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  • 1
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    Age determination from different sediment cores off PRISME-3 cruise along the Corsica Trough, Northern Tyrrhenian Sea (2017)
    PANGAEA
    In:  Supplement to: Miramontes, Elda; Cattaneo, Antonio; Jouet, Gwenael; Théreau, E; Thomas, Y; Rovere, Marzia; Cauquil, E; Trincardi, Fabio (2016): The Pianosa Contourite Depositional System (Northern Tyrrhenian Sea): Drift morphology and Plio-Quaternary stratigraphic evolution. Marine Geology, 378, 20-42, https://doi.org/10.1016/j.margeo.2015.11.004
    Details
    Publication Date: 2023-03-02
    Description: The Pianosa Contourite Depositional System (CDS) is located in the Corsica Trough (Northern Tyrrhenian Sea), a confined basin dominated by mass transport and contour currents in the eastern flank and by turbidity currents in the western flank. The morphologic and stratigraphic characterisation of the Pianosa CDS is based on multibeam bathymetry, seismic reflection data (multi-channel high resolution mini GI gun, single-channel sparker and CHIRP), sediment cores and ADCP data. The Pianosa CDS is located at shallow to intermediate water depths (170 to 850 m water depth) and is formed under the influence of the Levantine Intermediate Water (LIW). It is 120 km long, has a maximum width of 10 km and is composed of different types of muddy sediment drifts: plastered drift, separated mounded drift, sigmoid drift and multicrested drift. The reduced tectonic activity in the Corsica Trough since the early Pliocene permits to recover a sedimentary record of the contourite depositional system that is only influenced by climate fluctuations. Contourites started to develop in the Middle?Late Pliocene, but their growth was enhanced since the Middle Pleistocene Transition (0.7?0.9 Ma). Although the general circulation of the LIW, flowing northwards in the Corsica Trough, remained active all along the history of the system, contourite drift formation changed, controlled by sediment influx and bottom current velocity. During periods of sea level fall, fast bottom currents often eroded the drift crest in the middle and upper slope. At that time the proximity of the coast to the shelf edge favoured the formation of bioclastic sand deposits winnowed by bottom currents. Higher sediment accumulation of mud in the drifts occurred during periods of fast bottom currents and high sediment availability (i.e. high activity of turbidity currents), coincident with periods of sea level low-stands. Condensed sections were formed during sea level high-stands, when bottom currents were more sluggish and the turbidite system was disconnected, resulting in a lower sediment influx.
    Keywords: Age, 14C calibrated, CALIB 7.0 with MARINE13 calibration curve (Reimer et al. 2013); Age, dated material; Calendar age; Calendar age, standard deviation; Core; CORE; DEPTH, sediment/rock; Event label; Latitude of event; Longitude of event; Number; Pourquoi Pas ? (2005); PRISME-3; PSM3-CS006; PSM3-CS009; PSM3-CS011; PSM3-CS021; Sample ID
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
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    DATA PANGAEA
  • 2
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    The International Bathymetric Chart of the Southern Ocean Version 2 (IBCSO v2) (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The International Bathymetric Chart of the Southern Ocean Version 2 (IBCSO v2) is a digital bathymetric model (DBM) for the area south of 50° S with special emphasis on the bathymetry of the Southern Ocean. IBCSO v2 has a resolution of 500 m × 500 m in a Polar Stereographic projection (EPSG: 9354). The total data coverage of the seafloor is 23.79% with a multibeam-only data coverage of 22.32%. The remaining 1.47% include singlebeam and other data. IBCSO v2 is the most authoritative seafloor map of the area south of 50°S. IBCSO is a regional mapping project of the General Bathymetric Chart of the Ocean (GEBCO) supported by the Nippon Foundation – GEBCO Seabed 2030 Project. GEBCO is a project under the auspices of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) with the goal to produce the authoritative map of the world's oceans. The IBCSO Project is also an integral part of the Antarctic research community and an expert group of the Scientific Committee on Antarctic Research (SCAR). For further information about the IBCSO Project, please visit http://www.ibcso.org.
