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  • 11
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    Significance of conodont data for explaining geosystem perturbations during the Middle Devonian Kačák Episode (2023)
    In:  Marine Micropaleontology
    Details
    Publication Date: 2024-07-08
    Description: The present review of published data as well as the new results demonstrate the versatility of conodonts in documenting and explaining global environmental fluctuations related to the Kačák Episode (KE) in the latest Eifelian. Although the conodont zonation of the KE interval is ambiguous and requires revision, the compilation of conodont stratigraphic ranges shows their potential for a precise worldwide correlation of relevant marine strata. Conodont biofacies may serve to document environmental changes connected with KE, in particular the sealevel rise at its beginning, followed by a regressive trend. Nevertheless, the familiar Icriodus/Polygnathus ratio should be carefully applied as an indication of water depth and nearshore vs. offshore position, being controlled also by other factors, such as paleolatitude and/or climate. Oxygen isotopes in conodont apatite, studied using secondary ion mass spectrometry technique evidence a warming at the onset of KE, based on the new data from the open marine facies of the Prague Basin. At the same time, they indicated climate-controlled salinity fluctuations in the epeiric Belarusian Basin. The present investigations as well as previous results suggest caution when analyzing thermally altered conodonts which may result in biased oxygen isotope signatures. The present experience suggests the conodont colour alteration index CAI 3 as a boundary value above which the caution is necessary.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 12
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    To Rotate or to Link? The Connection Between the Red Sea and Gulf of Aden Rifts in Central Afar (2024)
    In:  Geophysical Research Letters
    Details
    Publication Date: 2024-07-08
    Description: Central Afar is shaped by the interaction between the Red Sea (RS) and Gulf of Aden (GoA) rifts. While there have been several studies conducted in the region, we know surprisingly little about the mechanism of connection between these two rift branches. Here we use high-resolution 3D lithospheric scale geodynamic modeling to capture the evolution of linkage between the RS and GoA rifts in central Afar. Our results demonstrate that the two rifts initially overlap and interact across a broad zone of faulting and vertical axis block rotation. However, through time, rift overlap is abandoned in favor of direct linkage which generates a series of localized en-echelon basins. The present-day direct linkage between the two rifts is supported by geodetic observations. Our study reconciles previously proposed models for the RS and GoA rift connection by considering spatial and temporal evolution of the rifts.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 13
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    A laboratory study on fault slip caused by fluid injection directly versus indirectly into a fault: implications for induced seismicity in EGSs (2024)
    In:  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Details
    Publication Date: 2024-07-08
    Description: Enhanced geothermal systems (EGSs) developed by hydraulic stimulation are promising for exploiting petrothermal heat by improving fluid pathways in low-permeable geothermal reservoir rocks. However, fluid injection into the subsurface can potentially cause large seismic events by reactivating pre-existing faults, which is a significant barrier to EGSs. The management of injection-induced seismicity is, therefore, essential for the success of EGSs. During the hydraulic stimulation of an EGS, fluid can be injected into a fault zone or into the rock matrix containing pre-existing faults adjacent to the injection well. The differences in hydromechanical responses between fluid injection into and adjacent to a fault have not been investigated in detail. Here, we performed triaxial fluid injection experiments involving injecting fluid directly and indirectly into a fault in granite rock samples to analyse the distinct hydromechanical responses and estimate the injection-induced seismicity in both cases. Our results suggest that in addition to directly injecting fluid into a critically stressed fault, injecting into nearly intact granite adjacent to the fault could also cause injection-induced seismic hazards owing to the high fluid pressure required to create new fractures in the granite matrix. It is, therefore, important to carefully identify pre-existing faults within tight reservoirs to avoid injecting fluid adjacent to them. Additionally, once prior unknown faults are delineated during hydraulic stimulation, appropriate shut-in strategies should be implemented immediately to mitigate seismic risks.
    Language: English
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  • 14
    Series available for loan
    Series available for loan
    Volcanic island : from hazard assessment to risk mitigation (2024)
    London : The Geological Society
    Associated volumes
    Details Availability
    Call number: 9/M 07.0421(519)
    In: Geological Society special publication, 519
    Description / Table of Contents: Volcanic islands have a highly characteristic geological context that poses specific issues related to thereconstruction of volcanic activity, hazard assessment, risk management, implementation of monitoringnetworks, and non-eruptive geohazards as landslides. This special publication intends to address theseissues from a multidisciplinary point of view.
