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  • English  (11,663)
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  • 2020-2024  (13,288)
  • 2022  (13,288)
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  • 1
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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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  • 2
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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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  • 3
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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
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  • 4
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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
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  • 5
    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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  • 6
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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
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  • 7
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    Global crop yields can be lifted by timely adaptation of growing periods to climate change (2022)
    In:  Nature Communications
    Details
    Publication Date: 2024-05-31
    Description: Adaptive management of crop growing periods by adjusting sowing dates and cultivars is one of the central aspects of crop production systems, tightly connected to local climate. However, it is so far underrepresented in crop-model based assessments of yields under climate change. In this study, we integrate models of farmers’ decision making with biophysical crop modeling at the global scale to simulate crop calendars adaptation and its effect on crop yields of maize, rice, sorghum, soybean and wheat. We simulate crop growing periods and yields (1986-2099) under counterfactual management scenarios assuming no adaptation, timely adaptation or delayed adaptation of sowing dates and cultivars. We then compare the counterfactual growing periods and corresponding yields at the end of the century (2080-2099). We find that (i) with adaptation, temperature-driven sowing dates (typical at latitudes 〉30°N-S) will have larger shifts than precipitation-driven sowing dates (at latitudes 〈30°N-S); (ii) later-maturing cultivars will be needed, particularly at higher latitudes; (iii) timely adaptation of growing periods would increase actual crop yields by ~12%, reducing climate change negative impacts and enhancing the positive CO2 fertilization effect. Despite remaining uncertainties, crop growing periods adaptation require consideration in climate change impact assessments.
    Language: English
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  • 8
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    LivWell: a sub-national Dataset on the Living Conditions of Women and their Well-being for 52 Countries (2022)
    In:  Scientific Data
    Details
    Publication Date: 2024-05-31
    Description: Data on women’s living conditions and socio-economic development are important for understanding and addressing the pronounced challenges and inequalities faced by women worldwide. While such information is increasingly available at the national level, comparable data at the sub-national level are missing. We here present the LivWell global longitudinal dataset, which includes a set of key indicators on women’s socio-economic status, health and well-being, access to basic services and demographic outcomes. It covers 447 regions in 52 countries and includes a total of 265 different indicators. The majority of these are based on 199 Demographic and Health Surveys (DHS) for the period 1990–2019 and are complemented by extensive information on socio-economic and climatic conditions in the respective regions. The resulting dataset offers various opportunities for policy-relevant research on gender inequality, inclusive development and demographic trends at the sub-national level.
    Language: English
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  • 9
    Monograph available for loan
    Monograph available for loan
    Plate tectonics : continental drift and mountain building (2022)
    Cham : Springer International Publishing | Cham : Springer
    Details Availability
    Call number: M 24.95738
    Description / Table of Contents: 1. Contractional theory, continental drift and plate tectonics -- 2 Plate movements and their geometric relationships -- 3. Continental graben structures -- 4. Passive continental margins and abyssal plains -- 5. Mid-ocean ridges -- 6. Hot spots -- 7. Subduction zones, island arcs and active continental margins -- 8. Transform faults -- 9. Terranes -- 10. Early Precambrian plate tectonics -- 11. Plate tectonics and mountain building -- 12. Old orogens -- 13. Young orogens - the Earth's loftiest places.
    Description / Table of Contents: This textbook explains how mountains are formed and why there are old and young mountains. It provides a reconstruction of the Earths paleogeography and shows why the shapes of South America and Africa fit so well together. Furthermore, it explains why the Pacific is surrounded by a ring of volcanos and earthquake-prone areas while the edges of the Atlantic are relatively peaceful. This thoroughly revised textbook edition addresses all these questions and more through the presentation and explanation of the geodynamic processes upon which the theory of continental drift is based and which have led to the concept of plate tectonics. It is a source of information for students of geology, geophysics, geography, geosciences in general, general natural sciences, as well as professionals, and interested layman.
    Type of Medium: Monograph available for loan
    Pages: X, 245 Seiten , Illustrationen
    Edition: 2nd ed. 2022.
    ISBN: 978-3-030-88998-2 , 978-3-030-89000-1 , 978-3-030-89001-8
    Series Statement: Springer Textbooks in Earth Sciences, Geography and Environment
    Language: English
    Location: 19
    Branch Library: GFZ Library
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  • 10
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    The Expander: Growing fault networks under pure shear conditions (2022)
    In:  Abstracts
    Details
    Publication Date: 2024-05-22
    Description: The growth of faults is well studied with field methods, experiments and theoretical models. Fault evolution is largely established from a geometrical and kinematic point of view with respect to the growth of isolated faults and their mutual interaction. However, the dynamics of fault growth (e.g. stress shadowing, damage zone evolution, energy budgets) and the emergence of interactions over various spatial and temporal scales in larger fault networks is a topic of recent interest less illuminated so far. We here introduce a new experimental setup allowing to study “large-n” fault networks evolving in crustal-scale brittle and brittle-ductile analogue models. We document preliminary results helping to demonstrate and verify the capability of the approach. The setup, called “The Expander”, builds on a traditional extensional setup with a basal rubber sheet expanded in one direction. The aspect ratio of the rubber sheet controls its lateral contraction (“Poisson’s effect”) and thus the bulk strain ratio under pure shear conditions. We can thus realize constrictional (prolate) to plane to flattening (oblate) kinematic basal boundary conditions depending on the sheet’s aspect ratio and whether we expand or relax the sheet. Evolving fault networks vary from anastomosing fold-and-thrust belts to conjugate sets of strike-slip fault networks to quasi-parallel normal fault populations, respectively. We apply digital image correlation (DIC) to track the kinematic surface evolution and photogrammetry (structure from motion, SFM) for topography evolution. First observations suggest that strike-slip fault networks in a purely brittle crust under basal pure shear conditions evolve into compartments of synthetic faults, the size of which scale with brittle layer thickness similar to fault spacing. The scaling seems to be controlled by slip partitioned onto the individual faults and mediated by stress shadows. Numerical simulation of the experiment suggests that the compartmentalization might evolve further through sequential de-activation of smaller faults and collapse of deformation into a single regional scale master fault with or without prescribing a zone of crustal weakness (a “seed”). Further experiments are planned to test the fault pattern evolution for different mechanical stratigraphy (brittle-viscous layers, seeds) and kinematic boundary conditions.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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