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Explore a wide variety of videos that highlight natural hazards, the risks they pose and the science we conduct to better understand and prepare for them.

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ARkStorm
ARkStorm
ARkStorm

The ARkStorm scenario led by the USGS and hundreds of scientists and experts from many disciplines details impacts of a scientifically plausible storm similar to the Great California Storm of 1862 in the modern day.

The ARkStorm scenario led by the USGS and hundreds of scientists and experts from many disciplines details impacts of a scientifically plausible storm similar to the Great California Storm of 1862 in the modern day.

Seismic Imaging the Central U.S.
Seismic Imaging the Central U.S.
Channelized Lava Flow

A channelized flow that broke out of the lava tube early this morning at the base of the pali, west of Kalapana. Even after traveling through the lava tube system for almost 10 kilometers (about 6.2 miles), the lava is sufficiently hot to be extremely fluid, and moves swiftly downslope. For scale, the channel is about 2 meters (about 2 yards) wide.

A channelized flow that broke out of the lava tube early this morning at the base of the pali, west of Kalapana. Even after traveling through the lava tube system for almost 10 kilometers (about 6.2 miles), the lava is sufficiently hot to be extremely fluid, and moves swiftly downslope. For scale, the channel is about 2 meters (about 2 yards) wide.

video thumbnail: Pu'u 'O 'o Producing Spattering video thumbnail: Pu'u 'O 'o Producing Spattering
Pu'u 'O 'o Producing Spattering
Pu'u 'O 'o Producing Spattering

The flow began erupting in Pu'u 'O 'o crater this morning. The primary vent for the flow was producing small pulsating spattering that had built a small rampart on its south side. The final portion of the video is shown at x10 speed with a wide view, and shows how the spattering vent is supplying the flow.

The flow began erupting in Pu'u 'O 'o crater this morning. The primary vent for the flow was producing small pulsating spattering that had built a small rampart on its south side. The final portion of the video is shown at x10 speed with a wide view, and shows how the spattering vent is supplying the flow.

video thumbnail: Littoral Explosions at Puhi-o-Kalaikini Ocean Entry video thumbnail: Littoral Explosions at Puhi-o-Kalaikini Ocean Entry
Littoral Explosions at Puhi-o-Kalaikini Ocean Entry
Littoral Explosions at Puhi-o-Kalaikini Ocean Entry

A short period of successive littoral explosions at the Puhi-o-Kalaikini ocean entry, where lava exiting the tube enters the water. The explosions were throwing ejecta up to about 20 meters. The video was taken with a high zoom factor from the top of the sea cliff, well away from the entry point and not on the lava delta.

A short period of successive littoral explosions at the Puhi-o-Kalaikini ocean entry, where lava exiting the tube enters the water. The explosions were throwing ejecta up to about 20 meters. The video was taken with a high zoom factor from the top of the sea cliff, well away from the entry point and not on the lava delta.

video thumbnail: Lava Lake at Halema'uma'u Crater video thumbnail: Lava Lake at Halema'uma'u Crater
Lava Lake at Halema'uma'u Crater
Lava Lake at Halema'uma'u Crater

The lava lake deep within the vent cavity at Halema'uma'u crater remains active, with ongoing degassing and circulation of lava. This Quicktime movie shows the view in the vent today with a thermal camera, and the video is set at x4 speed to better show the slowly moving lava surface.

The lava lake deep within the vent cavity at Halema'uma'u crater remains active, with ongoing degassing and circulation of lava. This Quicktime movie shows the view in the vent today with a thermal camera, and the video is set at x4 speed to better show the slowly moving lava surface.

Mount St. Helens: A Catalyst for Change
Mount St. Helens: A Catalyst for Change
Mount St. Helens: A Catalyst for Change

The May 18, 1980 eruption of Mount St. Helens triggered a growth in volcano science and volcano monitoring. Five USGS volcano observatories have been established since the eruption. With new technologies and improved awareness of volcanic hazards USGS scientists are helping save lives and property across the planet.

The May 18, 1980 eruption of Mount St. Helens triggered a growth in volcano science and volcano monitoring. Five USGS volcano observatories have been established since the eruption. With new technologies and improved awareness of volcanic hazards USGS scientists are helping save lives and property across the planet.

video thumbnail: Mount St. Helens: May 18, 1980 video thumbnail: Mount St. Helens: May 18, 1980
Mount St. Helens: May 18, 1980
Mount St. Helens: May 18, 1980

USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David A. Johnston and 56 others in the eruption cast a pall over one of the most dramatic geologic moments in American history.

USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David A. Johnston and 56 others in the eruption cast a pall over one of the most dramatic geologic moments in American history.

San Francisco, California Bay Area Earthquake Hazards and Preparedness

This video presents information on historical and recent earthquake activity in the Bay Area of California. Experts discuss scientific and engineering issues, as well as personal safety and community well-being. The 7 Steps to Safety are neatly outlined, showing families how to be prepared before, during, and after an earthquake.

This video presents information on historical and recent earthquake activity in the Bay Area of California. Experts discuss scientific and engineering issues, as well as personal safety and community well-being. The 7 Steps to Safety are neatly outlined, showing families how to be prepared before, during, and after an earthquake.

San Francisco, California Bay Area Earthquake Hazards and Preparedness

This video presents information on historical and recent earthquake activity in the Bay Area of California. Experts discuss scientific and engineering issues, as well as personal safety and community well-being. The 7 Steps to Safety are neatly outlined, showing families how to be prepared before, during, and after an earthquake.

This video presents information on historical and recent earthquake activity in the Bay Area of California. Experts discuss scientific and engineering issues, as well as personal safety and community well-being. The 7 Steps to Safety are neatly outlined, showing families how to be prepared before, during, and after an earthquake.

Fly Over the Seafloor of San Francisco Bay
Fly Over the Seafloor of San Francisco Bay
Fly Over the Seafloor of San Francisco Bay

Virtual fly-through of San Francisco Bay revealing the seafloor as if the water was drained from the Bay. The movie flies through the south and central Bay, pausing over prominent seafloor features including, large sand waves, rock pinnacles, current scour pits, as well as many human impacts on the seafloor.

Virtual fly-through of San Francisco Bay revealing the seafloor as if the water was drained from the Bay. The movie flies through the south and central Bay, pausing over prominent seafloor features including, large sand waves, rock pinnacles, current scour pits, as well as many human impacts on the seafloor.

Preparedness Now
Preparedness Now
Preparedness Now

This film depicts the realistic outcome of a hypothetical, but plausible, magnitude 7.8 earthquake on the San Andreas fault in Southern CA.

This film depicts the realistic outcome of a hypothetical, but plausible, magnitude 7.8 earthquake on the San Andreas fault in Southern CA.

Groundshaking animation: Hayward Fault, Fremont epicenter
Groundshaking animation: Hayward Fault, Fremont epicenter
Groundshaking animation: Hayward Fault, Fremont epicenter

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in Fremont. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views. &

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in Fremont. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views. &

Groundshaking animation: Hayward Fault, San Pablo Bay epicenter
Groundshaking animation: Hayward Fault, San Pablo Bay epicenter
Groundshaking animation: Hayward Fault, San Pablo Bay epicenter

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in San Pablo Bay. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.&

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in San Pablo Bay. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.&

Groundshaking animation: Hayward Fault, Oakland epicenter
Groundshaking animation: Hayward Fault, Oakland epicenter
Groundshaking animation: Hayward Fault, Oakland epicenter

Scenario shows the ground shaking for a magnitude 7.0 earthquake on the Hayward fault with the epicenter in Oakland, California. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.  

video thumbnail: Using bare-earth LiDAR imagery to reveal the Tahoe - Sierra frontal fault zone Lake Tahoe, California. video thumbnail: Using bare-earth LiDAR imagery to reveal the Tahoe - Sierra frontal fault zone Lake Tahoe, California.
Using bare-earth LiDAR imagery to reveal the Tahoe - Sierra frontal fault zone Lake Tahoe, California.
Using bare-earth LiDAR imagery to reveal the Tahoe - Sierra frontal fault zone Lake Tahoe, California.

This video provides a visual example of how airborne LiDAR (Light D
etection And Ranging) imagery penetrates dense forest cover to reveal
an active fault line not detectable with conventional aerial
photography. The video shows an aerial perspective of the range front
Mt. Tallac fault, which is one of five active faults that traverse

This video provides a visual example of how airborne LiDAR (Light D
etection And Ranging) imagery penetrates dense forest cover to reveal
an active fault line not detectable with conventional aerial
photography. The video shows an aerial perspective of the range front
Mt. Tallac fault, which is one of five active faults that traverse

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