    Keywords: Antarctica; AWI_GeoPhy; Binary Object; Binary Object (File Size); Description; IBCSO_v2_extent; Image; Image (File Size); Marine Geophysics @ AWI; Projection; Seabed2030; The Nippon Foundation - GEBCO Seabed 2030 Project
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
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    DATA PANGAEA
  • 3
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    Tectonic expression of an active slab tear from high-resolution seismic and bathymetric data offshore Sicily (Ionian Sea) (2016)
    AGU (American Geophysical Union) | Wiley
    In:  Tectonics, 35 (1). pp. 39-54.
    Details
    Publication Date: 2021-05-11
    Description: Subduction of a narrow slab of oceanic lithosphere beneath a tightly curved orogenic arc requires the presence of at least one lithospheric scale tear fault. While the Calabrian subduction beneath southern Italy is considered to be the type example of this geodynamic setting, the geometry, kinematics and surface expression of the associated lateral, slab tear fault offshore eastern Sicily remain controversial. Results from a new marine geophysical survey conducted in the Ionian Sea, using high‐resolution bathymetry and seismic profiling reveal active faulting at the seafloor within a 140 km long, two‐branched fault system near Alfeo Seamount. The previously unidentified 60 km long NW trending North Alfeo Fault system shows primarily strike‐slip kinematics as indicated by the morphology and steep‐dipping transpressional and transtensional faults. Available earthquake focal mechanisms indicate dextral strike‐slip motion along this fault segment. The 80 km long SSE trending South Alfeo fault system is expressed by one or two steeply dipping normal faults, bounding the western side of a 500+ m thick, 5 km wide, elongate, syntectonic Plio‐Quaternary sedimentary basin. Both branches of the fault system are mechanically capable of generating magnitude 6–7 earthquakes like those that struck eastern Sicily in 1169, 1542, and 1693.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/2015TC003898
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Active tectonics of the Calabrian subduction revealed by new multi-beam bathymetric data and high-resolution seismic profiles in the Ionian Sea (Central Mediterranean) (2017)
    Elsevier
    In:  Earth and Planetary Science Letters, 461 . pp. 61-72.
    Details
    Publication Date: 2020-02-06
    Description: Highlights • Dextral strike-slip faulting occurs offshore E Sicily above a lateral slab tear fault. • Proposed dextral Ionian Fault becomes sinistral to the south, in external wedge. • Compressional (folding and thrusting) tectonics occur throughout the wedge. • Morpho-tectonics indicate ongoing subduction and advance of Calabrian backstop. The detailed morphology and internal structure of the Calabrian accretionary wedge and adjacent Eastern Sicily margin are imaged in unprecedented detail by a combined dataset of multi-beam bathymetry and high-resolution seismic profiles. The bathymetric data represent the results of 6 recent marine geophysical surveys since 2010 as well as a compilation of earlier surveys presented as a 2 arc-sec (60 m) grid. Several distinct morpho-tectonic provinces are identified including: the deeply incised Malta–Hyblean Escarpment, numerous submarine canyons, broad regions of relatively flat seafloor dominated by fields of sediment waves, the gently undulating anticlinal fold-and-thrust belts of the external Calabrian accretionary wedge and the adjacent portion of the Western Mediterranean Ridge. The Calabrian arc can be divided into 4 domains (from SE to NW): 1) the undeformed Ionian abyssal plain, 2) the external evaporitic wedge, 3) the internal clastic wedge, 4) the Calabrian backstop (Variscan crystalline basement). The Calabrian accretionary wedge can also be divided laterally into two major lobes, the NE- and the SW lobes, and two minor lobes. The kinematics of the limit between the two major lobes is investigated and shown to be sinistral in the external (evaporitic) wedge. A network of radial slip lines within the southernmost external wedge unequivocally demonstrate ongoing dextral displacement of a rigid indenter (representing the corner of the clastic wedge) into the evaporitic wedge thereby confirming the geodynamic model of an active lateral slab tear fault here off eastern Sicily. The slab tear produces a series of major sub-parallel dextral strike-slip faults offshore Mt. Etna and south of the Straits of Messina consistent with the relative motions between Calabria and the Peloritan domain (NE Sicily). Abundant strike-slip faulting, and wide-spread folding and thrusting observed throughout the entire accretionary wedge, indicate regional shortening between the Ionian abyssal plain (foreland) and the Calabrian–Peloritan backstop caused by active subduction.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.epsl.2016.12.020
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Ionian Abyssal Plain: A window into the Tethys oceanic lithosphere (2019)
    In:  [Poster] In: EGU General Assembly 2019, 08.-13.04.2019, Vienna, Austria .
