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View of the active west vent from the south rim of the Halemaʻumaʻu crater on January 29, 2021. The west vent is almost completely crusted over and the effusion is slow from the base of the spatter cone. This photograph was taken from an area of Hawai‘i Volcanoes National Park that remains closed to the public for safety reasons.
View of the active west vent from the south rim of the Halemaʻumaʻu crater on January 29, 2021. The west vent is almost completely crusted over and the effusion is slow from the base of the spatter cone. This photograph was taken from an area of Hawai‘i Volcanoes National Park that remains closed to the public for safety reasons.
Photo of helicopter with geophysical equipment loop deployed below it via slingload. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.
Photo of helicopter with geophysical equipment loop deployed below it via slingload. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.
Photo of helicopter with geophysical equipment loop deployed below it via slingload. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.
Photo of helicopter with geophysical equipment loop deployed below it via slingload. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.
The surface temperature of the land changes rapidly across the world throughout the course of one year. This video shows the changing temperatures throughout 2020 using 8-day land surface temperature (LST) data from the Terra MODIS satellite sensor.
The surface temperature of the land changes rapidly across the world throughout the course of one year. This video shows the changing temperatures throughout 2020 using 8-day land surface temperature (LST) data from the Terra MODIS satellite sensor.
HVO scientists observed the Halema‘uma‘u lava lake from the southern crater rim in the late afternoon on Tuesday. In this view, the active western fissure at Kīlauea's summit is visible to the left. The circulating western portion (left) of the lava lake has a more silvery color than the stagnant eastern portion (right).
HVO scientists observed the Halema‘uma‘u lava lake from the southern crater rim in the late afternoon on Tuesday. In this view, the active western fissure at Kīlauea's summit is visible to the left. The circulating western portion (left) of the lava lake has a more silvery color than the stagnant eastern portion (right).
This close-up view of the active western fissure in Halema‘uma‘u at Kīlauea's summit was captured through the lens of a laser ranging device used by HVO scientists to measure distances to features within the crater.
This close-up view of the active western fissure in Halema‘uma‘u at Kīlauea's summit was captured through the lens of a laser ranging device used by HVO scientists to measure distances to features within the crater.
Because Mauna Loa has been quiet for almost 30 years, residents may not be aware that Mauna Loa is an active volcano. When Mauna Loa erupts, it is capable of disrupting lives and commerce throughout the Island of Hawai‘i. What can we learn from Mauna Loa’s past eruptions?
Because Mauna Loa has been quiet for almost 30 years, residents may not be aware that Mauna Loa is an active volcano. When Mauna Loa erupts, it is capable of disrupting lives and commerce throughout the Island of Hawai‘i. What can we learn from Mauna Loa’s past eruptions?
Example of some of the new layers available in the Geology of Yellowstone Map as of early 2021. Shown here are the locations of various monitoring instruments and water sample sites overlain on a thermal infrared satellite image. Lighter colors on the infrared image show more radiant (warmer) areas, whereas dark areas are less radiant (cooler).
Example of some of the new layers available in the Geology of Yellowstone Map as of early 2021. Shown here are the locations of various monitoring instruments and water sample sites overlain on a thermal infrared satellite image. Lighter colors on the infrared image show more radiant (warmer) areas, whereas dark areas are less radiant (cooler).
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
The extensive rangelands across the Western United States are threatened by invasive grasses, climate change, and altered fire regimes that can disturb the landscape. The largely semi-arid lands are also important for the survival of species that need undisturbed sagebrush ecosystems to thrive.
This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl).
This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl).
Seismic stations (white triangles) around Yellowstone Lake as seen on the online Geology of Yellowstone Map. Inset shows a seismogram for station YLA that can be accessed by clicking on the feature and following the “Seismogram” link in the popup box.
Seismic stations (white triangles) around Yellowstone Lake as seen on the online Geology of Yellowstone Map. Inset shows a seismogram for station YLA that can be accessed by clicking on the feature and following the “Seismogram” link in the popup box.
Cycles in Kīlauea's summit eruptive vigor were present on January 22 and 23, with the lava channel at Halema‘uma‘u's western fissure alternating between high and low flow rates over periods of 5-6 minutes. USGS photos by M. Patrick.
Cycles in Kīlauea's summit eruptive vigor were present on January 22 and 23, with the lava channel at Halema‘uma‘u's western fissure alternating between high and low flow rates over periods of 5-6 minutes. USGS photos by M. Patrick.
Active lava reached as far as the central lake in Halema‘uma‘u at Kīlauea's summit, on the east side of the main island, where crustal foundering was occasionally happening. USGS photo by M. Patrick.
Active lava reached as far as the central lake in Halema‘uma‘u at Kīlauea's summit, on the east side of the main island, where crustal foundering was occasionally happening. USGS photo by M. Patrick.
Active lava was again limited to the western half of the lava lake in Halema‘uma‘u at Kīlauea Volcano's summit. The western vent remained active with cycles of eruptive vigor in the open channel lasting 5-6 minutes. USGS photo by M. Patrick.
Active lava was again limited to the western half of the lava lake in Halema‘uma‘u at Kīlauea Volcano's summit. The western vent remained active with cycles of eruptive vigor in the open channel lasting 5-6 minutes. USGS photo by M. Patrick.
Activity at the west vent within Halemaʻumaʻu crater on January 22 included frequent spattering from multiple locations and an open lava channel which drops 20 meters (65 feet) from its source to the lava lake surface.
Activity at the west vent within Halemaʻumaʻu crater on January 22 included frequent spattering from multiple locations and an open lava channel which drops 20 meters (65 feet) from its source to the lava lake surface.
Cyclic fluctuations in eruptive vigor were present recently at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The cycles occurred on January 22 and 23, with cycles lasting 5-6 minutes. Peaks in the cycles were expressed as high flow rates in the channel and spattering at the vents. During troughs in the cycles, the channel became nearly inactive.
Cyclic fluctuations in eruptive vigor were present recently at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The cycles occurred on January 22 and 23, with cycles lasting 5-6 minutes. Peaks in the cycles were expressed as high flow rates in the channel and spattering at the vents. During troughs in the cycles, the channel became nearly inactive.
Clamp-on ultrasonic flow meter measuring total flow on a pipe at a private well monitoring site.
Clamp-on ultrasonic flow meter measuring total flow on a pipe at a private well monitoring site.
Gearing up for Landing Day - An Interview with USGS Scientist and Mars Rover Team Member, Dr. Ryan Anderson
Gearing up for Landing Day - An Interview with USGS Scientist and Mars Rover Team Member, Dr. Ryan Anderson
Flames have been observed numerous times at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The combusting gas is not certain, but flames were observed numerous times in Halema‘uma‘u during the early 1900s lava lake.
Flames have been observed numerous times at the western fissure in Halema‘uma‘u, at the summit of Kīlauea. The combusting gas is not certain, but flames were observed numerous times in Halema‘uma‘u during the early 1900s lava lake.
Microscopic appearance of normal and melanistic skin in fish from Chesapeake Bay watershed.
Microscopic appearance of normal and melanistic skin in fish from Chesapeake Bay watershed.
Between overcast and rainy weather, HVO field crews took this photo at 3:34 p.m. HST on January 21, 2021, from the south side of Kīlauea's summit caldera. The photo shows Halema‘uma‘u's active west vent, which overflowed its tubed-over lower half at 2:51 p.m.
Between overcast and rainy weather, HVO field crews took this photo at 3:34 p.m. HST on January 21, 2021, from the south side of Kīlauea's summit caldera. The photo shows Halema‘uma‘u's active west vent, which overflowed its tubed-over lower half at 2:51 p.m.
