Moving magma can deform the surface of the Earth. This animation shows how a tiltmeter and GPS are used to detect the subtle signs that tell scientists something about what is going on beneath the surface.
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Volcano Monitoring Animations #1: Volcano Deformation
Moving magma can deform the surface of the Earth. This animation shows how a tiltmeter and GPS are used to detect the subtle signs that tell scientists something about what is going on beneath the surface.
Volcano Monitoring Animation #2: Gas Monitoring
This animation shows how gases behave in magma and how an airplane-mounted UV spectrometer can measure gases in a volcanic plume.
This animation shows how gases behave in magma and how an airplane-mounted UV spectrometer can measure gases in a volcanic plume.
Live Chat: East Coast Earthquakes
A live, online chat about East Coast earthquakes and the Virginia 5.8M earthquake that occurred on August 23, 2011, with Dr. Michael Blanpied, Associate Coordinator for the USGS Earthquake Hazards Program.
A live, online chat about East Coast earthquakes and the Virginia 5.8M earthquake that occurred on August 23, 2011, with Dr. Michael Blanpied, Associate Coordinator for the USGS Earthquake Hazards Program.
USGS Measures Flooding at Morganza Spillway and Across Louisiana
U.S. Geological Survey crews are measuring flooding across Louisiana, including the Morganza and Bonnet Carre Spillways. Jennifer LaVista reports on USGS flood efforts along the Atchafalaya and Mississippi Rivers.
U.S. Geological Survey crews are measuring flooding across Louisiana, including the Morganza and Bonnet Carre Spillways. Jennifer LaVista reports on USGS flood efforts along the Atchafalaya and Mississippi Rivers.
PubTalk 4/2011 - Predictable Earthquakes
Title: Predictable Earthquakes - updating earthquake prediction - fact vs. fiction
Title: Predictable Earthquakes - updating earthquake prediction - fact vs. fiction
Flood Conditions in Eagle Creek, Zionsville, IN
This footage was gathered during peak water levels from the Zionsville Rd./High School Ave.
This footage was gathered during peak water levels from the Zionsville Rd./High School Ave.
Flooding in French Lick, Indiana
Video of flooding that took place located in French Lick, Indiana. This is a new USGS streamgage, near the Spring Resort & Casino.
Keep up to date with flooding problems in the midwest.
Video of flooding that took place located in French Lick, Indiana. This is a new USGS streamgage, near the Spring Resort & Casino.
Keep up to date with flooding problems in the midwest.
Flooding in Edwardsport, Indiana
This a video of flooding that took place in Edwardsport, Indiana. The video was taken on SR 358 East of Duke Power Plant. A USGS streamgage is scheduled to be installed at this site by mid summer.
Keep up to date with flooding problems in the midwest.
This a video of flooding that took place in Edwardsport, Indiana. The video was taken on SR 358 East of Duke Power Plant. A USGS streamgage is scheduled to be installed at this site by mid summer.
Keep up to date with flooding problems in the midwest.
Lava Fountaining from a Dominant Vent
Video showing low fountaining from the dominant vent, near the southwest end of the fissure system adjacent to Napau Crater, active during the day on March 7.
Video showing low fountaining from the dominant vent, near the southwest end of the fissure system adjacent to Napau Crater, active during the day on March 7.
Collapse of the Pu'u 'O 'o Crater Floor on March 5, 2011
Video showing the collapse of the Pu'u 'O 'o crater floor on March 5. The video starts at 4 am and ends at 11 pm. The floor of the crater dropped about 115 meters (377 ft) in just a few hours.
Video showing the collapse of the Pu'u 'O 'o crater floor on March 5. The video starts at 4 am and ends at 11 pm. The floor of the crater dropped about 115 meters (377 ft) in just a few hours.
Lava Flowing Into a Seemingly Bottomless Crack
This video shows lava pouring from the fissure into a seemingly bottomless crack. Napau Crater in the background. Helicopter for scale.
This video shows lava pouring from the fissure into a seemingly bottomless crack. Napau Crater in the background. Helicopter for scale.
Lava Spattering from a Persistent Vent
Video showing spattering from the most persistent vent of the day just west of the base of Pu'u 'O 'o near the northeastern end of the fissure system.
