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Geocaching (/ ˈ dʒ iː oʊ k æ ʃ ɪ ŋ /, JEE-oh-KASH-ing) is an outdoor recreational activity, in which participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called geocaches or caches, at specific locations marked by coordinates all over the world. [2]
The SOFAR channel (short for Sound Fixing and Ranging channel), or deep sound channel (DSC), is a horizontal layer of water in the ocean at which depth the speed of sound is minimal, in average around 1200 m deep. [2] It acts as a wave-guide for sound, and low frequency sound waves within the channel may travel thousands of miles before ...
The ocean is an incredible place. Although more than 70 percent of the Earth's surface is covered by water, there is still so much we don't know about its depths.
The Train is the name given to a sound recorded on March 5, 1997, on the Equatorial Pacific Ocean autonomous hydrophone array. The sound rises to a quasi-steady frequency. According to the NOAA, the origin of the sound is most likely generated by a very large iceberg grounded in the Ross Sea, near Cape Adare. [10
Rhode Island Sound, shown in pink. Rhode Island Sound is a marine sound off the coast of the U.S. state of Rhode Island at the mouth of Narragansett Bay.It forms the eastern extension of Block Island Sound and opens out the Atlantic Ocean between Block Island and Martha's Vineyard.
Technology including sonar, which uses sound waves to identify objects in water, and remotely operated vehicles have explored the dark ocean depths, revealing unknown species, geological features ...
Ballycotton Sound, that separate the islands from the mainland; Aran Islands. North Sound / An Súnda ó Thuaidh (more accurately Bealach Locha Lurgan) lies between Inishmore and Lettermullen, County Galway. Gregory's Sound / Súnda Ghríoghóra (formerly known as Bealach na h-Áite) lies between Inishmore and Inishmaan.
Long Island Sound is a marine sound and tidal estuary of the Atlantic Ocean. It lies predominantly between the U.S. state of Connecticut to the north and Long Island in New York to the south. From west to east, the sound stretches 110 mi (180 km) from the East River and the Throgs Neck Bridge in New York City, along the North Shore of Long ...