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Volcano Hazard Program images.
Retired USGS botanist Linda Pratt, USGS research geologists Patricia Nadeau and Jennifer Lewicki, and USGS chemist Tamar Elias (left to right) are part of a team investigating a critically endangered succulent plant, Portulaca sclerocarpa, in Hawai‘i Volcanoes National Park's Puhimau thermal area.
Retired USGS botanist Linda Pratt, USGS research geologists Patricia Nadeau and Jennifer Lewicki, and USGS chemist Tamar Elias (left to right) are part of a team investigating a critically endangered succulent plant, Portulaca sclerocarpa, in Hawai‘i Volcanoes National Park's Puhimau thermal area.
The 1880-1881 eruption of Mauna Loa produced lava flows that came within about 2 kilometers of the town of Hilo. This painting by Charles Furneaux, "Night View 1880-1881, Eruption from Hilo Bay," illustrates the flows as they would have been in November 1880.
The 1880-1881 eruption of Mauna Loa produced lava flows that came within about 2 kilometers of the town of Hilo. This painting by Charles Furneaux, "Night View 1880-1881, Eruption from Hilo Bay," illustrates the flows as they would have been in November 1880.
As fissure 8 erupts on Kīlauea Volcano's lower East Rift Zone in June 2018 (left), a Fourier Transform Infrared (FTIR) spectrometer measures gas emissions from the lava fountains. At right, Hawaiian Volcano Observatory gas geochemistry team members collect a sample of gas from Sulphur Banks in Hawai‘i Volcanoes National Park.
As fissure 8 erupts on Kīlauea Volcano's lower East Rift Zone in June 2018 (left), a Fourier Transform Infrared (FTIR) spectrometer measures gas emissions from the lava fountains. At right, Hawaiian Volcano Observatory gas geochemistry team members collect a sample of gas from Sulphur Banks in Hawai‘i Volcanoes National Park.
A close-up view of the Kilauea pond shows the color variations across the surface, and sharp boundaries among zones of different color.
A close-up view of the Kilauea pond shows the color variations across the surface, and sharp boundaries among zones of different color.
After a sample was collected, HVO team members transferred water from the sampling device to plastic bottles. Team members took notes, measured water pH and evaluated water temperature data for each sample collected.
After a sample was collected, HVO team members transferred water from the sampling device to plastic bottles. Team members took notes, measured water pH and evaluated water temperature data for each sample collected.
Thomas A. Jaggar, shown at his desk circa 1925, founded the Hawaiian Volcano Observatory in 1912 and served as its Director until he retired in 1940.
Thomas A. Jaggar, shown at his desk circa 1925, founded the Hawaiian Volcano Observatory in 1912 and served as its Director until he retired in 1940.
Comparison of the water pond in Halema‘uma‘u on November 20, 2019, and March 1, 2020. Camera and lens same for both photos. Since November 20, 2019, the pond deepened 10 m (33 ft) and widened more than 50 m (164 ft) east-west and 30 m (98 ft) north-south. Circled clusters of rocks did not move between photos, evidence of slope stability.
Comparison of the water pond in Halema‘uma‘u on November 20, 2019, and March 1, 2020. Camera and lens same for both photos. Since November 20, 2019, the pond deepened 10 m (33 ft) and widened more than 50 m (164 ft) east-west and 30 m (98 ft) north-south. Circled clusters of rocks did not move between photos, evidence of slope stability.
An HVO scientist tests a colorimeter instrument on the water lake within Halema‘uma‘u, at Kīlauea's summit. Colorimetry is the measurement of the wavelength and intensity of light. USGS photo by M. Patrick.
An HVO scientist tests a colorimeter instrument on the water lake within Halema‘uma‘u, at Kīlauea's summit. Colorimetry is the measurement of the wavelength and intensity of light. USGS photo by M. Patrick.
A pack string crossing the Yellowstone River in the remote Thorofare region. National Park Service photo courtesy of Sherrie and Ron White, August 21, 2016.
