Hawaiian Volcano Observatory

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Electronic Tilt at Mauna Loa Summit - Past Week
December 31, 2019

Electronic Tilt at Mauna Loa Summit - Past Week

Electronic Tilt at Mauna Loa Summit - Past Week. Tilt data from a site near the northwest rim of Mauna Loa's summit caldera. The tiltmeter responds to daily and seasonal temperature fluctuations as well as possible changes in Mauna Loa's magma storage system.

Sulfur dioxide concentration - Kīlauea Summit - Past Month
December 31, 2019

Sulfur dioxide concentration - Kīlauea Summit - Past Month

Sulfur dioxide concentration in ambient air - Kīlauea Summit - Past Month. HRSDH raw data SO2.

Earthquake Hypocenters Map - Past Month Mauna Loa
December 31, 2019

Earthquake Hypocenters Map - Past Month Mauna Loa

Earthquake Hypocenters Map - Past Month Mauna Loa.  Map showing locations of earthquakes during the past month. 

Sulfur dioxide concentration - Kīlauea Summit - Past Month
December 31, 2019

Sulfur dioxide concentration - Kīlauea Summit - Past Month

Sulfur dioxide concentration in ambient air - Kīlauea Summit - Past Month. HRPKE raw data SO2.

Earthquake Hypocenters Cross Section - Past Month Mauna Loa
December 31, 2019

Earthquake Hypocenters Cross Section - Past Month Mauna Loa

Earthquake Hypocenters Cross Section - Past Month Mauna Loa. Depth of earthquakes (circles) during the past month. Circle-size represents magnitude, and color indicates depth.

Earthquake Hypocenters Map - Past Year - Kīlauea
December 31, 2019

Earthquake Hypocenters Map - Past Year - Kīlauea

Map showing locations of earthquakes during the past year. 

Earthquake Rates - Past Month Mauna Loa
December 31, 2019

Earthquake Rates - Past Month Mauna Loa

Earthquake Rates - Past Month Mauna Loa. Number of earthquakes per day during the past month (blue bars). The red line is the cumulative moment (energy) release. 

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

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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.
 

view looking north across Mauna Loa's summit caldera
September 8, 2019

early morning view looking north across Moku‘āweoweo

An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim. Frost covered much of the caldera floor that was still shadowed, and weak steaming issued from the usual areas. Overall, there were no significant changes observed at the summit. The 1940 and 1949 cones are visible in

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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.