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Desflorestação
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Ice
Análise de glaciares utilizando imagens de radarExpedição à AntárctidaAlterações climáticas e glaciaresRecuo dos glaciares nos AlpesFluxo de gelo glaciarMonitorização de glaciares nos HimalaiasDeteção remota de gelo e neve
Urbanização
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Vegetação
Área de Conservação de AnnapurnaPerdidos nos Andes!Área de Conservação de NgorongoroDelta Interior do NígerVegetação da América do Sul
 
 
 
 
Article Images
Socorro! Uma enorme maré negra está a aproximar-se da costa!
 
oil spill
Fast delivery SAR products are proving to be of great value in the optimisation of air-borne surveillance resources, due to the large area they can image at any one time. Experiments show that in general slicks larger than 0.05 km2 can be spotted by both aircraft and spaceborne SAR with the same reliability.

Credits: Swedish Space Corporation
 
 
ERS satellite
Download:
 HI RES JPG (Size: 378 kb)
Like its predecessor ERS-1 (launched in July 1991 by Ariane 4, the ERS-2 satellite (launched on 21 April 1995 also by Ariane 4) monitors the ground day and night under all weather conditions thanks to its powerful sharp-eyed, cloud-piercing radars. ERS-2 also carries an instrument to help monitor the ozone layer.

Credits: ESA
 
 
Black and white radar image of the ocean
Download:
 HI-RES JPEG (Size: 55 kb)
In a radar image, the ocean is not blue but black and white, and may also appear to have a lot of strange features. As a general rule, the brighter the sea surface, the rougher the sea (because wind speed is higher). But oil on the water dampens the rough surface and it becomes smooth again, and dark, as is shown in the image.
 
 
Coloured radar image of the ocean
Download:
 HI-RES GIF (Size: 115 kb)
This coloured radar image of the ocean is composed of 3 images taken on 3 different days. In order to distinguish the information coming from each of these days, each image was given a different colour:
  • 13 September 1991 is shown in red
  • 19 September 1991 is shown in green
  • 25 September 1991 is shown in blue
All images were acquired at the same time of the day - 10:20 GMT.
 
 
Oil slick is approaching the coast
Download:
 HI-RES JPEG (Size: 8 kb)
 


Derrames de Petróleo
Introdução
Exercícios
Contribuir para um oceano mais limpoDesastre ambiental numa plataforma petrolífera
Links
Norwegian Pollution Control Authority (SFT)
Eduspace - Software
LEOWorks 3
Eduspace - Download
Oil rig environmental disaster (PDF)Help! A huge oil slick is approaching the coast!Help! A huge oil slick is approaching the coast! (using LEOWorks)Help! A huge oil slick is approaching the coast! (report form)Contributing to a cleaner oceanContributing to a cleaner ocean (report form)Contribuir para um oceano mais limpo (LEOWorks)
 
 
 
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