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xitizap # 37 |
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gráfico [fonte: DNA (2008)] |
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Baixo Zambeze
jan 17, 2008 |
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Caia |
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xitizap # 37 |
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HCB - olha quem fala |
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Kariba - fev 12 |
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economicismo hidroeléctrico |
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por exemplo |
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ondas de cheias |
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Zambeze - jan 2008 |
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Zambeze - cronologia 1 |
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work in progress |
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2007- Cheias Zambeze 2007 / Zambezi floods 2007 |
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Barragem de Cahora Bassa
in
Apollo—Cahora Bassa Enigma and Diversions
by E. F. Raynham |
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intervalo de Cotas Cahora Bassa 2006-2008
[ 321— 325.5 m ] |
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At Cahora Bassa valve regulation of flow to the turbines is necessary between reservoir water levels of 310 m a.s.l. and the USL of 326 m a.s.l. to ensure a constant optimal flow of 452 m3/sec to each turbine which then produces its maximum design output of 415 MW. If the reservoir water level falls below 310 m a.s.l. the valves will be fully opened, but in spite of this a decrease in flow to the turbines will take place due to loss of hydraulic head. At a reservoir water level of 295 m a.s.l. (the upper edge of the turbine intake) flow decreases to 408 m3/sec and electrical output to 321.5 MW (Spencer, 1977). |
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Malawi |
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o Povo e o Rio |
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Zimbabwe |
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Cahora Bassa |
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O Rio Zambeze (centro de Moçambique) ainda subia de nível quando o MODIS (Moderate Resolution Imaging Spectroradiometer) no satélite Aqua da NASA capturou a imagem no topo a 15 de Janeiro 2008. Comparado com as condições a 26 de Dezembro (2007), três semanas antes, o rio estava kilómetros mais largo que o normal. Chuvas precoces que caíram na bacia do Rio Zambeze no Zimbabwe durante Dezembro (2007) carregaram a massiva albufeira de Cahora Bassa que era suposta controlar cheias no Zambeze. Em Janeiro 2008, foi descarregada água da albufeira o que levou a inundações a jusante.
As imagens mostram o Rio Zambeze a jusante da albufeira de Cahora Bassa junto às fronteiras das províncias de Sofala, Tete e Zambézia. A água é visualizada nas imagens a azul-escuro ou preto com recurso a infravermelhos e luz visível. A zona circundante coberta de vegetação é verde-brilhante, as nuvens dispersas são visualizadas a azul-pálido e branco. Terra nua é castanho-claro. Duas vezes por dia, o MODIS Rapid Response System disponibiliza imagens das cheias em Moçambique.
STATUS REPORT Date Released: Saturday, January 19, 2008 Source: NASA MODIS Web |
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The Zambeze (Zambezi) River in central Mozambique was still rising when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured the top image on January 15, 2008. Compared to conditions on December 26, three weeks earlier, the river was kilometers wider than normal. Early rains fell over the Zambeze River basin in Zimbabwe throughout December, taxing the massive Cahora Bassa reservoir meant to control flooding on the Zambeze. By January, water was being discharged from the reservoir, and this led to flooding downstream. The images show the Zambeze River downstream from the Cahora Bassa reservoir near the border of the Sofala, Tete, and Zambézia provinces. Water is dark blue or black in the images, which were made with infrared and visible light. The surrounding plant-covered land is bright green, and scattered clouds are pale blue and white. Bare earth is tan. Twice-daily images of the floods in Mozambique are available from the MODIS Rapid Response System.
STATUS REPORT Date Released: Saturday, January 19, 2008 Source: NASA MODIS Web |
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Baixo Zambeze
Fev 4, 2008 |