Refine
Has Fulltext
- no (4)
Document Type
- Article (2)
- Doctoral Thesis (1)
- Review (1)
Is part of the Bibliography
- yes (4)
Keywords
- Alps (1)
- Geodynamics (1)
- Mountain building (1)
- Seismic imaging (1)
- Seismic network (1)
- Seismology (1)
- admixture (1)
- elephantid evolution (1)
- mammoth (1)
- paleogenomics (1)
The AlpArray seismic network
(2018)
The AlpArray programme is a multinational, European consortium to advance our understanding of orogenesis and its relationship to mantle dynamics, plate reorganizations, surface processes and seismic hazard in the Alps-Apennines-Carpathians-Dinarides orogenic system. The AlpArray Seismic Network has been deployed with contributions from 36 institutions from 11 countries to map physical properties of the lithosphere and asthenosphere in 3D and thus to obtain new, high-resolution geophysical images of structures from the surface down to the base of the mantle transition zone. With over 600 broadband stations operated for 2 years, this seismic experiment is one of the largest simultaneously operated seismological networks in the academic domain, employing hexagonal coverage with station spacing at less than 52 km. This dense and regularly spaced experiment is made possible by the coordinated coeval deployment of temporary stations from numerous national pools, including ocean-bottom seismometers, which were funded by different national agencies. They combine with permanent networks, which also required the cooperation of many different operators. Together these stations ultimately fill coverage gaps. Following a short overview of previous large-scale seismological experiments in the Alpine region, we here present the goals, construction, deployment, characteristics and data management of the AlpArray Seismic Network, which will provide data that is expected to be unprecedented in quality to image the complex Alpine mountains at depth.
Consequences of twenty-first-century policy for multi-millennial climate
and sea-level change
(2016)
Most of the policy debate surrounding the actions needed to mitigate and adapt to anthropogenic climate change has been framed by observations of the past 150 years as well as climate and sea-level projections for the twenty-first century. The focus on this 250-year window, however, obscures some of the most profound problems associated with climate change. Here, we argue that the twentieth and twenty-first centuries, a period during which the overwhelming majority of human-caused carbon emissions are likely to occur, need to be placed into a long-term context that includes the past 20 millennia, when the last Ice Age ended and human civilization developed, and the next ten millennia, over which time the projected impacts of anthropogenic climate change will grow and persist. This long-term perspective illustrates that policy decisions made in the next few years to decades will have profound impacts on global climate, ecosystems and human societies - not just for this century, but for the next ten millennia and beyond.
In beiden deutschen Teilstaaten gehörten die Rentenversicherungen zu den ersten Nutzern von Computern. Bereits seit Mitte der 1950er Jahre berechneten diese die Altersruhegelder im Westen, zehn Jahre später auch in der DDR. Die digitale Datenverarbeitung versprach große Rationalisierungs- und Beschleunigungseffekte. Gleichwohl führten die verschiedenen Staats- und Versicherungsformen zu einer unterschiedlichen Nutzung von Computern.
Die Studie von Thomas Kasper zeigt, unter welchen Bedingungen sich die elektronische Datenverarbeitung in der Sozialverwaltung durchsetzen konnte. Sie verdeutlicht, welchen bisher unbekannten Einfluss sie auf sozialpolitische Entscheidungen sowie auf die Arbeitsverhältnisse und den Datenschutz in beiden deutschen Teilstaaten hatte. Nach der Wiedervereinigung ließ nur die gemeinsame Nutzung der vorhandenen digitalen Strukturen die Zusammenführung beider Sozialsysteme gelingen.