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Volcano Hazard Program videos.

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Pāhoehoe Breakout
Pāhoehoe Breakout
Pāhoehoe Breakout

This video clip, filmed on August 12, 2016, shows a typical pāhoehoe breakout on Kīlauea Volcano's "61g" lava flow (actual speed).

This video clip, filmed on August 12, 2016, shows a typical pāhoehoe breakout on Kīlauea Volcano's "61g" lava flow (actual speed).

Aerial video of Kīlauea Volcano's summit lava lake
Aerial video of Kīlauea Volcano's summit lava lake
Aerial video of Kīlauea Volcano's summit lava lake

This aerial video footage, filmed by USGS in late July 2016, features Kīlauea Volcano's summit vent within Halema‘uma‘u Crater.

GeoGirls: Five days of discovery at Mount St. Helens
GeoGirls: Five days of discovery at Mount St. Helens
GeoGirls: Five days of discovery at Mount St. Helens

Twenty middle-school girls from Washington and Oregon participated in the 2016 “GeoGirls” outdoor volcano science program at Mount St. Helens, jointly organized by the U.S. Geological Survey and the Mount St. Helens Institute. 

Twenty middle-school girls from Washington and Oregon participated in the 2016 “GeoGirls” outdoor volcano science program at Mount St. Helens, jointly organized by the U.S. Geological Survey and the Mount St. Helens Institute. 

July Public Lecture — USGS CalVO: It's not just earthquake country!
July Public Lecture — USGS CalVO: It's not just earthquake country!
July Public Lecture — USGS CalVO: It's not just earthquake country!

Volcanic eruptions occur int he State about as frequently as the large San Andreas Fault Zone earthquakes. California's "watch list" volcanoes are dispersed throughout the State and future eruptions are inevitable—the likelihood of renewed volcanism is on the order of one in a few hundred to one in a few thousand annually.

Volcanic eruptions occur int he State about as frequently as the large San Andreas Fault Zone earthquakes. California's "watch list" volcanoes are dispersed throughout the State and future eruptions are inevitable—the likelihood of renewed volcanism is on the order of one in a few hundred to one in a few thousand annually.

Ocean Entry Southeast of Pu`u `Ō`ō
Ocean Entry Southeast of Pu`u `Ō`ō
Ocean Entry Southeast of Pu`u `Ō`ō

The lava flow southeast of Pu'u 'Ō'ō reached the ocean overnight at about 1:15 am. The narrow lobe of lava spilling over the sea cliff has built a tiny delta at the shore, with a weak ocean entry plume.

The lava flow southeast of Pu'u 'Ō'ō reached the ocean overnight at about 1:15 am. The narrow lobe of lava spilling over the sea cliff has built a tiny delta at the shore, with a weak ocean entry plume.

Kīlauea Volcano, Halemaʻumaʻu Crater, Summit Vent Lava Lake (4K)
Kīlauea Volcano, Halemaʻumaʻu Crater, Summit Vent Lava Lake (4K)
Inside USGS, No. 6, Ken Pierce, Heavy Breathing of Yellowstone Caldera
Inside USGS, No. 6, Ken Pierce, Heavy Breathing of Yellowstone Caldera
Inside USGS, No. 6, Ken Pierce, Heavy Breathing of Yellowstone Caldera

Dr. Kenneth Pierce studied the geology and geomorphology of the greater Yellowstone area for nearly his entire career with the U.S. Geological Survey. From 1965 to present, Dr.

Inside USGS, No. 5, Pleistocene Glaciations of Greater Yellowstone
Inside USGS, No. 5, Pleistocene Glaciations of Greater Yellowstone
Inside USGS, No. 5, Pleistocene Glaciations of Greater Yellowstone

Dr. Kenneth Pierce studied the geology and geomorphology of the greater Yellowstone area for nearly his entire career with the U.S. Geological Survey. From 1965 to present, Dr.

Channelized Lava Flow
Channelized Lava Flow
Channelized Lava Flow

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and has crossed roughly half of the coastal plain. Upslope of the flow front there was still some 'a'ā activity, with several small open channels on the pali. The front of the flow was 1.7 km (1.1 miles) from the ocean today.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and has crossed roughly half of the coastal plain. Upslope of the flow front there was still some 'a'ā activity, with several small open channels on the pali. The front of the flow was 1.7 km (1.1 miles) from the ocean today.

Activity on Flow Front
Activity on Flow Front
Activity on Flow Front

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and has begun crossing the coastal plain. The leading portion of the flow now consists ot pāhoehoe, shown in this video. Upslope of the flow front there was still some 'a'ā activity, with a few small open channels on the pali.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and has begun crossing the coastal plain. The leading portion of the flow now consists ot pāhoehoe, shown in this video. Upslope of the flow front there was still some 'a'ā activity, with a few small open channels on the pali.

Channelized Lava Flow
Channelized Lava Flow
Channelized Lava Flow

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and reached the base of the pali yesterday. The leading portion of the flow still consists of narrow channelized 'a'ā streaming down the steep part of the pali.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and reached the base of the pali yesterday. The leading portion of the flow still consists of narrow channelized 'a'ā streaming down the steep part of the pali.

Flow Front Moving Through Vegetation
Flow Front Moving Through Vegetation
Flow Front Moving Through Vegetation

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and was reaching the base of the pali today. Although the malority of the flow activity is pāhoehoe, the fast-moving flow front IS channe ized 'a'ā. The leading tip of the flow is burning vegetation in a kīpuka.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and was reaching the base of the pali today. Although the malority of the flow activity is pāhoehoe, the fast-moving flow front IS channe ized 'a'ā. The leading tip of the flow is burning vegetation in a kīpuka.

