The measurement of depths of water in oceans, seas, and lakes; also information derived from such measurements.

A float, particularly a floating object moored to the bottom to mark a channel, anchor, shoal, rock, etc.

The estimated minimum barometric pressure in the eye (approximate center) of a particular hurricane. The CPI is considered the most stable index to intensity of hurricane wind velocities in the periph [..]

A line on a map or chart representing points of equal elevation with relation to a datum. It is called an isobath when connecting points of equal depth below a datum and an isobar when used to represe [..]

Water so deep that surface waves are little affected by the ocean bottom. Generally, water deeper than one-half the surface wavelength is considered deep water.

In wave forecasting, the length of time the wind blows in nearly the same direction over the fetch (generating area).

A circular movement of water formed on the side of a main current. Eddies may be created at points where the main stream passes projecting obstructions or where two adjacent currents flow counter to e [..]

In meteorology, usually the "eye of the storm" (hurricane/typhoon); the roughly circular area of comparatively light winds and fair weather found at the center of severe tropical cyc [..]

The area in which seas are generated by a wind having a fairly constant direction and speed. Sometimes use synonymously with fetch length. Also generating area.

The horizontal distance (in the direction of the wind) over which a wind generates seas or creates a wind setup.