 Subjects -> GEOGRAPHY (Total: 493 journals)
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- Metakaolin-based geopolymers for stone conservation: preliminary results
on alkaline activation
Abstract: Metakaolin-based geopolymers for stone conservation: preliminary results on alkaline activation
Sophie van Roosmale, Tim De Kock, and Johan Blom
Adv. Geosci., 58, 149–156, https://doi.org/10.5194/adgeo-58-149-2023, 2023
Metakaolin-based geopolymers with a Ca(OH)2 activator are investigated in the context of stone-built heritage conservation. The results of the reactivity tests are compared to the results of geopolymers with more well-known activators like NaOH and KOH. Subsequently, the physico-mechemical properties of the geopolymer with Ca(OH)2 is also investigated, in combination with standardized aggregates of marl powder, limestone powder and quartz sand.
PubDate: Fri, 27 Jan 2023 13:02:35 +010
DOI: 10.5194/adgeo-58-149-2023 2023
- Storm Kyrill and the storms of mid-January 2007: Societal and Energy
Impacts in Europe
Abstract: Storm Kyrill and the storms of mid-January 2007: Societal and Energy Impacts in Europe
Anthony J. Kettle
Adv. Geosci., 58, 135–147, https://doi.org/10.5194/adgeo-58-135-2023, 2023
Storm Kyrill in January 2007 was one of the worst storms in northern Europe over the past 50 years. The paper presents an overview of the infrastructure and societal impacts of the storm from a compilation of media sources. Energy meteorology impacts were prominent in the large number of power cuts in Europe. An analysis is made of tide gauge data around the North Sea to assess if there had been a recurrence of the rogue wave event at FINO1 from Storm Britta on 1 November 2006.
PubDate: Thu, 26 Jan 2023 10:51:27 +010
DOI: 10.5194/adgeo-58-135-2023 2023
- Spatial distribution of Mesozoic deposits and their temperature ranges
within the Weser-Wiehengebirge Syncline of the inverted Lower Saxony
Basin, Minden area, Germany
Abstract: Spatial distribution of Mesozoic deposits and their temperature ranges within the Weser-Wiehengebirge Syncline of the inverted Lower Saxony Basin, Minden area, Germany
Alexander Jüstel, Olga Knaub, Frank Strozyk, Gregor Bussmann, Florian Wellmann, and Peter Kukla
Adv. Geosci., 58, 121–134, https://doi.org/10.5194/adgeo-58-121-2023, 2023
This study evaluates the structural geological requirements for the city of Minden, Germany, in order to provide thermal energy for domestic, commercial or even industrial usage. The structural geological modeling and the interpretation of a regional seismic line show possible geothermal reservoirs within different Mesozoic stratigraphic units (e.g. Keuper and Middle Bunter sandstones) at varying depths up to 4,100 m including temperatures obtained through analytical calculations above 150°C.
PubDate: Thu, 19 Jan 2023 09:32:35 +010
DOI: 10.5194/adgeo-58-121-2023 2023
- TransPyREnd: a code for modelling the transport of radionuclides on
geological timescales
Abstract: TransPyREnd: a code for modelling the transport of radionuclides on geological timescales
Christoph Behrens, Elco Luijendijk, Phillip Kreye, Florian Panitz, Merle Bjorge, Marlene Gelleszun, Alexander Renz, Shorash Miro, and Wolfram Rühaak
Adv. Geosci., 58, 109–119, https://doi.org/10.5194/adgeo-58-109-2023, 2023
The mathematical basics of a numerical code developed specifically for the search of a site for high-level radioactive waste in Germany is presented.The code is developed in accordance to the specific regulations. First tests of the code are shown.
PubDate: Wed, 18 Jan 2023 09:32:35 +010
DOI: 10.5194/adgeo-58-109-2023 2023
- Inverse flow zone characterization using distributed temperature sensing
in a deep geothermal production well located in the Southern German
Molasse Basin
Abstract: Inverse flow zone characterization using distributed temperature sensing in a deep geothermal production well located in the Southern German Molasse Basin
Felix Schölderle, Daniela Pfrang, and Kai Zosseder
Adv. Geosci., 58, 101–108, https://doi.org/10.5194/adgeo-58-101-2023, 2023
In 2019, a fiber optic cable was installed in the middle of a deep geothermal production well to the reservoir in Munich, Germany. This cable hangs freely below the pump and allows continuous measurements of the temperature at every meter of the cable. The well was put into operation for the first time in the summer of 2021. We used the fiber optic cable to monitor the temperature profile during production in the reservoir and to quantitatively interpret the flow zones using an inverse model.
PubDate: Tue, 10 Jan 2023 03:11:19 +010
DOI: 10.5194/adgeo-58-101-2023 2023
- Sources of Contaminants of Emerging Concern in Groundwater of Barcelona
Urban Area
Abstract: Sources of Contaminants of Emerging Concern in Groundwater of Barcelona Urban Area
Diego Schmidlin, Laura Scheiber, Marc Teixidó, Enric Vázquez, Rotman Criollo, Anna Jurado, Diana Puigserver, Silvia Burdons, and Mónica Enrich
Adv. Geosci., 59, 59–67, https://doi.org/10.5194/adgeo-59-59-2023, 2023
The demand of water for human consumption in urban areas is crucial where groundwater must be consider a useful resource, but commonly in these context due to anthropic activities these water are highly contaminated. Among these contaminants of special interest are the contaminants of emerging concern which present a high risk to the aquatic environment and human health. We found and study a series of these compounds in Barcelona’s groundwaters and identify some possible origins/sources of them.
PubDate: Tue, 03 Jan 2023 10:51:45 +010
DOI: 10.5194/adgeo-59-59-2023 2023
- Modelling of groundwater recharge in the megacity of Lagos, Nigeria:
preliminary results using WetSpass-M
Abstract: Modelling of groundwater recharge in the megacity of Lagos, Nigeria: preliminary results using WetSpass-M
Oluwaseun Franklin Olabode and Jean-Christophe Comte
Adv. Geosci., 59, 53–57, https://doi.org/10.5194/adgeo-59-53-2022, 2022
The processes which dictate replenishment of coastal aquifer systems under demographic pressures in a fast-growing megacity, Lagos, Nigeria are yet to be quantified and understood. The recharge estimates and trends provided from this study show that over the last two decades, water demand has overtaken the recharge rate over the urban agglomeration and is now rapidly converging towards the total aquifer recharge rate.
PubDate: Tue, 20 Dec 2022 09:42:38 +010
DOI: 10.5194/adgeo-59-53-2022 2022
- The CASPER project: an integrated approach for pollution risk assessment
in peri-urban groundwater catchment areas
Abstract: The CASPER project: an integrated approach for pollution risk assessment in peri-urban groundwater catchment areas
Serge Brouyère, Laura Balzani, and Philippe Orban
Adv. Geosci., 59, 45–51, https://doi.org/10.5194/adgeo-59-45-2022, 2022
The CASPER project funded by SPGE in the Walloon Region of Belgium aims at developing an integrated approach for the evaluation and management of pollution risks for peri-urban groundwater catchmentswhich fully complies with the requirements of the 2020 DWD recast. It is based on a mass-flux risk assessment concept and a associated GIS-based decision support system.
PubDate: Wed, 14 Dec 2022 07:10:34 +010
DOI: 10.5194/adgeo-59-45-2022 2022
- Numerical investigations to assess ground subsidence and fault
reactivation during underground coal gasification
Abstract: Numerical investigations to assess ground subsidence and fault reactivation during underground coal gasification
Mansour Hedayatzadeh, Vasilis Sarhosis, Torsten Gorka, Mária Hámor-Vidó, and István Kalmár
Adv. Geosci., 58, 93–99, https://doi.org/10.5194/adgeo-58-93-2022, 2022
This paper presents the implementation of probabilistic analyses to assess environmental risks while improving the productivity of the in situ coal conversion process. Parametric modelling was employed for the Máza–Váralja (Hungary) coal deposit, and parameter uncertainty was undertaken to identify the potential risks to human health and the environment. The outputs of the parametric study focused on assessing reactor stability, fault integrity, surface subsidence, and hydraulic processes.
