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Images related to natural hazards.
Adult polar bear walking across a recently overwashed barrier island during a large Arctic storm in September 2016. The barrier island is offshore of Barter Island on Alaska’s north coast.
Adult polar bear walking across a recently overwashed barrier island during a large Arctic storm in September 2016. The barrier island is offshore of Barter Island on Alaska’s north coast.
Two scientists on the Arctic coastal bluff preparing a study location with cameras that they hope will run continuously, collecting images.
Two scientists on the Arctic coastal bluff preparing a study location with cameras that they hope will run continuously, collecting images.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Under trade wind conditions, Kīlauea Volcano's eastern Kamokuna lava delta is more safely viewed from outside the closed area on the east (Kalapana) side of the ocean entry. Today, trade winds were blowing the billowy white ocean entry plume, a mixture of superheated steam, hydrochloric acid, and tiny shards of volcanic glass, away from the viewing area.
Under trade wind conditions, Kīlauea Volcano's eastern Kamokuna lava delta is more safely viewed from outside the closed area on the east (Kalapana) side of the ocean entry. Today, trade winds were blowing the billowy white ocean entry plume, a mixture of superheated steam, hydrochloric acid, and tiny shards of volcanic glass, away from the viewing area.
A telephoto image of the eastern Kamokuna lava delta (from the same location as the photo above) shows lava dribbling into the sea and a closer view of the ocean entry plume.
A telephoto image of the eastern Kamokuna lava delta (from the same location as the photo above) shows lava dribbling into the sea and a closer view of the ocean entry plume.
The explosive interaction of hot lava entering cool seawater throws spatter (clots of molten lava, visible at center of image) from the leading edge of the lava delta forming at Kīlauea's Kamokuna ocean entry.
The explosive interaction of hot lava entering cool seawater throws spatter (clots of molten lava, visible at center of image) from the leading edge of the lava delta forming at Kīlauea's Kamokuna ocean entry.
A polar bear rests in a field on Barter Island, Alaska.
A polar bear rests in a field on Barter Island, Alaska.
Lava continues to flow into the ocean at Kamokuna, with two main entry areas, both forming lava deltas. The eastern lava delta is the larger of the two, and today, a broad span of small lava streams entering the sea was creating a wide ocean entry plume. The smaller western entry was feeding a weaker plume.
Lava continues to flow into the ocean at Kamokuna, with two main entry areas, both forming lava deltas. The eastern lava delta is the larger of the two, and today, a broad span of small lava streams entering the sea was creating a wide ocean entry plume. The smaller western entry was feeding a weaker plume.
Another view of the ocean entries, with the eastern entry in the foreground. For scale, a boat can be seen in the lower left portion of the image.
Another view of the ocean entries, with the eastern entry in the foreground. For scale, a boat can be seen in the lower left portion of the image.
The lava lake at the summit of Kīlauea remained at a high level today, about 18 m (60 ft) from the floor of Halema‘uma‘u Crater at the time of this photo.
The lava lake at the summit of Kīlauea remained at a high level today, about 18 m (60 ft) from the floor of Halema‘uma‘u Crater at the time of this photo.
The eastern (right) lava delta is the larger of the two, with a broad span of small lava flows entering the sea creating a wide ocean entry plume. Fewer flows on the smaller western (left) entry created a weaker plume.
The eastern (right) lava delta is the larger of the two, with a broad span of small lava flows entering the sea creating a wide ocean entry plume. Fewer flows on the smaller western (left) entry created a weaker plume.
A breakout from the base of the pali, which began last week, remained active today, with scattered pāhoehoe lobes near the eastern margin of the 61g lava flow. Fume from the lava tubes on the pali can be seen in the upper left part of the image.
A breakout from the base of the pali, which began last week, remained active today, with scattered pāhoehoe lobes near the eastern margin of the 61g lava flow. Fume from the lava tubes on the pali can be seen in the upper left part of the image.
