealing effect. If the capillary entry pressure is scaled according to the damage zone permeability, peak leakage rates can be higher, i.e. 3240 Sm3 d−1 for 10 mD and 0.13 bar. During withdrawal periods, the pressure gradient between a storage formation and a fault zone is reduced or even reversed, resulting in greatly reduced leakage rates or even a temporary stop of the leakage. Total leakage volume from storage formation was assessed based on the 2-D study by considering the exposure of the gas-filled part of the storage formation to the fault zone and subsequently compared with gas in place volume.
      PubDate: 2019-10-16T23:24:24+02:00
       
  • Lab scale salt caverns – first results on construction and
           investigation techniques

    • Abstract: Lab scale salt caverns – first results on construction and investigation techniques
      Bettina Strauch, Martin Zimmer, and Rik Tjallingii
      Adv. Geosci., 49, 149-154, https://doi.org/10.5194/adgeo-49-149-2019, 2019
      Salt caverns are important as subsurface storage space. Knowledge of geochemical interactions in the transition zone between cavity and salt rock is necessary. Lab-based experiments were performed in hand-sized specimens by creating cm-sized cavities. XRF mapping represents a suitable technique to track spatial mineralogical changes related to rock-fluid interaction in salt rocks and showed a clear separation between Na, Mg and K salt layers. Fluorescent visualize potential fluid pathways.
      PubDate: 2019-10-02T09:10:30+02:00
       
  • Characterization of dredged sediments: a first guide to define potentially
           valuable compounds – the case of Malmfjärden Bay, Sweden

    • Abstract: Characterization of dredged sediments: a first guide to define potentially valuable compounds – the case of Malmfjärden Bay, Sweden
      Laura Ferrans, Yahya Jani, Ling Gao, and William Hogland
      Adv. Geosci., 49, 137-147, https://doi.org/10.5194/adgeo-49-137-2019, 2019
      Malmfjärden Bay is semi-enclosed bay located in southeastern Sweden. The water body is currently shallow and requires dredging of bottom sediments to prevent a decreasing water level. This study aimed to characterize its sediments to define potential beneficial uses. The sediments are rich in organic content, have a high concentration of nitrogen and a low–medium concentration of metals. According to Swedish legislation, such sediments can only be employed in industrial and commercial areas.
      PubDate: 2019-09-24T11:18:52+02:00
       
  • 5th generation district heating and cooling systems as a solution for
           renewable urban thermal energy supply

    • Abstract: 5th generation district heating and cooling systems as a solution for renewable urban thermal energy supply
      Stef Boesten, Wilfried Ivens, Stefan C. Dekker, and Herman Eijdems
      Adv. Geosci., 49, 129-136, https://doi.org/10.5194/adgeo-49-129-2019, 2019
      District heating and cooling systems are a viable sustainable solution to provide heat and cold in urban environments. We describe fifth generation district heating and cooling (5GDHC) systems and show how this concept differs from conventional district heating systems. A 5GDHC system is decentralized, bi-directional, close to ground temperature networks that use direct exchange of warm and cold return flows and thermal storage to balance thermal demand as much as possible.
      PubDate: 2019-09-20T15:40:24+02:00
       
  • Using core and outcrop analogues to predict flow pathways in the
           subsurface: examples from the Triassic sandstones of north Cheshire, UK

    • Abstract: Using core and outcrop analogues to predict flow pathways in the subsurface: examples from the Triassic sandstones of north Cheshire, UK
      Joanna Thompson, Daniel Parkes, Edward Hough, and Oliver Wakefield
      Adv. Geosci., 49, 121-127, https://doi.org/10.5194/adgeo-49-121-2019, 2019
      This paper presents a case study from the Sherwood Sandstone Group of North-West England. Measurements taken from published outcrop data and borehole core were used to give an indicative ratio of height to length of different types of unit within the group. This ratio can be used to predict the distribution of these units in the subsurface where information is limited to borehole core. The information can be used to model how water and gases move through these sandstones.
      PubDate: 2019-09-19T15:40:24+02:00
       
  • Emission Characteristics and Risk Assessment in an Industrial Metropolitan
           Area in Taiwan using the AERMOD Model

    • Abstract: Emission Characteristics and Risk Assessment in an Industrial Metropolitan Area in Taiwan using the AERMOD Model
      Jiun-Horng Tsai and Wei-Ting Gu
      Adv. Geosci., 49, 113-119, https://doi.org/10.5194/adgeo-49-113-2019, 2019
      This study investigated profiles of air toxics from mobile sources, stationary sources, and the operations in a port in an industrial metropolitan area in Taiwan. Six carcinogens, including benzene, formaldehyde, 1,3-butadiene, arsenic, 2,3,7,8-TCDD, and diesel particulate matter (DPM), were chosen as the target pollutants. DPM was the pollutant that posed the highest cancer risk among all six air toxics. The dominant sources of DPM were ocean-going vessels and diesel trucks.
      PubDate: 2019-09-19T15:40:24+02:00
       
