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  • English  (11,665)
  • French  (3,120)
  • 2020-2024  (14,757)
  • 1990-1994  (5)
  • 1980-1984  (4)
  • 1960-1964  (2)
  • 2022  (14,757)
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  • 1
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    Deep Dive Hydrogen Economy – A Radical Alternative (2022)
    Foresight on Demand
    Details
    Publication Date: 2024-07-08
    Description: Key message: A decolonial approach is needed to fulfil IASC’s commitment to recognizing that Traditional Knowledge, Indigenous Knowledge and academic scientific knowledge are co-equal and complementary knowledge systems that all can and should inform its work (website ICARP IV, retrieved October 2023). This document summarizes key recommendations for actions regarding five themes: 1. Indigenous Peoples’ right to self-determination as a prerequisite for high-quality Arctic research 2. Ethics, methods and methodology as key for decolonial research 3. Indigenous-led research in design and practice 4. Indigenous Peoples’ co-equal participation in Arctic research funding structures and decision-making for securing decolonial Arctic research in practice 5. Funding for Co-Creative and Indigenous-Led Arctic Research
    Language: English
    Type: info:eu-repo/semantics/report
    Format: application/pdf
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  • 2
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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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  • 3
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    Stress Map of Taiwan 2022 (2022)
    GFZ Data Services
    Details
    Publication Date: 2024-07-02
    Description: Stress maps show the orientation of the current maximum horizontal stress (SHmax) in the earth's crust. Assuming that the vertical stress (SV) is a principal stress, SHmax defines the orientation of the 3D stress tensor; the minimum horizontal stress Shmin is than perpendicular to SHmax. In stress maps SHmax orientations are represented as lines of different lengths. The length of the line is a measure of the quality of data and the symbol shows the stress indicator and the color the stress regime. The stress data are freely available and part of the World Stress Map (WSM) project. For more information about the data and criteria of data analysis and quality mapping are plotted along the WSM website at http://www.world-stress-map.org. The stress map of Taiwan 2022 is based on the WSM database release 2016. However, all data records have been checked and we added a large number of new data from earthquake focal mechanisms from the national earthquake catalog and from publications. The total number of data records has increased from n=401 in the WSM 2016 to n=6,498 (4,234 with A-C quality) in the stress map of Taiwan 2022 The update with earthquake focal mechanims is even larger since another 1313 earthquake focal mechanism data records beyond the scale of this map have been added to the WSM database. The digital version of the stress map is a layered pdf file generated with GMT (Wessel et al., 2019). It also provide estimates of the mean SHmax orientation on a regular 0.1° grid using the tool stress2grid (Ziegler and Heidbach, 2019). Two mean SHmax orientations are estimated with search radii of r=25 and 50 km, respectively, and with weights according to distance and data quality. The stress map and data are available on the landing page at https://doi.org/10.5880/WSM.Taiwan2022 where further information is provided. The earthquake focal mechanism that are used for this stress map are provided by the Taiwan Earthquake Research Center (TEC) available at the TEC Data Center (https://tec.earth.sinica.edu.tw).
    Language: English
    Type: info:eu-repo/semantics/workingPaper
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  • 4
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    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
    Description: We construct and examine the prototype of a deep learning-based ground-motion model (GMM) that is both fully data driven and nonergodic. We formulate ground-motion modeling as an image processing task, in which a specific type of neural network, the U-Net, relates continuous, horizontal maps of earthquake predictive parameters to sparse observations of a ground-motion intensity measure (IM). The processing of map-shaped data allows the natural incorporation of absolute earthquake source and observation site coordinates, and is, therefore, well suited to include site-, source-, and path-specific amplification effects in a nonergodic GMM. Data-driven interpolation of the IM between observation points is an inherent feature of the U-Net and requires no a priori assumptions. We evaluate our model using both a synthetic dataset and a subset of observations from the KiK-net strong motion network in the Kanto basin in Japan. We find that the U-Net model is capable of learning the magnitude–distance scaling, as well as site-, source-, and path-specific amplification effects from a strong motion dataset. The interpolation scheme is evaluated using a fivefold cross validation and is found to provide on average unbiased predictions. The magnitude–distance scaling as well as the site amplification of response spectral acceleration at a period of 1 s obtained for the Kanto basin are comparable to previous regional studies.
