Roger's SkyPix

Visual Effects

Ice Blue

Ice Blue

Blue in the sky, blue in the water, blue in the ice, the aura around the face of Lamplugh Glacier this day was nothing but cool hues. The reason is simple: Air, liquid water and ice all absorb shorter red and green wavelengths of light first. Under differential pressure, the surface of the glacier had been crumpled into miniature mountains and valleys, a microcosm of the very process which forms the real thing in slabs of continental rock. This resemblance wasn't lost on me while pondering both the erosive forces at work and the grand beauty of the scene.

76 NW Hoonah AK (31 Jul 3), looking SW.