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Volcano Hazard Program images.

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Crystals tell us a lot about Kīlauea's ongoing eruption...
Crystals tell us a lot about Kīlauea's ongoing eruption
Crystals tell us a lot about Kīlauea's ongoing eruption
Crystals tell us a lot about Kīlauea's ongoing eruption

Pele's hair covers much of the ground in the area immediately downwind of the vent at Halema‘uma‘u Crater. Accumulations about a meter (yard) wide are found on the windward sides of the curbs in the Halema‘uma‘u parking lot, which is closed to the public because of the ongoing volcanic hazard (May 3, 2012).

Pele's hair covers much of the ground in the area immediately downwind of the vent at Halema‘uma‘u Crater. Accumulations about a meter (yard) wide are found on the windward sides of the curbs in the Halema‘uma‘u parking lot, which is closed to the public because of the ongoing volcanic hazard (May 3, 2012).

Scientists performing monitoring duties in the Alaska Volcano Obser...
Scientists performing monitoring duties in the AVO operations room
Scientists performing monitoring duties in the AVO operations room
Scientists performing monitoring duties in the AVO operations room

Scientists performing monitoring duties in the Alaska Volcano Observatory operations room.

Scientists performing monitoring duties in the Alaska Volcano Observatory operations room.

Super models help with volcano monitoring...
Super models help with volcano monitoring
Super models help with volcano monitoring
Super models help with volcano monitoring

A model of the magma reservoir 1.5 km (1 mi) below Halema‘uma‘u Crater at the summit of Kīlauea Volcano.

A model of the magma reservoir 1.5 km (1 mi) below Halema‘uma‘u Crater at the summit of Kīlauea Volcano.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow has been outlined in this image for comparison ...
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

The Kahauale‘a flow has been outlined in this image for comparison ...
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

Kahauale‘a Cone and the Kahauale‘a flow...
Kahauale‘a Cone and the Kahauale‘a flow
Kahauale‘a Cone and the Kahauale‘a flow
Kahauale‘a Cone and the Kahauale‘a flow

Kahauale‘a Cone, shown here, has long been a small oasis in the midst of Pu‘u ‘Ō‘ō lava. New lava from the active Kahauale‘a flow has now surrounded the cone, which has also partly burned. Vent structures the episode 58, active from 2007 to 2011, are in the background just behind Kahauale‘a. Pu‘u ‘Ō‘ō is out of sight to the right.

Kahauale‘a Cone, shown here, has long been a small oasis in the midst of Pu‘u ‘Ō‘ō lava. New lava from the active Kahauale‘a flow has now surrounded the cone, which has also partly burned. Vent structures the episode 58, active from 2007 to 2011, are in the background just behind Kahauale‘a. Pu‘u ‘Ō‘ō is out of sight to the right.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...
The Kahauale‘a flow, at the center of the photo, has reached 4.4 km...

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow, at the center of the photo, has reached 4.4 km (2.7 miles) northeast from its source in Pu‘u ‘Ō‘ō, which is in the background.

The Kahauale‘a flow has been outlined in this image for comparison ...
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined
The Kahauale‘a flow has been outlined

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

The Kahauale‘a flow has been outlined in this image for comparison with the previous photo.

South winds permitted clear views into the south portion of the Ove...
South winds permitted clear views into south portion of the Overloo...
South winds permitted clear views into south portion of the Overloo...
South winds permitted clear views into south portion of the Overloo...

South winds permitted clear views into the south portion of the Overlook crater, which is often obscured by thick fume. The bright orange area is the location where lava at the surface of the lake sinks back into the system, with spattering and degassing common in this area.

South winds permitted clear views into the south portion of the Overlook crater, which is often obscured by thick fume. The bright orange area is the location where lava at the surface of the lake sinks back into the system, with spattering and degassing common in this area.

Spattering is common in the area where lava sinks back into the sys...
Spattering is common in the area where lava sinks back into system,...
Spattering is common in the area where lava sinks back into system,...
Spattering is common in the area where lava sinks back into system,...

Spattering is common in the area where lava sinks back into the system, and this photo shows these processes are occurring in a small grotto. In the right portion of the photo, the ledge occupying much of the south part of the Overlook crater is visible.

Spattering is common in the area where lava sinks back into the system, and this photo shows these processes are occurring in a small grotto. In the right portion of the photo, the ledge occupying much of the south part of the Overlook crater is visible.

