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Ocean color data is a key tool for research into how marine ecosystems respond to climate change and anthropogenic perturbations. [29] One of the biggest challenges for ocean color remote sensing is atmospheric correction, or removing the color signal of the atmospheric haze and clouds to focus on the color signal of the ocean water. [30]
Water in the open ocean appears clear and blue because it contains much less particulate matter, such as phytoplankton or other suspended particles, and the clearer the water, the deeper the light penetration. Blue light penetrates deeply and is scattered by the water molecules, while all other colours are absorbed; thus the water appears blue.
The same water in a smaller bucket looks only slightly cyan, [1] and observing the water at close range makes it appear colorless to the naked eye. The intrinsic color of liquid water may be demonstrated by looking at a white light source through a long pipe that is filled with purified water and closed at both ends with a transparent window.
Underwater photography is the process of taking photographs while under water. It is usually done while scuba diving , but can be done while diving on surface supply , snorkeling , swimming , from a submersible or remotely operated underwater vehicle , or from automated cameras lowered from the surface.
Clear Lake, one of California's oldest and most-visited lakes, is not so clear anymore after an algal bloom turned the water cloudy and green.. Images from NASA underscore the dramatic change in ...
The term "water quality" more broadly refers to many characteristics of water, including temperature, dissolved oxygen, the amount of nutrients, or the presence of algal blooms. How clear the water appears is only one component of water quality. [1] [5] [47] An underwater ecosystem can have high water clarity yet low water quality, and vice versa.
The satellite images below, from the NASA, show the lake in April 2022, at left — when it was at 40% capacity — and then a little over two weeks ago, when the lake was a lavish 96% full.
It is known for its crystal clear water and is surrounded by cottages on its shores. The blue waters of Blue Sea Lake, together with its dimensions and the absence of significant relief around, create the illusion of a sea. [1] It feeds the Blue Sea River which empties into the Picanoc River, in turn a tributary of the Gatineau River. Its name ...