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Nadir

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For decades, astronauts on space missions have documented land use changes
around the world. In this pair of images, astronauts track the development of
shrimp farming along the Honduran coastline of the Gulf of Fonseca between 1989
and 2001. Mariculture, primarily shrimp farming, has become a leading
agricultural effort in Honduras. The regional transformation of large tracts of
coastal swamps into shrimp farms blossomed throughout the 1990s. The top image
was taken with color infrared film in 1989. Dense vegetation, like the coastal
mangrove swamps and the forested slopes of Volcán Cosigüina show up as dark red.
The bottom image, taken with color visible film by the crew of the most recent
Space Shuttle mission in December 2001 shows that hundreds of square kilometers
of coastal swamp, primarily in Honduras, have been converted to shrimp ponds.
These appear as the light-colored, rectilinear land use pattern. The Honduras
shrimp farms were hit hard by flooding after Hurricane Mitch in 1998, and a
devastating virus in 1999-2000. It is not known how many of the ponds in this
view are still functional. A vigorous debate continues about the sustainability
of the shrimp farms and the impacts to the environment and coastal ecosystem
due to mangrove clearing and mariculture waste production.

Apart from the shrimp farms, the other prominent feature on these images is
the impressive volcano Cosigüina, which erupted explosively in 1859 (the
largest recorded eruption in the Western Hemisphere).
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