An HVO geologist surveys the lava lake from the eastern rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The cliff that covers most of the top half of the photo formed during the collapse events of 2018, and gives a sense of the scale of that event. USGS photo by M. Patrick on April 16, 2021.
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Halema‘uma‘u, Kīlauea summit—April 16, 2021
An HVO geologist surveys the lava lake from the eastern rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The cliff that covers most of the top half of the photo formed during the collapse events of 2018, and gives a sense of the scale of that event. USGS photo by M. Patrick on April 16, 2021.
Kīlauea Lava Lake (April 16, 2021)
Hawaiian Volcano Observatory geologists visited the east rim of Halema‘uma‘u Crater to make observations of Kīlauea's summit lava lake and survey the eastern portion of the crater. This video compilation shows different aspects of the lake activity in the western portion of the crater.
Hawaiian Volcano Observatory geologists visited the east rim of Halema‘uma‘u Crater to make observations of Kīlauea's summit lava lake and survey the eastern portion of the crater. This video compilation shows different aspects of the lake activity in the western portion of the crater.
Kīlauea Summit Overflight (April 16, 2021)
Hawaiian Volcano Observatory geologists conducted a routine helicopter overflight of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. Active surface lava remains limited to a small area in the western portion of the lake, with the eastern portion solidified at the surface.
Hawaiian Volcano Observatory geologists conducted a routine helicopter overflight of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. Active surface lava remains limited to a small area in the western portion of the lake, with the eastern portion solidified at the surface.
Halema‘uma‘u eruptive activity — April 14, 2021
A close-up view of the western fissure within Halema‘uma‘u at the summit of Kīlauea Volcano, Island of Hawai‘i. Lava continues to enter the lava lake from a wide inlet near the base of the western vent (fuming at center right). Crustal foundering is common on the active lava lake surface (center bottom), located on the western side of the crater.
A close-up view of the western fissure within Halema‘uma‘u at the summit of Kīlauea Volcano, Island of Hawai‘i. Lava continues to enter the lava lake from a wide inlet near the base of the western vent (fuming at center right). Crustal foundering is common on the active lava lake surface (center bottom), located on the western side of the crater.
Mousam River at West Kennebunk, Maine
Hydrologic Technician Andy Cloutier visited USGS gaging station 01069500 on the Mousam River at West Kennebunk, Maine in mid-April of 2021.
Hydrologic Technician Andy Cloutier visited USGS gaging station 01069500 on the Mousam River at West Kennebunk, Maine in mid-April of 2021.
Sunset at Colvin Creek - Reston, Virginia
A photograph of Colvin Creek during a cool Fall reddish sunset in Reston, Virginia
A photograph of Colvin Creek during a cool Fall reddish sunset in Reston, Virginia
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021This view from the south rim of Halema‘uma‘u shows the perched lava lake, supplied by lava from the western fissure (upper right portion of photo). The levee surrounding the active lava lake is up to about 5 m (16 ft) high. USGS photo by M. Patrick on April 13, 2021.
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021This view from the south rim of Halema‘uma‘u shows the perched lava lake, supplied by lava from the western fissure (upper right portion of photo). The levee surrounding the active lava lake is up to about 5 m (16 ft) high. USGS photo by M. Patrick on April 13, 2021.
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021A close up view of the inlet at the western margin of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. The lava stream was covered in a thin, flexible crust and was moving at a very slow velocity. USGS photo taken by M. Patrick on April 13, 2021.
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021
Halema‘uma‘u lava lake, Kīlauea summit eruption—April 13, 2021A close up view of the inlet at the western margin of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. The lava stream was covered in a thin, flexible crust and was moving at a very slow velocity. USGS photo taken by M. Patrick on April 13, 2021.
Kīlauea Volcano — Halema‘uma‘u gas plume (April 13, 2021)
Kīlauea Volcano — Halema‘uma‘u gas plume (April 13, 2021)KPcam webcam on the flank of Mauna Loa looks south towards the summit of Kīlauea to monitor the gas plume from the active lava lake. This time-lapse video shows a typical day for the summit plume. Clear views in the night and morning show the low, ground-hugging plume carried to the southwest by the tradewinds.
Kīlauea Volcano — Halema‘uma‘u gas plume (April 13, 2021)
Kīlauea Volcano — Halema‘uma‘u gas plume (April 13, 2021)KPcam webcam on the flank of Mauna Loa looks south towards the summit of Kīlauea to monitor the gas plume from the active lava lake. This time-lapse video shows a typical day for the summit plume. Clear views in the night and morning show the low, ground-hugging plume carried to the southwest by the tradewinds.
Kīlauea Volcano — Halema‘uma‘u Lava Lake Inlet (April 13, 2021)
Kīlauea Volcano — Halema‘uma‘u Lava Lake Inlet (April 13, 2021)This video shows the inlet along the western margin of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. The lava stream was moving slowly but steadily, and was emerging beneath a portion of crust attached to the lake margin. The video is shown at 10x speed.
Kīlauea Volcano — Halema‘uma‘u Lava Lake Inlet (April 13, 2021)
Kīlauea Volcano — Halema‘uma‘u Lava Lake Inlet (April 13, 2021)This video shows the inlet along the western margin of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. The lava stream was moving slowly but steadily, and was emerging beneath a portion of crust attached to the lake margin. The video is shown at 10x speed.
Scientist installing a nest box near Ashumet Pond, Cape Cod, Mass.
Scientist installing a nest box near Ashumet Pond, Cape Cod, Mass.Scientist istalling a swallow nest box near Ashumet Pond, Cape Cod Massachusetts as part of a study on the fate and effects of PFAS chemicals.
