Images

Fractures define the perimeter of a new, smaller crater within Pu‘u ‘Ō‘ō. Light-colored areas are parts of the original cinder-and-spatter cone that have not been buried by lava flows. USGS photo.

Another view of the 'island', with a small steam plume indicating where incandescent lava is entering the ocean.

This compares a normal photograph of the active flow front with a thermal image. The photograph has been cropped and rotated to approximate the perspective of the thermal image. The thermal image shows that small breakouts were present immediately behind the leading tip of the flow and farther upslope, indicated by the white and yellowish pixels.

Lassen Volcanic Center, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Glacier Peak, Washington simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Mount Shasta, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Lidar images of Shastina cone, west flank of Mount Shasta, California. Details of lava flows and other surficial features are best seen in the image to the right with vegetation removed.

Flyer for the Mount St. Helens Teacher Workshop. Held June 25-27, 2014, it was a workshop for middle school teachers.

LaharZ model (left) of the possible lahar hazards from the Carbon and Puyallup River drainages from Mount Rainier. The town of Orting, Washington (photograph) sits in the lahar hazard zone.

Map showing the lava flows that have erupted on Mauna Loa Volcano from 1843-1984.

Pollution performance curves for different ceramic and non-ceramic insulators. The pink shaded area represents an Ave. ESDD/NSDD 0.02/10.7 - 0.04/19.1 mg/cm2; yellow represents an Ave. ESDD/NSDD 0.1/60 - 0.3/106 mg/cm2; purple an Ave. ESDD/NSDD 0.3/113 - 0.6/218 mg/cm2

This large-scale map shows the distal part of Kīlauea's active East Rift Zone lava flow in relation to nearby Puna communities. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

The leading part of the flow consisted of several small, active lobes this afternoon. The front of the lobe that crossed the firebreak was stalled, though breakouts were active about 50 m (55 yd) upslope. Another lobe (area of most visible smoke in center) was about 300 m (330 yd) upslope of the tip and 150 m (165 yd) upslope of the firebreak.

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea's active East Rift Zone lava flow. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

Close view of incandescence in spatter cone within a pit at the northeast edge of Pu‘u ‘Ō‘ō's crater (the smaller pit visible to the right side in the adjacent photograph). Note small flows that cover the floor of this small crater.

This small-scale map shows Kīlauea's active East Rift Zone lava flow in relation to lower Puna. The area of the flow on December 22 at 3:00 PM is shown in pink, while widening and advancement of the flow as mapped on December 30 at 2:30 PM is shown in red.

A clear view today of Pu‘u ‘Ō‘ō's summit revealed no significant change during the past week. The cross-sectional area of the active lava stream in the tube on the flank of Pu‘u ‘Ō‘ō was the same as measured on December 22, suggesting no change in lava discharge from the vent.

Kīlauea's East Rift Zone lava flow remains active upslope from the Pahoa Marketplace area, visible at lower right. The leading edge stalled on December 22, but breakouts just upslope widened the flow field and then overtook the flow front during the past few days. The new leading edge advanced the flow front about 150 m (165 yd) since December 27.

This satellite image was captured on Thursday, December 25, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 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.

This satellite image was captured on Thursday, December 25, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 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.

This small-scale map shows Kīlauea's active East Rift Zone lava flow in relation to lower Puna. The area of the flow on December 19 at 8:30 AM is shown in pink, while widening and advancement of the flow as mapped on December 22 at 3:00 PM is shown in red.