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A sample of seawater from most locations with a chlorinity of 19.37 ppt will have a Knudsen salinity of 35.00 ppt, a PSS-78 practical salinity of about 35.0, and a TEOS-10 absolute salinity of about 35.2 g/kg. The electrical conductivity of this water at a temperature of 15 °C is 42.9 mS/cm. [6] [12]
The salinity in isolated bodies of water can be considerably greater still – about ten times higher in the case of the Dead Sea. Historically, several salinity scales were used to approximate the absolute salinity of seawater. A popular scale was the "Practical Salinity Scale" where salinity was measured in "practical salinity units (PSU)".
A salinometer. A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.. Since the salinity affects both the electrical conductivity and the specific gravity of a solution, a salinometer often consist of an ec meter or hydrometer and some means of converting those readings to a salinity reading.
Its salinity is about 3.5% or 35 ppt (parts per thousand). ... The five highest ocean heat observations to a depth of 2000 meters occurred in the period 2019–2023.
The same percentage falls in a salinity range between 34 and 35 ppt (3.4–3.5%) (Pinet 1996). There is still quite a bit of variation, however. Surface temperatures can range from below freezing near the poles to 35 °C in restricted tropical seas, while salinity can vary from 10 to 41 ppt (1.0–4.1%). [5]
I WORK IN A WATER LABORATORY IN A SEA WATER INJECTION FACILITY. THE SALINITY METER I USE SHOWS SALINITY IN PERCENTAGE. WHAT DOES IT ACTUALLY MEAN? DOES 35% SALINITY MEAN THAT THERE IS 35 GRAMS OF SALT IN 100 GRAM WATER? The measurement "parts per thousand or ppt or o/oo" is a ratio just as is percentage (or parts per hundred or %).
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In fractions like "2 nanometers per meter" (2 n m / m = 2 nano = 2×10 −9 = 2 ppb = 2 × 0.000 000 001), so the quotients are pure-number coefficients with positive values less than or equal to 1. When parts-per notations, including the percent symbol (%), are used in regular prose (as opposed to mathematical expressions), they are still pure ...