Envisat

EOLi (Earth Observation Link ) i

Enhancing surface deformation mapping through Sentinel-1A

Comparing surface deformation data through Envisat and Sentinel-1A data over Bay of Naples in Italy (Image: ESA)

The remote sensing technique to map ground deformation is being improved thanks to scientific work based on frequent observations from the Sentinel-1A radar satellite data.

The one-year old satellite data has been compared with those from the ERS and Envisat, former satellite radar missions. This work has enabled researchers of Italy’s Institute for Electromagnetic Sensing of the Environment (IREA-CNR) to show a drastic improvement in mapping surface deformation and to draw a new path for earthquake and volcano monitoring.

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Publishing Date: 

Tue, 09/06/2015 - 09:51

Water quality of European lake measured from space

Satellite image of Lake Balaton (Image: Viktor Tóth)

Satellite technology allows to assess the quality of water on Earth through the visualization of pollution levels otherwise invisible to the human eye, as a recent study shows.

Publishing Date: 

Thu, 05/03/2015 - 09:39

PolSARpro (The Polarimetric SAR Data Processing and Educational Tool) (ESA)

ESA: Making satellite flood maps easily available

ESA's Fully Automated Aqua Processing Service (FAAPS)

The European Space Agency ESA has helped to create a service that makes flood maps available simply via the Internet. In a disaster flood situation, ground and airborne sensors often reach their limits due bad weather, cloud covers or inaccessible terrain. The availability of satellite data is therefore crucial.

Publishing Date: 

Mon, 07/10/2013 - 08:20

BEAT Basic Envisat Atmospheric Toolbox (ESA)

Envisat-Meris images available free of charge

The VITO image processing team in collaboration with ESA and Belgian Science Policy announced a new free product in the world of low resolution Earth observation data, the global Envisat-MERIS 10-daily composites at 1 km resolution (EM10). The Envisat-Meris S10 or "EM10" are near-global, 10-daily composite images which are synthesised from the "best available" observations registered in the course of every "dekad" by the orbiting earth observation system Envisat-Meris.

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Publishing Date: 

Sun, 27/01/2013 - 08:21

ESA Satellites keep an eye on Dutch dikes

In the Netherlands, local authorities are looking to satellite observations as a promising option for dike monitoring and to protect against dike failures. In a recently completed Terrafirma study, the IJsselmeer dikes were checked using radar data from ESA's Envisat satellite for the period 2003–10. Results show that a large stretch of the dike near the town of Medemblik is subsiding up to 5 mm per year.

Publishing Date: 

Wed, 24/10/2012 - 11:01

International Charter: New issue of Newsletter available

The second issue of Newsletter takes a glance at types and frequency of Charter activations in 2011, which, as it says, has been a busy year for the Charter Member Agencies.

Publishing Date: 

Wed, 30/05/2012 - 10:43

UN-SPIDER April 2012 Updates

Issue Date: 

Fri, 04/05/2012
English

The UN-SPIDER April 2012 Updates contain the following topics:

UN-SPIDER at a glance:

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