Edge of Blue…
by Rodney Campbell on Apr.28, 2017, under Life, Photography
Back at the edge of the Blue Lake for the third day in a row…
One thing to note about the Blue Lake is that it is of course very blue. During December to March, the lake turns to a vibrant cobalt blue colour, returning to a colder steel grey colour for April to November.
Edge of Blue
FC330 + 3.6 mm @ 3.61 mm, 1/180 sec at f/2.8, ISO 100
Note: These photographs (especially the wider shots) look much better when larger. To see larger versions in an inline overlay slideshow gallery viewer click any of the images.
The exact cause of this phenomenon is still a matter of conjecture, but it is generally considered likely that it revolves around the warming of the surface layers of the lake during the summer months to around 20°C, causing calcium carbonate to precipitate out of solution and enabling micro-crystallites of calcium carbonate to form. This results in scatter of the blue wavelengths of sunlight.
On a clear blue sky day like today however. Around the edge of the lake where the water is shallow above the limestone beneath, you’d swear it glows a bright turquoise green.
Edge of Glow
FC330 + 3.6 mm @ 3.61 mm, 1/150 sec at f/2.8, ISO 100
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