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Composite satellite image, including lava flow thermal infrared, of...

Detailed Description

Composite satellite image of Veniaminof Volcano (Alaska) collected by Landsat-8 with short-wave infrared data to show thermal emissions from the active lava flow overlain onto a visible wavelength image. An eruption began in June, 2013 with lava effusion and ash emission, followed by a lull in activity. The active lava flow is shown in shades of yellow and orange, and extends southward from the vent. Thin deposits of volcanic ash are seen on the snow and ice, as radial spokes that form when ash is emitted under changing wind direction.