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  • 1
    Dissertations
    Dissertations
    Outburst floods from moraine-dammed lakes in the Himalayas : detection, frequency, and hazard (2019)
    Potsdam
    Details
    Call number: M 20.93497
    Description / Table of Contents: The Himalayas are a region that is most dependent, but also frequently prone to hazards from changing meltwater resources. This mountain belt hosts the highest mountain peaks on earth, has the largest reserve of ice outside the polar regions, and is home to a rapidly growing population in recent decades. One source of hazard has attracted scientific research in particular in the past two decades: glacial lake outburst floods (GLOFs) occurred rarely, but mostly with fatal and catastrophic consequences for downstream communities and infrastructure. Such GLOFs can suddenly release several million cubic meters of water from naturally impounded meltwater lakes. Glacial lakes have grown in number and size by ongoing glacial mass losses in the Himalayas. Theory holds that enhanced meltwater production may increase GLOF frequency, but has never been tested so far. The key challenge to test this notion are the high altitudes of 〉4000 m, at which lakes occur, making field work impractical. Moreover, flood waves can attenuate rapidly in mountain channels downstream, so that many GLOFs have likely gone unnoticed in past decades. Our knowledge on GLOFs is hence likely biased towards larger, destructive cases, which challenges a detailed quantification of their frequency and their response to atmospheric warming. Robustly quantifying the magnitude and frequency of GLOFs is essential for risk assessment and management along mountain rivers, not least to implement their return periods in building design codes. [...]
    Type of Medium: Dissertations
    Pages: 122 Seiten , Illustrationen, Diagramme
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-436071
    URN: urn:nbn:de:kobv:517-opus4-436071
    DOI: 10.25932/publishup-43607
    Language: English
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  • 2
    Dissertations
    Dissertations
    Causes for slow weathering and erosion in the steep, warm, monsoon-subjected Highlands of Sri Lanka (2018)
    Potsdam
    Details
    Call number: M 20.93506
    Description / Table of Contents: In the Highlands of Sri Lanka, erosion and chemical weathering rates are among the lowest for global mountain denudation. In this tropical humid setting, highly weathered deep saprolite profiles have developed from high-grade metamorphic charnockite during spheroidal weathering of the bedrock. The spheroidal weathering produces rounded corestones and spalled rindlets at the rock-saprolite interface. I used detailed textural, mineralogical, chemical, and electron-microscopic (SEM, FIB, TEM) analyses to identify the factors limiting the rate of weathering front advance in the profile, the sequence of weathering reactions, and the underlying mechanisms. The first mineral attacked by weathering was found to be pyroxene initiated by in situ Fe oxidation, followed by in situ biotite oxidation. Bulk dissolution of the primary minerals is best described with a dissolution – re-precipitation process, as no chemical gradients towards the mineral surface and sharp structural boundaries are observed at the nm scale. Only the local oxidation in pyroxene and biotite is better described with an ion by ion process. The first secondary phases are oxides and amorphous precipitates from which secondary minerals (mainly smectite and kaolinite) form. Only for biotite direct solid state transformation to kaolinite is likely. [...]
    Type of Medium: Dissertations
    Pages: ix, 107, XXIV Seiten , Illustrationen, Diagramme
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408503
    URN: urn:nbn:de:kobv:517-opus4-408503
    Language: English
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  • 3
    Dissertations
    Dissertations
    Hillslope-stream connectivity across scales (2018)
    Potsdam
    Details
    Call number: M 20.93504
    Description / Table of Contents: The concept of hydrologic connectivity summarizes all flow processes that link separate regions of a landscape. As such, it is a central theme in the field of catchment hydrology, with influence on neighboring disciplines such as ecology and geomorphology. It is widely acknowledged to be an important key in understanding the response behavior of a catchment and has at the same time inspired research on internal processes over a broad range of scales. From this process-hydrological point of view, hydrological connectivity is the conceptual framework to link local observations across space and scales. This is the context in which the four studies this thesis comprises of were conducted. The focus was on structures and their spatial organization as important control on preferential subsurface flow. Each experiment covered a part of the conceptualized flow path from hillslopes to the stream: soil profile, hillslope, riparian zone, and stream. For each study site, the most characteristic structures of the investigated domain and scale, such as slope deposits and peat layers were identified based on preliminary or previous investigations or literature reviews. Additionally, further structural data was collected and topographical analyses were carried out. [...]
