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How is water clarity measured in environmental assessments?

Water clarity in environmental assessments is typically measured using a device called a Secchi disk. This disk is lowered into the water until it is no longer visible, and the depth at which it disappears is recorded as a measure of water clarity.


How can one accurately measure water clarity and what methods are used to do so?

Water clarity can be accurately measured using a device called a Secchi disk, which is a simple tool lowered into the water to determine the depth at which it becomes invisible. Another method is using a turbidity meter, which measures the amount of light scattered by particles in the water. These methods help scientists assess the transparency of water and monitor changes in water quality.


What does it mean when a scientist says a lake has high turbidity?

Turbidity is the cloudiness that is sometimes seen in water. It is caused by very small particles of clay, silt or organic material in the water. To say water is highly turbid means it is very cloudy. Turbidity is measured either in the lab by measuring how much light is decreased as it passes through a water sample or in the field by dropping a Secchi disk into the water and measuring how far down it can be seen.


Is the photic zone two times secchi depth?

Yesterday I measured Secchi disk transparency and compared that with simultaneous photometer measurements in a subtropical estuary. The lower border of the photic zone (1% of surface irradiance) according to my YSI photometer was at a depth of 4.7 m , while Secchi reading was at 1.6 m. Multiplying 1.6 by 2 gives 3.2, which is significantly lower than 4.7 m. Before that observation I believed in the "double-Secchi rule".


What has the author L M Fuller written?

L. M. Fuller has written: 'Predicting lake trophic state by relating Secchi-disk transparency measurements to Landsat-satellite imagery for Michigan inland lakes, 2003-05 and 2007-08' -- subject(s): Secchi disks, Landsat satellites, Remote sensing, Measurement, Water quality, Lakes 'Predicting water quality by relating secchi-disk transparency and chlorophyll a measurements to satellite imagery for Michigan inland lakes, August 2002' -- subject(s): Environmental aspects of Lakes, Lakes, Remote sensing, Water quality


Is water a transluscent?

Basically we See that water creates shadow so we conclude that it is opaque but we can c through the water also so it is transparent also .We shadow of water coz when water runs it made up of bubbles and a bubble has a curved surface so when light strikes the curved surface refraction takes place so there is a formation of shadow


Why does your water meter make a loud ticking sound?

A loud ticking sound from your water meter could be due to the internal mechanism responsible for measuring water flow. This ticking noise is typically normal operation and helps track water usage. If the sound suddenly changes or becomes excessively loud, it's best to contact your water utility to ensure everything is functioning properly.


How do I test the speed of my external hard disk?

You can test the speed of an external hard disk by transferring a large file to it and measuring how long it takes. This will provide an accurate measurement of how fast it can transfer data.


Is it OK to wipe a playstation 3 game off with water?

you can but you need to use a special disk cleaner dont apply too much water or it will destroy the disk


What measuring tools do mechanics use?

Tape measures Calipers Tachometer (measures the rotation speed of a shaft or disk, as in a motor or other machine


What disk limits disk space usage to user?

The disk size is defined by the manufacturer. You can't store more information than the disk can hold, just like you can't store more water in a jar that it can hold.


A plastic disks density is less than water but greater than oil if you put all three together in a glass container where would you see the plastic disk?

The plastic disk would float on top of the water but sink below the layer of oil in the glass container. This is because the density of the plastic disk is in between that of water and oil.