Posted on April 18, 2014 by Damon
The Kahaualeʻa 2 lava flow remains active northeast of Puʻu ʻŌʻō, and is still moving slowly through thick forest. The active flows retreated a short amount over the past week due to a deflation-inflation cycle at the summit, with the farthest active flows today at about 7.5 km (4.7 miles) northeast of the vent on Puʻu ʻŌʻō. These farthest active flows are evident by the smoke in the left hand portion of the photograph. The stalled flow front, in the foreground, is at 8.3 km (5.2 miles) from the vent.
Another view of the Kahaualeʻa 2 flow front, with a normal photograph at the left and a corresponding thermal image on the right. The thermal image shows the distribution of active pāhoehoe lobes clearly, with active flows shown by the white colors. This image shows how the active flows have retreated a short distance back from the stalled flow front over the past week.
In Puʻu ʻŌʻō crater, a small lava pond (about 5 meters, or yards, wide) continued to be active and was still “gas pistoning” today. Gas pistoning is a cyclic rise and fall of the lava pond surface due to gas buildup and release. During the fall phase, intense spattering disrupts the lava pond surface and releases the accumulated gas. Each cycle lasted about five to ten minutes.
A closer view of the lava lake in the Overlook crater, within Halemaʻumaʻu Crater at Kīlauea’s summit. The lake is now about 160 m by 200 m (520 x 700 feet) in size. The lava rises to the surface in the northern part of the lake (right side in this photograph) and flows towards the south (left). Cracks around the Overlook crater rim (right side of photo) suggest that future collapses of the rim will occur at some point.
Filed under: Announcements, Big Island, Community, Environment, Hawaii, Rumors, Security, Unexplained Phenomenon Tagged: | Lava Flow in Hawaii, Lava Threatens Houses