HAWAII VOLCANOES NATIONAL PARK, Hawaii – A couple of fresh volcano videos from the USGS Hawaiian Volcano Observatory.

Scientists recently shared footage of the lava pond in Puʻu ʻŌʻō crater on March 7, which was undergoing “gas pistoning” at the time. Gas pistoning is the cyclic rise and fall of the lava surface, driven by the buildup and release of gas in the lava pond. This sequence shows the drop of the lava level, which corresponds with vigorous spattering and agitation of the pond surface.

Mar 7, 2014: The lava lake in the Overlook crater, within Halemaʻumaʻu Crater, at Kīlauea’s summit remains active. Today, winds carried the plume towards the north, providing a clear view of the persistent spattering area in the southeast portion of the lake. (USGS HVO photo)

And of course, Kīlauea’s summit lava lake in Halemaʻumaʻu Crater is still active. On the day the video above was taken, winds carried the gas plume towards the north, providing a clear view of the persistent spattering area in the southeast portion of the lake.

Meanwhile, the Kahaualeʻa 2 lava flow remains active. The flow front is moving through thick forest about 4.9 miles northeast of Puʻu ʻŌʻō.

Mar 7, 2014: The Kahaualeʻa 2 flow remains active, and the active flow front is moving through thick forest northeast of Puʻu ʻŌʻō. The flow front today was 7.9 km (4.9 miles) northeast of the vent on Puʻu ʻŌʻō. Puʻu ʻŌʻō is visible in the upper left of the photograph, and is partly obscured by fume. (USGS HVO photo)

From the recent HVO Volcano Watch:

Kīlauea activity update

A lava lake within Halemaʻumaʻu produced nighttime glow that was visible via HVO’s Webcam during the past week. The lava level fluctuated with a deflation-inflation cycle and varied between 39 and 50 m (130 and 160 ft) below the rim of the Overlook crater.

On Kīlauea’s East Rift Zone, the Kahaualeʻa 2 flow continued to be active northeast of Puʻu ʻŌʻō. After the flow front stalled in late January at a distance of 7.8 km (4.8 mi) northeast of Puʻu ʻŌʻō, surface flows have been active behind the stalled flow front. This week, the flows reached the stalled flow front, and are active about 7.8 km (4.8 mi) northeast of Puʻu ʻŌʻō. Webcam images indicate that small forest fires are continuing.USGS Hawaiian Volcano Observatory on March 6, 2014