1,721,012 research outputs found
Integration of geophysical and geological data and numerical models in basins
No full textDuring the past decades vast amounts of geological, geophysical and, more recently, geodetic data from sedimentary basins have been accumulated. Integrated interpretation of these complementary data has the potential of constraining quantitative models to hitherto unknown detail, provided these models in a physically consistent way incorporate a wide variety of processes related to basin evolution. This Special Issue emphasises the importance of a synergic use of geophysical and geological data and different modelling methodologies, analytical and numerical, in the analysis of basin evolution. It collects manuscript submitted by scientists from different disciplines and emphasizes various integrated modelling methods to identify the perspectives for further developments
Strain localization due to structural in-homogeneities in the Central European Basin System
No full textThe large-scale crustal deformations observed
in the Central European Basin System (CEBS) are the result of the interplay between several controlling factors, among which lateral rheological heterogeneities play a key role. We present a finite-element integral thin sheet model of stress and strain distribution within the CEBS. Unlike
many previous models, this study is based on thermomechanical data to quantify the impact of lateral contrasts on the tectonic deformation. Elasto-plastic material
behaviour is used for both the mantle and the crust, and the effects of the sedimentary fill are also investigated. The
consistency of model results is ensured through comparisons with observed data. The results resemble the presentday dynamics and kinematics when: (1) a weak granite-like
lower crust below the Elbe Fault System is modelled in contrast to a stronger lower crust in the area extending north of the Elbe Line throughout the Baltic region; and (2) a transition domain in the upper mantle is considered between the shallow mantle of the Variscan domain and the deep mantle beneath the East European Craton (EEC),
extending from the Elbe Line in the south till the Tornquist Zone. The strain localizations observed along these structural
contrasts strongly enhance the dominant role played by large structural domains in stiffening the propagation of tectonic deformation and in controlling the basin formation and the evolution in the CEBS
Mesozoic evolution of the Central European Basin System (CEBS): constraints from numerical modelling
No full textApplication of the differential interferometric technique (DInSAR) to unrevel the present-day vertical movement in the Gluckstadt graben, Germany
No full text
The legacy of the NE German Basin - Reactivation by compressional buckling
No full textIn contrast to previously published models for the area, the seismic reflection Moho is essentially flat beneath the NE German Basin along the DEKORP deep seismic profile Basin'96. This raises the question, whether the present structure of the crust and flat Moho reflect the initial formation of the basin or modification by more recent processes. A 2D flexural model, developed for a thin elastic plate, is presented together with lithospheric strength profiles calculated along the BASIN 9601 reflection seismic line. The analysis shows a southward decrease of lithospheric strength below the Basin, with a lithospheric decoupling between the crust and the mantle. The modelling supports the hypothesis that the present Moho topography is caused by flexural buckling which caused subsidence of the NE German Basin during the Upper Cretaceous-Early Cenozoic inversion event. This suggests that the basin is in isostatic disequilibrium, and that compressive stresses are required to keep the present basin geometry
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Driving mechanisms for basin formation and evolution
No full textA basin may be called complex if its temporal evolution was complicated by several tectonic or thermal events such as stretching and inversion or if it is composed of a variety of regionally distributed sub-basins with differing histories. Aulacogens or typically inverted failed rifts are examples of the first type. The second type is frequently encountered in intraplate settings located above continental crust. This may be because the continental crust is rather inhomogeneous as it results from long-term accretion of terrains, manifested by different thicknesses and materials
- …
