Images

Participants at the 6th International Workshop on Ash and Aviation (Citeko, Bogor, Indonesia) discuss volcanic hazards and hazard mitigation strategies while visiting the Gede Volcano.

Kīlauea Volcano's summit vent "then and now." In April 2008, a month after it opened, the vent within Halema‘uma‘u Crater was about 115 feet in diameter (left). As of March 2013, it is more than 500 feet across (right). USGS photos.

The ocean entry near Kupapa`u Point remains active, with no major changes in appearance over the past few weeks. In this view, the two main entry points are visible, with a smaller third entry point (out of view) just beyond these.

The ocean entry near Kupapa`u Point remains active, with no major changes in appearance over the past few weeks. In this view, the two main entry points are visible, with a smaller third entry point (out of view) just beyond these.

Breakouts have been active recently in several locations on the coastal plain. The sluggish flows in this photo were about 1.6 km (1 mile) out from the base of the pali, with a more active patch of breakouts mauka of this location. In addition, several areas of breakouts were active very close to the shoreline and ocean entry.

Structure built by Anasazi and Singuan people north of Sunset Crater, Arizona, in Wupatki National Monument. Agriculture began here because cinder from nearby volcanoes trapped water in soil.

San Francisco Peaks, north of Flagstaff, Arizona, viewed from the northeast. This mountain cluster is the tallest of the San Francisco Volcanic field.

To monitor volcanoes, scientists rely on remote monitoring equipment that can operate 24-hours a day and 365-days a year to deliver real-time data. When scientists design and install monitoring stations, they must consider the remoteness of sites, terrain, and winter conditions. Here, rime ice coats a telemetry system that transmits data near Mount St.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

The "spillway"—Pu‘u ‘Ō‘ō's eastern flank—has been buried by flows fed mostly from a spatter cone on the northeastern side of the crater floor. Most of the dark-colored lava in the foreground is new lava that has resurfaced the spillway. The fume to the left is the trace of the Peace Day tube, newly covered by crater overflows, currently carrying lava to the coast.

This is a view of the front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō, where the flow originates.

This is another of the spatter cones on the floor of Pu‘u ‘Ō‘ō. This one, on the northeast side of the crater floor, has long had an open top with a view of a small lava lake.

This is a closer look at the spatter cone on the northwest side of Pu‘u ‘Ō‘ō's crater floor. The photo was taken from near the site of the webcam on the north rim of Pu‘u ‘Ō‘ō.

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

Some of the recent overflows at Pu‘u ‘Ō‘ō traveled to the southeast. This photo shows those overflows, which comprise several dark-colored channelized flows.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.