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Recent tectonics and Mesozoic inherited structures in the offshore of the Central-Southern Adria Plate
No full textSeismic signature of Messinian event in the Mediterranean basins
No full textThe MSC, even if it is well documented in the whole Mediterranean Sea by several different seismic markers, is a still open question. The interpretation of the seismic signatures let to distinguish alternated phases of exposure and flooding of the different basins which often result to be hardly correlated to one another.
In the Adriatic basin and in the Sicily Channel the Messinian layer, where it is not replaced by an erosional surface, is present as a thin evaporate layer mainly constituted by Gessoso Solfifera formation. The Messinian trilogy has been observed only in the deep Balearic Basin, while in the Ionian and Levantine Basins it shows a mainly salt seismic facies.
The presented seismic data aim to contribute to the recognition of the different seismic facies which characterize the different units; their comparison could improve the comprehension of the processes that affected the Messinian events in the Mediterranean region, specially because of the critical lacking of boreholes
IONIAN BASIN
No full textThe Ionian basin is the remnant of a wide sedimentary basin floored by oceanic crust. It was originated after the Permo-Triassic lithospheric rifting between the Africa megaplate and the Adria continental block [Finetti, 1982; Stampfli et al., 2001].
The rifting phase produced deep grabens on a thinned continental crust; successively, the oceanic opening of Ionian basin was accompanied by the NE migration of the Adria plate and its counterclockwise rotation.
During the Paleogene-Miocene time the north-western Ionian crust has been subducted below the Southern Apennine Maghrebian orogenic belt. After the collision between the orogenic belt and the continental Adria and Pelagian forelands during the Upper Miocene, only the Calabrian Arc is still migrating and overthrusting the oceanic foreland with a SSE direction [Del Ben et al., 2008]. To the East, the Ionian basin is subducting under the Hellenic Arc, cut by the Cephalonia active right-lateral strike-slip fault system (Fig. X.2) and the Mediterranen Ridge accretionary wedge. The southern margin of the Ionian basin is a rifted margin formed by the transition to the Africa plate continental crust in the Sirte Gulf.
The seismic facies of the MSC unconformities and units are described
CYPRUS ARC
No full textThe Cyprus Arc, in the northeastern Mediterranean, represents the convergent zone between the African, Arabian and European plates, with the intermediate westerly escaping Aegean–Anatolian microplate. The arc is regionally characterized by south-verging thrusts related to northward subducton of the African plate.
Compressional deformation initiated in the Late Cretaceous and produced several basins inner the arc, which are separated through regional rises [Biju-Duval et
al., 1976]. The rather complex evolution of the region developed as an ophiolitic suture and prosecuted in Eocene and late Miocene shaping an arcuate fold-thrust belt. The compressive fault systems has been often reactivated, after the end of Miocene, by the transpressional regime [Hall et al., 2005; Calon et al., 2005; Bowman, 2001]. Generally, the different basins show defferent evolution, in both space and time. They were already mainly shaped when the Messinian Salinity
Crisis started and evaporites deposited with different thickness. These basins, which were successively involved in the Plio-Quaternary tectonics, show mobilization of salt by compression or sliding, mainly occurred during the Pliocene time.
The seismic facies of the MSC unconformities and units are described
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
Integrating airborne laser scanning and 3d ground-penetrating radar for the investigation of protohistoric structures in Croatian Istria
Full text linkWe present the investigation of two rather ephemeral archaeological sites located in the municipality of Oprtalj/Portole (Croatian Istria) by means of integrated archaeological, geophysical and remote sensing techniques. The results obtained confirm the first interpretation of these contexts; a protohistoric burial mound and a small hillfort, respectively. We further obtained detailed information about both deposits through 2D and 3D remote sensing and geophysical studies that produced maps, volumes, profiles and cross-sections. At the first site, the volume reconstruction of both the inner stone core and the superimposed earth of the putative stone mound also allowed us to estimate the labour necessary to erect the structure. In conclusion, our study demonstrates that the integrated approach can be valuable not only to acquire novel data about the archaeological deposits but also to calibrate future investigations and to plan effective measures for heritage management, monitoring and valorization
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
Advanced processing of seismic data in Central Adriatic Basin to highlight Plio-Quaternary features
No full textThe geological setting of the Central Adriatic Basin is characterized by the presence of several sedimentary features originated during the growing up of the Dinaric and Apennine Chains. The migration of these fronts towards the axis of the Adriatic Sea, determined the Plio-Quaternary clastic sequence (Channel et al., 1979). During the Lower Pliocene, the migration of the Apennine Chain produced the west-ward tilting of the Adriatic foreland, causing a sedimentary wedge and a thickness of sub-horizontal Pliocene deposits, covered by the Quaternary prograding sequence.
These last are visible on the seismic profile ADRIA 95 located in the western portion of the Central Adriatic Basin. The profile was partially processed by Geletti et al. (2008) and now we decided to improve the elaboration of the seismic signal to better define the reflectors characterizing the Plio-Quaternary sequence, the recent deformation of the shallower layers and some bright spots, probably associated to gas presence.
We applied a standard processing flow, testing in particular multiple reflections attenuation methods, pre-stack deconvolution techniques, stacking velocity analysis and depth migration within the first 2 sec TWT of the recording trace. The bright spots have been focused by seismic attributes analysis
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