If the global population reaches 9.8 billion by 2050, the equivalent of almost three planets will be required to provide the natural resources needed to sustain current lifestyles. Our planet is running out of resources, but populations are continuing to grow. ( Políticas sobre copyright de la NASA o Políticas sobre la utilización de imágenes del Jet Propulsion Laboratory).Goal 12 is about ensuring sustainable consumption and production patterns, which is key to sustain the livelihoods of current and future generations. Las políticas sobre copyright de la NASA estipulan que «el material de la NASA no está protegido con copyright a menos que se indique lo contrario». Licencia Public domain Public domain false falseĮste archivo es de dominio público porque fue creado por la NASA. If you would like special permission to use, license, or purchase the image please contact me to negotiate terms. If you use one of my photos, please email me (account needed) or leave me a short message on my discussion page.ĭo not copy this image illegally by ignoring the terms of the license below, as it is not in the public domain. Please credit this with : Photo : Thomas Bresson or Video : Thomas Bresson in the immediate vicinity of the image. This photo / video was taken by Thomas Bresson. The differences in water color are due to changes in sediment. Between 20, the water levels in that part of the lake rebounded significantly and very small increases are visible throughout the rest of the time period. All of the water flowing into the desert basin from the Syrdar’ya now stays in the Northern Aral Sea. Completed in 2005, the dam was basically a death sentence for the southern Aral Sea, which was judged to be beyond saving. In a last-ditch effort to save some of the lake, Kazakhstan built a dam between the northern and southern parts of the Aral Sea. The loss of the moderating influence of such a large body of water made winters colder and summers hotter and drier. Croplands had to be flushed with larger and larger volumes of river water. The salty dust blew off the lakebed and settled onto fields, degrading the soil. The blowing dust from the exposed lakebed, contaminated with agricultural chemicals, became a public health hazard. The increasingly salty water became polluted with fertilizer and pesticides. Blowing dust (salt-laden sediments) covers a large part of the sea.Īs the lake dried up, fisheries and the communities that depended on them collapsed. The final image in the series is from the summer of 2009. Especially large retreats in the eastern lobe of the Southern Sea appear to have occurred between 20, and again between 20. The Southern Aral Sea had split into an eastern and a western lobe that remained tenuously connected at both ends.īy 2001, the southern connection had been severed, and the shallower eastern part retreated rapidly over the next several years. The Northern Aral Sea (sometimes called the Small Aral Sea) had separated from the Southern (Large) Aral Sea. At the start of the series in 2000, the lake was already a fraction of its 1960 extent (black line). This series of images from the Moderate Resolution Imaging Spectroradiometer ( MODIS) on NASA’s Terra satellite documents the changes in the the Aral Sea throughout the past decade. The lake they made, the Aral Sea, was once the fourth largest lake in the world.Īlthough irrigation made the desert bloom, it devastated the Aral Sea. Before the project, the two rivers left the mountains, cut northwest through the Kyzylkum Desert-the Syrdar’ya to the north and the Amudar’ya in parallel to the south-and finally pooled together in the lowest part of the desert basin. The region’s two major rivers, fed from snowmelt and precipitation in far-away mountains, were used to transform the desert into fields for cotton and other crops. English: In the 1960s, the Soviet Union undertook a major water diversion project on the arid plains of Kazakhstan, Uzbekistan, and Turkmenistan.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |