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Small-scale map of flow field

February 16, 2017
The area of the active flow field as of January 12 is shown in pink, while widening and advancement of the active flow as of Feb
Sources/Usage: Public Domain. View Media Details
This small-scale map shows Kīlauea's active East Rift Zone lava flow field in relation to the southeastern part of the Island of Hawai‘i. The area of the active flow field as of January 12 is shown in pink, while widening and advancement of the active flow as of February 16 is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983–2016) are shown in gray. The blue lines over the Pu‘u ‘Ō‘ō flow field are steepest-descent paths calculated from a 2013 digital elevation model (DEM), while the blue lines on the rest of the map are steepest-descent paths calculated from a 1983 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 blue lines on this map can be used to infer only approximate flow paths. The base map is a partly transparent 1:24,000-scale USGS digital topographic map draped over the 1983 10-m digital elevation model (DEM).

 

Citation Information

Title Small-scale map of flow field
Record Source USGS Publications Warehouse