scholarly journals Forward Modelling of Bouguer Anomalies along a transect of the Southern Apennines and the Southern Tyrrhenian Sea (Italy)

2021 ◽  
Vol 140 (3) ◽  
pp. 1-11
Author(s):  
Assel Akimbekova ◽  
Paolo Mancinelli ◽  
Manuel Pozo ◽  
Cristina Pauselli ◽  
Giorgio Minelli ◽  
...  
Keyword(s):  
Tyrrhenian Sea ◽  
Forward Modelling ◽  
Southern Apennines ◽  
Bouguer Anomalies ◽  
Southern Tyrrhenian Sea

Forward  Modelling of Bouguer Anomalies along a transect of the Southern Apennines and the Tyrrhenian back-arc basin.

2021 ◽  
Author(s):  
Assel Akimbekova ◽  
Paolo Mancinelli ◽  
Massimiliano Rinaldo Barchi ◽  
Cristina Pauselli ◽  
Giorgio Minelli
Keyword(s):  
Gravity Anomalies ◽  
Moho Depth ◽  
Positive Trend ◽  
Tyrrhenian Sea ◽  
Southern Apennines ◽  
Bouguer Anomalies ◽  
Crustal Model ◽  
Density Values ◽  
Best Fitting ◽  
Fitting Model

<p>Abstract</p><p> </p><p>In the present study, starting from original measurement stations, we created the Bouguer anomaly map of Southern Italy with a reduction density of 2670 kg m<sup>-3</sup>. We perform a regional gravity modelling at crustal scale along the trace of the CROP-04 (on-shore) and MB6 (off-shore) deep seismic reflection profiles crossing the Southern Apennines and the Southern Tyrrhenian Sea. Along the 320 km-long modelled profile, we investigate crustal-scale sources for the observed gravity anomalies. </p><p>After a compelling review of the published Moho geometries in the area, that were retrieved from either active or passive seismic methods, we test them in the observed gravity field through forward modeling of the Bouguer gravity anomalies. The comparison between the different Moho interpretations shows that the steepness of the subducting slab, the position of the step between the western (Tyrrhenian) and the eastern (Adriatic) Moho and Moho depth represent the main features influencing the observed Bouguer anomalies at crustal scale.</p><p>Finally, we provide a best-fitting model across both onshore and offshore areas. In the proposed best-fitting model, the wide wavelength and strong regional Bouguer anomalies correlate with the geometry of the Moho discontinuity and deep tectonic structures. On the other hand, the small-amplitude oscillations of the gravity anomalies were attributed to the low-density values of the Pliocene-Quaternary deposits both on- (e.g. the Bradanic trough) and off-shore (e.g. recent deposits in the Tyrrhenian sea bottom). Gravity minima correspond to the crustal doubling underneath the Southern Apennines where the Tyrrhenian Moho (~27 km depth) overlies the deeper Adriatic Moho (~50 km depth). The positive trend of the observed anomaly toward NE is related to the shallowing of the Adriatic Moho to depths of ~28 km in the Adriatic. Similarly, towards SW, the observed anomaly follows a positive trend towards the maxima located in the Central Tyrrhenian Sea. We model this trend as representative of crustal thinning and shallowing to values of ~12 km depth of the Tyrrhenian Moho. We also model a crustal transition from geometries and density values typical of a continental crust in the Adriatic domain towards a more oceanic structure and composition in the Tyrrhenian domain. This crustal model locates the westward flexure of the Adriatic Moho, mimicking the subduction of the Adriatic lithosphere beneath the Peri-Tyrrhenian block and locates step between the western (Tyrrhenian) and the eastern (Adriatic) Moho beneath the Apennines range.</p><p>The resulted gravity forward model provide contributions to the tectonic settings understanding of the area by providing a robust crustal model ranging from the Tyrrhenian Sea to the Apulian foreland.</p><p> Finally, we believe that the proposed model can serve as a starting point for future studies investigating the upper crustal geometries in the area and addressing open questions about its relations with seismicity distribution.</p><p> </p>

