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  2. General Bathymetric Chart of the Oceans - Wikipedia

    en.wikipedia.org/wiki/General_Bathymetric_Chart...

    GEBCO is the only intergovernmental body with a mandate to map the whole ocean floor. At the beginning of the project, only 6 per cent of the world's ocean bottom had been surveyed to today's standards; as of June 2022, the project had recorded 23.4 per cent mapped. About 14,500,000 square kilometres (5,600,000 sq mi) of new bathymetric data ...

  3. Bathymetry - Wikipedia

    en.wikipedia.org/wiki/Bathymetry

    Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount, or underwater mountain, depending on whether the depths increase or decrease going inward. [27]

  4. Bathymetric chart - Wikipedia

    en.wikipedia.org/wiki/Bathymetric_chart

    Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount, or underwater mountain, depending on whether the depths increase or decrease going inward. [2]

  5. Past sea level - Wikipedia

    en.wikipedia.org/wiki/Past_sea_level

    The scale of change during the last glacial/interglacial transition ... The depth of the ocean basins is a function of the age of ... the ocean began to rise briskly ...

  6. Rossby radius of deformation - Wikipedia

    en.wikipedia.org/wiki/Rossby_radius_of_deformation

    For a barotropic ocean, the Rossby radius is () /, where is the gravitational acceleration, is the water depth, and is the Coriolis parameter. [ 2 ] For f = 1×10 −4 s −1 appropriate to 45° latitude, g = 9.81 m/s 2 and D = 4 km, L R ≈ 2000 km; using the same latitude and gravity but changing D to 40 m; L R ≈ 200 km.

  7. Nautical chart - Wikipedia

    en.wikipedia.org/wiki/Nautical_chart

    Depending on the scale of the chart, it may show depths of water and heights of land , natural features of the seabed, details of the coastline, navigational hazards, locations of natural and human-made aids to navigation, information on tides and currents, local details of the Earth's magnetic field, and human-made structures such as harbours ...

  8. Douglas sea scale - Wikipedia

    en.wikipedia.org/wiki/Douglas_sea_scale

    The Douglas sea scale is a scale which measures the height of the waves and also measures the swell of the sea. The scale is very simple to follow and is expressed in ...

  9. Remote sensing (oceanography) - Wikipedia

    en.wikipedia.org/wiki/Remote_sensing_(oceanography)

    Ocean waves crash or disappear before a new observation is made, features with this time scale are rarer on land. Unlike vegetation, snow and other land covers the ocean is opaque to most electromagnetic radiation [ 9 ] (except for visible light) therefore the ocean surface is easy to monitor but it is a challenge to retrieve information of ...