Images

Total collapse of a reinforced building with masonry infill walls. Rubble has been disturbed by heavy equipment.

Emergency shelter camp for thirty families erected at the site of a former village.

People next to the ruins.

Damage to a village house. Gaojiabian, Lushan.

People next to the ruins.

Timberwork house with wood embedded in cement wall has little damage during earthquake.

People next to the ruins.

Damage to a village house.

Timberwork house with "soft connection" has little damage during earthquake.

To better understand the physics of debris flows and to make more accurate hazards forecasts in the natural environment, scientists perform controlled experiments at the large-scale USGS debris flow flume facility.

A close-up of the Kahauale‘a II flow burning vegetation at the forest line, just north of Pu‘u ‘Ō‘ō. The flow consists of numerous slow-moving pāhoehoe lobes.

This photo looks south towards Pu‘u ‘Ō‘ō, where a vent is supplying lava to the Kahauale‘a II flow, north of the cone. This slow-moving flow has reached the forest line, producing small scattered brush fires.

The summit eruption in Halema‘uma‘u crater remains active. The lava lake is within the Overlook crater (the source of the gas plume), which is in the southeast portion of Halema‘uma‘u Crater.

This photo looks south towards Pu‘u ‘Ō‘ō, where a vent is supplying lava to the Kahauale‘a II flow, north of the cone. This slow-moving flow has reached the forest line, producing small scattered brush fires.

Two ocean entry points remain active near Kupapa‘u Point, near the boundary of Hawai‘i Volcanoes National Park. The eastern entry has produced a larger plume than that at the western entry, which tends to be weak and wispy.

Pagan Volcano is the largest and one of the most active volcanoes in the Northern Mariana Islands. Prior to 2013, the volcano was not monitored with any ground-based instruments, so activity was observed only by satellite or by the few island inhabitants. Although geographically remote, eruptions from Pagan can threaten international air traffic.

Camera captures SO2 released from Kīlauea's summit vent. HVO scientist tests the network link between the instrument and the Hawaiian Volcano Observatory.

Pu‘u ‘Ō‘ō was still close to its maximum height of 255 m (835 ft) in 1992 (top), although its western flank had been partly buried by a lava shield. Since then, the cone has lost a third of its former height due to collapses, and lava has continued to bury its flanks (bottom). USGS photos.

Why did the lava tube cross the road? This image shows the Peace Day lava tube coming down the pali in Royal Gardens subdivision. The lava tube parallels Ali`i avenue, shown by the straight line of warm temperatures that represent asphalt heated in the sun.

The spatter cone near the north rim of Pu‘u ‘Ō‘ō crater continues to produce pulsating gas jetting sounds. Compare this photo to one taken of the same cone on May 2 to see how much taller the cone has grown.

The small lava lake on the northeast rim of Pu‘u ‘Ō‘ō crater has been built into a small cone, with only a few small openings at the top. One of these small openings had sloshing lava near the surface.