    Type of Medium: Series available for loan
    Pages: 170 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9781786205650 , 978-1-78620-565-0
    ISSN: 03058719 , 0305-8719
    Series Statement: Geological Society special publication 519
    URL: https://www.lyellcollection.org/cms/asset/df2524c0-fa12-466e-8f49-5b5f7346c414/sp.519.issue-1.toc.pdf
    URL: https://doi.org/10.1144/sp519
    Language: English
    Note: Griffiths, J. S. and Law, R. D. Introduction to SP519 – volcanic islands: from hazard assessment to risk mitigation Multidisciplinary approaches to understanding volcanic islands Della Seta, M., Esposito, C., Fiorucci, M., Marmoni, G. M., Martino, S., Sottili, G., Belviso, P., Carandente, A., de Vita, S., Marotta, E. and Peluso, R. Thermal monitoring to infer possible interactions between shallow hydrothermal system and slope-scale gravitational deformation of Mt Epomeo (Ischia Island, Italy) Marotta, E., Berrino, G., de Vita, S., Di Vito, M. and Camacho, A. G. Structural setting of the Ischia resurgent caldera (southern Tyrrhenian Sea, Italy) by integrated 3D gravity inversion and geological models Tramelli, A., Orazi, M., Nardone, L., Bobbio, A., Benincasa, A., Buonocunto, C., Capello, M., Caputo, A., Castellano, M., D’Auria, L., De Cesare, W., Di Filippo, A., Galluzzo, D., Gaudiosi, G., Giudicepietro, F., Liguoro, F., Lo Bascio, D., Martini, M., Martino, C., Peluso, R., Ricciolino, P., Scarpato, G., Torello, V. and Bianco, F. The seismic network of Ischia island from 1993 to 2021 Longo, M., Lazzaro, G., Caruso, C. G., Corbo, A., Sciré Scappuzzo, S., Italiano, F., Gattuso, A. and Romano, D. Hydro-acoustic signals from the Panarea shallow hydrothermal field: new inferences of a direct link with Stromboli Musacchio, M., Silvestri, M., Rabuffi, F., Buongiorno, M. F. and Falcone, S. Kılauea ̄ –Leilani 2018 lava flow delineation using Sentinel2 and Landsat8 images Tsunamis from volcanic environments Zaniboni, F., Pagnoni, G., Gallotti, G., Tinti, S. and Armigliato, A. Landslide-tsunamis along the flanks of Mount Epomeo, Ischia: propagation patterns and coastal hazard for the Campania Coasts, Italy Fornaciai, A., Favalli, M. and Nannipieri, L. Reconstruction of the 2002 tsunami at Stromboli using the non-hydrostatic WAVE model (NHWAVE) Volcanoes and society Lotteri, A., Speake, J., Kennedy, V., Wallenstein, N., Coutinho, R., Chester, D., Duncan, A., Dibben, C. and Ferreira, F. Changing hazard awareness over two decades: the case of Furnas, São Miguel (Azores) Tomasone, M., Avvisati, G., Cirillo, F., Colucci, O., Marotta, E., Fiorenza, E., Vertechi, E. and Simonetti, B. Risk management planning on a volcanic island: fear and loathing in Ischia (Italy) Index
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  • 15
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    Toward global net zero : the voluntary carbon market on its quest to find its place in the post-Paris climate regime (2024)
    Details
    Publication Date: 2024-07-03
    Description: This focus article traces the evolution of the voluntary carbon market (VCM), putting emphasis on the more recent developments following the adoption of the Paris Agreement in 2015. It focuses on the interplay between the privately governed VCM and the global climate regime under the United Nations (UN). For years, the VCM and the UN carbon market operated in parallel and mutually influenced each other. The adoption of the Paris Agreement, however, marked a turning point for the VCM. It triggered the proliferation of net zero targets, sparking the interest in the VCM as a supplier of carbon credits to offset companies' remaining emissions. At the same time, the global scope and ambitious targets set by the agreement have put the future of the VCM in limbo, raising concerns about double claiming and more generally, questioning the adequacy of offsetting. Considering these challenges, numerous stakeholders have started a process to redefine the rules of the market to ensure its credibility and legitimacy. While some areas of convergence were identified, the VCM's private governance has long been unable to address the question of how to deal with double claiming and the claims companies should be allowed to make. In this situation, signals from international policy and regulation under national policy point the way forward for the VCM. By moving from offsetting toward a contribution claim model, the VCM may overcome its "identity crisis" and find a new place within the broader climate change regime.
    Keywords: ddc:320
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
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  • 16
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    Support to the technical and political phase of the first Global Stocktake under the Paris Agreement : final report (2024)
    Dessau-Roßlau : Umweltbundesamt
    Details
    Publication Date: 2024-07-03
    Keywords: ddc:320
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: report , doc-type:report
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  • 17
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    Genre - transports - climat : les étapes d'une transformation (2024)
    Details
    Publication Date: 2024-07-03
    Keywords: ddc:380
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: French
    Type: contributiontoperiodical , doc-type:contributionToPeriodical
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  • 18
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    Local super apps in the 15-minute city : a new model for sustainable smart cities? (2024)
    Details
    Publication Date: 2024-07-03
    Description: In this perspective paper, we propose to integrate the concepts of Mobility-as-a-Feature (MaaF, an extension of MaaS) and the 15-minute city (15mC). The 15mC concept maintains that daily necessities and services, such as shopping, healthcare, and leisure should be accessible without private cars within 15 minute. In line with MaaF, these services could be integrated with a variety of mobility options into a single app. This novel approach is poised to offer a seamless customer experience, better resource utilization, enhanced urban mobility, improved and more inclusive access to services, and greater community connectivity. We call them local super apps: a new model to drive equitable and sustainable urban transitions. We substantiate this preliminary idea with evidence from literature, practical applications, and a user survey (N = 1,019), while also discussing future research avenues to further develop the concept of local super apps.
