|  bisher 224 mal gesehen | | Zurück zum Bericht | alle Bilder dieser Serie | alle Bilder dieses Autors |  Foto | Foto 5 von 23 | Foto  |  | Peru - Satellitenaufnahme
The true-color image above shows a patch of bright water off the coast of Chincha Alta, Peru, roughly 200 km (124 miles) south of Lima. The scene was acquired on February 23, 2004, by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Aqua Satellite. The bright yellow-green coloration of the water is probably the result of biological activity—possibly some species of algae.
The waters along the west coast of South America are some of the most biologically fertile in the world. This is due mainly to the Humboldt Ocean Current—a very cold, deep current flowing from Antarctica past the southern tip of Chile and northward to Peru. Off Peru, the icy waters of the Humboldt Current upwell and bring a steady supply of sulfates and phosphates from the depths to the surface. With an abundance of these nutrients brought up to the surface, a wide range of tiny ocean organisms flourish and reproduce in great numbers. Among these organisms are diatoms, phytoplankton, and zooplankton—collectively, forming the foundation of the marine food chain.
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| | Aktueller Bericht: Peru - Inka, Machu Picchu, + Die Linien von Nasca ... | | Autor des Berichts: Achim Schneider | | erstellt: 21.01.2005 | | bisher gesehen: 224 mal | | Stichworte: Peru, Abenteuer, Inkas, Linien von Nasca, Trekking, Machu Picchu |
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