acoustic depth sounding

См. также в других словарях:

• Acoustic thermometry — of Ocean Climate (ATOC) is an idea to observe the state of the world s oceans, and the ocean climate in particular, using long range acoustic transmissions. Prototype measurements of temperature have been made in the North Pacific Basin and… …   Wikipedia

• Ocean acoustic tomography — The western North Atlantic showing the locations of two experiments that employed ocean acoustic tomography. AMODE, the Acoustic Mid Ocean Dynamics Experiment (1990 1), was designed to study ocean dynamics in an area away from the Gulf Stream,… …   Wikipedia

• Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …   Wikipedia

• Anti-frogman techniques — are security methods developed to protect watercraft, ports and installations, and other sensitive resources both in or nearby vulnerable waterways from potential threats or intrusions by frogmen or other divers.Risks and threats to be defended… …   Wikipedia

• sonar — /soh nahr/, n. 1. a method for detecting and locating objects submerged in water by echolocation. 2. the apparatus used in sonar. Also called, Brit., asdic. [1940 45; so(und) na(vigation) r(anging)] * * * Technique for detecting and determining… …   Universalium

• Underwater archaeology — is the study of past human life, behaviours and cultures using the physical remains found in salt or fresh water or buried beneath water logged sedimentMuckelroy, K., Maritime archaeology. Cambridge University Press 1978. ISBN 0 521 29348 0] . It …   Wikipedia

• Bathymetry — Present day Earth bathymetry (and altimetry). Data from the National Geophysical Data Center s TerrainBase Digital Terrain Model. Bathymetry is the study of underwater depth of lake or ocean floors. In other words, bathymetry is the underwater… …   Wikipedia

• Parametric array — The parametric array is a nonlinear transduction mechanism that generates narrow, nearly sidelobe free beams of low frequency sound, through the mixing and interaction of high frequency sound waves, effectively overcoming the diffraction limit (a …   Wikipedia

• Acoustical oceanography — is the use of underwater sound to study the sea, its boundaries and its contents.HistoryThe earliest and most widespread use of sound and sonar technology to study the properties of the sea is the use of an echo sounder to measure water depth.… …   Wikipedia

• Remote sensing — There are two kinds of remote sensing. Passive sensors detect natural energy (radiation) that is emitted or reflected by the object or surrounding area being observed. Reflected sunlight is the most common source of radiation measured by passive… …   Wikipedia

• sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …   Universalium