seafloor topography

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• Seafloor spreading — Age of oceanic crust; youngest (red) is along spreading centers. Seafloor spreading is a process that occurs at mid ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor… …   Wikipedia

• Dynamic topography — The term dynamic topography is used in geodynamics and oceanography to refer to elevation differences caused by the flow within the Earth s mantle and the ocean water, respectively. Geodynamics In geodynamics, dynamic topography refers to… …   Wikipedia

• Ocean surface topography — TOPEX/Poseidon was the first space mission that allowed scientists to map ocean topography with sufficient accuracy to study the large scale current systems of the world s ocean. Although this image was constructed from only 10 days of… …   Wikipedia

• Ocean Surface Topography Mission — OSTM/Jason 2 Artist s interpretation of the Jason 2 satellite Operator NASA, CNES, NOAA, EUMETSAT Mission type Earth orbiter …   Wikipedia

• Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY       In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …   Universalium

• Bathymetry — Present day Earth bathymetry (and altimetry). Data from the National Geophysical Data Center s TerrainBase Digital Terrain Model. Bathymetry is the study of underwater depth of lake or ocean floors. In other words, bathymetry is the underwater… …   Wikipedia

• Contourite — A contourite is a sedimentary deposit produced by thermohaline induced deepwater bottom currents and may be influenced by wind or tidal forces.[1][2] Most contourites are formed in continental rise to lower slope settings, although they may occur …   Wikipedia

• Atlantic Ocean — an ocean bounded by North America and South America in the Western Hemisphere and by Europe and Africa in the Eastern Hemisphere. ab. 31,530,000 sq. mi. (81,663,000 sq. km); with connecting seas ab. 41,000,000 sq. mi. (106,100,000 sq. km);… …   Universalium

• Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …   Universalium

• Oceanic crust — Age of oceanic crust. The red is most recent, and blue is the oldest. Oceanic crust is the part of Earth s lithosphere that surfaces in the ocean basins. Oceanic crust is primarily composed of mafic rocks, or sima, which is rich in iron and… …   Wikipedia

• Morphodynamics — Beach morphodynamics refers to the study of the interaction and adjustment of the seafloor topography and fluid hydrodynamic processes, seafloor morphologies and sequences of change dynamics involving the motion of sediment. Hydrodynamic… …   Wikipedia