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Images related to natural hazards.
Morning aerial view looking northwest up the valley of Sun Creek. Applegate Peak caps the prominent rock wall of the west side of Sun Notch at the caldera rim. Northwest caldera wall is visible on opposite side of Crater Lake through Sun Notch. Grayback Ridge in foreground is thick lava of pre-Mazama rhyodacite (410-460 ka).
Morning aerial view looking northwest up the valley of Sun Creek. Applegate Peak caps the prominent rock wall of the west side of Sun Notch at the caldera rim. Northwest caldera wall is visible on opposite side of Crater Lake through Sun Notch. Grayback Ridge in foreground is thick lava of pre-Mazama rhyodacite (410-460 ka).
Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64
Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64
Side-by-side comparison of the northwest wall of Kīlauea Caldera on a clear day (left) and a day with thick vog (right). HVO observation tower and building can be seen near the center in each photo.
Side-by-side comparison of the northwest wall of Kīlauea Caldera on a clear day (left) and a day with thick vog (right). HVO observation tower and building can be seen near the center in each photo.
A pressurized, stable, hydrate-bearing sediment core can be fed through the IPTC body, shown here being used in Singapore to support the Indian National Gas Hydrates Program (NGHP1)
A pressurized, stable, hydrate-bearing sediment core can be fed through the IPTC body, shown here being used in Singapore to support the Indian National Gas Hydrates Program (NGHP1)
The USGS Gas Hydrates Project integrates across USGS mission areas, programs, and regions. The stars indicate the locations of personnel involved in the Gas Hydrates Project. Within the US, much of the research focuses on the Gulf of America and Alaska, which represent marine and permafrost-associated settings for gas hydrates, respectively.
The USGS Gas Hydrates Project integrates across USGS mission areas, programs, and regions. The stars indicate the locations of personnel involved in the Gas Hydrates Project. Within the US, much of the research focuses on the Gulf of America and Alaska, which represent marine and permafrost-associated settings for gas hydrates, respectively.
Static stress change models for known or hypothesized faults in the Hispaniola and Puerto Rico subduction segments due to (a) slip on a patch of the Puerto Rico subduction zone, and (b) slip on a patch of the Hispaniola subduction zone. An open arrow denotes slip direction and the patches are marked by dashed rectangles.
Static stress change models for known or hypothesized faults in the Hispaniola and Puerto Rico subduction segments due to (a) slip on a patch of the Puerto Rico subduction zone, and (b) slip on a patch of the Hispaniola subduction zone. An open arrow denotes slip direction and the patches are marked by dashed rectangles.
ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake.
ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake.
USGS staff collecting a sediment core on Ft. Desoto Beach, Florida using vibracoring equipment. This type of sediment coring uses the vibration of an electric motor to sink an aluminum core barrel into the ground. When the core barrel enters the ground the sediment in the ground fills up the barrel and the crew uses the tripod to pull the core out of the ground.
USGS staff collecting a sediment core on Ft. Desoto Beach, Florida using vibracoring equipment. This type of sediment coring uses the vibration of an electric motor to sink an aluminum core barrel into the ground. When the core barrel enters the ground the sediment in the ground fills up the barrel and the crew uses the tripod to pull the core out of the ground.
HVO geologist downloads images collected with infrared cameras set up on the rim of Halema‘uma‘u Crater. The cameras are aimed at an erupting lava lake to conduct a thermal survey of the lake's surface.
HVO geologist downloads images collected with infrared cameras set up on the rim of Halema‘uma‘u Crater. The cameras are aimed at an erupting lava lake to conduct a thermal survey of the lake's surface.
Seismologist installing equipment at station NED on Mount St. Helens, Washington. Mount Rainier in distance.
Seismologist installing equipment at station NED on Mount St. Helens, Washington. Mount Rainier in distance.
The May 12, 2008, Great Sichuan Earthquake, also called the Wenchuan Earthquake, occurred at 14:28 local time, in Sichuan Province, China. The earthquake magnitudes were Mw = 7.9 (USGS), Ms = 8.0 (Chinese Earthquake Administration). The epicenter was 80 km west-northwest of Chengdu, the capital city of Sichuan province.
The May 12, 2008, Great Sichuan Earthquake, also called the Wenchuan Earthquake, occurred at 14:28 local time, in Sichuan Province, China. The earthquake magnitudes were Mw = 7.9 (USGS), Ms = 8.0 (Chinese Earthquake Administration). The epicenter was 80 km west-northwest of Chengdu, the capital city of Sichuan province.
Directly on the San Andreas with high pressure gas lines underground and high voltage power lines overhead at Cajon Pass, CA
Directly on the San Andreas with high pressure gas lines underground and high voltage power lines overhead at Cajon Pass, CA
Directly on the San Andreas with high pressure gas lines underground and high voltage power lines overhead at Cajon Pass, CA
Directly on the San Andreas with high pressure gas lines underground and high voltage power lines overhead at Cajon Pass, CA
Photograph of the active (upslope from the highway that crosses the landslide deposit) and inactive (downslope from the highway) parts of the Slumgullion landslide in Hinsdale County, Colorado.
Photograph of the active (upslope from the highway that crosses the landslide deposit) and inactive (downslope from the highway) parts of the Slumgullion landslide in Hinsdale County, Colorado.
Sulfur flow (darker gray area) on an altered ground surface at Brimstone Basin, Yellowstone Lake in background.
Sulfur flow (darker gray area) on an altered ground surface at Brimstone Basin, Yellowstone Lake in background.
Gas flows up, appearing to boil, through the water of Alluvium Creek, Brimstone Basin, Yellowstone. Large funnel is used to trap gas, which is then sent to a collection bottle through the tubing.
Gas flows up, appearing to boil, through the water of Alluvium Creek, Brimstone Basin, Yellowstone. Large funnel is used to trap gas, which is then sent to a collection bottle through the tubing.
Gas flux measurement being taken over altered ground at Brimstone Basin, Yellowstone.
Gas flux measurement being taken over altered ground at Brimstone Basin, Yellowstone.
Volcanic-gas plumes mark the sites where lava flows from Pu‘u ‘Ō‘ō enter the ocean on Kīlauea's south coast (far left), the Pu‘u ‘Ō‘ō cone (left) on the East Rift Zone, and Halema‘uma‘u Crater at the summit (right). Structures visible in middle left primarily located around the Volcano Golf and Country Club and Kīlauea Military Camp.
Volcanic-gas plumes mark the sites where lava flows from Pu‘u ‘Ō‘ō enter the ocean on Kīlauea's south coast (far left), the Pu‘u ‘Ō‘ō cone (left) on the East Rift Zone, and Halema‘uma‘u Crater at the summit (right). Structures visible in middle left primarily located around the Volcano Golf and Country Club and Kīlauea Military Camp.
Protected Species Observer aboard CCGS Louis S. St-Laurent
Protected Species Observer aboard CCGS Louis S. St-Laurent
Hawaiian Volcano Observatory field geologists track activity at fissure 8 (pictured in the background). Crews collect fissure 8 tephra (Pele's hair, pumice, and other lightweight volcanic glass fragments) for geochemical analyses and characterization of changes in lava fountain behavior.
Hawaiian Volcano Observatory field geologists track activity at fissure 8 (pictured in the background). Crews collect fissure 8 tephra (Pele's hair, pumice, and other lightweight volcanic glass fragments) for geochemical analyses and characterization of changes in lava fountain behavior.