PubDate: Thu, 08 Dec 2022 15:20:23 +010
DOI: 10.5194/adgeo-58-93-2022 2022
- Preface to the special issue of the Division Energy, Resources and the
Environment at the EGU General Assembly EGU22
Abstract: Preface to the special issue of the Division Energy, Resources and the Environment at the EGU General Assembly EGU22
Viktor J. Bruckman, Gregor Giebel, Christopher Juhlin, Sonja Martens, and Michael Kühn
Adv. Geosci., 58, 87–91, https://doi.org/10.5194/adgeo-58-87-2022, 2022
The European Geosciences Union (EGU) is one of the leading global bottom-up societies that promotes earth, planetary and space sciences. In its annual general assemblies, EGU brings together experts from all over the world to discuss cutting-edge research and implementation of findings in their respective disciplines and beyond via its inter-and transdisciplinary sessions, and thus offers a unique forum for scientific exchange, science-policy interaction, and joint development of strategies for future research endeavours. Within that framework the Energy, Resources and the Environment (ERE) Programme Group provides the platform for discussion about adequate and reliable supplies of affordable energy and other georesources in environmentally sustainable ways. This special issue in Advances in Geosciences comprises a collection of contributions from the ERE Programme Group, which were presented at the General Assembly 2022. It was held in hybrid mode for the first time from 23–27 May 2022, after two virtual assemblies in 2020 and 2021.
PubDate: Thu, 08 Dec 2022 15:20:23 +010
DOI: 10.5194/adgeo-58-87-2022 2022
- The influence of sedimentary heterogeneity on the diffusion of
radionuclides in the sandy facies of Opalinus Clay at the field scale
Abstract: The influence of sedimentary heterogeneity on the diffusion of radionuclides in the sandy facies of Opalinus Clay at the field scale
Chaofan Chen, Tao Yuan, Renchao Lu, Cornelius Fischer, Olaf Kolditz, and Haibing Shao
Adv. Geosci., 58, 77–85, https://doi.org/10.5194/adgeo-58-77-2022, 2022
The moving distance of the diffusion front is farther away the canister center, along the direction with the neighboring layer having lower diffusion coefficient. When the bedding angle increases, the diffusion front moves farther in z+ direction, reflecting the increase in effective diffusivity and higher impact of parallel-to-bedding diffusion. The neighboring layers can slightly reshape the diffusion front line of the radionuclide.
PubDate: Wed, 23 Nov 2022 18:00:56 +010
DOI: 10.5194/adgeo-58-77-2022 2022
- Environmental hazard quantification toolkit based on modular numerical
simulations
Abstract: Environmental hazard quantification toolkit based on modular numerical simulations
Morgan Tranter, Svenja Steding, Christopher Otto, Konstantina Pyrgaki, Mansour Hedayatzadeh, Vasilis Sarhosis, Nikolaos Koukouzas, Georgios Louloudis, Christos Roumpos, and Thomas Kempka
Adv. Geosci., 58, 67–76, https://doi.org/10.5194/adgeo-58-67-2022, 2022
The quantification of the impacts on the environment and human health is a crucial prerequisite for geological sub-surface utilisation projects. With the presented approach, the shortcomings of using conceptually simplified models are substantially reduced, since subsurface complexities are accounted for. The transparency of the assessment basis should generally increase the acceptance of geoengineering projects, considered one of the crucial aspects for geological subsurface utilisation.
