New Maps Released of Puna Lava Flow – Advances and Widens

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.

Map of distal flow field. (Click to enlarge)

Map of distal flow field. (Click to enlarge)

The area of the flow on February 27 is shown in pink, while widening and advancement of the flow as of March 10 is shown in red.

The blue lines show 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 blue lines on this map can be used to infer only approximate flow paths. (see large map)

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on March 10 at about 10:35 AM.

Map of distal flow field with thermal overlay.  (Click to enlarge)

Map of distal flow field with thermal overlay. (Click to enlarge)

The base image is a satellite image acquired in March 2014 (provided by Digital Globe). The perimeter of the flow at the time the imagery was acquired is outlined in yellow. Temperature in the thermal image is displayed as gray-scale values, with the brightest pixels indicating the hottest areas (white areas are active breakouts).

The blue lines show 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 blue lines on this map can be used to infer only approximate flow paths. (see large map)

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow west of Kaohe Homesteads on March 10 at about 10:30 AM.

Map of flow field west of Kaohe Homesteads with thermal overlay.  (Click to enlarge)

Map of flow field west of Kaohe Homesteads with thermal overlay. (Click to enlarge)

The perimeter of the flow at the time the imagery was acquired is outlined in yellow. Temperature in the thermal image is displayed as gray-scale values, with the brightest pixels indicating the hottest areas (white areas are active breakouts). (see large map)

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Puʻu ʻŌʻō on March 10 at about 10:25 AM.

Map of proximal flow field with thermal overlays.  (Click to enlarge)

Map of proximal flow field with thermal overlays. (Click to enlarge)

The perimeter of the flow at the time the imagery was acquired is outlined in yellow. Temperature in the thermal image is displayed as gray-scale values, with the brightest pixels indicating the hottest areas (white areas are active breakouts). (see large map)

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna.

Small-scale map of flow field.  (Click to enlarge)

Small-scale map of flow field. (Click to enlarge)

The area of the flow on February 27 is shown in pink, while widening and advancement of the flow as of March 10 is shown in red.

The blue lines show 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 blue lines on this map can be used to infer only approximate flow paths. All older Puʻu ʻŌʻō lava flows (1983–2014) are shown in gray; the yellow line marks the active lava tube (see large map)

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