Lava flows into the sea at Kamokuna on the southeast coast of Kīlauea Volcano, with two main entry areas. Both entries have formed lava deltas seaward from the previous shoreline. The eastern (right-hand side) lava delta is the larger of the two—the broad span of small lava streams entering the sea created a wider ocean-entry plume.
Lava flows into the sea at Kamokuna on the southeast coast of Kīlauea Volcano, with two main entry areas. Both entries have formed lava deltas seaward from the previous shoreline. The eastern (right-hand side) lava delta is the larger of the two—the broad span of small lava streams entering the sea created a wider ocean-entry plume.
View of Kīlauea's summit lava lake from the north rim of Halema‘uma‘u.
View of Kīlauea's summit lava lake from the north rim of Halema‘uma‘u.
Movie showing spattering near the south edge of Kīlauea's summit lava lake in Halema‘uma‘u.
Movie showing spattering near the south edge of Kīlauea's summit lava lake in Halema‘uma‘u.
Zoomed in view of the spattering at the south edge of the lava lake. Note the black high-lava mark from this morning on the wall just behind the spattering.
Zoomed in view of the spattering at the south edge of the lava lake. Note the black high-lava mark from this morning on the wall just behind the spattering.
Kīlauea's summit lava lake rose to within about 5 m (16 ft) of the floor of Halema‘uma‘u Crater this morning, before dropping back down slightly with the onset of spattering. This view, taken from the east edge of Halema‘uma‘u, shows spattering at the south corner of the lava lake.
Kīlauea's summit lava lake rose to within about 5 m (16 ft) of the floor of Halema‘uma‘u Crater this morning, before dropping back down slightly with the onset of spattering. This view, taken from the east edge of Halema‘uma‘u, shows spattering at the south corner of the lava lake.
This satellite image was captured on Thursday, September 8, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite. The image is provided courtesy of NASA's Jet Propulsion Laboratory. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.
This satellite image was captured on Thursday, September 8, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite. The image is provided courtesy of NASA's Jet Propulsion Laboratory. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.
On Wednesday evening (September 7), the lava lake at Kīlauea's summit reached a high level, about 8 m (26 feet) below the floor of Halema‘uma‘u Crater. This panorama shows the former Halema‘uma‘u Overlook (closed since 2008 due to volcanic hazards) at the far left.
On Wednesday evening (September 7), the lava lake at Kīlauea's summit reached a high level, about 8 m (26 feet) below the floor of Halema‘uma‘u Crater. This panorama shows the former Halema‘uma‘u Overlook (closed since 2008 due to volcanic hazards) at the far left.
Lava continues to flow into the sea at the Kamokuna ocean entry. This photograph, taken from the eastern margin of the lava flow, shows the eastern ocean entry site and the lava delta that has formed there. Today, several small streams of incandescent lava could be seen spilling into the water, with occasional small explosive bursts occurring in the surf.
Lava continues to flow into the sea at the Kamokuna ocean entry. This photograph, taken from the eastern margin of the lava flow, shows the eastern ocean entry site and the lava delta that has formed there. Today, several small streams of incandescent lava could be seen spilling into the water, with occasional small explosive bursts occurring in the surf.
This photo, taken by Thomas Jaggar on December 21 during the1935 Mauna Loa eruption, shows the Humuula pāhoehoe flow ponding and slowly expanding eastward. The image looks east-southeast toward Pu‘uhuluhulu from the southernmost Omaokoili cinder cone in the vicinity of today's Saddle Road and Mauna Kea Access Road juncture. USGS photo.
This photo, taken by Thomas Jaggar on December 21 during the1935 Mauna Loa eruption, shows the Humuula pāhoehoe flow ponding and slowly expanding eastward. The image looks east-southeast toward Pu‘uhuluhulu from the southernmost Omaokoili cinder cone in the vicinity of today's Saddle Road and Mauna Kea Access Road juncture. USGS photo.