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Images related to natural hazards.

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A closer look at the lava stream plunging into the crack. The lava...
lava stream plunging into crack. The lava is fed from the vent on ...
lava stream plunging into crack. The lava is fed from the vent on ...
lava stream plunging into crack. The lava is fed from the vent on ...

A closer look at the lava stream plunging into the crack. The lava is fed from the vent on Pu‘u ‘Ō‘ō via a lava tube.

North of where lava is entering the crack, another lobe is pushing ...
Lobe is pushing through thick forest, triggering small brush fires
Lobe is pushing through thick forest, triggering small brush fires
Lobe is pushing through thick forest, triggering small brush fires

North of where lava is entering the crack, another lobe is pushing through thick forest, triggering small brush fires. The source of the smoke marks the front of this lobe, and Pu‘u ‘Ō‘ō can be seen just above this spot.

North of where lava is entering the crack, another lobe is pushing through thick forest, triggering small brush fires. The source of the smoke marks the front of this lobe, and Pu‘u ‘Ō‘ō can be seen just above this spot.

June 27th lava flow continues advancing northeast, with a portion e...
June 27th lava flow continues advancing NE
June 27th lava flow continues advancing NE
June 27th lava flow continues advancing NE

This image shows a broad overview of activity at the front of the June 27th lava flow. Steaming in the lower-center portion of the photograph issues from a crack on the East Rift Zone. A portion of the lava flow has entered this crack, and the steaming extends out 1.4 km (0.9 miles) from the visible flow margin at the surface.

This image shows a broad overview of activity at the front of the June 27th lava flow. Steaming in the lower-center portion of the photograph issues from a crack on the East Rift Zone. A portion of the lava flow has entered this crack, and the steaming extends out 1.4 km (0.9 miles) from the visible flow margin at the surface.

Looking west, this photo shows the far end of the steaming that ext...
Looking west, shows the far end of the steaming that extends out be...
Looking west, shows the far end of the steaming that extends out be...
Looking west, shows the far end of the steaming that extends out be...

Looking west, this photo shows the far end of the steaming that extends out beyond the visible flow margin at the surface.

A view looking east, near the front of the southern lobe that has e...
A view looking east, near front of the southern lobe that has enter...
A view looking east, near front of the southern lobe that has enter...
A view looking east, near front of the southern lobe that has enter...

A view looking east, near the front of the southern lobe that has entered the crack. Lava is inferred to be present in the deep crack beyond the visible margin of the flow, based on the line of steam sources as well as a vigorous cascade of lava seen in a skylight in the bottom portion of the photo.

A view looking east, near the front of the southern lobe that has entered the crack. Lava is inferred to be present in the deep crack beyond the visible margin of the flow, based on the line of steam sources as well as a vigorous cascade of lava seen in a skylight in the bottom portion of the photo.

A closer look at one of the steam sources. The crack from which st...
A closer look at one of the steam sources. The crack from which st...
A closer look at one of the steam sources. The crack from which st...
A closer look at one of the steam sources. The crack from which st...

A closer look at one of the steam sources. The crack from which steam is issuing is not visible through the thick vegetation.

Schematic showing the general setting of seeps on the US Atlantic margin and related processes, such as gas hydrate degradation,
U.S. Atlantic Margin Seeps
U.S. Atlantic Margin Seeps
U.S. Atlantic Margin Seeps

Schematic showing the general setting of seeps on the US Atlantic margin and related processes, such as gas hydrate degradation, groundwater seepage, leakage through fractured rocks, or emissions from the seafloor overlying salt diapirs. Pockmarks shown in white, and the nominal updip limit of gas hydrate stability is represented by the dashed black line.

Schematic showing the general setting of seeps on the US Atlantic margin and related processes, such as gas hydrate degradation, groundwater seepage, leakage through fractured rocks, or emissions from the seafloor overlying salt diapirs. Pockmarks shown in white, and the nominal updip limit of gas hydrate stability is represented by the dashed black line.

