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  • 1
    Call number: ZSP-189-89
    In: Berichte aus dem Fachgebiet Physik
    Type of Medium: Series available for loan
    Pages: Getr. Zählung
    Series Statement: Berichte aus dem Fachgebiet Physik / Alfred-Wegener-Institut für Polar- und Meeresforschung 89
    Branch Library: AWI Library
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  • 2
    ISSN: 1434-4475
    Keywords: 4-Benzoyl-5-phenylfuran-2,3-dione ; Dibenzoylacetic acid-N-carboxyamides ; Oxazin-2,4-dione ; Keto-enole tautomerism ; Semiempirical quantum chemical calculations ; Crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 4-Benzoyl-5-phenylfuran-2,3-dione (1) and the urethanes2 combine under loss of carbon monoxide yielding the open chain dibenzoylacetic acid derivatives3 and4. 3a, b only can be cyclized to the oxazinone5. The keto-enole tautomerism3 ⇌4 is further investigated with aid of semiempirical quantum chemical calculations, based upon the molecular geometry of3a, deduced from an X-ray study.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2014-04-15
    Description: Grid technology can help scientists to overcome problems with the Data Deluge in climate research, as it facilitates large scale data sharing and reuse of data. Worldwide there are different initiatives to facilitate data handling for scientific work and to built up collaborational working environments with interinstitutional data access.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , NonPeerReviewed
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  • 4
    Publication Date: 2015-07-23
    Description: The numerical simulation code TsunAWI was developed in the framework of the German-Indonesian Tsunami Early Warning System (GITEWS). The numerical simulation of prototypical tsunami scenarios plays a decisive role in the a priory risk assessment for coastal regions and in the early warning process itself. TsunAWI is based on a finite element discretization, employs unstructured grids with high resolution along the coast, and includes inundation. This contribution gives an overview of the model itself and presents two applications. For GITEWS, the existing scenario database covering 528 epicenters / 3450 scenarios from Sumatra to Bali was extended by 187 epicenters / 1100 scenarios in the Eastern Sunda Arc. Furthermore, about 1100 scenarios for the Western Sunda Arc were recomputed on the new model domain covering the whole Indonesian Seas. These computations would not have been feasible in the beginning of the project. The unstructured computational grid contains 7 million nodes and resolves all coastal regions with 150m, some project regions and the surrounding of tide gauges with 50m, and the deep ocean with 12km edge length. While in the Western Sunda Arc, the large islands of Sumatra and Java shield the Northern Indonesian Archipelago, tsunamis in the Eastern Sunda Arc can propagate to the North. The unstructured grid approach allows TsunAWI to easily simulate the complex propagation patterns with the self-interactions and the reflections at the coastal regions of myriads of islands. For the Hydrographic and Oceanographic Service of the Chilean Navy (SHOA), we calculated a small scenario database of 100 scenarios (sources by Universidad de Chile) to provide data for a lightweight decision support system prototype (built by DLR). This work is part of the initiation project "Multi hazard information and early warning system in cooperation with Chile" and aims at sharing our experience from GITEWS with the Chilean partners.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 5
    Publication Date: 2015-10-03
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 6
    Publication Date: 2014-12-17
    Description: Der Vortrag gibt einen Überblick über besonders prägnante Tsunami-Ereignisse und über deren Entstehung durch Erdbeben, Hangrutsche oder Vulkanausbrüche. Der Japan-Tsunami 2011 und der Tsunami 2004 im Indischen Ozean sind heutzutage im kollektiven Gedächtnis verankert. Wer aber weiß noch, dass ein Erdbeben und Tsunami auch die Naturkatastrophe mit den meisten Todesopfern im 20. Jahrhundert verursacht hat - in Messina und Reggio Calabria 1908? Neben Pazifischem und Indischem Ozean ist das Mittelmeer eine besonders Tsunami-gefährdete Region, Alexandria etwa wurde mehrfach von Tsunamis getroffen. Zusätzlich erläutert die Referentin, welche Rolle ein prähistorischer Tsunami bei der Entstehung der heutigen Nordsee gespielt hat.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 7
    Publication Date: 2016-04-21
    Description: There is an increasing public interest in sea ice information from both Polar Regions, which requires up-to-date background information and data sets at different levels for various target groups. In order to serve this interest and need, seaiceportal.de (originally: meereisportal.de) was developed as a comprehensive German knowledge platform on sea ice and its snow cover in the Arctic and Antarctic. It was launched in April 2013. Since then, the content and selection of data sets increased and the data portal received increasing attention, also from the international science community. Meanwhile, we are providing near-real time and archive data of many key parameters of sea ice and its snow cover. The data sets result from measurements acquired by various platforms as well as numerical simulations. Satellite observations of sea ice concentration, freeboard, thickness and drift are available as gridded data sets. Sea ice and snow temperatures and thickness as well as atmospheric parameters are available from autonomous platforms (buoys). Additional ship observations, ice station measurements, and mooring time series are compiled as data collections over the last decade. In parallel, we are continuously extending our meta-data and uncertainty information for all data sets. In addition to the data portal, seaiceportal.de provides general comprehensive background information on sea ice and snow as well as expert statements on recent observations and developments. This content is mostly in German in order to complement the various existing international sites for the German speaking public. We will present the portal, its content and function, but we are also asking for direct user feedback.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 8