Channelized `A`ā Forming
Channelized `A`ā Forming
Channelized `A`ā Forming

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and is now progressing down the pali. The flow is following the eastern boundary of Hawai'i Volcanoes National Park, and the western boundary of the abandoned Royal Gardens subdivision. Although the majority of the flow activity is pāhoehoe, the fast-moving flow front is channelized 'a'ā.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and is now progressing down the pali. The flow is following the eastern boundary of Hawai'i Volcanoes National Park, and the western boundary of the abandoned Royal Gardens subdivision. Although the majority of the flow activity is pāhoehoe, the fast-moving flow front is channelized 'a'ā.

Spattering at Kīlauea's Summit Lava Lake
Spattering at Kīlauea's Summit Lava Lake
Spattering at Kīlauea's Summit Lava Lake

The lava lake at Kilauea's summit has risen over the past few days, providing improved views of the lake activity. Spattering along the southern lake margin was vi orous this evening, but within the range of normal activity for the la e. Spatter was thrown as high as the Halema'uma'u Crater floor, about 25 m (80 ft) above the lake surface.

The lava lake at Kilauea's summit has risen over the past few days, providing improved views of the lake activity. Spattering along the southern lake margin was vi orous this evening, but within the range of normal activity for the la e. Spatter was thrown as high as the Halema'uma'u Crater floor, about 25 m (80 ft) above the lake surface.

Catching the Quakes - Using Seismic Signals to Track Debris Flows
Catching the Quakes - Using Seismic Signals to Track Debris Flows
Catching the Quakes - Using Seismic Signals to Track Debris Flows

USGS Research Geophysicist Kate Allstadt conducts experiments at the U.S. Geological Survey debris-flow flume, near Eugene, Oregon. Dr. Allstadt and her group are working toward an understanding of how debris flows generate seismic signals.

USGS Research Geophysicist Kate Allstadt conducts experiments at the U.S. Geological Survey debris-flow flume, near Eugene, Oregon. Dr. Allstadt and her group are working toward an understanding of how debris flows generate seismic signals.

Skylight and Small Flow
Skylight and Small Flow
Skylight and Small Flow

The two breakouts that began at Pu'u 'Ō'ō on May 24 are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points. The eastern breakout, shown here, was developing a lava tube. A collapse in the roof of the tube provided a view of the lava stream.

The two breakouts that began at Pu'u 'Ō'ō on May 24 are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points. The eastern breakout, shown here, was developing a lava tube. A collapse in the roof of the tube provided a view of the lava stream.

Spattering at Kīlauea's Summit Lava Lake
Spattering at Kīlauea's Summit Lava Lake
Spattering at Kīlauea's Summit Lava Lake

Video of spattering along the north margin of Kīlauea Volcano's summit lava lake.

Two Breakouts from Pu`u `Ō`ō
Two Breakouts from Pu`u `Ō`ō
Two Breakouts from Pu`u `Ō`ō

The two breakouts that began at Pu‘u ‘Ō‘ō yesterday (May 24) are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points.

The two breakouts that began at Pu‘u ‘Ō‘ō yesterday (May 24) are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points.

Large Breakout Flow
Large Breakout Flow
Large Breakout Flow

Two new breakouts at Pu`u `Ō`ō began this morning just before 7:00 a.m., HST. The larger of the two breakouts, shown here, originated from the northeast flank of the cone, and fed a vigrous channelized flow that extended about 1 km (0.6 miles) towards the northwest.

Two new breakouts at Pu`u `Ō`ō began this morning just before 7:00 a.m., HST. The larger of the two breakouts, shown here, originated from the northeast flank of the cone, and fed a vigrous channelized flow that extended about 1 km (0.6 miles) towards the northwest.

Subtle uplift of Pu‘u ‘Ō‘ō Crater floor over past few days
Subtle uplift of Pu‘u ‘Ō‘ō Crater floor over past few days
Subtle uplift of Pu‘u ‘Ō‘ō Crater floor over past few days

The crater floor at Pu‘u ‘Ō‘ō has recently experienced minor uplift due to inflation within Pu‘u ‘Ō‘ō cone. The crater floor uplift is subtle, and probably no more than about 1 meter (3 feet) since May 15. Small, hot cracks have appeared on the crater floor during the uplift.

The crater floor at Pu‘u ‘Ō‘ō has recently experienced minor uplift due to inflation within Pu‘u ‘Ō‘ō cone. The crater floor uplift is subtle, and probably no more than about 1 meter (3 feet) since May 15. Small, hot cracks have appeared on the crater floor during the uplift.

Vigorous Breakout Northeast of Pu`u `Ō`ō
Vigorous Breakout Northeast of Pu`u `Ō`ō
Vigorous Breakout Northeast of Pu`u `Ō`ō

Breakouts remained scattered northeast of Pu`u `Ō`ō, on Kīlauea's East Rift Zone. This breakout was one of many on the flow field today. The breakout was fairly vigorous at this time as geologists encountered it just moments after it started.

Breakouts remained scattered northeast of Pu`u `Ō`ō, on Kīlauea's East Rift Zone. This breakout was one of many on the flow field today. The breakout was fairly vigorous at this time as geologists encountered it just moments after it started.

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