    Language: English
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 5
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    Within- and Between-Event Variabilities of Strong-Velocity Pulses of Moderate Earthquakes within Dense Seismic Arrays (2022)
    In:  Bulletin of the Seismological Society of America
    Details
    Publication Date: 2024-07-01
    Description: Ground motion with strong‐velocity pulses can cause significant damage to buildings and structures at certain periods; hence, knowing the period and velocity amplitude of such pulses is critical for earthquake structural engineering. However, the physical factors relating the scaling of pulse periods with magnitude are poorly understood. In this study, we investigate moderate but damaging earthquakes (⁠Mw 6–7) and characterize ground‐motion pulses using the method of Shahi and Baker (2014) while considering the potential static‐offset effects. We confirm that the within‐event variability of the pulses is large. The identified pulses in this study are mostly from strike‐slip‐like earthquakes. We further perform simulations using the frequency–wavenumber algorithm to investigate the causes of the variability of the pulse periods within and between events for moderate strike‐slip earthquakes. We test the effect of fault dips, and the impact of the asperity locations and sizes. The simulations reveal that the asperity properties have a high impact on the pulse periods and amplitudes at nearby stations. Our results emphasize the importance of asperity characteristics, in addition to earthquake magnitudes for the occurrence and properties of pulses produced by the forward directivity effect. We finally quantify and discuss within‐ and between‐event variabilities of pulse properties at short distances.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 6
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    From regime‐building to implementation: Harnessing the UN climate conferences to drive climate action (2022)
    In:  Wiley Interdisciplinary Reviews - Climate Change
    Details
    Publication Date: 2024-06-19
    Description: The gap between the internationally agreed climate objectives and tangible emissions reductions looms large. We explore how the supreme decision-making body of the United Nations Framework Convention on Climate Change (UNFCCC), the Conference of the Parties (COP), could develop to promote more effective climate policy. We argue that promoting implementation of climate action could benefit from focusing more on individual sectoral systems, particularly for mitigation. We consider five key governance functions of international institutions to discuss how the COP and the sessions it convenes could advance implementation of the Paris Agreement: guidance and signal, rules and standards, transparency and accountability, means of implementation, and knowledge and learning. In addition, we consider the role of the COP and its sessions as mega-events of global climate policy. We identify opportunities for promoting sectoral climate action across all five governance functions and for both the COP as a formal body and the COP sessions as conducive events. Harnessing these opportunities would require stronger involvement of national ministries in addition to the ministries of foreign affairs and environment that traditionally run the COP process, as well as stronger involvement of non-Party stakeholders within formal COP processes. This article is categorized under: Policy and Governance 〉 International Policy Framework
    Language: English
    Type: info:eu-repo/semantics/article
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  • 7
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    Sustainable lifestyles: towards a relational approach (2022)
    In:  Sustainability science
    Details
    Publication Date: 2024-06-19
    Description: The concept of sustainable lifestyles is said to have reached the limits of its usefulness. As commonly understood, it impedes an effective response to our increasingly complex world, and the associated societal challenges. In this context, the emerging paradigm of relationality might offer a way forward to renew our current understanding and approach. We explore this possibility in this study. First, we systematize if, and how, the current dominant social paradigm represents a barrier to sustainable lifestyles. Second, we analyze how a relational approach could help to overcome these barriers. On the basis of our findings, we develop a Relational Lifestyle Framework (RLF). Our aim is to advance the current knowledge by illustrating how sustainable lifestyles are a manifestation of identified patterns of thinking, being, and acting that are embedded in today’s “socioecological” realities. The RLF revitalizes the field of sustainable lifestyle change, as it offers a new understanding for further reflection, and provides new directions for policy and transformation research.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 8