PubDate: Tue, 22 Nov 2022 18:00:56 +010
DOI: 10.5194/adgeo-58-67-2022 2022
- Numerical Analysis of Potential Contaminant Migration from Abandoned In
Situ Coal Conversion Reactors
Abstract: Numerical Analysis of Potential Contaminant Migration from Abandoned In Situ Coal Conversion Reactors
Christopher Otto, Svenja Steding, Morgan Tranter, Torsten Gorka, Mária Hámor-Vidó, Wioleta Basa, Krzysztof Kapusta, István Kalmár, and Thomas Kempka
Adv. Geosci., 58, 55–66, https://doi.org/10.5194/adgeo-58-55-2022, 2022
For a potential utilisation of coal resources located in Hungary, an assessment of groundwater pollution resulting from a water-borne contaminant pool has been undertaken. A sensitivity analysis was carried out by means of numerical simulations. Simulation results demonstrate that fluid flow via the regional faults is the main driver for a potential contamination of shallow groundwater aquifers. A parameter correlation analysis is presented.
PubDate: Mon, 21 Nov 2022 18:00:56 +010
DOI: 10.5194/adgeo-58-55-2022 2022
- ASSET project: assessing sustainable urban drainage system (SUDS)
efficiency to reduce urban runoff water contamination
Abstract: ASSET project: assessing sustainable urban drainage system (SUDS) efficiency to reduce urban runoff water contamination
Laura Scheiber, Marc Teixidó, Rotman Criollo, Francesc Labad, Enric Vázquez-Suñé, María Izquierdo, María José Chesa Marro, and Daniel de Castro
Adv. Geosci., 59, 37–44, https://doi.org/10.5194/adgeo-59-37-2022, 2022
The knowledge of the aquifer characteristics and its quality together with these vulnerable areas may lead to improve the installation of SUDS, reducing the input of contaminants through these infrastructures. The implementation of this methodology aims to facilitate water users and urban managers to control their potential negative effects on the receiving water body. In addtion, the outcomes of its application may be used to optimize the groundwater management in the city.
PubDate: Fri, 18 Nov 2022 11:43:50 +010
DOI: 10.5194/adgeo-59-37-2022 2022
- Protection of peri-urban groundwater catchments: a multi-tracer approach
for the identification of urban pollution sources
Abstract: Protection of peri-urban groundwater catchments: a multi-tracer approach for the identification of urban pollution sources
Laura Balzani, Philippe Orban, and Serge Brouyère
Adv. Geosci., 59, 27–35, https://doi.org/10.5194/adgeo-59-27-2022, 2022
The project develops an integrated methodology to optimise the protection of groundwater catchments from urban pollution. This requires identifying their origins which are not always known, characterising composition and importance in terms of pollutant load, assessing current/future risks for the environment and the catchment itself, and the need for remediation. To do so, a combination of tracers and approaches has been applied and a decision-making reference system is going to be developed.
PubDate: Fri, 18 Nov 2022 11:43:50 +010
DOI: 10.5194/adgeo-59-27-2022 2022
- Insights on the hydrological cycle and its interaction with anthropic
pressures: the Katari basin and minor Titicaca lake
Abstract: Insights on the hydrological cycle and its interaction with anthropic pressures: the Katari basin and minor Titicaca lake
Rotman A. Criollo Manjarrez, Laura Scheiber, Laura Poza, Sonia Valdivielso Mijangos, Pedro Simunovic, and Enric Vázquez-Suñé
Adv. Geosci., 59, 17–25, https://doi.org/10.5194/adgeo-59-17-2022, 2022
In the current climate and socioeconomic context, The Katari and Minor Lake Titicaca basin (Bolivia) has special interest because of the sensitive and vulnerable environment and ecosystems around the Titicaca Lake. These environments support traditional local human populations and other beneficial human activities. That is why we made workshops with local authorities and performed a global vision of the aquifer behavior and its vulnerability, which would generate a better decision-make process.
