Infrared aerial photography are pictures taken using devices that capture the infrared radiation given off by the earth's surface or other objects. These pictures are usually large land areas and can help show the changes in the land over time. Above is an infrared aerial photo of a wetland in Sacramento on the USGS website. Each color in the photograph represents the land.For example red shades represent more live vegetation and blue shades are dead vegetation or high in moisture land. This is shown here in the wetland photo.
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