Spinning through Bright Lights
Geysers are intermittent hot springs that regularly or irregularly erupt jets of hot water and steam. The plumbing system of geysers are usually constricted deep underground. The percolating ground-water is heated up to 400°F (200°C) by the magma chamber at shallow depths of several 1000 feet. Steam is created under conditions that prevent free circulation. The confined steam builds up pressure in the plumbing system until it attains enough force to be ejected through a vent at the surface. The eruption cycle depends on the supply of groundwater, a watertight plumbing system, heat supply by the magma chamber and the earthquake activity. Thermal activity can change significantly or even stop after earthquakes. This geyser ejects a fountain of boiling water and steam that is set into rotation while passing the vent. Millions of hot water droplets cool while spinning through the bright lights of the sun. Needles, thin plates and hollow columns of ice cause the thin cirrus cloud above the fountain to show iridescent colors.
August 2008
Canon 20D, Canon 10-22mm, f/16, 1 sec, ISO 100, tripod