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  • Articles  (18,407)
  • Data  (170)
  • Other Sources  (6,283)
  • English  (24,860)
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  • Books  (73,143)
  • Articles  (18,407)
  • Data  (170)
  • Maps  (83)
  • Other Sources  (6,283)
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  • 1
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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
    Type: article , doc-type:article
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  • 2
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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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  • 3
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    Local super apps in the 15-minute city : a new model for sustainable smart cities? (2024)
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    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
    Type: article , doc-type:article
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  • 4
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    An environmental assessment framework for circular steel products (2024)
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    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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  • 5
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    Fatigue hydraulic fracturing: Concept and application in hard rock (2019)
    In:  Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers : Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering (ISRM 2019), September 13-18, 2019, Foz Do Iguassu, Brazil | Proceedings in Earth and geosciences ; 6
    Details
    Publication Date: 2024-07-02
    Language: English
    Type: info:eu-repo/semantics/bookPart
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  • 6
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    A generalized slip-rate function for kinematic modeling (2020)
    In:  Abstracts
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    Publication Date: 2024-07-02
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 7
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    Strong-motion on DAS: Insights from the 2022 MW 6.9 Chishang earthquake (Southern Taiwan) (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2024-07-02
    Description: Distributed acoustic sensing (DAS) sees increased utilization in the seismological community in recent years and various applications are investigated for the usage of DAS in different branches of seismology. Strong-motion seismology uses records of earthquakes of engineering concern (MW〉4.5) with hypocentral distances within few hundreds of kilometers. This demands dense networks over a wide area and installation of typical strong-motion instruments (accelerometers) can be achieved quickly and at a reasonable budget, compared to other network types. For DAS, installation and operation are more involved, and deployment is very still limited. Consequently, DAS recordings of nearby large events are still very unlikely and rare compared to accelerometers. On September 18, 2022, a shallow earthquake sequence with a M〈sub〉W〈/sub〉 6.9 mainshock struck near Chishang (Taiwan) and was recorded by DAS in Hualien city, appr. 100 km north. Shaking of the mainshock and several aftershocks were noticeable in Hualien, though not damaging with PGA recorded at 0.28 m/s^2 nearby the DAS site. The DAS campaign was originally conceptualized as a test suite with different fiber installations: including buried, within a gutter (as in commercial fiber installation) and loose within a basement. The test site is in an urban area affected by surface rupturing during the 2018 Hualien earthquake. The presented recordings provide not only an unprecedented insight how strong-motion appears on DAS but also how effective different installation techniques are for this kind of event. The waveforms are also compared to records of a collocated broadband seismometer and an accelerometer 1 km away.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 8
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    Investigating dynamic range of Distributed Acoustic Sensing and introducing a neural-network-based detection for saturation effects (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2024-07-02
    Description: Distributed Acoustic Sensing (DAS) is used to record high-spatial resolution strain-rate data. For ground motion observation, the DAS data can be converted from strain rate to acceleration or velocity by array-based measurements with coherent plane waves. DAS provides an opportunity to map high-resolution shaking patterns near faults. We installed collocated geophones and optical fiber in Hualien City (a very seismically active area in Taiwan) from the end of January to the end of February in 2022. Earthquakes with magnitudes (Mw) between 3.2 and 5.4 have been recorded. These records illustrate the typical magnitude-distance dependence of ground-motion but also show saturation for higher magnitudes and/or at shorter distances (e.g for an earthquake of Mw 5.2 earthquake recorded at 100 km). For frequency-based analyses, clipped signals on DAS result in challenges not present in classical instruments (seismometers). The upper limit in dynamic range of seismometers results in easily identifiable trapezoidal signals. The dynamic range of DAS interrogators is limited by gauge length, sampling frequency, and wrapped phase in the interferometric phase demodulation. We observe that clipped DAS signals not only affect time series but also contaminate their spectra on all frequencies, due to the random nature of clipping in DAS—contrasting to the flat plateaus in clipped time series on seismometers. Therefore, the identification of the start and end points of clipped DAS records poses a major challenge, which we aim to resolve with a neural network. This approach enhances the efficiency for quality control of massive DAS datasets.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 9
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    Utilization of crowdsourced macroseismic observations to distinguish “high-impact” from “low-impact” earthquakes globally within minutes of an event (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2024-07-02
    Description: Rapid assessment of an earthquake’s impact on the affected society is a crucial first step of disaster management, determining further emergency measures. We demonstrate that macroseismic observations, collected as felt reports via the LastQuake service of the European Mediterranean Seismological Center, can be utilized to estimate the probability of a felt earthquake to have a “high impact” rather than a “low impact” on the affected population on a global scale. In our fully data-driven, transparent, and reproducible approach we compare the distribution of felt reports to documented earthquake impact in terms of economic losses, number of fatalities, and number of damaged or destroyed buildings. Using the distribution of felt-reports as predictive parameters and an impact measure as the target parameter, we infer a probabilistic model utilizing Bayes’ theorem and Kernel Density Estimation, that provides the probability of an earthquake to be “high impact”. For 393 felt events in 2021, a sufficient number of felt reports to run the model is collected within 10 minutes after the earthquake. While a clean separation of “high-impact” and “low-impact” events remains a challenging task, unambiguous identification of many “low-impact” events in our dataset is identified as a key strength of our approach. We consider our method a complementary and inexpensive impact assessment tools, that can be utilized instantly in all populated areas on the planet, with the necessary technological infrastructure. Being fully independent of seismic data, our framework poses an affordable option to support disaster management in regions that currently lack expensive seismic instrumentation.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 10
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    Erratum to Ground‐Motion Modeling as an Image Processing Task: Introducing a Neural Network Based, Fully Data‐Driven, and Nonergodic Approach (2022)
    In:  Bulletin of the Seismological Society of America
    Details
    Publication Date: 2024-07-02
    Language: English
    Type: info:eu-repo/semantics/article
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