|
|
Hard Core
Photograph by Peter Essick
Glaciologists Victor Zagorodnov, left, and Patrick Ginot extract a section of a 550-foot (170-meter) core from the summit of Peru's Quelccaya ice cap, at an elevation of about 18,600 feet (5,670 meters). The ratio of certain oxygen isotopes in the ice varies with temperature, enabling scientists to distinguish cold periods from warm periods over thousands of years. Rising temperatures are causing Quelccaya—the world's largest tropical ice cap—to retreat rapidly. Its major outlet glacier has receded nearly 3,100 feet (950 meters) since 1963—the smallest it's been in about 5,000 years.
|
Camera: Canon EOS 1V
Film Type: Fujichrome Provia 100
Lens: 17-35mm
Speed and F-Stop: 1/125 @ f/11 |
|
Weather Conditions: Sunny
Time of Day: Late afternoon
Lighting Techniques: Natural light |
|