A pack string crossing the Yellowstone River in the remote Thorofare region. National Park Service photo courtesy of Sherrie and Ron White, August 21, 2016.
Imperial Geyser hot spring pool in Yellowstone National Park is about 30 m (about 100 ft) across and contains alkaline-Cl waters with a steam vent in the pool and mudpots outside the pool area (in the upper right part of this photo). USGS Photo by Pat Shanks, 2019.
Imperial Geyser hot spring pool in Yellowstone National Park is about 30 m (about 100 ft) across and contains alkaline-Cl waters with a steam vent in the pool and mudpots outside the pool area (in the upper right part of this photo). USGS Photo by Pat Shanks, 2019.
Visitors in the busy Old Faithful area. National Park Service photo by Neal Herbert, May 27, 2017.
Visitors in the busy Old Faithful area. National Park Service photo by Neal Herbert, May 27, 2017.
Map of roads in the Greater Yellowstone Ecosystem. Source: Yellowstone Spatial Analysis Center.
Map of roads in the Greater Yellowstone Ecosystem. Source: Yellowstone Spatial Analysis Center.
A typical section of shoreline in the Kapoho area, formed by thick toothpaste lava that originated from Fissure 8 during the 2018 eruption. USGS photo by M. Zoeller.
A typical section of shoreline in the Kapoho area, formed by thick toothpaste lava that originated from Fissure 8 during the 2018 eruption. USGS photo by M. Zoeller.
Field observations today show that the diameters of the crater lake within Halema‘uma‘u at the summit of Kīlauea are about 94 m (308 ft) north-south and around 192-195 m (630-640 ft) east-west. Too much steam at the west end interfered with measurements this morning.
Field observations today show that the diameters of the crater lake within Halema‘uma‘u at the summit of Kīlauea are about 94 m (308 ft) north-south and around 192-195 m (630-640 ft) east-west. Too much steam at the west end interfered with measurements this morning.
On January 17, 2020, USGS-HVO scientists and DOI Unoccupied Aerial System (UAS) team members collected three additional samples of water from the Halema‘uma‘u crater lake. Here, the sampling device and temperature logger were readied for takeoff. The plastic sleeve was attached to the UAS (drone) with a cord about 20 feet (6 m) long.
On January 17, 2020, USGS-HVO scientists and DOI Unoccupied Aerial System (UAS) team members collected three additional samples of water from the Halema‘uma‘u crater lake. Here, the sampling device and temperature logger were readied for takeoff. The plastic sleeve was attached to the UAS (drone) with a cord about 20 feet (6 m) long.
Schematic diagram of the magmatic system underneath Yellowstone caldera and the processes leading to a "shadow zone".
Schematic diagram of the magmatic system underneath Yellowstone caldera and the processes leading to a "shadow zone".
GeoGirls Geology and Technology Field Camp 2020
GeoGirls Geology and Technology Field Camp 2020
Cascades Volcano Observatory Open House May 9, 2020
Cascades Volcano Observatory Open House May 9, 2020
Map of seismicity (yellow circles) in the Yellowstone region during 2019. Gray lines are roads, red line shows the caldera boundary, Yellowstone National Park is outlined by black dashed line, and gray dashed lines denote state boundaries.
Map of seismicity (yellow circles) in the Yellowstone region during 2019. Gray lines are roads, red line shows the caldera boundary, Yellowstone National Park is outlined by black dashed line, and gray dashed lines denote state boundaries.
ANIMATED GIF: The KWcam webcam has been imaging the Kīlauea summit water lake for just over a year now, tracking visual changes in the lake including water level and color.
ANIMATED GIF: The KWcam webcam has been imaging the Kīlauea summit water lake for just over a year now, tracking visual changes in the lake including water level and color.
A sample of the digital elevation model from the 2019 LiDAR survey of Kīlauea, showing the vicinity of the former HVO office and Jaggar Museum in Hawaiʻi Volcanoes National Park.
A sample of the digital elevation model from the 2019 LiDAR survey of Kīlauea, showing the vicinity of the former HVO office and Jaggar Museum in Hawaiʻi Volcanoes National Park.