Haïti
Matthew hurricane
4 October 2016

Sentinel-2 Images enable to measure the loss of vegetation just after Hurricane Matthew that occurred on 4 October 2016.

Sentinel-2 (optical) - Natural colours

· Sentinel-2 MSI (2 tiles) acquired on 24 December 2015 15:40:39 GMT
· Sentinel-2 MSI (2 tiles) acquired on 9 October 2016 15:36:12 GMT 2D_stack

S2 24.12.2015 (before) - Natural colour composition (4-3-2) 2D_view

S2 09.10.2016 (after) - Natural colour composition (4-3-2) 2D_view

Near infrared

S2 24.12.2015 (before) - Near-infrared colour composition (8-4-3) 2D_view

S2 09.10.2016 (after) - Near-infrared colour composition (8-4-3) 2D_view

NDVI (vegetation at 10m)

S2 24.12.2015 (before) - Normalized Difference Vegetation Index (8 vs.4, [0;1] - 10m) 2D_view

S2 09.10.2016 (after) - Normalized Difference Vegetation Index (8 vs.4, [0;1] - 10m) 2D_view

Sentinel-3 Images enable to mesaure the dispersion of sediments 5 to 8 days after the heavy rain that occurred during the second half of October

Sentinel-3 OLCI watching suspended sediments

· Sentinel-3A OLCI FR acquired on 24 October 2016 at 14:58:37 GMT 2D_stack 3D_stack
· Sentinel-3A OLCI FR acquired on 4 November 2016 at 15:13:35 GMT 2D_animation
· Sentinel-3A OLCI FR acquired on 9 November 2016 at 14:43:39 GMT
· Sentinel-3A OLCI FR acquired on 12 November 2016 at 15:06:06 GMT
· Sentinel-3A OLCI FR acquired on 2 December 2016 at 14:47:24 GMT
· Sentinel-3A OLCI FR acquired on 6 December 2016 at 14:43:39 GMT

Correlation between the amount of released sediments with the precipitations (data GPM NASA).

S3A OLCI (24.10.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

S3A OLCI (04.11.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

S3A OLCI (09.11.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

S3A OLCI (12.11.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

S3A OLCI (02.12.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

S3A OLCI (06.12.2016) after Matthew Hurricane landfall - 6-5-3 colour composite 2D_view 3D_view

All these « hyperlooks » are interactively processed with VtWeb

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