A value named for this phenomenon can be given in terms of temperature, salinity, and depth by four empirical formulas named for Medwin, Mackenzie, Coppen, or Chen and Millero.
A value named for this phenomenon can be given in terms of temperature, salinity, and depth by four empirical formulas named for Medwin, Mackenzie, Coppen, or Chen and Millero. Governing equations of a technology that is named for, and uses, this phenomenon incorporate the directivity index as part of finding the detection threshold. A "mushroom" named for this phenomenon is a piezoelectric transducer made from PZT and called a tonpilz (TONE-pilts). It's not temperature, but the thermocline has a negative gradient in a characteristic value for this phenomenon, thus reflecting it. A side-scanning technology collects data derived from waves of this phenomenon with a towfish and can be used to construct a bathymetric profile. For 10 points, waves of what phenomenon are used by technology that detects objects underwater?
A value named for this phenomenon can be given in terms of temperature, salinity, and depth by four empirical formulas named for Medwin, Mackenzie, Coppen, or Chen and Millero.
sound waves [or noise; or acoustic vibrations; prompt on mechanical or pressure waves, or vibrations; do not accept "sonar"] 