A sailor and a man on shore, both sounding the depth with a line
Depth sounding, often simply called sounding, is measuring the depth of a body of water. Data taken from soundings are used in bathymetry to make maps of the floor of a body of water, such as the seabed topography.
Soundings were traditionally shown on nautical charts in fathoms and feet. The National Oceanic and Atmospheric Administration (NOAA), the agency responsible for bathymetric data in the United States, still uses fathoms and feet on nautical charts. In other countries, the International System of Units (metres) has become the standard for measuring depth.[1]
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"Sounding Pole to Sea Beam". National Oceanic and Atmospheric Administration. Retrieved 2012-07-07.
Depthsounding, often simply called sounding, is measuring the depth of a body of water. Data taken from soundings are used in bathymetry to make maps...
Echo sounding or depthsounding is the use of sonar for ranging, normally to determine the depth of water (bathymetry). It involves transmitting acoustic...
Look up sounding in Wiktionary, the free dictionary. Sounding or soundings may refer to: Sounding (archaeology), a test dig in archaeology "Sounding" (Justified)...
Bathymetric measurements are conducted with various methods, from depthsounding, sonar and Lidar techniques, to buoys and satellite altimetry. Various...
Vostok in Antarctica is a subglacial lake with a depth ranging from 510 to 900 meters. *CECS, Depthsounding of Lake O'Higgins/San Martín[permanent dead link]...
hydrography, the speed of sound must also be measured typically by deploying a sound velocity probe into the water. Echo sounding is effectively a special...
water depths Echo sounding: a technique using sound pulses to measure depthsounding line: a length of rope used to measure water depth This disambiguation...
Echo depthsounding is the process of finding the depth of the sea using this process.[citation needed] In the medical field, ultrasonic waves of sound are...
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 at...
watercourse. Its vertical position in maps is the nadir (greatest depth, sounding) in the stream profile. Under international law, a thalweg is instead...
Grand Banks off Newfoundland. In that test, Fessenden demonstrated depthsounding, underwater communications (Morse code) and echo ranging (detecting...
better. According to another source RV Stranger using bomb-sounding surveyed a maximum depth of 10,915 ± 10 m (35,810 ± 33 ft) at 11°20.0′N 142°11.8′E...
The Laser Airborne DepthSounder (LADS) Flight was a unit of the Royal Australian Navy. Unlike the rest of the flying units of the RAN, it was not controlled...
years after the Egyptians had begun sounding and mapping the Nile. The Greek historian Herodotus writes of a sounding in 66 feet of water of the mouth of...
Channel. Puget Sound extends approximately 100 miles (160 km) from Deception Pass in the north to Olympia in the south. Its average depth is 450 feet (140 m)...
returning soundwaves, producing a swathe of depth soundings from a single ping. Multibeam sonar sounding systems, also known as swathe (British English)...
scientific instrument for measuring water depth Bathymetry – Study of underwater depth of lake or ocean floors Depthsounding – Measuring the depths of a body...
acceptance authority. Traditionally conducted by ships with a sounding line or echo sounding, surveys are increasingly conducted with the aid of aircraft...
Agamemnon and the Great Eastern. Thomson introduced a method of deep-sea depthsounding, in which a steel piano wire replaces the ordinary hand line. The wire...
Early depthsounding was achieved using lead line sounding (or sounding line), where a lead weight attached to a length of rope marked with depth values...
do a survey or a poll". Sounding in the rocket context is equivalent to "taking a measurement". The basic elements of a sounding rocket are a solid-fuel...
In physics, optical depth or optical thickness is the natural logarithm of the ratio of incident to transmitted radiant power through a material. Thus...
radar range to a charted object, on certain coastlines, a depthsounding from echo sounder or hand lead line. There are some methods seldom used today...
fathomed by a hand sounding line, was referred to as out of soundings or off soundings. A deep-sea lead, the heaviest of sounding leads, was used in water...
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