- 行业: Earth science
- Number of terms: 10770
- Number of blossaries: 1
- Company Profile:
The UK charity dedicated to the protection of the marine environment and its wildlife.
An idealized vortex in unbounded fluid with uniform vorticity inside a circular patch and zero vorticity outside.
Industry:Earth science
A method of determining water depths by measuring the time lapse between the generation of an initial sound pulse on the ship and the return of the echo. With knowledge of the speed of sound in water, the depth of water can be calculated.
Industry:Earth science
A current produced in a body of water by blowing over the water surface. It flows to the right of the wind. Sometimes called wind drift; sometimes called drift current. Considerable evidence now exists to show that the Gulf Stream is such a current. Which of the ocean currents are wind driven and which thermally driven is a subject now under intensive investigation.
Industry:Earth science
A measure of planetary rotation as a function of latitude. The parameter denoted by f varies with latitude \phi according to f= 2\Omega\sin\phi, in which \Omega is the frequency of planetary rotation.
Industry:Earth science
A vertical salinity gradient in some layer of a body of water, which is appreciably greater than the gradients above and below it; also a layer in which such a gradient occurs. The principal haloclines in the ocean are either seasonal, due to fresh water inputs, or permanent.
Industry:Earth science
A system that measures in reference to the cardinal points of a compass in 90 degree quadrants.
Industry:Earth science
An instability of geostrophic (cyclostrophic) motion due to imbalance between pressure gradient and inertial forces for an infinitessimal disturbance that meridionally (radially) displaces fluid. For geostrophic motion in the Northern (Southern) Hemisphere, inertially instability may occur only if the absolute vorticity (f- \partial u_g/\partial y) is negative (positive). Here f is the Coriolis parameter, u_g the zonal component of geostrophic velocity, and y is distance in the meridional direction.
Industry:Earth science
A closed circulation system, ranging in size from a few hundred meters to thousands of kilometers; associated with the concentrated center of highest pressure in an anticyclone.
Industry:Earth science
உப்பு பளிங்காதல் வரை, கடல் நீரை நீராவியாக்குதலால் செறிவூட்டிய பின், எஞ்சுகின்ற மீதமுள்ள உப்புச் செறிவுற்ற திரவம் அடங்கிய உப்பளங்களின் ஒரு பகுதி.
Industry:Earth science