Video showing spattering from the most persistent vent of the day just west of the base of Pu'u 'O 'o near the northeastern end of the fissure system.
Fissure Eruption Between Pu'u 'O 'o and Napau Crater
Video clip shot from the air looking SW at the fissure eruption between Pu'u 'O 'o and Napau Crater. The fissure segment in the tephra in the foreground opened seconds earlier, and only about 10 minutes after the eruption as a whole started. The cracks through the tephra are in the process of opening, though this can't be picked out at this distance.
Video clip shot from the air looking SW at the fissure eruption between Pu'u 'O 'o and Napau Crater. The fissure segment in the tephra in the foreground opened seconds earlier, and only about 10 minutes after the eruption as a whole started. The cracks through the tephra are in the process of opening, though this can't be picked out at this distance.
Propagating Fissure
Video clip shot in front of the propagating fissure, showing low spattering that started moments earlier. Thick white steam from the crack in the foreground indicates that lava is about to reach the surface, and is seen doing so seconds later.
Video clip shot in front of the propagating fissure, showing low spattering that started moments earlier. Thick white steam from the crack in the foreground indicates that lava is about to reach the surface, and is seen doing so seconds later.
Spattering Near Propagating Fissure
Spattering near the front of the propagating fissure.
Spattering near the front of the propagating fissure.
Wall and rim collapses of Halema‘uma‘u
There was a series of vent wall and rim collapses on March 3, much like those than occurred in January and February. This video, compiled from the Webcam on the rim of Halema‘uma‘u above the vent, is one of the larger collapses, and shows the northwest rim of the vent falling into the lava lake.
There was a series of vent wall and rim collapses on March 3, much like those than occurred in January and February. This video, compiled from the Webcam on the rim of Halema‘uma‘u above the vent, is one of the larger collapses, and shows the northwest rim of the vent falling into the lava lake.
Halema'uma'u Northwest Rim Collapse
There was a series of vent wall and rim collapses on March 3, much like those that occurred in January and February. This video, compiled from the Webcam on the rim of Halema'uma'u above the vent, is one of the larger collapses, and shows the northwest rim of the vent falling into the lava lake.
There was a series of vent wall and rim collapses on March 3, much like those that occurred in January and February. This video, compiled from the Webcam on the rim of Halema'uma'u above the vent, is one of the larger collapses, and shows the northwest rim of the vent falling into the lava lake.
Halema'uma'u North Rim Collapse
This video, compiled from the Webcam on the rim of Halema'uma'u, shows the north rim of the vent collapsing.
This video, compiled from the Webcam on the rim of Halema'uma'u, shows the north rim of the vent collapsing.
Halema'uma'u West Rim Collapse
This clip, captured by a video camera on the rim of Halema'uma'u to the southwest of the vent, shows a small slice of the western rim of the vent collapsing into the lava lake.
This clip, captured by a video camera on the rim of Halema'uma'u to the southwest of the vent, shows a small slice of the western rim of the vent collapsing into the lava lake.
Thunder Sounds from the Vent in Halema'uma'u
Booming sounds from the vent in Halema'uma'u have been audible around the summit area of Kilauea for the past several days. Some of these sounds are caused by rocks striking the surface of the lava lake, but most are actually the sound of the vent walls cracking due to heating and expansion of rock.
Booming sounds from the vent in Halema'uma'u have been audible around the summit area of Kilauea for the past several days. Some of these sounds are caused by rocks striking the surface of the lava lake, but most are actually the sound of the vent walls cracking due to heating and expansion of rock.
Rockfall in Halema'uma'u
The level of the lava lake sometimes changes abruptly. These cycles of rise and fall, which amount to a vertical change of around 15 m (about 50 ft), are occasionally triggered by rockfalls. Here, a small collapse from the vent wall triggers degassing and a drop in the lava level.
The level of the lava lake sometimes changes abruptly. These cycles of rise and fall, which amount to a vertical change of around 15 m (about 50 ft), are occasionally triggered by rockfalls. Here, a small collapse from the vent wall triggers degassing and a drop in the lava level.