Sample preparation and processing area
Sample preparation and processing area
Sample preparation and processing area
Sample preparation and processing area

Sample preparation and processing area in the K.O. Emery Geotechnical Wing at the Woods Hole Coastal and Marine Science Center, Woods Hole, MA

The surface flows active at the front of the June 27 lava flow are ...
The surface flows active at the front of the June 27 lava flow are ...
The surface flows active at the front of the June 27 lava flow are ...
The surface flows active at the front of the June 27 lava flow are ...

The surface flows active at the front of the June 27 lava flow are fed from lava flowing through a lava tube. This collapse of a portion of the roof has produced a skylight, and a direct view of the fluid lava stream several meters (yards) beneath the surface.

The surface flows active at the front of the June 27 lava flow are fed from lava flowing through a lava tube. This collapse of a portion of the roof has produced a skylight, and a direct view of the fluid lava stream several meters (yards) beneath the surface.

June 27 lava flow remains active in forest northeast of Pu‘u ‘Ō‘ō...
June 27 lava flow remains active in forest NE of Pu‘u ‘Ō‘ō
June 27 lava flow remains active in forest NE of Pu‘u ‘Ō‘ō
June 27 lava flow remains active in forest NE of Pu‘u ‘Ō‘ō

The June 27 lava flow remains active as a narrow lobe pushing through thick forest northeast of Pu‘u ‘Ō‘ō, triggering small brush fires. This view is to the east, with the forested cone of Heiheiahulu partly obscured by the smoke plume from this angle. The flow front today was 8.7 km (5.4 miles) northeast of the vent on Pu‘u ‘Ō‘ō.

The June 27 lava flow remains active as a narrow lobe pushing through thick forest northeast of Pu‘u ‘Ō‘ō, triggering small brush fires. This view is to the east, with the forested cone of Heiheiahulu partly obscured by the smoke plume from this angle. The flow front today was 8.7 km (5.4 miles) northeast of the vent on Pu‘u ‘Ō‘ō.

Another skylight and view into the tube supplying lava to the front...
Tube supplying lava to front of the June 27 lava flow.
Tube supplying lava to front of the June 27 lava flow.
Tube supplying lava to front of the June 27 lava flow.

Another skylight and view into the tube supplying lava to the front of the June 27 lava flow.

A remarkable perched lava pond was active on the June 27 lava flow ...
A remarkable perched lava pond was active on the June 27 lava flow ...
A remarkable perched lava pond was active on the June 27 lava flow ...
A remarkable perched lava pond was active on the June 27 lava flow ...

A remarkable perched lava pond was active on the June 27 lava flow more than a month ago. On August 12 a small lava flow erupted from the rim of the inactive pond, with the flow presumably originating from fluid lava that remained in the perched pond interior.

A remarkable perched lava pond was active on the June 27 lava flow more than a month ago. On August 12 a small lava flow erupted from the rim of the inactive pond, with the flow presumably originating from fluid lava that remained in the perched pond interior.

University of Hawai‘i students complete summer internships at the H...
Univ. of Hawai‘i students complete summer internships at the HVO
Univ. of Hawai‘i students complete summer internships at the HVO
Univ. of Hawai‘i students complete summer internships at the HVO

Greg Javar snaps a "selfie" while helping USGS Hawaiian Volcano Observatory geologist Matt Patrick (right) set up a thermal camera to record lava lake activity within the summit vent of Kīlauea Volcano.

Greg Javar snaps a "selfie" while helping USGS Hawaiian Volcano Observatory geologist Matt Patrick (right) set up a thermal camera to record lava lake activity within the summit vent of Kīlauea Volcano.

Portions of the June 27 lava flow continue to expand and cover olde...
Portions of the June 27 lava flow from Pu‘u ‘Ō‘ō.
Portions of the June 27 lava flow from Pu‘u ‘Ō‘ō.
Portions of the June 27 lava flow from Pu‘u ‘Ō‘ō.

Portions of the June 27 lava flow continue to expand and cover older flows from Pu‘u ‘Ō‘ō.

June 27 flow continues advancing through forest northeast of Pu‘u ‘...
June 27 flow continues advancing through forest NE of Pu‘u ‘Ō‘ō
June 27 flow continues advancing through forest NE of Pu‘u ‘Ō‘ō
June 27 flow continues advancing through forest NE of Pu‘u ‘Ō‘ō

The June 27 flow remains active, and has advanced further into the forest over the past week. The flow front today was 8.5 km (5.3 miles) northeast of the vent on Pu‘u ‘Ō‘ō (see "map" link above for current flow field map). The flow's continued brisk advance rate is likely related, in part, to its continued confinement by local topography.

