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Images related to natural hazards.

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Active flows running along National Park boundary on coastal plain...
Active flows running along National Park boundary on coastal plain
Active flows running along National Park boundary on coastal plain
Active flows running along National Park boundary on coastal plain

The active flow front was about 780 m (0.5 miles) from the shoreline today, with a portion of the flow front following along the margin of Hawai‘i Volcanoes National Park. In this photo, the recently active flow margin (lighter color flows) stalled just a meter or so from one of the Park boundary signs.

The active flow front was about 780 m (0.5 miles) from the shoreline today, with a portion of the flow front following along the margin of Hawai‘i Volcanoes National Park. In this photo, the recently active flow margin (lighter color flows) stalled just a meter or so from one of the Park boundary signs.

Hurricane Sandy created a breach in the Otis Pike High Dunes Wilderness Area at Fire Island National Seashore in NY
Hurricane Sandy created a breach in a barrier island
Hurricane Sandy created a breach in a barrier island
Hurricane Sandy created a breach in a barrier island

Extreme storms can drastically increase water levels and wave energy causing a breach, or complete erosion of the island itself. Hurricane Sandy created a breach in the Otis Pike High Dunes Wilderness Area at Fire Island National Seashore in NY.

Extreme storms can drastically increase water levels and wave energy causing a breach, or complete erosion of the island itself. Hurricane Sandy created a breach in the Otis Pike High Dunes Wilderness Area at Fire Island National Seashore in NY.

An aerial image of a barrier island showing sediment that has been eroded from dunes and beach and redeposited into the estuary.
Hurricane Sandy leveled dunes and moved sediment into the estuary
Hurricane Sandy leveled dunes and moved sediment into the estuary
Hurricane Sandy leveled dunes and moved sediment into the estuary

Hurricane Sandy leveled dunes and moved eroded sediment from the dunes and beach across the island and into the estuary (Great South Bay) at Fire Island, NY.

Satellite image of active breakouts on coastal plain...
Image of active breakouts on coastal plain
Image of active breakouts on coastal plain
Image of active breakouts on coastal plain

This image was captured on Saturday, November 3, by the Advanced Land Imager sensor aboard 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 or very recently active lava flows.

This image was captured on Saturday, November 3, by the Advanced Land Imager sensor aboard 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 or very recently active lava flows.

Images comparing October change in Pu‘u ‘Ō‘ō...
Images comparing Oct. change in Pu‘u ‘Ō‘ō
Images comparing Oct. change in Pu‘u ‘Ō‘ō
Images comparing Oct. change in Pu‘u ‘Ō‘ō

Time-lapse camera image captured on October 1 from the north rim of Pu‘u ‘Ō‘ō showing the small lava lake in the pit on the northeastern edge of the crater floor. The fume in the background is rising from two openings on the southeastern side of the crater.

Time-lapse camera image captured on October 1 from the north rim of Pu‘u ‘Ō‘ō showing the small lava lake in the pit on the northeastern edge of the crater floor. The fume in the background is rising from two openings on the southeastern side of the crater.

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on November 1. The northeastern pit has been filled, and the lava lake is now contained within levees, perched higher than the adjacent crater floor. The lake is weakly spattering behind the new cone in the foreground to the left side of the image.

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on November 1. The northeastern pit has been filled, and the lava lake is now contained within levees, perched higher than the adjacent crater floor. The lake is weakly spattering behind the new cone in the foreground to the left side of the image.

Images comparing October change in Pu‘u ‘Ō‘ō...
Images comparing Oct. change in Pu‘u ‘Ō‘ō
Images comparing Oct. change in Pu‘u ‘Ō‘ō
Images comparing Oct. change in Pu‘u ‘Ō‘ō

Time-lapse camera image captured on October 1 from the north rim of Pu‘u ‘Ō‘ō showing the small lava lake in the pit on the northeastern edge of the crater floor. The fume in the background is rising from two openings on the southeastern side of the crater.

Time-lapse camera image captured on October 1 from the north rim of Pu‘u ‘Ō‘ō showing the small lava lake in the pit on the northeastern edge of the crater floor. The fume in the background is rising from two openings on the southeastern side of the crater.

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...
Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on...

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on November 1. The northeastern pit has been filled, and the lava lake is now contained within levees, perched higher than the adjacent crater floor. The lake is weakly spattering behind the new cone in the foreground to the left side of the image.

Time-lapse camera image from the north rim of Pu‘u ‘Ō‘ō captured on November 1. The northeastern pit has been filled, and the lava lake is now contained within levees, perched higher than the adjacent crater floor. The lake is weakly spattering behind the new cone in the foreground to the left side of the image.