Diurnal Nesting of Caretta caretta (Linnaeus, 1758) in Southern Tyrrhenian Sea

2017 ◽  
Vol 25 (2) ◽  
pp. 151
Author(s):  
Gianni Insacco ◽  
Filippo Spadola ◽  
Bruno Zava
Keyword(s):  
Caretta Caretta ◽  
Tyrrhenian Sea ◽  
Southern Tyrrhenian Sea

Distribution patterns and population structure of Illex coindetii (Cephalopoda: Ommastrephidae) in the Southern Tyrrhenian Sea: Historical series of 14 years trawl survey

2011 ◽  
Vol 109 (2-3) ◽  
pp. 342-350 ◽  
Author(s):  
Anna Perdichizzi ◽  
Laura Pirrera ◽  
Daniela Giordano ◽  
Francesco Perdichizzi ◽  
Barbara Busalacchi ◽  
...  
Keyword(s):  
Population Structure ◽  
Distribution Patterns ◽  
Trawl Survey ◽  
Tyrrhenian Sea ◽  
Historical Series ◽  
Southern Tyrrhenian Sea

Crustal magnetism of the Southern Tyrrhenian Sea from aeromagnetic surveys

2006 ◽  
Vol 262 (1) ◽  
pp. 337-348
Author(s):  
G. L. Piangiamore ◽  
O. Faggioni ◽  
M. S. Barbano
Keyword(s):  
Tyrrhenian Sea ◽  
Southern Tyrrhenian Sea

scholarly journals A Histological Study of Ovarian Development in the Giant Red ShrimpAristaeomorpha foliacea(Crustacea: Decapoda: Aristeidae) from the Southern Tyrrhenian Sea (Western Mediterranean)

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Anna Perdichizzi ◽  
Laura Pirrera ◽  
Valeria Micale ◽  
Ugo Muglia ◽  
Paola Rinelli
Keyword(s):  
Ovarian Development ◽  
Developmental Stages ◽  
Histological Study ◽  
Western Mediterranean ◽  
Ovary Development ◽  
Tyrrhenian Sea ◽  
Length Frequency ◽  
Southern Tyrrhenian Sea ◽  
Aristaeomorpha Foliacea ◽  
Trawl Surveys

The reproductive features of the giant red shrimp,Aristaeomorpha foliacea, were investigated in the southern Tyrrhenian sea by experimental trawl sampling. The annual length-frequency distribution showed a multimodal trend in females, ranging between 16 and 67 mm carapace length (CL), and a unimodal trend in males (18–45 mm CL). Mature males occurred in different proportions all year round, while females displayed seasonal maturity (June—September), with a peak in July. Six oocyte developmental stages were identified, the most advanced of which (Pv, postvitellogenic) had never been described before in this species. Ovary development followed a group-synchronous pattern, with the yolked oocyte stock clearly separated from the reservoir of unyolked oocytes, suggesting thatA. foliaceais a total spawner, with determinate fecundity. Based upon histological findings, a revision of macroscopic maturity staging employed in Mediterranean bottom trawl surveys (MEDITS) is proposed.

scholarly journals New Volcanic Complex Found Below the Southern Tyrrhenian Sea

Eos ◽  
2019 ◽  
Vol 100 ◽  
Author(s):  
Terri Cook
Keyword(s):  
Volcanic Complex ◽  
Tyrrhenian Sea ◽  
Intrusive Complex ◽  
Mantle Material ◽  
Northern Edge ◽  
Southern Tyrrhenian Sea

Researchers have identified a previously unknown volcanic-intrusive complex that originated through the melting of mantle material at the northern edge of the Ionian slab.

Summer larval fish assemblages in the Southern Tyrrhenian Sea (Western Mediterranean Sea)

2014 ◽  
Vol 36 (1) ◽  
pp. 104-117 ◽  
Author(s):  
Daniela Giordano ◽  
Adriana Profeta ◽  
Barbara Busalacchi ◽  
Roberta Minutoli ◽  
Letterio Guglielmo ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Fish Assemblages ◽  
Larval Fish ◽  
Western Mediterranean ◽  
Tyrrhenian Sea ◽  
Western Mediterranean Sea ◽  
Southern Tyrrhenian Sea
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