Flows northeast of Pu‘u ‘Ō‘ō and views of the lava lake in Halema‘u...
Flows NE of Pu‘u ‘Ō‘ō & views of the lava lake in Halema‘uma‘u
Flows NE of Pu‘u ‘Ō‘ō & views of the lava lake in Halema‘uma‘u
Flows NE of Pu‘u ‘Ō‘ō & views of the lava lake in Halema‘uma‘u

This photo looks northeast and shows Pu‘u ‘Ō‘ō crater. Recent activity has been focused around a few spatter cones on the crater floor. At the far edge of the crater, a small lava pond has been active and has been the source of flows extending northeast of Pu‘u ‘Ō‘ō. Those flows are visible at the top-center of the photo.

This photo looks northeast and shows Pu‘u ‘Ō‘ō crater. Recent activity has been focused around a few spatter cones on the crater floor. At the far edge of the crater, a small lava pond has been active and has been the source of flows extending northeast of Pu‘u ‘Ō‘ō. Those flows are visible at the top-center of the photo.

South winds permitted clear views into the south portion of the Ove...
South winds permitted clear views into south portion of the Overloo...
South winds permitted clear views into south portion of the Overloo...
South winds permitted clear views into south portion of the Overloo...

South winds permitted clear views into the south portion of the Overlook crater, which is often obscured by thick fume. The bright orange area is the location where lava at the surface of the lake sinks back into the system, with spattering and degassing common in this area.

South winds permitted clear views into the south portion of the Overlook crater, which is often obscured by thick fume. The bright orange area is the location where lava at the surface of the lake sinks back into the system, with spattering and degassing common in this area.

Spattering is common in the area where lava sinks back into the sys...
Spattering is common in the area where lava sinks back into system,...
Spattering is common in the area where lava sinks back into system,...
Spattering is common in the area where lava sinks back into system,...

Spattering is common in the area where lava sinks back into the system, and this photo shows these processes are occurring in a small grotto. In the right portion of the photo, the ledge occupying much of the south part of the Overlook crater is visible.

Spattering is common in the area where lava sinks back into the system, and this photo shows these processes are occurring in a small grotto. In the right portion of the photo, the ledge occupying much of the south part of the Overlook crater is visible.

Kīlauea's summit eruption in Halema‘uma‘u is nearly five years old...
Kīlauea's summit eruption in Halema‘uma‘u is nearly five years old
Kīlauea's summit eruption in Halema‘uma‘u is nearly five years old
Kīlauea's summit eruption in Halema‘uma‘u is nearly five years old

An active lava lake is contained within the Overlook crater, within Halema‘uma‘u Crater at the summit of Kīlauea Volcano. The summit eruption began on March 19, 2008, and is now nearly five years old. The Hawaiian Volcano Observatory and Jaggar Museum are visible as a small bump on the horizon in the upper right portion of the image.

An active lava lake is contained within the Overlook crater, within Halema‘uma‘u Crater at the summit of Kīlauea Volcano. The summit eruption began on March 19, 2008, and is now nearly five years old. The Hawaiian Volcano Observatory and Jaggar Museum are visible as a small bump on the horizon in the upper right portion of the image.

A closer look at the flow
Pu‘u ‘Ō‘ō — Flow
Pu‘u ‘Ō‘ō — Flow
Pu‘u ‘Ō‘ō — Flow

A closer look at the flow extending northeast of Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō cone is at the right edge of the photo, and view is towards the northeast. In the foreground, two sources of fume mark the path of the lava tube supplying lava to the flow front. In the top-left, a few sources of smoke mark where the flow margin is burning moss and lichen on older flows.

A closer look at the flow extending northeast of Pu‘u ‘Ō‘ō. Pu‘u ‘Ō‘ō cone is at the right edge of the photo, and view is towards the northeast. In the foreground, two sources of fume mark the path of the lava tube supplying lava to the flow front. In the top-left, a few sources of smoke mark where the flow margin is burning moss and lichen on older flows.

Field studies at Gede Volcano, West Java (Indonesia)....
Field studies at Gede Volcano, West Java (Indonesia).
Field studies at Gede Volcano, West Java (Indonesia).
Field studies at Gede Volcano, West Java (Indonesia).

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.

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.

Halema‘uma‘u Eruption Reaches Five-Year Anniversary...
Halema‘uma‘u Eruption Reaches Five-Year Anniversary
Halema‘uma‘u Eruption Reaches Five-Year Anniversary
Halema‘uma‘u Eruption Reaches Five-Year Anniversary

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.

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.

Ocean entry and coastal plain breakouts remain active...
Ocean entry and coastal plain breakouts remain active
Ocean entry and coastal plain breakouts remain active
Ocean entry and coastal plain breakouts remain active

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.

Ocean entry and coastal plain breakouts remain active...
Ocean entry and coastal plain breakouts remain active
Ocean entry and coastal plain breakouts remain active
Ocean entry and coastal plain breakouts remain active

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.