Images

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.

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

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.

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 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.

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.

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.

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.

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.

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.

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 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.

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 19 at 8:30 AM is shown in pink, while advancement of the flow as mapped on December 22 at 3:00 PM is shown in red.

This 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 19 at 8:30 AM is shown in pink, while advancement of the flow as mapped on December 22 at 3:00 PM is shown in red.

This compares a normal photograph of the active flow front with a thermal image. The white box shows the rough extent of the thermal image. In the thermal image, white and yellow pixels show areas of active breakouts. The thermal image shows that small breakouts are present near the leading tip of the flow, and that many other breakouts are active upslope.

Kīlauea's East Rift Zone lava flow remains active upslope from the Pahoa Marketplace area, visible at upper left, though activity has waned over the past week. The flow was very close to a firebreak road cut several months ago. The Pahoa Transfer Station is at upper right. The view is to the southeast.