This creates a boundary layer between light and heavy bodies of water. "Near the surface of the ocean, you might have the same density, salinity and temperature, and then you get to a point where there's a step change in density." This is because the density of the ocean changes from the surface to the bottom of the sea floor - the colder the water gets, the more dense it becomes.īut this change in density doesn't happen smoothly, says Stuart Corney, an oceanographer at the University of Tasmania's Institute for Marine and Antarctic Studies. Waves don't just occur on the surface, they're also generated in deeper water. The ocean is in a constant state of motion with the rise and fall of tides, currents and waves. sea water beach wind waves underwater ocean. While some speculated that the submarine was hit by a foreign missile or a power blackout, Indonesian authorities now suspect the submarine was pulled under by a powerful underwater current called an internal solitary wave. Download Ocean Royalty-Free Music & Sound Effects Audio Royalty-Free Music and Sound Effects. Indonesian military officials found the sunken vessel broken into three parts on the bottom of the Bali Sea. Last week an Indonesian submarine cruised through the Lombok Strait between the islands of Bali and Lombok to carry out routine testing.īut in the early hours of April 21, the 44 year-old KRI Nanggala 402 submarine dropped out of contact and plummeted 838 metres to the ocean floor, taking 53 crew members with it.
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