Images

At the Kamokuna ocean entry, the lava delta is active and slowly growing. As of today, the delta is about 6.8 acres (2.8 hectares) in size. Many coast-parallel cracks are visible on the delta, including a large crack near the center that spans the entire width of the delta. A few small streams of lava entering the ocean can be seen near the front of the delta.

The June 26 breakout (lighter-colored flow in the center of the photo) is active on the coastal plain and at the flow front. There's been no significant advancement of the flow front since July 31. Today, active breakouts were located roughly 1.5 km (0.9 mile) from the emergency route.

While mapping the flow margins, HVO geologists found an opening into an old lava tube system that has been partly filled with episode 61g lava. Most of the cooled lava cascades were intact and sitting on top of rubble from the caved-in roof of the abandoned tube.

This map shows recent changes to Kīlauea's East Rift Zone lava flow field. The area of the active flow field as of July 10 is shown in pink, while widening and advancement of the active flow as of August 9 is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983-2016) are shown in gray. The yellow line is the trace of the active lava tube.

This time-lapse sequence shows the outgassing plume from the Halema‘uma‘u lava lake at the summit of Kīlauea. The images were captured by a camera on the flank of Mauna Loa on May 19, 2017. As the plume rose from the vent, it reached the atmospheric inversion layer, which effectively capped the height of the plume.

This perched lava channel, which was as much as 150 feet (45 meters) above the ground, carried lava downslope from the Pu‘u ‘Ō‘ō Fissure D vent during episode 58 of Kīlauea Volcano's ongoing East Rift Zone eruption. The channel was the main path for lava between July and November 2007. Episode 58 continued until early March 2011.

GeoGirls collect water samples and flow measurements to model the transport of volcanic sediments.

GeoGirls collect water quality data at Coldwater Lake and sieve landslide deposits to learn more about the impact of the 1980 eruption and the transport of volcanic sediment.

GeoGirls deploy seismometers at Mount St. Helens and learn how to interpret earthquake data.

A balloon and simple point-and-shoot camera is used to collect digital images that are stitched together to build a 3D elevation model of the landscape.

GeoGirls use ground-penetrating radar to locate rock and ash layers from past eruptions at Mount St. Helens (Mount Adams is pictured in the background).

Meet the GeoGirls, their high school mentors, teacher mentors and scientists at the GeoGirls media day on August 1, 2018.

The episode 61g lava delta at the Kamokuna ocean entry is unstable with many cracks parallel to the coast. Comparing time-lapse images from July 22 (left) and July 31 (right), the large crack in the center of the delta continues to widen.

On the coastal plain, the front of the June 26 breakout was stalled approximately 1.5 km (0.9 mile) from the emergency route road. The flow front had advanced approximately 300 m (0.2 mile) since HVO last mapped it on July 25. A couple of weak surface breakouts were observed near the flow front, with the closest about 50 m (yards) behind the stalled front.

This viscous, slow-moving ropy pāhoehoe flow was one of only two weak surface breakouts observed by HVO geologists.

This satellite image was captured on Sunday, July 30, by the NASA/USGS Landsat 8 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures and show active lava. White areas are clouds.

Mount St. Helens, Washington seen from the flank of Mount Adams to the east.

Mount Adams viewed from Glenwood, Washington.

At Mount St. Helens, the GeoGirls explore the Ape Cave lava tube and learn how to interpret the layers left in the rock wall. 

The summit lava lake level continued to drop through Saturday July 29 as the summit deflated. Rockfalls from the Overlook crater walls have been frequent over the past two days, due to the lowering lava level, and these collapses trigger spattering in the lake.

Summit deflation over the past day occurred as part of a deflation-inflation (DI) event, and, as usual with deflation, the lava lake level dropped. Over the past two days the lake level has dropped about 20 m (66 ft).