Acoustical imaging of the nearshore seafloor depositions and deformations, a key study for Western Istanbul, Türkiye

ÖZGAN Sinan ALP Hakan BAYAT Oğuz VARDAR Denizhan

ÖZGAN Sinan, ALP Hakan, BAYAT Oğuz, VARDAR Denizhan. Acoustical imaging of the nearshore seafloor depositions and deformations, a key study for Western Istanbul, Türkiye[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2197-3
Citation: ÖZGAN Sinan, ALP Hakan, BAYAT Oğuz, VARDAR Denizhan. Acoustical imaging of the nearshore seafloor depositions and deformations, a key study for Western Istanbul, Türkiye[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2197-3

doi: 10.1007/s13131-023-2197-3

Acoustical imaging of the nearshore seafloor depositions and deformations, a key study for Western Istanbul, Türkiye

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  • Figure  1.  Location (a), bathymetry (b), regional geology maps of the study area (c) (Alp et al., 2018).

    Figure  2.  Acoustic returns of the seafloor formations.

    Figure  3.  The location map of the acoustic data (SSS, and SBP), and the mosaic map.

    Figure  4.  SSS ecograms showing the difference acoustic reflections.

    Figure  5.  Morphological structures formed on the seafloor.

    Figure  6.  Deformations caused by fishing and the boats on the seafloor (anchor and trawl web tracks).

    Figure  7.  Port and supply line feet view.

    Figure  8.  Pipelines, wreck, and rubble flow image.

    Figure  9.  Seafloor natural structures and formation types by seismic method (SBP Line 1) (a), Paleo Shoreline, gas, and formation types (SBP Line 2) (b), Formation types, rock exposure and pipeline view (SBP Line 3) (c).

    Figure  10.  Seafloor sediment distributions and deformation map.

    Table  1.   Acoustic returns and the outcrop features of the seafloor formations

    Map unit Acoustic reflection
    intensity
    Outcrops features
    Mud (M) weak smooth flat
    sandy Mud (sM) weak smooth flat
    muddy Sand (mS) medium smooth flat
    Sand(S) medium smooth flat
    Gravel (G) strong low relieve often covered with
    ripples or boulders
    Rock (R) strong high relief, fractures common
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