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Slow Advancement of Lava Flow Front Continues

October 4, 2014

Breakout of pāhoehoe lava on the upslope part of the June 27th flow. (USGS)

The following photos and maps were released by the Hawaiian Volcano Observatory (USGS) (Dated October 3, 2014) . Note: these photos were not taken in areas currently accessible to the public. (You can visit the official website of Hawai’i Volcanoes National Park for current information on the areas of Kilauea that are open to public). Click here to see photos from previous post.

Active breakouts continue at the flow front, with about 270 m (roughly 300 yards) of advancement since Wednesday, October 1. The flow front this morning was 2 km (1.2 miles) upslope from Apaʻa St. and 3 km (1.9 miles) from Pāhoa Village Road. (USGS)

Breakouts continue upslope of the flow front, around the area where lava first entered ground cracks (about halfway between the Puʻu ʻŌʻō vent and the flow front). Today, several new, but small, breakouts were active in this area. (USGS)

The leading edge of the flow today was moving through a tall stand of trees. (USGS)

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. Surface activity comprised of Pāhoehoe toes and lobes were scattered across the leading edge of the flow. Lava continued to advance downslope and extended the front by about 270 m (295 yards) since Wednesday, October 1, 2014. (USGS)

This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The black dots mark the flow front on specific dates. Small breakouts were scattered across the leading edge of the flow today. Lava continues to advance downslope and extended the front by about 270 m (295 yards) since our October 1, 2014 over flight. Several breakouts were also active along the margin of the flow upslope of the leading edge and midway along the length of the flow near where lava first entered the crack system. The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM; for calculation details, see http://pubs.usgs.gov/of/2007/1264/). Down-slope 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 indicate approximate flow path directions. (USGS)

This small-scale map shows the June 27th flow in Kīlauea’s East Rift Zone in relation to lower Puna. The area of the flow on October 01 at 09:40 AM is shown in pink and the flow as mapped on October 03 at 09:20 AM is shown in red. Small breakouts, comprised of Pāhoehoe toes and lobes, were scattered across the leading edge of the flow. The flow front has advanced 270 m (295 yards) since our Oct 1, 2014 over flight. The northern lobe is inactive as of today. Several breakouts were also active along the margin of the flow upslope of the leading edge and midway along the length of the flow near where lava first entered the crack system. The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM). For an explanation of down-slope path calculations, see: http://pubs.usgs.gov/of/2007/1264/. Down-slope 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 indicate approximate flow path directions. All older Puʻu ʻŌʻō lava flows (1983–2014) are shown in gray; the yellow line marks the lava tube. (USGS)

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