Images

An HVO geologist conducts a very-low frequency (VLF) survey of the lava tube to measure the rate of lava flowing through the tube. The measurement consists of two steps. First, a transect of VLF measurements across the roof of the tube is used to measure the cross-sectional area of lava flowing through the tube.

Preview image for video: shows the view through a skylight on the lava tube, which provided a clear view of the flowing lava stream.

Titanium tubed used to collect gas from a fumarole near Lassen Peak, California.

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. The latitude and longitude of the flow front on September 12 was 19.46388/-154.98343 (Decimal degrees; WGS84).

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone on September 12, 2014. The area of the flow on September 10, 2014, at 2:45 PM is shown in pink, while widening and advancement of the flow as mapped on September 12 at 12:30 PM is shown in red.

Preview image for video: provides an aerial view of the flow front and its position relative to Kaohe Homesteads.

As of Friday afternoon, September 12, 2014, the most distal front of the June 27th lava flow had reached a straight-line distance of 14.9 km (9.3 miles) from the source vent on the northeast flank of the Pu‘u ‘Ō‘ō cone.

The photo on the left is compared here to a thermal image on the right, which provides a clear view of the flow front of the June 27th flow through the thick smoke. The vent for the June 27th flow is on Pu‘u ‘Ō‘ō, which can be seen at the top of the normal photograph.

This shaded-relief map, with digital surface data provided by the Carnegie Airborne Observatory, shows some of the cracks, faults, and grabens (down-dropped blocks between adjacent faults; http://earthquake.usgs.gov/learn/glossary/?term=graben) that are present in Kīlauea's East Rift Zone, and whic

View looking northeast along the terminus of the July 27th flow. Kaohe Homesteads is to the right, and Pāhoa town is in the middle center. The active flow is in the middle left.

View from above the middle part of the June 27th flow looking south at a small breakout that is burning forest along the previously existing flow margin. Heiheiahulu cone is in the upper left.

Several HVO scientists participated in a series of public meetings in Pāhoa and nearby communities when the June 27th lava flow, named for the date in 2014 that the flow started, threatened to inundate part of the Puna District, including houses, businesses, roads, and utilities.

This shaded-relief map, with digital surface data provided by the Carnegie Airborne Observatory, shows some of the cracks, faults, and grabens (down-dropped blocks between adjacent faults; http://earthquake.usgs.gov/learn/glossary/?term=graben) that are present in Kīlauea's East Rift Zone, and whic

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone on September 10, 2014. The area of the flow on September 8, 2014, at 12:45 PM is shown in pink, while widening and advancement of the flow as mapped on September 10 at 2:45 PM is shown in red.

Smoke plumes indicate the location of the June 27th lava flow, which was 0.6 km (0.4 mi) from the edge of Kaohe Homesteads, visible in foreground, on September 10. The flow was advancing toward the northeast.

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. The latitude and longitude of the flow front on September 8 was 19.460895/-154.986613 (Decimal degrees; WGS84).

View from above the end of the June 27th lava flow, looking along its northeast trend through the Wao Kele o Puna Forest Reserve. On the afternoon of September 10, 2014, the flow front was 0.6 km (0.4 mi) from the boundary between the Forest Reserve and Kaohe Homesteads, visible at far right.

Smoke plumes indicate the location of the June 27th lava flow, which was 0.6 km (0.4 mi) from the edge of Kaohe Homesteads, visible in foreground, on September 10. The flow was advancing toward the northeast.

Preview image for video: provides an overview of activity near the front of the June 27th lava flow, and shows the position of the flow front relative to Kaohe Homesteads and Pahoa.

The June 27th lava flow remained active Wednesday afternoon, September 10, 2014, with the most distal flow front 14.5 km (9.0 mi; straight-line distance) from the vent on the northeast flank of the Pu‘u ‘Ō‘ō cone, which is visible in the far background.

View from above the end of the June 27th lava flow, looking along its northeast trend through the Wao Kele o Puna Forest Reserve. On the afternoon of September 10, 2014, the flow front was 0.6 km (0.4 mi) from the boundary between the Forest Reserve and Kaohe Homesteads, visible at far right.