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  • 1
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    Modeling and inversion in weakly anisotropic media (2010)
    Univ. Hamburg
    Details
    Publication Date: 2021-03-29
    Description: Mit der Annahme schwacher Anisotropie vereinfachen sich die Lösungen der Modellierung und Inversion anisotroper Medien. Üblicherweise werden Perturbation-Methoden zur Beschreibung der Wellen-Ausbreitung in schwach anisotropen Medien verwendet, ein anisotropes Medium wird ersetzt durch ein isotropes Hintergrundmodell. Hier lässt sich die Wellenausbreitung leicht behandeln und die anisotropen Effekte werden mit Hilfe der Perturbations-Methode berechnet. Um die jeder Perturbations-Methode anhaftenden Fehler zu minimieren, sollte das gewählte isotrope Hintergrundmedium dem korrektem anisotropen Medium so ähnlich wie möglich sein. Zur Bestimmung des optimalen isotropen Mediums wurden Formeln für sektoriell best angepasste isotrope Medien entwickelt. Deren Anwendung wurde anhand von Modellen mit transversal isotropen und orthorombischen Symmetrien gezeigt...
    Description: thesis
    Keywords: 551.22 ; 550 ; Seismische Wellen {Geophysik} ; Übertragungsmedien {Seismologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 134 S.
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  • 2
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    Remote sensing of the Northwest African upwelling and its production dynamics (2010)
    Univ. Bremen
    Details
    Publication Date: 2021-03-29
    Description: Carbon export; SeaWiFS; variability; upwelling; Atlantic Ocean; chlorophyll filament; SeaWiFS; SST. - The North Atlantic off NW Africa is characterized by the trade wind induced upwelling of cold and nutrient rich waters. As one of most strongest eastern boundary upwelling areas it is marked by low sea surface temperature and high bio-production, both subject to strong seasonal and interannual variations.Satellite measurements of sea surface temperature (SST) and chlorophyll-a (Chl-a) in the upper water-column were used to (a) recognize the upwelling of deep water and its distribution and mixing in the surface, (b) identify the development of phytoplankton blooms and (c) provide further insights in the characteristics of its variations.Measurements of surface Chl-a were compared to deep-sea fluxes of organic carbon in order to determine the relationship between both parameters and to further calculate the export of Corg and the export variation strength.The off-shore extension of SST-defined upwelling from 1988 through 1999 between 18ʿ and 25ʿN shows maxima in January and May/June with an average area of 140,000 km2 (standard deviation of 20,000 km2). Minima in August exhibit an extension of 43,000 km2 (15,000 km2 standard deviation). A correlation between ...
    Description: thesis
    Keywords: 910 ; UKB 100 ; Nordatlantik {Regionale Ozeanologie}
    Language: English
    Type: monograph , publishedVersion
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  • 3
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    FS Sonne Fahrtbericht/Cruise Report SO 190 (2010)
    IFM-Geomar, Kiel
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 551.4 ; 551.22 ; 550
    Language: English
    Type: article , publishedVersion
    Format: 193 S.
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  • 4
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    Operator-splitting methods for wave-equations (2010)
    Humboldt-Univ., Berlin
    Details
    Publication Date: 2021-03-29
    Description: The motivation to our studies came from simulation of earth-quakes, that are modeled with elastic wave equations. In our paper we focus on the study of the stiff problems for the wave-equations. Due to this contribution we discuss iterative operator splitting methods for wave-equations motivated from a realistic problem in seismic sources and waves. The operator-splitting methods are wel-know to solve such complicated multidimensional and multi physics problems. We present the consistency analysis for the iterative methods as theoretical background for the wave-equation with respect to the underlying boundary conditions. From the algorithmic point of view we discuss the application of the decoupling and non-decoupling the equations, with respect to the eigenvalues. We verify our methods for test problems with known analytical solutions. Multi-dimensional examples are presented for realistic applications in wave equations. Finally we discuss the results.
    Description: report
    Keywords: 551.22 ; 550.28 ; 550 ; ZfM : partial differential equations ; ZfM : Operator-Splitting methods ; ZfM : iterative mehtods ; ZfM : seismic sources and waves ; ZfM : consistency analysis
    Language: English
    Type: article , publishedVersion
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  • 5
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    The economic chambers and the enforcement of local economic interests (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 43 S.
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  • 6
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    Carpathian Basin and the development of the Hungarian landscape theory until 1948 (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: The emphasis between theoretical, global and regional geography, proportion from research to publication has changed several times during the history of Hungarian geography. Certain scholars of Hungarian geography (geo-philosophers, and some theorists) were explicitly attached to theoretical issues of geographic science, yet the majority of geographers advantaged the concrete territorial descriptions and analysis. The regional approach appeared in the Hungarian geography much earlier than the demand on clarification of the theoretic issues of landscape. The first attempt to divide the country into macro landscapes was carried out in the first half of the 1500's. From this time on the geographic science formulated a demand to analyse the internal structure of the country within the frameworks of public administration or in the framework of some other way delimited geographic macro-regions. The administrative space enjoyed for centuries a favoured role, yet the demand for analyses based on the macro regional delimitation was always represented too. On general level the issues of landscape have already been present in Hungarian geographic science (the formulation of concepts, categories, border marking theories etc.), but Hungarian geographic science concerning the territorial research of Hungary has achieved the greatest results mostly in the fields of analytical landscape research, and evaluation ...
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 51 S.
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  • 7
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    Civil organisations and regional identity in the south Hungarian great plain (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 102 S.
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  • 8
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    Idealistic vision or reality? (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 126 S.
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  • 9
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    Spatial development and the expanding European integration of the Hungarian banking system (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: The paper is concerned with the development stages and the spatial transformation of the Hungarian banking system in the economic transition & post-transition periods. It gives an overview of the development tendencies of the financial re-integration into the global market and particularly concentrates on the spatial polarisation factors (concentration de-concentration; centralisation decentralisation) which affect banking. The paper explores the arguments behind the extremely high centralisation of headquarter functions in Budapest and the factors that have impact on the establishment of locally-regionally based banks. This is followed by an introduction of the different organisational (institutional) and territorial (location strategies) level of the Hungarian banking system, dealing with either the domestic or the international financial central-function of Budapest and the reorganisation of the bank network and with its social consequences (financial exclusion) in the regions. The paper argues that EU membership is not a dramatic event in the integration process of the Hungarian banking sector, partly due to its particular ownership structure, the integration of the banking sector has already taken place. The paper concludes that the EMU integration could have been affected more adversely the Hungarian regions already characterised by the endogenous disparities, which are to a large extent rooted in the deficiency of their financial base.
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 68 S.
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  • 10
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    The spatial differences of modernisation in Hungary at the beginning of the 20th century (2010)
    RKK, Pécs
    Details
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 46 S.
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