Antarctica Adventure - 2002

Terminal moraines are not visible until the glacier retreats and the front end of the piled up material can be seen. Of course, lateral moraines are the lines of materials shoved out of the way alongside the glacier’s path. Medial moraines, however, are most interesting. They are the product of two individual glaciers pushing around a mountain to meet on the other side. From there, they slide along each other, side by side, plowing up the rocky debris between themselves into a spine the medial moraine. So it’s really the lateral moraines of two glaciers blending their middle side piles into one on their way forward. Here at Devil Island, the phenomenon was quite dramatically demonstrated in a very dark and comparatively wide line between the united glaciers below the nunatak. When the sun shines in Antarctica, it creates a whole different world from that seen in the mists, fogs, snows, and overcast skies. Colors are revealed and continuously change in hue and saturation. All textures are sharply outlined and lined. Spotlights beam through holes in the clouds to pick out mountain tops and set them on fire from the inside so that they glow in many shades - from pinks and mauves to golds and silvers. Icebergs change most of all as they seem to leap to the forefront of your vision and vie for your attention with their incredible shapes, textures, and colors. Who would have thought that ice could take on such different looks? Some of them look like crystal almost transparent though they take on colors from deep green to sea foam green, to electric blues and pale turquoise to aqua. Others look like pewter and are that color as well. Still, others looked like unpolished jade both in color and surface quality. Then there are still more that look like floating rocks ochre and pale brown. The sea itself changes appearance sometimes cobalt blue, sometimes silver-plated, and then again dark and dirty gray, and then even more surprising, as turquoise as the Caribbean when sufficient glacier “milk” rides on the surface of the ocean from the melting glacial streams. Sometimes the surface of the sea is oily as the waves roll beneath an apparent covering sheen; sometimes the waves and the water look almost hard like a stone would bounce off it; other times it looks pockmarked and softer like a skin; then again it will be wild with froth and white-cap so that it’s hard actually to focus on the water itself. Another very interesting sea phenomenon was actually an incredible light display. In the Fridjhof Strait, we saw that the waves were actually outlined on wave crests with a black narrow line, still present even


Made with FlippingBook flipbook maker