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Back in the early-mid 20th century, before the development of sonar, the navy would have crews sail the ocean, and every so often measure the depth by dropping a weight tied to the end of the rope into the water. The rope was scaled, and the person would then record the depth on that ship's chart. After the development of sonar, however, this became a lot easier. Sonar is very accurate and works by measuring the time it takes for a sound wave to leave, bounce off an object, and come back. These sound waves are shot in all directions underwater, the time lengths are entered into a formula, and then an accurate depth is given. Now they can enter these depths into a computer to create a topographic map of the ocean floor; it is pretty sweet.
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ReneDeep ocean trenches were discovered using sonar technology, which sends sound waves to the ocean floor and measures their reflection. This technology allows scientists to create detailed maps of the ocean floor, revealing the presence of deep trenches. The first deep ocean trench to be discovered was the Mariana Trench in the western Pacific Ocean in the 1950s.
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During world war 2 what did scientist discover on the ocean floor?
During World War II, scientists discovered new deep-sea regions and features on the ocean floor, such as underwater mountain ranges and deep-sea trenches. These discoveries helped advance our understanding of the ocean's geology and biology, providing valuable information for future research and exploration.
Deep ocean trenches are evidence for?
Deep ocean trenches are evidence for plate tectonics, showing where one tectonic plate is subducting beneath another. These trenches form at convergent boundaries when the denser oceanic plate sinks into the mantle. The presence of deep ocean trenches also indicates areas of seismic activity and potentially tsunamis.
What are deep ocean trenches associated with?
Deep ocean trenches are associated with tectonic plate subduction, where one tectonic plate is forced beneath another into the mantle. This process leads to the formation of deep-sea trenches, which are the deepest parts of the ocean floor. Trenches are often sites of intense seismic activity and can also be locations where volcanic arcs form.
What percentage of the ocean bottom is covered by trenches?
Approximately 2.5% of the ocean bottom is covered by trenches, which are deep depressions in the ocean floor that form where tectonic plates collide and one plate is forced beneath the other. These trenches can be incredibly deep, with the Mariana Trench being the deepest known point in the ocean.
What type of scientist studies deep ocean trenches?
A marine geologist or marine geophysicist studies deep ocean trenches. They investigate the topography, geological processes, and tectonic activity of the ocean floor to better understand these unique and mysterious environments.
