1972-2002 Landsat testimony of the Colorado River Delta.

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Lower Colorado River Delta retrospective from Landsat, a family of USA Earth observing satellites with a digital archive of acquisitions since 1972 over a major portion of the earth. With 63 chronologically ordered mosaics integrated from 157 image previews of the archive, this animation file was prepared for the USA-Mexico border region, that extend over the US states of California and Arizona, and Sonora and Baja California for Mexico. The river is the border between this neighboring states. On the bottom part the animation, there is time reference (1972-2002) with a graph of the Colorado River flow record crossing from US to Mexico. In 1984, there is a maximum flow record of over 900 cubic meters per second. On this visual tool, you can clearly see the correlation between the flow and the inundated areas. The red images correspond to images captured by Multi Spectral Scanner sensor (MSS) on board Landsat 1,2 and 3 from 1972 to 1983 and the green ones to the Thematic Mapper (TM) sensor on board Landsat 4 and 5 from 1982 to 2002. |