40 research outputs found

    Segment-scale volcanic episodicity : evidence from the North Kolbeinsey Ridge, Atlantic

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    The upper oceanic crust is produced by magmatism at mid-ocean ridges, a process thought to be characterized by cyclic bouts of intense magmatic activity, separated by periods when faulting accommodates most or even all of the plate motion. It is not known whether there is a distinct periodicity to such magmatic–tectonic cycles. Here we present high-resolution sidescan sonar data from the neovolcanic zone of the North Kolbeinsey Ridge, a shallow slow-spreading ridge where high glacial and steady post-glacial sedimentation rates allow relative flow ages to be determined with a resolution of around 2 kyr using backscatter amplitude as a proxy for sediment thickness and hence age. We identify 18 lava flow fields covering 40% of the area surveyed. A group of 7 flow fields showing the highest (and similar) backscatter intensity are scattered along 75 km of axial valley surveyed, suggesting that at least this length of the segment was magmatically active within a 1.2 kyr time window. Based on conservative age estimates for all datable flows and estimated eruption volumes, the post-glacial volcanic activity imaged is insufficient to maintain crustal thickness, implying that episode(s) of enhanced activity must have preceded the volcanism we image

    In/Conspicuous Changes of the innerCity during Post-Socialism: Sociological and Ethnological Research in Brno

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    The paper deals with under researched urban issues in thr Czech Republic. It is particularly devoted to the inner cities, the changes occurring there during the post-socialist transition but also to some continuous and persistent patterns. Through examining the demografic, ethnic and property structures of the inner city of Brno, we shed light on some of the processes which have been occuring here during post-socialism and which should be the focus of further research

    Recommendations for flood risk management with communities at risk

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    The paper draws lessons from our empirical investigations in Germany, Italy and England/Wales in a very specific perspective: It formulates recommendations for flood risk management with people at risk. Thus it tries to shed light on the views of this important \u96 but often neglected \u96 group of stakeholders. Our addressees are flood risk management professionals, such as flood-practitioners and policy makers at European, national, regional and local levels. The recommendations relate to the following fields: flood risk awareness, flood preparedness, flood risk communication, participation in flood risk management and social vulnerability.Floodsit

    Social vulnerability and the 2002 flood. Country report Germany (Mulde river)

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    The report discusses the findings of a questionnaire survey carried out in five localities of the Mulde catchment (Germany) in 2005 (N=404). All these settlements were heavily affected by the 2002 August flood. Both an event- and a phase-sensitive approach are applied from a bottom-up perspective of the people affected. This specific comprehension allows for a more appropriate understanding of social vulnerability in the context of a European welfare state where risk and affectedness become increasingly individualised. Finally, conclusions with respect to the paradigm of Flood Risk Management are drawn.Floodsit

    Ein seltener Fall

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    AUV Abyss post-processing workflow: autonomous deep sea exploration for ocean research

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    The AUV Abyss post-processing workflow is published as Jupyter Notebooks complementing the IEEE OES AUV 2018 conference contribution "AUV Abyss workflow: autonomous deep sea exploration for ocean research" (Klischies et al., 2018). The publication explains the application and use of these Notebooks in detail. The purpose of the Juypter Notebooks is to share, adapt, execute and document post- processing of AUV Abyss MBES data
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