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Images of the San Francisco Bay region on March 3rd 2000. Upper Left image: The color infrared composite uses bands in the visible and reflected infrared. Vegetation is red, urban areas are gray; sediment in the bays shows up as lighter shades of blue. Thanks to the 15 meter (50-foot) spatial resolution, shadows of the towers along the Bay Bridge can be seen. Upper right image: A composite of bands in the short wave infrared displays differences in soils and rocks in the mountainous areas. Even though these regions appear entirely vegetated in the visible, enough surface shows through openings in the vegetation to allow the ground to be imaged. Lower left image: This composite of multispectral thermal bands shows differences in urban materials in varying colors. Separation of materials is due to differences in thermal emission properties, analogous to colors in the visible. Lower right image: This is a color coded temperature image of water temperature, derived from the thermal bands. Warm waters are in white and yellow, colder waters are blue. Suisun Bay in the upper right is fed directly from the cold Sacramento River. As the water flows through San Pablo and San Francisco Bays on the way to the Pacific, the waters warm up. Photo Credit: NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [0003-0701-0819-5538] by 0003
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Keywords
bay area, bay bridge, ca, calif, california, geography, jpl, nasa, sacramento river, san fran, san francisco, san francisco bay, san francisco bay area, san pablo bay, sf, sf bay area, suisun bay
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