    Details
    Publication Date: 2019-05-13
    Type: Conference or Workshop Item , NonPeerReviewed
    Format: text
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    OceanRep: Poster
  • 6
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    Ionian Abyssal Plain: A window into the Tethys oceanic lithosphere (2019)
    Copernicus Publications (EGU)
    In:  Solid Earth, 10 (2). pp. 447-462.
    Details
    Publication Date: 2022-01-31
    Description: The nature of the Ionian Sea crust has been the subject of scientific debate for more than 30 years, mainly because seismic imaging of the deep crust and upper mantle of the Ionian Abyssal Plain (IAP) has not been conclusive to date. The IAP is sandwiched between the Calabrian and Hellenic subduction zones in the central Mediterranean. To univocally confirm the proposed oceanic nature of the IAP crust as a remnant of the Tethys ocean and to confute its interpretation as a strongly thinned part of the African continental crust, a NE-SW oriented 131 km long seismic refraction and wide-angle reflection profile consisting of eight ocean bottom seismometers and hydrophones was acquired in 2014. A P-wave velocity model developed from travel time forward modelling is refined by gravimetric data and synthetic modelling of the seismic data. A roughly 6km thick crust with velocities ranging from 5.1km/s to 7.2km/s, top to bottom, can be traced throughout the IAP. In the vicinity of the Medina Seamounts at the southern IAP boundary, the crust thickens to about 9km and seismic velocities decrease to 6.8km/s at the crust-mantle boundary. The seismic velocity distribution and depth of the crust-mantle boundary in the IAP document its oceanic nature, and support the interpretation of the IAP as a remnant of the Tethys oceanic lithosphere formed during the Permian and Triassic period.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.5194/se-10-447-2019
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Progetto SPOT - Sismicità Potenzialmente Innescabile Offshore e Tsunami: Report integrato di fine progetto (2020)
    Details
    Publication Date: 2021-01-27
    Description: Il progetto SPOT (Sismicità Potenzialmente innescabile Offshore e Tsunami) è stato sviluppato con lo scopo di supportare le Autorità italiane nell'applicazione della Direttiva Europea sulla sicurezza delle operazioni in mare nel settore degli idrocarburi (2013/30/EU), su fondi di cui art. 35 del Decreto Legge 83/2012, e dei decreti italiani che ne derivano (Antoncecchi et al., 2019). Il progetto, della durata di 21 mesi, è stato ideato e finanziato dal Ministero dello Sviluppo Economico italiano – Direzione Generale per la sicurezza delle attività minerarie ed energetiche (DGS-UNMIG) nell’ambito della rete di ricerca CLYPEA, con il supporto tecnico del Dipartimento della Protezione Civile nazionale.
    Description: Attività svolta nell'ambito del programma CLYPEA - Innovation Network for Future Energy, finanziato dal Ministero dello Sviluppo Economico su fondi per la "sicurezza offshore" ai sensi dell'art.35 D.L. 83/2012.
