Images

Another view of the Overlook crater, comparing the visual photograph with a thermal image taken from a similar position. The thermal camera can "see" through thick fume, providing an unobstructed view of the crater and lava lake.

New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.

A lava flow fed from a spatter cone on the south part of Pu‘u ‘Ō‘ō's crater floor (the South spatter cone) continues to advance toward the east-southeast, and is about 700 m from its vent. The flow is the silvery lava that crosses the center of the photo.

The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.

The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.

The flow from the South spatter cone has buried part of the southern flank of Pu‘u ‘Ō‘ō cone, leaving little of the original tephra that composes the cone visible. Compare this photo to the one taken just a few months ago, on March 7.

New flows on the floor of Pu‘u ‘Ō‘ō crater over the past few weeks threatened cameras positioned on the crater's north rim. Two cameras—a thermal camera observing the crater and a regular webcam observing the active Kahauale‘a 2 flow in the distance—were moved to a safer location partway up the steep northwestern flank of Pu‘u ‘Ō‘ō cone.

The distal tip of the Kahauale‘a 2 flow, shown here, was 8.6 km (5.3 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō when mapped today. The flows advanced about 300 m (0.2 miles) since April 28.

Bathymetric the islands and seamounts that make up the Mariana volcanic island arc (left) and the area of Ahyi seamount in the northern part of the arc (right). Susan Merle of NOAA's Earth-Ocean Interaction Program created these maps.

Lava flows from two different vents in Pu‘u ‘Ō‘ō crater have spilled out of the crater and down the flanks of the cone over the past week. This photo shows the new flow, easy to identify with its light gray color, originating from the south spatter cone in Pu‘u ‘Ō‘ō crater (the spatter cone is visible as a bump on the crater floor).

The lava flow from the north spatter cone ran over old cinder deposits from the early fountaining phases of Pu‘u ‘Ō‘ō in the 1980s. Cinders sticking to the front of the pāhoehoe lava were lifted up as the front of the pāhoehoe toes inflated.

The northeast spatter cone in Pu‘u ‘Ō‘ō crater remained active, but the lava pond (featured in many recent photographs posted here) has crusted over, leaving only a small circular opening venting gas.

A closer look at the small opening at the top of the northeast spatter cone in Pu‘u ‘Ō‘ō crater. Although the lava pond is crusted over, fluid lava is likely present just a short distance below the opening. Delicate lava stalactites have formed just inside the rim.

Despite the recent changes in Pu‘u ‘Ō‘ō crater over the past week, the Kahauale‘a 2 lava flow remains active northeast of Pu‘u ‘Ō‘ō, and continues to advance slowly through remote forest. The active flow front today was 8.3 km (5.2 miles) northeast of the vent on Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō is visible near the top of the photograph.

The lava flow from the north spatter cone, in Pu‘u ‘Ō‘ō, began on Tuesday night and came close to the north rim of Pu‘u ‘Ō‘ō crater, where our webcams are situated. Because of this proximity, several of the webcams and other pieces of equipment were moved to higher ground on Pu‘u ‘Ō‘ō.

Map showing the Kahauale‘a 2 flow in relation to the eastern part of the Island of Hawai‘i as of April 28, 2014. The most distant active front of the Kahauale‘a 2 flow was just over 8.3 km (5.2 miles) straight-line distance northeast of Pu‘u ‘Ō‘ō. Two other flows were also active on the flanks of Pu‘u ‘Ō‘ō, each erupting from a different vent.

The north spatter cone in Pu‘u ‘Ō‘ō crater fed a new flow, starting Tuesday evening, that covered much of the northern part of the crater floor and spilled over the crater rim towards the north. The right side of the north spatter cone has been present for many months, but the left side, which was spattering this morning, is new as of this week.

Columnar jointing in the basalt cliffs at Latourell Falls, Oregon. The basalt columns formed when thick lava flows cooled after emplacement.

Flood basalt lava flow in stacked layers viewed eastward across the Columbia River from Rowena Crest Viewpoint, Oregon. Basalt in the lava flows has formed columnar jointing.

The Kahauale‘a 2 lava flow, as of April 18, 2014, is shown in pink, with a yellow line indicating the active lava tube. The most distant active front of the flow retreated over the past week, probably in response to a DI event. The area covered by older lava flows erupted from Kīlauea in 1983-2013 is shown in gray.

Another view of the Kahauale‘a 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.