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Bathymetric Survey

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D Ballas – One of the best experts on this subject based on the ideXlab platform.

  • morphotectonic structure of the western part of the north aegean basin based on swath bathymetry
    Marine Geology, 2002
    Co-Authors: D Papanikolaou, M Alexandri, Paraskevi Nomikou, D Ballas

    Abstract:

    Abstract The morphotectonic structure of the North Aegean Basin is studied on the basis of a new detailed swath Bathymetric Survey. The resulting Bathymetric map is presented in reduction with 20-m isobaths. The slope analysis gives an accurate scheme of the geometry of the basin and distinction of several sub-basins (approximately 20). The overall basin geometry is a rectangular tetrahedron shaped by the major slope discontinuity separating the continental platform from the continental slope. The area distribution with depth shows a maximum at depths between 300 and 450 m along the sub-horizontal edge of the continental platform and at depths between 1000 and 1200 m at the basinal areas of the sub-basins. The separation of the western part of the North Aegean Basin from the eastern part (Saros Bay) is very clear in the area between Limnos and Thasos, with a maximum depth of 490 m. The 3.2% of the basin area is characterized by slope values >20%, which correspond to active fault zones. Their trend is NE–SW (N46°) and NW–SE (N136°). Some secondary E–W faults are also present within the basin with morphological expression only on the orientation of slopes

D Papanikolaou – One of the best experts on this subject based on the ideXlab platform.

  • morphotectonic structure of the western part of the north aegean basin based on swath bathymetry
    Marine Geology, 2002
    Co-Authors: D Papanikolaou, M Alexandri, Paraskevi Nomikou, D Ballas

    Abstract:

    Abstract The morphotectonic structure of the North Aegean Basin is studied on the basis of a new detailed swath Bathymetric Survey. The resulting Bathymetric map is presented in reduction with 20-m isobaths. The slope analysis gives an accurate scheme of the geometry of the basin and distinction of several sub-basins (approximately 20). The overall basin geometry is a rectangular tetrahedron shaped by the major slope discontinuity separating the continental platform from the continental slope. The area distribution with depth shows a maximum at depths between 300 and 450 m along the sub-horizontal edge of the continental platform and at depths between 1000 and 1200 m at the basinal areas of the sub-basins. The separation of the western part of the North Aegean Basin from the eastern part (Saros Bay) is very clear in the area between Limnos and Thasos, with a maximum depth of 490 m. The 3.2% of the basin area is characterized by slope values >20%, which correspond to active fault zones. Their trend is NE–SW (N46°) and NW–SE (N136°). Some secondary E–W faults are also present within the basin with morphological expression only on the orientation of slopes

Salvatore Mazzola – One of the best experts on this subject based on the ideXlab platform.

  • multi resolution morpho Bathymetric Survey results at the pozzuoli baia underwater archaeological site naples italy
    Journal of Archaeological Science, 2013
    Co-Authors: Salvatore Passaro, Marco Arra, Roberto Saggiomo, Simone Di Giacomo, Antonio Leotta, Helge Uhle, Salvatore Mazzola

    Abstract:

    Here we show the results of two morpho-Bathymetric Surveys carried out on the underwater archaeological area of the Pozzuoli Bay (Naples, Italy). Such area is enclosed in the Campi Flegrei active volcanic complex, where bradyseism and recent volcanic activity strongly influenced the coastline shape over the last 2 Ka. The Digital Elevation Model (DTM) of the seafloor allowed to draw the main archaeological features of the Bay, that also include the military complex of Portus Iulius and the ancient thermal and villa complex of Baianus Lacus. The extraction of archaeological features from DTM was achieved thanks to the use of a GIS-derived tool based on the profile curvature algorithm. Thus, the Villa dei Pisoni (1st Century B.C.) and the thermal complex of Secca delle Fumose were investigated by using ultra-high resolution DTMs, that show the presence of Roman pilae for the protection of coastal buildings and also the inner planimetry of the Villa dei Pisoni complex. The observation of coastal engineering structures give also the opportunity to formulate some hypothesis on the evolution of morphology and of the sedimentary pattern of the area, while depth of archaeological remains allowed a rough computation of the rate of subsidence, resulted to be 2.55 (±0.5) mm/y for the Eastern sector (Pozzuoli) and 2.90 (±0.5) mm/y for the western (Baia).