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  • Southern Tyrrhenian Sea
  • MDPI  (2)
  • 2020-2024  (2)
  • 2015-2019
  • 1945-1949
  • 1
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    New Seismoacoustic Data on Shallow Gas in Holocene Marine Shelf Sediments, Offshore from the Cilento Promontory (Southern Tyrrhenian Sea, Italy) (2023)
    MDPI
    Details
    Publication Date: 2023-01-18
    Description: High-resolution seismoacoustic data represent a useful tool for the investigations of gascharged sediments occurring beneath the seabed through the identification of the diagnostic intrasedimentary features associated with them. Acoustic blanking revealed shallow gas pockets in the seismostratigraphic units of the inner shelf off the Northern Cilento promontory. Six main seismostratigraphic units were recognized based on the geological interpretation of the seismic profiles. Large shallow gas pockets, reaching a lateral extension of 1 km, are concentrated at the depocenter of Late Pleistocene–Holocene marine sediments that are limited northwards by the Solofrone River mouth and southwards by the Licosa Cape promontory. A morphobathymetric interpretation, reported in a GIS environment, was constructed in order to show the main morphological lineaments and to link them with the acoustic anomalies interpreted through the Sub-bottom chirp profiles. A newly constructed workflow was assessed to perform data elaboration with Seismic Unix software by comparing and improving the seismic data of the previously processed profiles that used Seisprho software. The identification of these anomalies and the corresponding units from the offshore Cilento promontory represent a useful basis for an assessment of marine geohazards and could help to plan for the mitigation of geohazards in the Cilento region.
    Description: Published
    Description: 1992
    Description: 1T. Struttura della Terra
    Description: JCR Journal
    Keywords: high-resolution seismic profiles ; shallow gas ; Southern Tyrrhenian Sea ; seismic processing ; acoustic anomalies ; Cilento promontory
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 2
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    A Seismo-Stratigraphic Analysis of the Relict Deposits of the Cilento Continental Shelf (Southern Italy) (2023)
    MDPI
    Details
    Publication Date: 2023-06-05
    Description: The relict (palimpsest and lowstand) deposits of the Cilento continental shelf were analyzed based on the geological interpretation of Sub-Bottom Chirp sections, calibrated with core data. A progradational unit, which is overlying the acoustic basement, is interpreted as the beach deposits of the isotopic stages 4 and 5. This unit is overlain by a seismo-stratigraphic unit, which is composed of coarse-grained organogenic sands and interpreted as relict sands. This unit consists of sandy ridges, occurring at water depths ranging between 130 and 140 m, and was interpreted as an example of submerged beach deposits, genetically related to the marine isotopic stage 2 (Last Glacial Maximum; starting date 29 ky B.P.).
    Description: Published
    Description: 87
    Description: Virtual conference
    Description: 1T. Struttura della Terra
    Description: N/A or not JCR
    Keywords: relict deposits ; palimpsest deposits ; lowstand deposits ; Southern Tyrrhenian Sea ; seismo-stratigraphic analysis ; Cilento continental shelf
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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