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Satellite image of area around front of Kīlauea’s East Rift Zone lava flow

January 9, 2015
Satellite image of area around front of Kīlauea's East Rift Zone la...
This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea's active East Rift Zone lava flow. The area of the flow in the afternoon on January 6 is shown in pink, while widening and advancement of the flow as determined from satellite imagery acquired in the morning on January 9 is shown in red.The blue lines show steepest-descent paths calculated from a 1983 digital elevation model (DEM; for calculation details, see Steepest-descent path analysis is based on the assumption that the DEM perfectly represents the earth's surface. DEMs, however, are not perfect, so the blue lines on this map can be used to infer only approximate flow paths.