Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Images related to natural hazards.
Pu‘u ‘Ō‘ō crater remains partly obscured by thick fume. In particular, the northeastern portion of the crater (bottom left part of image) has recently been entirely obscured to the naked eye, but the thermal camera provides a clear view through the fume, revealing a small lava pond.
Pu‘u ‘Ō‘ō crater remains partly obscured by thick fume. In particular, the northeastern portion of the crater (bottom left part of image) has recently been entirely obscured to the naked eye, but the thermal camera provides a clear view through the fume, revealing a small lava pond.
Surface rupture in soil near the intersection of state Highway 12 and Cuttings Wharf Road in Napa, CA on August 24, 2104
Surface rupture in soil near the intersection of state Highway 12 and Cuttings Wharf Road in Napa, CA on August 24, 2104
Surface rupture across Los Carneros Ave just northwest of South Ave in Napa County, CA. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across Los Carneros Ave just northwest of South Ave in Napa County, CA. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across State Highway 12 at Cuttings Wharf Road - Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Surface rupture across State Highway 12 at Cuttings Wharf Road - Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Damage to a building in downtown Napa, CA caused by the South Napa earthquake. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
Damage to a building in downtown Napa, CA caused by the South Napa earthquake. Photo taken by USGS from California Highway Patrol helicopter on August 24, 2014
USGS volunteer Whitney DeLong and geology intern Alexandra Pickering collecting topographic data with a three-dimensional laser scanner along Cuttings Wharf Road in Napa County, CA on August 26, 2014. In the background are engineers inspecting the earthquake surface rupture where is passes through a horse paddock.
USGS volunteer Whitney DeLong and geology intern Alexandra Pickering collecting topographic data with a three-dimensional laser scanner along Cuttings Wharf Road in Napa County, CA on August 26, 2014. In the background are engineers inspecting the earthquake surface rupture where is passes through a horse paddock.
Timeline of past drilling activities conducted by countries, private sector firms, government agencies, and academe that have helped to refine global gas hydrate estimates and possible future drilling and production testing
Timeline of past drilling activities conducted by countries, private sector firms, government agencies, and academe that have helped to refine global gas hydrate estimates and possible future drilling and production testing
Left-stepping en echelon fractures characteristic of right-lateral fault displacement at the ground surface. Total fault slip measured near this location was 40-46 cm. Photo taken on main rupture strand near Buhman Rd.
Left-stepping en echelon fractures characteristic of right-lateral fault displacement at the ground surface. Total fault slip measured near this location was 40-46 cm. Photo taken on main rupture strand near Buhman Rd.
Right-lateral offset of vineyard row of nearly 40 cm. Photo taken on the main fault rupture near Buhman Rd.
Right-lateral offset of vineyard row of nearly 40 cm. Photo taken on the main fault rupture near Buhman Rd.
Right lateral offset of Browns Valley Rd. centerline, on a secondary fault strand.
Right lateral offset of Browns Valley Rd. centerline, on a secondary fault strand.
Small displacement ground cracks along main rupture near Cuttings Wharf Rd., south of Hwy. 12, taken the day of the earthquake. Displacement in this area grew to ~20 cm right-lateral by Monday, 8/25, due to afterslip.
Small displacement ground cracks along main rupture near Cuttings Wharf Rd., south of Hwy. 12, taken the day of the earthquake. Displacement in this area grew to ~20 cm right-lateral by Monday, 8/25, due to afterslip.
Right-lateral displacement of centerline on Redwood Rd of 2.4 cm along a secondary rupture strand, near the north end of the fault rupture.
Right-lateral displacement of centerline on Redwood Rd of 2.4 cm along a secondary rupture strand, near the north end of the fault rupture.
Driveway buckling across secondary fault strand at Browns Valley Rd.
Driveway buckling across secondary fault strand at Browns Valley Rd.
Damaged unreinforced masonry building on Main St. in Napa Downtown.
Damaged unreinforced masonry building on Main St. in Napa Downtown.
Continuous "mole-track" running parallel to the strike of the fault indicates some E-W compression in addition to right-lateral faulting. Photo taken near Buhman Rd.
Continuous "mole-track" running parallel to the strike of the fault indicates some E-W compression in addition to right-lateral faulting. Photo taken near Buhman Rd.
Pavement buckling and tented sidewalk resulting from ~14 cm of compression on Sandybrook Ln., north end of main rupture.
Pavement buckling and tented sidewalk resulting from ~14 cm of compression on Sandybrook Ln., north end of main rupture.
Map showing the June 27th flow in Kīlauea's East Rift Zone as of August 22, 2014. The area of the flow as mapped on August 12 is shown in pink, while widening and advancement of the flow as of August 22 is shown in red. The heavy brown line marks the extent of steaming along a ground crack into which lava is flowing.
Map showing the June 27th flow in Kīlauea's East Rift Zone as of August 22, 2014. The area of the flow as mapped on August 12 is shown in pink, while widening and advancement of the flow as of August 22 is shown in red. The heavy brown line marks the extent of steaming along a ground crack into which lava is flowing.
Pu‘u ‘Ō‘ō crater remains partly obscured by thick fume. The thermal camera today revealed that several lava ponds persist in their usual locations in the northeast and southeast portions of the crater floor.
Pu‘u ‘Ō‘ō crater remains partly obscured by thick fume. The thermal camera today revealed that several lava ponds persist in their usual locations in the northeast and southeast portions of the crater floor.
Airgun array aboard R/V Marcus G. Langseth
Airgun array aboard R/V Marcus G. Langseth
Lava from June 27 breakout flowing into deep ground crack along Kīlauea's East Rift Zone, Pu‘u ‘Ō‘ō, Hawai‘i.
Lava from June 27 breakout flowing into deep ground crack along Kīlauea's East Rift Zone, Pu‘u ‘Ō‘ō, Hawai‘i.
Preview image for video: shows the southern front of the June 27th lava flow from Pu‘u ‘Ō‘ō. Lava here has flowed into a deep crack on Kīlauea's East Rift Zone. The line of steam extending out from the visible flow margin at the surface is inferred to be caused by lava deep within the crack.
Preview image for video: shows the southern front of the June 27th lava flow from Pu‘u ‘Ō‘ō. Lava here has flowed into a deep crack on Kīlauea's East Rift Zone. The line of steam extending out from the visible flow margin at the surface is inferred to be caused by lava deep within the crack.