Image of area around flow front

Satellite image of area around flow front...

Detailed Description

This map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of the June 27th lava flow. The area of the flow on October 22, 2014, at 1:50 PM is shown in pink, while widening and advancement of the flow as mapped on October 24 at 12:10 PM is shown in red. The front of the June 27th flow continues to advance as a narrow finger, and was 150 m (165 yd) upslope from AP‘A‘ā Street at the time of mapping. The flow front was about 50 m (55 yd) wide and moving at a rate of about 10 m (33 ft) per hour through the morning. A slightly broader and slower-moving lobe splits off from the southeast edge of the finger about 300 m (330 yd) back from the front, and it was about 250 m (275 yd) from AP‘A‘ā Street. The dotted blue lines show the pertinent steepest-descent paths, calculated from a 1983 digital elevation model (DEM; for calculation details, see http://pubs.usgs.gov/of/2007/1264/). 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 dotted blue line can be used to infer only an approximate flow path.

Details

Image Dimensions: 3300 x 2550

Date Taken: