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Tasman Abyssal Plain
The Tasman Abyssal Plain, or the Eastern Australian Abyss, is an abyssal plain located off the coast of southeast Australia in the Tasman Sea. Extending from southern Queensland to Tasmania, the large submarine plain is distinguished by its delicately sloping terrain and abundant marine biodiversity. The plain's deep sea floor is notable for its important sedimentary deposits and exceptional geological formations, whereby showcasing the earth's physical history. Also known as the East Australian Basin and Tasman Basin, it is characterized by an average depth between and , with a diverse, though scarcely-explored, ecosystem. A world-first observation of the largely-unexplored abyssal plain took place in 2017, where it created high quality seafloor mapping of Australia's continental edge from southern Queensland to Tasmania. The sonar observation revealed that the continental slope to the eastern Australian abyss was more convoluted and craggy than expected, with the edge bei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymetry
Bathymetry (; ) is the study of underwater depth of ocean floors ('' seabed topography''), river floors, or lake floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography. The first recorded evidence of water depth measurements are from Ancient Egypt over 3000 years ago. Bathymetry has various uses including the production of bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the floor of water bodies, coastline analysis and ocean dynamics, including predicting currents and tides. Bathymetric charts (not to be confused with '' hydrographic charts''), are typically produced to support safety of surface or sub-surface navigation, and usually show seafloor relief or terrain as contour lines (called '' depth contours'' or '' isobaths'') and selected depths ('' soundings''), and typically also provide surface navigational information. Bathymetric maps (a more general term where navigational safet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