    Description: Published
    Description: 2T. Deformazione crostale attiva
    Description: 4T. Sismicità dell'Italia
    Description: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: 6T. Studi di pericolosità sismica e da maremoto
    Description: 4IT. Banche dati
    Keywords: Italia ; Mare Adriatico ; Mare Ionio ; Canale di Sicilia ; terremoto ; maremoto ; tsunami ; sismicità offshore ; frana sottomarina ; vulnerabilità del costruito ; scenario di impatto ; rischio sismico ; rischio tsunami ; sicurezza marina ; produzione idrocarburi ; 04.07. Tectonophysics ; 04.02. Exploration geophysics ; 05.08. Risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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    PAPER (OA)
  • 8
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    A New Digital Bathymetric Model of the World's Oceans (2015)
    Wiley
    In:  EPIC3Earth and Space Science, Wiley, 2, ISSN: 2333-5084
    Details
    Publication Date: 2015-08-10
    Description: General Bathymetric Chart of the Oceans (GEBCO) has released the GEBCO_2014 grid, a new digital bathymetric model of the world ocean floor merged with land topography from publicly available digital elevation models. GEBCO_2014 has a grid spacing of 30 arc seconds, and updates the 2010 release (GEBCO_08) by incorporating new versions of regional bathymetric compilations from the International Bathymetric Chart of the Arctic Ocean (IBCAO), the International Bathymetric Chart of the Southern Ocean (IBCSO), the Baltic Sea Bathymetry Database (BSBD), and data from the European Marine Observation and Data network (EMODnet) bathymetry portal, among other data sources. Approximately 33% of ocean grid cells (not area) have been updated in GEBCO_2014 from the previous version, including both new interpolated depth values and added soundings. These updates include large amounts of multibeam data collected using modern equipment and navigation techniques, improving portrayed details of the world ocean floor. Of all non-land grid cells in GEBCO_2014, approximately 18% are based on bathymetric control data, i.e., primarily multibeam and single beam soundings, or pre-prepared grids which may contain some interpolated values. The GEBCO_2014 grid has a mean and median depth of 3897 m and 3441 m, respectively. Hypsometric analysis reveals that 50% of the Earth's surface is comprised of seafloor located 3200 m below mean sea level, and that ~900 ship-years of surveying would be needed to obtain complete multibeam coverage of the world's oceans.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 9
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    Tsunamis From Submarine Collapses Along the Eastern Slope of the Gela Basin (Strait of Sicily) (2022)
    Frontiers Media S.A.
    Details
    Publication Date: 2022-02-11
    Description: Geophysical surveys in the eastern slope of the Gela Basin (Strait of Sicily, central Mediterranean) contributed to the identification of several episodes of sediment mass transport, recorded by scars and deposits of various dimensions within the Pleistocene succession. In addition to a huge failure called Gela Slide with volume exceeding 600 km3, the most studied events show volumes estimated between 0.5 and 1.5 km3, which is common to many other submarine landslide deposits in this region and that can therefore be considered as a characteristic value. In this work, the tsunamigenic potential of two of such landslides, the so-called Northern Twin Slide and South Gela Basin Slide located about 50 km apart along the eastern slope of the Gela Basin, are investigated using numerical codes that describe the onset and motion of the slide, as well as the ensuing tsunami generation and propagation. The results provide the wave height of these tsunami events on the coast of southern Sicily and Malta and can be taken as representative of the tsunamigenic potential of typical landslides occurring along the slope of the Gela Basin.
    Description: Published
    Description: 602171
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: tsunami ; landslide ; hydrosphere
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 10
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    The International Bathymetric Chart of the Southern Ocean Version 2 (2022)
    In:  EPIC3Scientific Data, 9(1), ISSN: 2052-4463
    Details
    Publication Date: 2024-01-26
    Description: The Southern Ocean surrounding Antarctica is a region that is key to a range of climatic and oceanographic processes with worldwide effects, and is characterised by high biological productivity and biodiversity. Since 2013, the International Bathymetric Chart of the Southern Ocean (IBCSO) has represented the most comprehensive compilation of bathymetry for the Southern Ocean south of 60°S. Recently, the IBCSO Project has combined its efforts with the Nippon Foundation – GEBCO Seabed 2030 Project supporting the goal of mapping the world’s oceans by 2030. New datasets initiated a second version of IBCSO (IBCSO v2). This version extends to 50°S (covering approximately 2.4 times the area of seafloor of the previous version) including the gateways of the Antarctic Circumpolar Current and the Antarctic circumpolar frontal systems. Due to increased (multibeam) data coverage, IBCSO v2 significantly improves the overall representation of the Southern Ocean seafloor and resolves many submarine landforms in more detail. This makes IBCSO v2 the most authoritative seafloor map of the area south of 50°S.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed
    Format: application/pdf
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