File:Lake Valencia, Venezuela ESA19427211.jpeg

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English: The Copernicus Sentinel-2 mission takes us over Lake Valencia, in northern Venezuela.
This false-colour image was processed in a way that makes vegetation of the Henri Pittier National Park, north of the lake, appear in fluorescent green. These bright colours contrast with the blackness of the lake.
With a surface area of 370 sq km, Lake Valencia formed a few million years ago and is now a reservoir for the cities of Valencia on the west shores and Maracay on the east shores.
Unfortunately, the inflow of untreated wastewater from the surrounding industrial and agricultural lands has led to the lake to become contaminated. The lake now suffers from algal blooms and between 1960 and 1990 it lost over 60% of its native fish species.
It was at this very lake that the German naturalist and explorer, Alexander von Humboldt, witnessed how human behaviour could cause harm to our natural ecosystem and climate. During his travels in the late 18th century, he noted the surrounding barren land which had been cleared for plantations and crops for sugar and tobacco. He attributed the decreasing water levels in the lake to climate change.
“When forests are destroyed, the springs are entirely dried up,” he wrote in his travel report, the Relation historique du voyage aux régions équinoxiales du nouveau continent (1814-17). “The beds of the rivers are converted into torrents whenever great rains fall on the heights…Hence it results, that the destruction of forests, the want of permanent springs, and the existence of torrents, are three phenomena closely connected together.”
The now poor-quality waters of Lake Valencia prevent the development of tourism and recreational activities in the region.
Copernicus Sentinel-2 is a two-satellite mission. Each satellite carries a high-resolution camera that images Earth’s surface in 13 spectral bands. The mission is mostly used to track changes in the way land is being used and to monitor the health of vegetation.
This image, which was captured on 2 February 2019, is also featured on the Earth from Space video programme.
Español: La misión Copernicus Sentinel-2 nos lleva sobre el lago Valencia, en el norte de Venezuela.

Esta imagen de color falso se procesó de una manera que hace que la vegetación del Parque Nacional Henri Pittier, al norte del lago, aparezca en verde fluorescente. Estos colores brillantes contrastan con la negrura del lago.

Con una superficie de 370 km2, el lago Valencia se formó hace unos millones de años y ahora es un embalse para las ciudades de Valencia en las costas occidentales y Maracay en las costas orientales.

Desafortunadamente, la entrada de aguas residuales no tratadas de las tierras industriales y agrícolas circundantes ha llevado al lago a contaminarse. El lago ahora sufre de floraciones de algas y entre 1960 y 1990 perdió más del 60% de sus especies de peces nativos.

Fue en este mismo lago donde el naturalista y explorador alemán Alexander von Humboldt fue testigo de cómo el comportamiento humano podría dañar nuestro ecosistema y clima naturales. Durante sus viajes a fines del siglo XVIII, observó las tierras áridas circundantes que habían sido taladas para plantaciones y cultivos para azúcar y tabaco. Él atribuyó la disminución de los niveles de agua en el lago al cambio climático.

"Cuando se destruyen los bosques, los manantiales se secan por completo", escribió en su informe de viaje, Relation historique du voyage aux régions équinoxiales du nouveau continent (1814-17). "Los lechos de los ríos se convierten en torrentes cada vez que caen grandes lluvias en las alturas ... Por lo tanto, la destrucción de los bosques, la falta de manantiales permanentes y la existencia de torrentes son tres fenómenos estrechamente conectados".

Las aguas de mala calidad del lago de Valencia impiden el desarrollo de actividades turísticas y recreativas en la región.

Copérnico Sentinel-2 es una misión de dos satélites. Cada satélite lleva una cámara de alta resolución que toma imágenes de la superficie de la Tierra en 13 bandas espectrales. La misión se usa principalmente para rastrear cambios en la forma en que se usa la tierra y para monitorear la salud de la vegetación.

Esta imagen, que fue capturada el 2 de febrero de 2019, también aparece en el programa de video Earth from Space .

Créditos: contiene datos modificados de Copernicus Sentinel (2019), procesados ​​por ESA, CC BY-SA 3.0 IGO
Date 7 June 2019 (upload date)
Source Lake Valencia, Venezuela
Author European Space Agency
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Sentinel-2
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Earth observation image of the week
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Copernicus

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© This image contains data from a satellite in the Copernicus Programme, such as Sentinel-1, Sentinel-2 or Sentinel-3. Attribution is required when using this image.
Attribution: Contains modified Copernicus Sentinel data 2019

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