  • Separating physical impacts from natural variability using piggybacking
           (master-slave) technique

    • Abstract: Separating physical impacts from natural variability using piggybacking (master-slave) technique
      Wojciech W. Grabowski
      Adv. Geosci., 49, 105-111, https://doi.org/10.5194/adgeo-49-105-2019, 2019
      In a chaotic system, like moist convection, it is difficult to separate the impact of a physical process from effects of natural variability. This is because modifying even a small element of the system physics typically leads to a different system evolution. This paper discusses a relatively simple and computationally efficient modelling methodology that allows separation of the physical impact from differences originating from contrasting flow realizations.
      PubDate: 2019-09-09T08:54:32+02:00
       
  • Permeability of matrix-fracture systems under mechanical loading –
           constraints from laboratory experiments and 3-D numerical modelling

    • Abstract: Permeability of matrix-fracture systems under mechanical loading – constraints from laboratory experiments and 3-D numerical modelling
      Guido Blöcher, Christian Kluge, Harald Milsch, Mauro Cacace, Antoine B. Jacquey, and Jean Schmittbuhl
      Adv. Geosci., 49, 95-104, https://doi.org/10.5194/adgeo-49-95-2019, 2019
      The focus of the paper is to evaluate the permeability change of a matrix-fracture systems under mechanical loading und to understand the processes behind. This evaluation is based on data from laboratory experiments in comparison to 3-D numerical modelling results.
      PubDate: 2019-09-05T13:16:43+02:00
       
  • Inferring microseismic source mechanisms and in situ stresses during
           triaxial deformation of a North-Sea-analogue sandstone

    • Abstract: Inferring microseismic source mechanisms and in situ stresses during triaxial deformation of a North-Sea-analogue sandstone
      Luke Griffiths, Jérémie Dautriat, Ismael Vera Rodriguez, Kamran Iranpour, Guillaume Sauvin, Joonsang Park, Joel Sarout, Magnus Soldal, Lars Grande, Volker Oye, David N. Dewhurst, Nazmul Haque Mondol, and Jung Chan Choi
      Adv. Geosci., 49, 85-93, https://doi.org/10.5194/adgeo-49-85-2019, 2019
      Faint earth tremors may occur when exploiting geological reservoirs to extract hydrocarbons, produce geothermal energy, or store CO2. This microseismicity may reveal the location of fractures within the reservoir, and the mechanical stresses acting on them. We present and demonstrate (on laboratory data) a new workflow for analysing microseismic data, considering fracture models relevant to geoengineering applications to infer fracture mechanisms and the stress conditions local to them.
      PubDate: 2019-09-04T13:16:43+02:00
       
  • On the Density Variability of Poissonian Discrete Fracture Networks, with
           application to power-law fracture size distributions

    • Abstract: On the Density Variability of Poissonian Discrete Fracture Networks, with application to power-law fracture size distributions
      Etienne Lavoine, Philippe Davy, Caroline Darcel, and Romain Le Goc
      Adv. Geosci., 49, 77-83, https://doi.org/10.5194/adgeo-49-77-2019, 2019
      In this study, we are interested in quantifying natural fracture density variability, at any scale. We develop and numerically validate analytical solutions considering stochastic Discrete Fracture Networks, with application to networks following power-law fracture size distributions. Particularly, we show that for this kind of networks, the scaling of three-dimensional fracture density variability clearly depends on the power-law exponent, but not on the orientation distribution.
      PubDate: 2019-09-03T13:28:29+02:00
       
  • Exploratory what-if analysis of some debated canister failure modes in the
           review of a licence application for the construction and operation of a
           spent nuclear fuel repository in Sweden

    • Abstract: Exploratory what-if analysis of some debated canister failure modes in the review of a licence application for the construction and operation of a spent nuclear fuel repository in Sweden
      Bo Strömberg, Lena Sonnerfelt, and Henrik Öberg
      Adv. Geosci., 49, 67-75, https://doi.org/10.5194/adgeo-49-67-2019, 2019
      A potential post-closure release of radionuclides from a KBS-3 spent fuel repository depends on the failure modes of copper canisters. It is generally accepted that a combined erosion/corrosion case and future large earthquakes could cause such failures. In paper, we address other proposed failure modes, not by assessing their relative merits but rather their potential consequences. It is judged that a hypothetical poor creep ductility of copper would have the largest potential consequences.
      PubDate: 2019-08-30T16:12:25+02:00
       
 
 
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