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November 22, 2019

Sampling the water in Halema‘uma‘u - Kīlauea Volcano

USGS Hawaiian Volcano Observatory scientists Frank Younger and Patricia Nadeau talk about sampling the water at the bottom of Halemaʻumaʻu, a crater at the summit of Kīlauea Volcano. The water appeared in July 2019 and has steadily risen since then. On October 26, 2019, an unoccupied aerial system (UAS) was used to collect a sample of the water to investigate its source

Five glass beakers on a lab table
October 30, 2019

Water collected from the lake at the bottom of Halema‘uma‘u

Water collected from the lake at the bottom of Halema‘uma‘u is prepared for laboratory analyses at the USGS California Volcano Observatory. Results thus far reveal chemistry indicative of complex reactions among the water, magmatic gases and Kīlauea's basaltic rocks. 

Colo photograph of water in sample vials
October 30, 2019

Water collected from the lake at the bottom of Halema‘uma‘u

Water collected from the lake at the bottom of Halema‘uma‘u is prepared for laboratory analyses at the USGS California Volcano Observatory. Results thus far reveal chemistry indicative of complex reactions between the water, magmatic gases, and Kīlauea's basaltic rocks.

Unoccupied Aircraft System is inspected by pilot just before take off
October 26, 2019

Unoccupied Aircraft System is inspected by pilot just before take off

The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water. 

Color photograph of scientists preparing UAS for flight
October 26, 2019

HVO scientists prepare UAS for Kīlauea summit crater lake sampling

USGS Hawaiian Volcano Observatory and DOI Office of Aviation staff prepare the sampling mechanism (on blue tarp) and inspect the Unmanned Aircraft System (UAS) just before it took off to collect water from the Halema‘uma‘u crater lake. Brightly-colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water. The

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Color photograph of geophysicist operating instrument on tripod
October 3, 2019

Geophysicist Sarah Conway, USGS HVO geophysicist

Geophysicist Sarah Conway, a member of the USGS Hawaiian Volcano Observatory's deformation team, readies a temporary GPS station during a campaign survey of benchmarks on Kīlauea Volcano to monitor changes in the ground surface. 

September 27, 2019

Water appears in Halemaʻumaʻu - Kīlauea Volcano

USGS Hawaiian Volcano Observatory scientists Matt Patrick and Jim Kauahikaua talk about the water that appeared at the bottom of Halemaʻumaʻu, a crater at the summit of Kīlauea Volcano, in July 2019 and continues to rise today. They address why it appeared, how it’s monitored, and its potential hazards.
 

pond of water in Halema‘uma‘ crater
August 18, 2019

Water pond in Halema‘uma‘u 8-18-19

Water pond in Halema‘uma‘u August 18, 2019. The water level continues to slowly rise in Halema‘uma‘u, drowning many of the small rocks that were previously exposed in the center of the pond. Ripples across the water surface were evident today. The color of the water ranged from semi-translucent blue to opaque green-yellow in the western part of the pond.

Volcano crater
August 11, 2019

Aerial view of the Halema‘uma‘u water pond

The ponded water at the bottom of Halema‘uma‘u has continued to slowly rise. This wide view shows much of Halema‘uma‘u and the fumaroles on the upper walls of the pit.

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.