Figure 2.

IKONOS satellite images of study areas in (a) India and (b) Bangladesh acquired in April 2000 and November 2000, respectively. The images were processed to emphasize in purple the water contained in streams, ponds, and irrigated rice paddies. Mottled areas indicate trees, which typically correspond to where dwellings are located. Also shown are symbols indicating the positions of needle-sampler profiles obtained in the two study areas. Unlike subsequent figures, the scale is the same for both images.