The June 27 flow remains active, and has advanced further into the forest over the past week. The flow front today was 8.5 km (5.3 miles) northeast of the vent on Pu‘u ‘Ō‘ō (see "map" link above for current flow field map). The flow's continued brisk advance rate is likely related, in part, to its continued confinement by local topography.

A skylight reveals the fluid lava stream within the main tube on th...
A skylight reveals the fluid lava stream within the main tube on th...
A skylight reveals the fluid lava stream within the main tube on th...
A skylight reveals the fluid lava stream within the main tube on th...

A skylight reveals the fluid lava stream within the main tube on the June 27 lava flow. The recently active perched lava pond is in the upper left portion of the photograph.

Another view of the flow front, looking east. The small bump on th...
flow front, looking east. The small bump on the horizon, near cent...
flow front, looking east. The small bump on the horizon, near cent...
flow front, looking east. The small bump on the horizon, near cent...

Another view of the flow front, looking east. The small bump on the horizon, near the center of the photograph, is the forested cone of Heiheiahulu.

Thick fume continues to obscure views into Pu‘u ‘Ō‘ō Crater with th...
Thick fume continues to obscure views into Pu‘u ‘Ō‘ō
Thick fume continues to obscure views into Pu‘u ‘Ō‘ō
Thick fume continues to obscure views into Pu‘u ‘Ō‘ō

Thick fume continues to obscure views into Pu‘u ‘Ō‘ō Crater with the naked eye. The thermal camera has proven useful recently to see the hidden activity, which includes several small lava ponds (see thermal image from the July 29 overflight, below).

Thick fume continues to obscure views into Pu‘u ‘Ō‘ō Crater with the naked eye. The thermal camera has proven useful recently to see the hidden activity, which includes several small lava ponds (see thermal image from the July 29 overflight, below).

A closer look into the skylight on the June 27 lava flow, revealing...
A closer look into skylight on the June 27 lava flow, revealing com...
A closer look into skylight on the June 27 lava flow, revealing com...
A closer look into skylight on the June 27 lava flow, revealing com...

A closer look into the skylight on the June 27 lava flow, revealing complex structure within the lava tube. The bright incandescent area is the fluid lava stream, which was slowly but steadily flowing through the tube.

A closer look into the skylight on the June 27 lava flow, revealing complex structure within the lava tube. The bright incandescent area is the fluid lava stream, which was slowly but steadily flowing through the tube.

Kīlauea's east rift zone flow field...
Kīlauea's ERZ flow field
Kīlauea's ERZ flow field
Kīlauea's ERZ flow field

Map showing the June 27th flow at Pu‘u ‘Ō‘ō in Kīlauea's East Rift Zone in relation to the eastern part of the Island of Hawai‘i as of August 12, 2014. The area of the flow as mapped on August 6 is shown in pink, while widening and advancement of the flow as of August 12 is shown in red.

Map showing the June 27th flow at Pu‘u ‘Ō‘ō in Kīlauea's East Rift Zone in relation to the eastern part of the Island of Hawai‘i as of August 12, 2014. The area of the flow as mapped on August 6 is shown in pink, while widening and advancement of the flow as of August 12 is shown in red.

Lava lake activity continues in Halema‘uma‘u Crater...
Lava lake activity continues in Halema‘uma‘u
Lava lake activity continues in Halema‘uma‘u
Lava lake activity continues in Halema‘uma‘u

The usual lava lake activity continues in Halema‘uma‘u Crater with no major changes related to the recent hurricane. This afternoon the lake surface was about 40 meters (130 ft) below the floor of Halema‘uma‘u Crater, which has been typical over the past several weeks.

The usual lava lake activity continues in Halema‘uma‘u Crater with no major changes related to the recent hurricane. This afternoon the lake surface was about 40 meters (130 ft) below the floor of Halema‘uma‘u Crater, which has been typical over the past several weeks.

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