Hawaiian Volcano Observatory

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August 9, 2019

Close-Up of Ponded Water at Halema`uma`u

This video shows a close-up of the ponded water at the bottom of Halema'uma'u. Yesterday, the separate ponds joined into a single elongate pond. The water level has continued to slowly rise.

What does water in Halema‘uma‘u mean
August 8, 2019

What does water in Halema‘uma‘u mean

These images look east at the pond within Halema‘uma‘u on August 8 and 14, 2019. The pond widened mainly toward the south (right). The north-south width of the pond on August 14 was about 32 m (105 ft), about 10 m (35 ft) wider than on August 8. The pond has widened and deepened slowly and steadily rate since measurements began on August 3.

HVO now tracking ponds of water, not lava, at Kīlauea's summit
August 7, 2019

HVO now tracking ponds of water, not lava, at Kīlauea's summit

A telephoto view of the ponded water at the bottom of Halema‘uma‘u on August 7, 2019. For scale, the largest pond is about 15 meters (50 feet) in diameter.

August 4, 2019

August 4 field observations of Halema‘uma‘u

This video shows steaming from the main pond of water at the bottom of Halema‘uma‘u as captured on Sunday, August 4. Two smaller areas of ponded water were present a short distance east of this spot. Thermal images indicate that the water surface is roughly 70 degrees Celsius (158 degrees Fahrenheit). USGS video by M. Patrick, 08-04-2019.

Aerial view of Halema‘uma‘u at the summit of Kīlauea
August 1, 2019

Aerial view of Halema‘uma‘u at the summit of Kīlauea

Aerial view of Halema‘uma‘u at the summit of Kīlauea taken during a USGS Hawaiian Volcano Observatory helicopter overflight on August 1, 2019. The small green patch visible at the bottom of Halema‘uma‘u is a new pond forming at the lowest point of the crater. The pond is at about 525 m (about 1722 ft) elevation.

Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019
July 25, 2019

Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019

Telephoto views of water in the bottom of Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019 (left), when the pond was first observed, and a USGS overflight on August 1, 2019 (right). The pond grew slightly in size and depth between the two dates; an "X" marks the same rock in both photos for comparison. Left photo courtesy of Ron Chapelle, Quantum

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residual heat, steam, and small amounts of other gases continue to escape
July 18, 2019

residual heat, steam, and small amounts of other gases continue to esc

Although Kīlauea Volcano's 2018 lower East Rift Zone eruption is over, residual heat, steam, and small amounts of other gases continue to escape from ground cracks and vents in the lower Puna area near Highway 130 as molten rock underground cools.

July 10, 2019

Routine overflight of Mauna Loa summit

This video shows Moku‘āweoweo, the caldera at the summit of Mauna Loa, during a routine overflight. The flight path goes from northeast to southwest, and begins at North Pit crater before crossing over the main caldera floor. In the southwest portion of the caldera floor, the 1940 and 1949 cones can be seen. The video ends as the helicopter flies over South Pit, at the

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Interferogram for the period from April 6 to June 2, 2019
June 2, 2019

Interferogram for the period from April 6 to June 2, 2019

COSMO-SkyMed (CSK) Interferogram for the period from April 6 to June 2, 2019, covering Kīlauea Volcano’s summit region. Each color fringe represents 1.65 centimeters (0.65 inches) of ground displacement. The closely spaced color bands, or fringes, within the caldera indicate localized inflation, while the broader fringes on the northwest side of the caldera indicate a

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Kīlauea that will be covered by a helicopter lidar survey in June 2019
May 28, 2019

Kīlauea that will be covered by a helicopter lidar survey in June 2019

Areas on Kīlauea that will be covered by a helicopter lidar survey in June 2019. Red lines enclose areas over which the survey helicopter will fly at 396 m (1,300 ft) above ground level. Green lines enclose areas over which the helicopter will fly at 151 m (500 ft) above ground level.

bright yellow Hughes 500 helicopter
May 20, 2019

bright yellow Hughes 500 helicopter

During the lidar survey, equipment will be mounted on a bright yellow Hughes 500 helicopter like the one shown here. The helicopter will fly in a northeast or southwest direction over the survey areas depicted on the map.

field crews of Hawaiian Volcano Observatory
May 1, 2019

field crews of Hawaiian Volcano Observatory

Kīlauea Volcano’s 2018 lower East Rift Zone eruption was monitored around the clock by field crews of Hawaiian Volcano Observatory and other USGS scientists for three months, starting with the first fissure that erupted in Leilani Estates on May 3, 2018. Clockwise from upper left, USGS-HVO scientists walked along Leilani Avenue on May 6 to examine spatter erupted from

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