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    The role of transdisciplinarity for mineral economics and mineral resource management: coping with fallacies related to phosphorus in science and practice (2022)
    In:  Mineral economics : raw materials report
    Details
    Publication Date: 2024-06-19
    Description: Mineral economics is a genuine multidisciplinary field dealing with economic and policy matters related to the production, distribution, and consumption of mineral commodities. We discuss why the increasing complexity, ambiguity, ambivalence, and social contestation of subjects of mineral economics promote the participation of mineral economists in transdisciplinary processes. These processes relate (a) knowledge from targeted interdisciplinary processes and (b) mitigated discourses among different stakeholders to provide (c) a shared problem definition and to attain shared basic knowledge about problem transformation science and practice. We discuss known examples of misperceptions regarding minerals (phosphorus), such as an imminent scarcity threat, the incorrectly understood causations of the 2007/2008 price peak and present the phosphorus ore-grades increased by 3.2% between 1983 and 2013 fallacies (which is based on the Simpson’s paradox), and only few countries have mineable reserves fallacy. Here, we also illuminate motivations underlying several mineral economics–related misunderstandings. We argue that societally relevant questions require an honest mineral economics knowledge brokership. The example of the Global TraPs project, which targeted sustainable phosphorus management, is presented. Honest brokership to attain a clearinghouse function of science requires trust formation in society. We argue that this calls for increasing the understandability of relationships that are not well-understood, such as “if prices rise, so do stocks.” Wellmer and Becker-Platen’s feedback control cycle may be considered an example of how complex mineral economics can become and how challenging it is to be understandable to scientists from different disciplines and faculties as well as to practitioners whose knowledge may well be used to cope with the complexity of given problems. Thus, the present paper represents a plea for mutual learning between science and practice in order to understand the complex social and economic challenges of mineral resource dynamics.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 9
    Monograph available for loan
    Monograph available for loan
    Introduction to modern climate change (2022)
    Cambridge : Cambridge University Press
    Details Availability
    Call number: PIK 24-95731
    Type of Medium: Monograph available for loan
    Pages: xviii, 270 Seiten , Illustrationen, Diagramme, Karten , 25 cm
    Edition: Third edition
    ISBN: 9781108793872 , 9781108840187
    URL: Inhaltsverzeichnis
    DOI: 10.1017/9781108879125
    Language: English
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 10
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    Future tree survival in European forests depends on understorey tree diversity (2022)
    In:  Scientific Reports
    Details
    Publication Date: 2024-05-31
    Description: Climate change heavily threatens forest ecosystems worldwide and there is urgent need to understand what controls tree survival and forests stability. There is evidence that biodiversity can enhance ecosystem stability (Loreau and de Mazancourt in Ecol Lett 16:106–115, 2013; McCann in Nature 405:228–233, 2000), however it remains largely unclear whether this also holds for climate change and what aspects of biodiversity might be most important. Here we apply machine learning to outputs of a flexible-trait Dynamic Global Vegetation Model to unravel the effects of enhanced functional tree trait diversity and its sub-components on climate-change resistance of temperate forests (http://www.pik-potsdam.de/~billing/video/Forest_Resistance_LPJmLFIT.mp4). We find that functional tree trait diversity enhances forest resistance. We explain this with 1. stronger complementarity effects (~ 25% importance) especially improving the survival of trees in the understorey of up to + 16.8% (± 1.6%) and 2. environmental and competitive filtering of trees better adapted to future climate (40–87% importance). We conclude that forests containing functionally diverse trees better resist and adapt to future conditions. In this context, we especially highlight the role of functionally diverse understorey trees as they provide the fundament for better survival of young trees and filtering of resistant tree individuals in the future.
    Language: English
    Type: info:eu-repo/semantics/article
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