The depth in a lake, measured in meters, to which a Secchi disk can be observed, as a measure of light penetration in water. The Secchi disk is lowered into a section of shaded water until it can no longer be seen and then lifted back up until it can be seen once again. Averaging the two depths gives the clarity of the water
The depth at which the Secchi disk disappears from sight when lowered into a water body.
A black and white plate sized disc is lowered into the water column, the depth in the water that it can no longer be seen is the secchi depth, used for measuring water clarity
Measure of transparency of water obtained by lowering a 10 cm black and white disk into water until it is no longer visible.
An eight inch disk with black and white quandrants used to determine water clarity.
A relatively crude measurement of the turbidity (cloudiness) of surface water. The depth at which a Secchi Disc (Disk), which is about 10-12 inches in diameter and on which is a black and white pattern, can no longer be seen.
The depth in water to which a Secchi disc (a 20-cm diameter disc with alternating black and white quadrants) can be seen from the surface. Secchi depth is an easy measurement of water transparency.
(pronounced "secky") a measurement that indicates water clarity. Traditionally, the transparency or water clarity of a waterbody has been measured by using an 8-inch diameter disc called a "Secchi disc," that was named in honor of its inventor. To use the Secchi disc to measure water clarity, it's lowered into the water to find the depth at which it first appears to vanish from the observer's sight.
A parameter used to determine the clarity of surface waters, using a secchi disk.
A visual measure of water clarity, this is the depth at which the pattern on a Secchi disk containing black-and-white markings can no longer be distinguished under water.
Measure of transparency of water obtained by lowering a 10 inch black and white (or all white) disk into water until it can no longer be seen. The Secchi depth is the length of line let out by the observer between when the disk disappears from view and then re-appears with lowering and raising through the water column.