    Keywords: ddc:380
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
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  • 19
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    An environmental assessment framework for circular steel products (2024)
    Details
    Publication Date: 2024-07-03
    Description: The implementation of the circular economy is crucial to combat climate change especially in energy- and carbon-intensive sectors like the steel industry. It requires the environmental assessment of circular interventions to steel products to ensure that they are in line with targets of the circular economy - increase of resource efficiency and sustainability. Based on previous case studies and established methodologies, an environmental assessment framework is suggested and applied. It comprises a Material Flow Analysis to quantify selected mass-based indicators to evaluate the parameters of circular economy, as well as a Life Cycle Assessment to quantify the difference of the environmental impact. The application to a case study in the metalworking industries shows that the implementation of repurposing to a machining knife and hand tools contributes to all circular economy strategies - narrowing, slowing, and closing. At first, however, the circular intervention did not lead to a reduction of the environmental impact. It was found that the optimization of share of secondary material, energy mix, grinding, and transportation can lower the environmental impact of the circular compared to the conventional product system. Considering the increased product functionality, the environmental performance of the circular product system is superior. The study shows the importance of integrating assessment methods covering the resource level and environmental sustainability since focusing only on the resource efficiency can be misleading. At the same time, it stresses the need to apply environmental assessments in the product development stage to design environmentally sustainable and resource-efficient product systems.
    Keywords: ddc:600
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: article , doc-type:article
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  • 20
    Monograph available for loan
    Monograph available for loan
    X Hotine-Marussi Symposium on Mathematical Geodesy : Proceedings of the Symposium in Milan, Italy, June 13-17 2022 (2024)
    Cham : Springer
    Associated volumes
    Details Availability
    Call number: 6/M 24.95762
    In: International Association of Geodesy Symposia, 155
    Description / Table of Contents: Intro -- Preface -- Contents -- Part I Gravity Field Modelling and Height Systems -- Remarks on the Terrain Correction and the Geoid Bias -- 1 Introduction -- 2 The Terrain Correction for Masses Located in the Remote Zone of the Bouguer Shell -- 3 The Terrain Correction for Masses Located Outside the Bouguer Plate -- 4 The Terrain Correction Due to Masses in the Near-Zone Inside the Bouguer Plate -- 5 Conclusions -- References -- Why a Height Theory Must Be Rigorous and Physically Correct -- 1 Review -- 2 Problems with Molodensky's Approach -- 3 Arrival of Satellites and the Problem of Height Congruency -- 4 Conclusions -- References -- Geodetic Heights and Holonomity -- 1 Introduction -- 2 What Is a Geodetic Heigh? -- 2.1 A New Definition of a General Geodetic Height HG -- 3 The Four Height Systems Are Geodetic Heights -- 4 Holonomity of the Geodetic Heights -- 5 Comparisons and Conclusions -- References -- Physical Heights of Inland Lakes -- 1 Introduction -- 2 Orthometric Height -- 3 Orthometric Height Variation at Lake Surface -- 4 Quantification: Case Studies -- 4.1 Lake Vänern, Sweden -- 4.2 Lake Michigan, USA -- 4.3 Issyk Kul, Kyrgyzstan -- 4.4 Salar de Uyuni, Bolivia -- 5 Conclusions and Outlook -- Appendix 1: Approximation -- Appendix 2: Normal Height Variation -- References -- The Uncertainties of the Topographical Density Variations in View of a Sub-Centimetre Geoid -- 1 Introduction -- 2 Theory -- 3 Numerical Results -- 4 Conclusion and Remarks -- References -- Estimation of Height Anomalies from Gradients of the Gravitational Potential Using a Spectral Combination Method -- 1 Introduction -- 2 Spectral Combination -- 3 Numerical Experiments -- 4 Conclusion -- References -- Evaluation of the Recent African Gravity Databases V2.x -- 1 Introduction -- 2 Data Used for Establishing the AFRGDB_V2.x Gravity Databases.
    Type of Medium: Monograph available for loan
    Pages: 189 Seiten , Illustrationen
    Edition: 1st ed.
    ISBN: 9783031553592
    Series Statement: International Association of Geodesy Symposia Series 155
    Language: English
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