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A current meter is an oceanographic device for flow measurement by mechanical, tilt, acoustical or electrical means.
How we measure currents. The two main components of currents are speed and direction. To measure a current, toss an object into the water and time how long it takes to get to a certain point a known distance away. Granted, technology allows us to be a little more accurate and sophisticated in our measurements.
1. What do we mean by "currents"? People have long tried to measure currents. It started with the measurement of boat speed through water. This is where the concept of “knots” came from. A more advanced level of sophistication in current measurement only became possible with the first use of propellers underwater, about a hundred years ago.
25 kwi 2017 · Water current is the rate of movement in the water, and ways to describe water current include its speed and direction. There are different types of water currents which behave in different ways because they are affected by separate variables.
What we mean by currents. current describes the movement of a body of water flowing in a definitive direction, as a result of a mixture of external forces (see box). Currents occur primarily in. horizontal direction but can vary considerably with time, depth and location. Real‐time accurate tide, wind and currents data, from.
‘water level’ would be more technically correct. The term ‘current’ similarly is accepted in many areas in connection with tidal currents; however water currents are greatly affected by much more than the tide producing forces. The term ‘flow’ is often used instead of currents.
2. Current Measurements for Oceans To measure the current velocity of water in the ocean, we have to distinguish first between direct and indirect methods. The latter try to determine currents by physical laws after measuring the distribution of water density and pressure, and we will look at these questions in the next section.
