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Ocean color is the branch of ocean optics that specifically studies the color of the water and information that can be gained from looking at variations in color. The color of the ocean, while mainly blue, actually varies from blue to green or even yellow, brown or red in some cases. [1]
Water color can reveal physical, chemical and bacteriological conditions. In drinking water, green can indicate copper leaching from copper plumbing and can also represent algae growth. Blue can also indicate copper, or might be caused by syphoning of industrial cleaners in the tank of commodes, commonly known as backflowing.
Most of the ocean is blue in color, but in some places the ocean is blue-green, green, or even yellow to brown. [64] Blue ocean color is a result of several factors. First, water preferentially absorbs red light, which means that blue light remains and is reflected back out of the water.
Hues of blue include indigo and ultramarine, closer to violet; pure blue, without any mixture of other colours; Azure, which is a lighter shade of blue, similar to the colour of the sky; Cyan, which is midway in the spectrum between blue and green, and the other blue-greens such as turquoise, teal, and aquamarine.
A blue-water navy is a maritime force capable of operating globally, essentially across the deep waters of open oceans. [1] While definitions of what actually constitutes such a force vary, there is a requirement for the ability to exercise sea control at long range.
A blue and white flag (the flag for the letter P) hoisted at the foretrucks of ships about to sail. Formerly a white ship on a blue ground, but later a white square on a blue ground. blue water 1. That part of the ocean lying more than a few hundred nautical mile s from shore, and thus beyond the outer boundary of green water. 2.
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The dark brown water in the inland waterways contains high concentrations of CDOM. As this dark, CDOM-rich water moves offshore, it mixes with the low CDOM, blue ocean water from offshore. Colored dissolved organic matter (CDOM) is the optically measurable component of dissolved organic matter in water.