First off, here are the average depths of the earth's oceans; the Arctic Ocean is 1, meters 3, feet deep, the Indian Ocean is 3, meters 12, feet deep, the Atlantic Ocean is 3, meters 10, feet deep and the Pacific Ocean is 4, meters 13, feet deep. The deepest point in each of the earth's oceans are as follows; the Arctic Ocean's Eurasian Basin at 5, meters 17, feet deep, the Indian Ocean's Java Trench at 7, meters 25, feet deep, the Atlantic Ocean's Puerto Rico Trench at 8, meters 28, feet deep and the Pacific Ocean's Mariana Trench at 11, meters 36, feet deep.
This depth was reached in by the Trieste, a manned submersible owned by the U. In order to better illustrate the actual depth of the Mariana Trench, consider the following; if Mount Everest, which is the tallest point on earth at 8, meters 29, feet , were set in the Mariana Trench, there would still be 2, meters 7, feet of water left above it.
The Mariana Trench is often used as a North-South passage by submarines as it is part of a long system of trenches that circle the Pacific Ocean, connected with the Japan and Kuril Trenches. The search for the missing MH airplane also resulted in a terrain map covering a part of the Indian Ocean. After travelling 45, kilometers and completing 39 dives, FDE mapped , square-kilometers producing a high-resolution map of the seafloor of which 61 percent comprised new coverage over areas never before surveyed and about 30 percent was acquired from some of the ocean's deepest trenches and fracture zones.
Map showing publicly available global bathymetry of the seafloor. Red circles indicate the deepest This is a BETA experience. You may opt-out by clicking here. More From Forbes. Nov 10, , pm EST. But within that was an area the size of Finland that was totally new, where the seafloor had never been seen before," explained team-member Dr Heather Stewart from the British Geological Survey. All of this information is being handed over to the Nippon Foundation-GEBCO Seabed Project , which aims to compile, from various data sources, a full-ocean depth map by the end of the decade.
It would be a critical resource. Better seafloor maps are needed for a host of reasons. They are essential for navigation, of course, and for laying underwater cables and pipelines. They are also important for fisheries management and conservation, because it is around the underwater mountains that wildlife tends to congregate.
Each seamount is a biodiversity hotspot. In addition, the rugged seafloor influences the behaviour of ocean currents and the vertical mixing of water. This is information required to improve the models that forecast future climate change - because it is the oceans that play a pivotal role in moving heat around the planet. And if you want to understand precisely how sea-levels will rise in different parts of the world, good ocean-floor maps are a must.
Team-member and co-author on the new paper, Prof Alan Jamieson, is still aboard. He said the research ship was making discoveries every time it sent instrumentation into the deep.
Just last month, we recorded a jellyfish 1,m deeper than 9,m, which was the previous record by us. So we've now got jellyfish down to 10,m. A squid at that depth! How did we not know this?
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