    Type of Medium: Dissertations
    Pages: xix, 223 Seiten , Illustrationen, Diagramme
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-424542
    URN: urn:nbn:de:kobv:517-opus4-424542
    DOI: 10.25932/publishup-42454
    Language: English
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  • 4
    Dissertations
    Dissertations
    Trends in precipitation over Germany and the Rhine basin related to changes in weather patterns (2017)
    Potsdam
    Details
    Call number: M 20.93499
    Description / Table of Contents: Precipitation as the central meteorological feature for agriculture, water security, and human well-being amongst others, has gained special attention ever since. Lack of precipitation may have devastating effects such as crop failure and water scarcity. Abundance of precipitation, on the other hand, may as well result in hazardous events such as flooding and again crop failure. Thus, great effort has been spent on tracking changes in precipitation and relating them to underlying processes. Particularly in the face of global warming and given the link between temperature and atmospheric water holding capacity, research is needed to understand the effect of climate change on precipitation. The present work aims at understanding past changes in precipitation and other meteorological variables. Trends were detected for various time periods and related to associated changes in large-scale atmospheric circulation. The results derived in this thesis may be used as the foundation for attributing changes in floods to climate change.…
    Type of Medium: Dissertations
    Pages: 112 Seiten , Illustrationen, Diagramme, Karten
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-412725
    URN: urn:nbn:de:kobv:517-opus4-412725
    Language: English
    Note: Contents Summary 1. Introduction 1.1 Background 1.1.1 Precipitation changes 1.1.2 Large-scale atmospheric patterns 1.2 Objectives and research questions 1.3 Thesis outline and author contribution High spatial and temporal organization of changes inprecipitation over Germany for 1951–2006 2.1 Introduction 2.2 Data 2.3 Methods 2.3.1 Threshold between wet and dry days 2.3.2 Derivation of time series of precipitation characteristics 2.3.3 Trend analyses under consideration of temporal and spatial correlation 2.3.4 Visualization of results 2.4 Results and discussion 2.4.1 Changes in total precipitation 2.4.2 Changes in mean, variability, and heavy precipitation indicators 2.4.3 Transition probabilities 2.4.4 Seven-day precipitation amount with return period 100 years 2.5 Conclusions Can local climate variability be explained by weatherpatterns? A multi-station evaluation for the Rhine basin 3.1 Introduction 3.2 Data 3.3 Methods 3.3.1 Weather pattern classification 3.3.2 Finding optimal classification parameters 3.3.3 Evaluation of classifications 3.4 Results 3.4.1 Stratification of local climate variables 3.4.2 Performance of GCMs 3.5 Discussion 3.5.1 On the optimal classification 3.5.2 On the skill of GCMs 3.6 Conclusions 3.7 Data availability 3.A Appendix Do changing weather types explain observed climatictrends in the Rhine basin? An analysis of within andbetween-type changes 4.1 Introduction 4.2 Data and weather pattern classification 4.3 Methods 4.3.1 Relationship of WPs and large-scale circulation modes 4.3.2 Trend detection methods 4.3.3 Relative share of between- and within-type changes 4.4 Results 4.4.1 Attribution of WPs to large-scale circulation modes 4.4. 2Between-Type Changes 4.4.3 Within-Type Changes 4.4.4 Relative share of between- and within-type changes 4.5 Discussion and conclusions 4.A Appendix 4.S Supplementary Discussion and conclusions 5.1 Main results 5.2 Discussion and directions for further research 5.2.1 Weather pattern classification for downscaling 5.2.2 Limitations for downscaling 5.3 Concluding remarks Bibliography
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  • 5
    Dissertations
    Dissertations
    Formation and evolution of channel steps and their role for sediment dynamics in a steep mountain stream (2017)
    Potsdam
    Details
    Call number: M 20.93503
    Description / Table of Contents: Steep mountain channels are an important component of the fluvial system. On geological timescales, they shape mountain belts and counteract tectonic uplift by erosion. Their channels are strongly coupled to hillslopes and they are often the main source of sediment transported downstream to low-gradient rivers and to alluvial fans, where commonly settlements in mountainous areas are located. Hence, mountain streams are the cause for one of the main natural hazards in these regions. Due to climate change and a pronounced populating of mountainous regions the attention given to this threat is even growing. Although quantitative studies on sediment transport have significantly advanced our knowledge on measuring and calibration techniques we still lack studies of the processes within mountain catchments. Studies examining the mechanisms of energy and mass exchange on small temporal and spatial scales in steep streams remain sparse in comparison to low-gradient alluvial channels. In the beginning of this doctoral project, a vast ...