This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....

This thermal image shows an overview of active surface flows today. There was a small area of active surface flows near the top of the pali, at the top of Royal Gardens subdivision, but most of the surface flows were active on the coastal plain.

This thermal image shows an overview of active surface flows today. There was a small area of active surface flows near the top of the pali, at the top of Royal Gardens subdivision, but most of the surface flows were active on the coastal plain.

This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....
This thermal image shows an overview of active surface flows today....

This thermal image shows an overview of active surface flows today. There was a small area of active surface flows near the top of the pali, at the top of Royal Gardens subdivision, but most of the surface flows were active on the coastal plain.

This thermal image shows an overview of active surface flows today. There was a small area of active surface flows near the top of the pali, at the top of Royal Gardens subdivision, but most of the surface flows were active on the coastal plain.

At Halema‘uma‘u, the lava has dropped over the past week to levels ...
At Halema‘uma‘u, the lava has dropped over the past week to levels ...
At Halema‘uma‘u, the lava has dropped over the past week to levels ...
At Halema‘uma‘u, the lava has dropped over the past week to levels ...

At Halema‘uma‘u, the lava has dropped over the past week to levels more typical of the last few months. Today, the lava was slightly below the deep inner ledge, with spattering along the southwest lake margin.

At Halema‘uma‘u, the lava has dropped over the past week to levels more typical of the last few months. Today, the lava was slightly below the deep inner ledge, with spattering along the southwest lake margin.

Episode 61 (Peace Day) flow field...
Episode 61 (Peace Day) flow field
Episode 61 (Peace Day) flow field
Episode 61 (Peace Day) flow field

Map showing the extent of lava flows erupted during Kīlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Map showing the extent of lava flows erupted during Kīlauea's ongoing east rift zone eruption and labeled with the years in which they were active.

Flows on coastal plain and activity in Pu‘u ‘Ō‘ō...
Flows on coastal plain and activity in Pu‘u ‘Ō‘ō
Flows on coastal plain and activity in Pu‘u ‘Ō‘ō
Flows on coastal plain and activity in Pu‘u ‘Ō‘ō

This view towards the southeast shows the vent area and upper lava tube system. In the lower right is Pu‘u ‘Ō‘ō crater, with a small circular lava lake in the northeast portion of the crater floor.

This view towards the southeast shows the vent area and upper lava tube system. In the lower right is Pu‘u ‘Ō‘ō crater, with a small circular lava lake in the northeast portion of the crater floor.

Mount Hood with Portland International Airport (Oregon) in the fore...
Mount Hood with Portland International Airport (OR) in the foregrou...
Mount Hood with Portland International Airport (OR) in the foregrou...
Mount Hood with Portland International Airport (OR) in the foregrou...

Mount Hood with Portland International Airport (Oregon) in the foreground. An ash-producing eruption of Mount Hood could ground air traffic and significantly impact commerce in surrounding states.

Image: Sandbar growth Grand Canyon following controlled flood
Sandbar growth Grand Canyon following controlled flood
Sandbar growth Grand Canyon following controlled flood
Sandbar growth Grand Canyon following controlled flood

Picture showing the increased size of the sandbar after the November 2012 controlled flood from the Glen Canyon Dam. This location is 65 miles downstream from Lees Ferry and the view is looking downstream. These and additional photographs depicting the results of the recent controlled floods can be viewed online.

Picture showing the increased size of the sandbar after the November 2012 controlled flood from the Glen Canyon Dam. This location is 65 miles downstream from Lees Ferry and the view is looking downstream. These and additional photographs depicting the results of the recent controlled floods can be viewed online.

Continued activity on coastal plain but little advancement...
Continued activity on coastal plain but little advancement
Continued activity on coastal plain but little advancement
Continued activity on coastal plain but little advancement

pāhoehoe flows are still active on the coastal plain but have advanced little over the past week. On today's field visit, the active flow front was about 1.3 km (0.8 miles) from the ocean. In the background, the remains of Royal Gardens subdivision can be seen on the pali, with the fume sources marking the path of the lava tube.

pāhoehoe flows are still active on the coastal plain but have advanced little over the past week. On today's field visit, the active flow front was about 1.3 km (0.8 miles) from the ocean. In the background, the remains of Royal Gardens subdivision can be seen on the pali, with the fume sources marking the path of the lava tube.

YVO Webcam, October 27, 2012. Webcam overlooks Biscuit Basin in Yel...
YVO Webcam, Oct. 27, 2012. Webcam overlooks Biscuit Basin in YNP.
YVO Webcam, Oct. 27, 2012. Webcam overlooks Biscuit Basin in YNP.
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