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Data Image IDDateAreaDEM ESP_011562_17552009-01-131DEM_24102 ESP_025368_17552011-12-251DEM_24102 PSP_009505_17552008-08-062DEM_9505 ESP_023957_17552011-09-062DEM_9505.

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Presentation on theme: "Data Image IDDateAreaDEM ESP_011562_17552009-01-131DEM_24102 ESP_025368_17552011-12-251DEM_24102 PSP_009505_17552008-08-062DEM_9505 ESP_023957_17552011-09-062DEM_9505."— Presentation transcript:

1 Data Image IDDateAreaDEM ESP_011562_17552009-01-131DEM_24102 ESP_025368_17552011-12-251DEM_24102 PSP_009505_17552008-08-062DEM_9505 ESP_023957_17552011-09-062DEM_9505 PSP_003453_17502007-04-223DEM_18854 ESP_018854_17552010-08-043DEM_18854 PSP_001488_17502006-11-204DEM_24234 ESP_024234_17552011-09-274DEM_24234 PSP_009861_17552008-09-022DEM_9505 ESP_024023_17552011-09-112DEM_9505 List of images that were identified as potential source for surface change detection and processed according to the workflow presented above. “Area” refers to the location illustrated in the next slide, and DEM refer to the DEM ID supplied by JPL www.imaginlabs.com

2 1 3 4 2 Area of interest as indicated by JPL 3.5km

3 Area 2 Images analyzed: PSP_009505_1755 2008-08-06 ESP_023957_1755 2011-09-06 3 years, 1 month 1 km www.imaginlabs.com

4 -2.3 m 0.5-1.4 m 1.7 Sand ripples displacement map in the East/West direction (Eastward positive) Sand ripples displacement map in the North/South direction (Northward positive) All dunes in the area 2 footprint are subject to ripples migration. The direction of the ripple migration is mostly North/South, although strong uncorrected satellite jitter in the East/west direction prevent from measuring the eastward component of the ripples migration. On average ripples migration of 1.5-2 meters in the 3 years, 1 month time frame is observed. www.imaginlabs.com

5 Area 3 Images analyzed: PSP_003453_1750 2007-04-22 ESP_018854_1755 2010-08-04 3 years, 3 months 1 km www.imaginlabs.com

6 -2.7 m 0.5-2.5 m 1.0 Sand ripples displacement map in the East/West direction (Eastward positive) Sand ripples displacement map in the North/South direction (Northward positive) All dunes are subject to ripples migration; migration amplitude of more than 2 meters in the 3 years, 3 months time frame is observed on several dunes. www.imaginlabs.com

7 Orientation of the ripples migration over the 3 years, 3 months period Orientation is in accordance with dune shape and evolves from a South direction to a South-East direction the further we go south on the dune field www.imaginlabs.com

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