Scientist installing a nest box near Ashumet Pond, Cape Cod, Mass.
Scientist installing a nest box near Ashumet Pond, Cape Cod, Mass.Scientist istalling a swallow nest box near Ashumet Pond, Cape Cod Massachusetts as part of a study on the fate and effects of PFAS chemicals.
Terra MODIS & S-NPP VIIRS Observe Snowpack in Sierra Nevada Mt. Range
Terra MODIS & S-NPP VIIRS Observe Snowpack in Sierra Nevada Mt. RangeThe Moderate Resolution Imaging Spectroradiometer (MODIS) sensor is located aboard NASA’s Terra and Aqua satellites. The Visible Infrared Imaging Radiometer Suite (VIIRS) sensor is aboard the Suomi National Polar-orbiting Partnership (S-NPP) satellite.
Terra MODIS & S-NPP VIIRS Observe Snowpack in Sierra Nevada Mt. Range
Terra MODIS & S-NPP VIIRS Observe Snowpack in Sierra Nevada Mt. RangeThe Moderate Resolution Imaging Spectroradiometer (MODIS) sensor is located aboard NASA’s Terra and Aqua satellites. The Visible Infrared Imaging Radiometer Suite (VIIRS) sensor is aboard the Suomi National Polar-orbiting Partnership (S-NPP) satellite.
Halema‘uma‘u eruptive activity on April 9, 2021
On Friday, lava erupting from the west vent in Halema‘uma‘u crater emerged from a source closer to the vents base (center), a few feet away from the submerged effusive inlet that has been feeding the lava lake for several weeks (lower right).
On Friday, lava erupting from the west vent in Halema‘uma‘u crater emerged from a source closer to the vents base (center), a few feet away from the submerged effusive inlet that has been feeding the lava lake for several weeks (lower right).
Halema‘uma‘u eruptive activity on April 9, 2021
On Friday afternoon, April 9, lava entered the Halema‘uma‘u lava lake from two sources near the base of the west vent (degassing on left side of the image). This photo was taken around 4:00 p.m. HST from the western rim of Halema‘uma‘u crater, at Kīlauea summit. The lava source closer to the west vent emerged approximately one hour before this photo was taken.
On Friday afternoon, April 9, lava entered the Halema‘uma‘u lava lake from two sources near the base of the west vent (degassing on left side of the image). This photo was taken around 4:00 p.m. HST from the western rim of Halema‘uma‘u crater, at Kīlauea summit. The lava source closer to the west vent emerged approximately one hour before this photo was taken.
Halema‘uma‘u eruptive activity on April 9, 2021
Lava continues to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit. This photo of the vent and active western portion of the lava lake was taken around 3:00 p.m. HST from the south rim of Halema‘uma‘u crater. USGS photo taken by K. Lynn on April 9, 2021.
Lava continues to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit. This photo of the vent and active western portion of the lava lake was taken around 3:00 p.m. HST from the south rim of Halema‘uma‘u crater. USGS photo taken by K. Lynn on April 9, 2021.
Shelton Produced Water Field Sampling
The Region 1, April 2021 "Honorable Mention #2" Winner (by Bonnie McDevitt)
The Region 1, April 2021 "Honorable Mention #2" Winner (by Bonnie McDevitt)
April 8, 2021 — Kīlauea
The crusted-over southern shoreline of the lava lake in Halema‘uma‘u at Kīlauea's summit has accumulated talus (rubble) blocks on the surface since it solidified in February. On April 8, 2021, HVO field geologists noted steaming east of the talus (above the rubble in the photo) that was producing hazy viewing conditions. USGS photo by C. Parcheta.
The crusted-over southern shoreline of the lava lake in Halema‘uma‘u at Kīlauea's summit has accumulated talus (rubble) blocks on the surface since it solidified in February. On April 8, 2021, HVO field geologists noted steaming east of the talus (above the rubble in the photo) that was producing hazy viewing conditions. USGS photo by C. Parcheta.
Image of the Week - Tides in the Bay of Fundy
The Bay of Fundy in Canada has a unique geography funneling the Atlantic Ocean into some of the world's highest tides. At some points the water level can rise and fall over forty feet. The water's edge at Minas Basin shown in these Landsat 8 images changes dramatically depending on the day and time.
The Bay of Fundy in Canada has a unique geography funneling the Atlantic Ocean into some of the world's highest tides. At some points the water level can rise and fall over forty feet. The water's edge at Minas Basin shown in these Landsat 8 images changes dramatically depending on the day and time.
Sartorius Micro Balance, USGS - NMWSC
Sartorius Micro Balance, USGS - NMWSC
Visual Accumulation Drum Recorder, USGS - NMWSC
Visual Accumulation Drum Recorder, USGS - NMWSC
Visual Accumulation Drum Recorder, USGS - NMWSC
Active lava lake within Halema‘uma‘u crater on April 7, 2021
Active lava lake within Halema‘uma‘u crater on April 7, 2021A zoomed in view of the active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit. The active lava lake remains perched a few meters (yards) higher than the surrounding solidified lava crust. A few small rafted islands (darker in color) are visible within the active western lava lake.
Active lava lake within Halema‘uma‘u crater on April 7, 2021
Active lava lake within Halema‘uma‘u crater on April 7, 2021A zoomed in view of the active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit. The active lava lake remains perched a few meters (yards) higher than the surrounding solidified lava crust. A few small rafted islands (darker in color) are visible within the active western lava lake.