    Publication Date: 2016-08-31
    Description: There is an increasing public interest in sea ice information from both Polar Regions, which requires up-to-date background information and data sets at different levels for various target groups. In order to serve this interest and need, seaiceportal.de (originally: meereisportal.de) was developed as a comprehensive German knowledge platform on sea ice and its snow cover in the Arctic and Antarctic. It was launched in April 2013. Since then, the content and selection of data sets increased and the data portal received increasing attention, also from the international science community. Meanwhile, we are providing near-real time and archive data of many key parameters of sea ice and its snow cover. The data sets result from measurements acquired by various platforms as well as numerical simulations. Satellite observations of sea ice concentration, freeboard, thickness and drift are available as gridded data sets. Sea ice and snow temperatures and thickness as well as atmospheric parameters are available from autonomous platforms (buoys). Additional ship observations, ice station measurements, and mooring time series are compiled as data collections over the last decade. In parallel, we are continuously extending our meta-data and uncertainty information for all data sets. In addition to the data portal, seaiceportal.de provides general comprehensive background information on sea ice and snow as well as expert statements on recent observations and developments. This content is mostly in German in order to complement the various existing international sites for the German speaking public. We will present the portal, its content and function, but we are also asking for direct user feedback.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 9
    Publication Date: 2017-07-07
    Description: The numerical simulation code TsunAWI was developed in the framework of the German-Indonesian Tsunami Early Warning System (GITEWS). The Numerical simulation of prototypic tsunami scenarios plays a decisive role in the a priori risk assessment for coastal regions and in the early warning process itself. TsunAWI is suited for both tasks. It is based on a finite element discretisation, employs unstructured grids with high resolution along the coast, and includes inundation. This contribution presents two fields of applications. In the Indonesian tsunami early warning system, the existing TsunAWI scenario database covers the Sunda subduction zone from Sumatra to the Lesser Sunda Islands with 715 epicenters and 4500 scenarios. In a collaboration with Geoscience Australia, we support the scientific staff at the Indonesian warning center to extend the data base to the remaining tectonic zones in the Indonesian Archipelago. The extentension started for North Sulawesi, West and East Maluku Islands. For the Hydrographic and Oceanographic Service of the Chilean Navy (SHOA), we calculated a small scenario database of 100 scenarios (sources by Universidad de Chile) for a lightweight decision support system prototype (built by DLR). The earthquake and tsunami events on 1 April 2014 and 16 November 2016 showed the practical use of this approach in comparison to hind casts of these events.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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  • 10
    Publication Date: 2016-05-04
    Description: Das AWI hat sich den wissenschaftspolitischen Rahmenvorgaben und Herausforderungen gestellt, die Relevanz der Grundlagenforschung für die Gesellschaft zu belegen, „Wissenstransfer und -Dialoge“ sichtbar zu machen und in der Forschung zu verankern. Um dieser zunehmenden Bedeutung Rechnung zu tragen, haben wir diesem Thema im Forschungsprogramm PACES-II in Topic 4 einen hohen Stellenwert eingeräumt. Dieser Weg soll zukünftig in der Weiterentwicklung der Forschung unseres Instituts noch erkennbarer gestaltet werden. In Topic 4 “Bridging research and society – products, tools and climate services“ des PACES-II Programms wird die Kette von der Entwicklung operationeller Analyse und Vorhersagemethoden, über die Zusammenfassung von Datenstrukturen zu Datenbanken und Informationssystemen bis hin zur Entwicklung von Dialogformen und konkreten Produkten für Partner in der Gesellschaft vollzogen. Unsere Beteiligung an dieser Schnittstellenaufgabe wird bereits seit Jahren von einigen Wissenschaftlerinnen und Wissenschaftlern und durch Einrichtungen wie z.B. das Klimabüro, das Nordseebüro oder unsere Mitwirkung an der HGF Earth System Knowledge Platform gelebt. Damit wird das im AWI generierte Wissen z.B. mit gesellschaftlichen Akteuren ausgetauscht und in entscheidungsrelevante Anwendungen und Prozesse eingebracht. In unserer Veranstaltung möchten wir Beispiele für laufende Aktivitäten in diesen Bereichen vorstellen und mit Euch in eine Diskussion über Erfahrungen und Wahrnehmungen der mit dem Thema verbundenen Aufgaben und Aktivitäten im AWI eintreten.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
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