    Type of Medium: Dissertations
    Pages: 180 Seiten , Illustrationen, Karten, Diagramme
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-411728
    URN: urn:nbn:de:kobv:517-opus4-411728
    Language: English
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  • 6
    Dissertations
    Dissertations
    Structure and petrophysical properties of the Southern Chile subduction zone along 38.25°S from seismic data (2017)
    Potsdam
    Details
    Call number: M 20.93505
    Description / Table of Contents: Active and passive source data from two seismic experiments within the interdisciplinary project TIPTEQ (from The Incoming Plate to mega Thrust EarthQuake processes) were used to image and identify the structural and petrophysical properties (such as P- and S-velocities, Poisson's ratios, pore pressure, density and amount of fluids) within the Chilean seismogenic coupling zone at 38.25°S, where in 1960 the largest earthquake ever recorded (Mw 9.5) occurred. Two S-wave velocity models calculated using traveltime and noise tomography techniques were merged with an existing velocity model to obtain a 2D S-wave velocity model, which gathered the advantages of each individual model. In a following step, P- and S-reflectivity images of the subduction zone were obtained using different pre stack and post-stack depth migration techniques. Among them, the recent prestack line-drawing depth migration scheme yielded revealing results. Next, synthetic seismograms modelled using the reflectivity method allowed, through their input 1D synthetic P- and S-velocities, to infer the composition and rocks within the subduction zone. Finally, an image of the subduction zone is given, jointly interpreting the results from this work with results from other studies. The Chilean seismogenic coupling zone at 38.25°S shows a continental crust with highly reflective horizontal, as well as (steep) dipping events. Among them, the Lanalhue Fault Zone (LFZ), which is interpreted to be east-dipping, is imaged to very shallow depths. ...
    Type of Medium: Dissertations
    Pages: xvi, 111 Seiten , Illustrationen, Diagramme
    URL: http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-409183
    URN: urn:nbn:de:kobv:517-opus4-409183
    Language: English
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  • 7
    Monograph available for loan
    Monograph available for loan
    Health policy : choice, equality and cost (2016)
    Cheltenham, UK : Edward Elgar Publishing
    Details
    Call number: PIK O 040-16-90328
    Description / Table of Contents: This lucid and comprehensive book explores the ways in which the State, the market and the citizen can collaborate to satisfy people's health care needs. It argues that health care is not a commodity like any other. It asks if its unique properties mean that there is a role for social regulation and political management. Apples and oranges can be left to the buyers and the sellers. Health care may require an input from the consensus, the experts, the insurers, the politicians and the bureaucrats as well. David Reisman makes a fresh contribution to the debate. He argues that the three policy is
    Type of Medium: Monograph available for loan
    Pages: viii, 371 Seiten
    ISBN: 9781785365201 (print) , 1785365215 (print) , 9781785365218 (print)
    Language: English
    Note: Contents: Front Matter -- Copyright -- Contents -- Acknowledgements -- 1. Introduction -- 2. Good health -- 3. The invisible mind -- 4. Inputs and outcomes -- 5. The individual -- 6. The practitioner -- 7. The public -- 8. The logic of insurance -- 9. Insurance: private and public -- 10. Equity and equality -- 11. The right to health -- 12. Inequality and health -- 13. Narrowing the gap -- 14. Equalising medical care -- 15. The cost of care -- 16. Cost containment -- 17. State, market and cost -- 18. Conclusion -- References -- Index
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  • 8
    Monograph available for loan
    Monograph available for loan
    Eurozone dystopia : groupthink and denial on a grand scale (2015)
    Cheltenham, UK : Edward Elgar Publishing
    Details
    Call number: IASS 16.90012
    Type of Medium: Monograph available for loan
    Pages: ix, 512 Seiten
    Edition: Online-Ausg.
    ISBN: 97817847166777 , 9781784716660 (print) , 9781784716653 (print)
    Language: English
    Note: ""Cover""; ""Copyright""; ""Contents""; ""Preface""; ""Conventions""; ""Abbreviations""; ""1. Introduction""; ""PART I The Early Years""; ""2. Early attempts at monetary union and the Hague Summit""; ""3. The Werner Report and the collapse of Bretton Woods""; ""4. The 'snake in the tunnel' reappears""; ""5. Monetarism arrives amidst currency turmoil""; ""6. The Delors Report""; ""7. Onward to Maastricht""; ""8. The Maastricht Treaty""; ""9. Converging to crisis and austerity""; ""10. The ideological straitjacket""; ""11. The Stability and Growth Pact (SGP)"". , ""12. The convergence farce: smokescreens and denial""""PART II The Path to Crisis""; ""13. The first few years: smug self-congratulation and mass delusion""; ""14. The 2003 fiscal crisis""; ""15. The German 'jobwunder'""; ""16. European Groupthink: denial on a grand scale""; ""PART III The Options for Europe""; ""17. A monetary framework for fiscal policy activism""; ""18. Framing the debate: two alternative visions of the economy""; ""19. The basic principles of functional finance""; ""20. The federal solution""; ""21. Overt Monetary Financing""; ""22. Abandoning the euro"". , ""23. Employment guarantees""""References""; ""Index"".
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