PubDate: Tue, 15 Nov 2022 11:41:49 +010
DOI: 10.5194/adgeo-59-17-2022 2022
- Upwelling mechanisms of deep saline waters via Quaternary erosion windows
considering varying hydrogeological boundary conditions
Abstract: Upwelling mechanisms of deep saline waters via Quaternary erosion windows considering varying hydrogeological boundary conditions
Elena Chabab, Michael Kühn, and Thomas Kempka
Adv. Geosci., 58, 47–54, https://doi.org/10.5194/adgeo-58-47-2022, 2022
The present study, uses density-driven flow and transport models to evaluate mechanisms of saline water intrusion from deep aquifers into the freshwater column used for drinking water supply under different boundary conditions and for a specific site in the German Federal State of Brandenburg. Results show that mainly decreasing groundwater recharge leads to increased and earlier salinisation which highlights the need for waterworks to initiate effective countermeasures quickly and in time.
PubDate: Mon, 14 Nov 2022 12:21:00 +010
DOI: 10.5194/adgeo-58-47-2022 2022
- Laboratory assessment of corrosion rate of carbon steel ground heat
exchangers
Abstract: Laboratory assessment of corrosion rate of carbon steel ground heat exchangers
Gianluca Cadelano, Alessandro Bortolin, Eloisa Di Sipio, Giovanni Ferrarini, Paolo Bison, Adriana Bernardi, Giorgia Dalla Santa, and Antonio Galgaro
Adv. Geosci., 58, 41–46, https://doi.org/10.5194/adgeo-58-41-2022, 2022
Within the Cheap-GSHPs and GEO4CIVHIC projects, innovations were advanced in the field of ground heat exchangers design for shallow geothermal systems. Among these, a metallic type has been proposed that can be installed in direct contact with the underground. As carbon steel is prone to corrosion and corrosivity varies based on site-specific underground conditions, a laboratory assessment methodology was applied to metal samples to assess the corrosion rate and forecast the durability.
PubDate: Fri, 11 Nov 2022 15:36:34 +010
DOI: 10.5194/adgeo-58-41-2022 2022
- Geographic Information System (GIS) as a basis for the next generation of
hydrogeological models to manage the geothermal area Waiwera (New Zealand)
Abstract: Geographic Information System (GIS) as a basis for the next generation of hydrogeological models to manage the geothermal area Waiwera (New Zealand)
Michael Kühn, Melissa Präg, Ivy Becker, Christoph Hilgers, Andreas Grafe, and Thomas Kempka
Adv. Geosci., 58, 31–39, https://doi.org/10.5194/adgeo-58-31-2022, 2022
The geothermal hot water reservoir below the small town of Waiwera in New Zealand has been known to the indigenous Maori for many centuries. Overproduction by European immigrants led to a water level decrease and consequently artesian flow from the wells and the seeps on the beach ceased. The Te Kaunihera o Tāmaki Makaurau Auckland Council established the Waiwera Thermal Groundwater Allocation and Management Plan to allow the geothermal system to recover.
PubDate: Tue, 08 Nov 2022 13:27:06 +010
DOI: 10.5194/adgeo-58-31-2022 2022
- Verification of TRANSPORT Simulation Environment coupling with PHREEQC for
reactive transport modelling
Abstract: Verification of TRANSPORT Simulation Environment coupling with PHREEQC for reactive transport modelling
Thomas Kempka, Svenja Steding, and Michael Kühn
Adv. Geosci., 58, 19–29, https://doi.org/10.5194/adgeo-58-19-2022, 2022
The TRANsport Simulation Environment (TRANSE) was coupled with the geochemical reaction module PHREEQC, providing multiple new features that make it applicable to complex reactive transport problems in various geoscientific fields. Two computationally demanding and complex geochemical benchmarks were used in the present study to successfully verify the code implementation.
PubDate: Thu, 03 Nov 2022 07:02:53 +010
DOI: 10.5194/adgeo-58-19-2022 2022
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