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Photograph of scientists surveying caldera
September 23, 2020

Kīlauea summit gravity survey - September 23, 2020

On September 23, 2020, Hawaiian Volcano Observatory geophysicists and a geologist conducted a gravity survey of Kīlauea summit, as part of HVO's regular monitoring program. In this photo, scientists are carrying survey equipment westward along the remnants of the Halema‘uma‘u Trail on the down-dropped block of Kīlauea caldera. The fissure from the 1954 eruption can be seen

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Photograph of scientists surveying caldera
September 23, 2020

Kīlauea summit gravity survey - September 23, 2020

During a gravity survey, HVO scientists measure the relative strength of gravity (gravimeter, bottom left corner of photo) between benchmarks. High-precision vertical positions from kinematic Global Positioning System (GPS, tripod and antenna middle of photo) help correct the gravity measurement for the effects of elevation changes. The south sulfur banks, exposed during

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Photograph of gravimeter in caldera
September 23, 2020

Kīlauea summit gravity survey - September 23, 2020

A gravimeter makes a measurement at a benchmark situated among lava flows erupted in 1919. The strength of gravity varies with both elevation and the amount of mass beneath the instrument. Changes in mass can indicate changes in the amount of magma entering Kīlauea's magma reservoirs. USGS photo by A. Flinders.

Photograph of scientist surveying gravity in caldera
September 23, 2020

Kīlauea summit gravity survey - September 23, 2020

An HVO geophysicist takes a gravity measurement at a benchmark near a continuous gravimeter (inside hutch). The continuous gravimeter takes gravity measurements once per second and relays the data via radio back to HVO. During the gravity survey on September 23, 2020, HVO scientists took measurements at multiple locations on the floor of Kīlauea caldera. By comparing the

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September 18, 2020

Kīlauea Volcano summit water lake color zones on September 18, 2020

The color zones on the lake surface shift from minute to minute. This video shows how the color zones were creating a large swirl in the lake center. USGS video by M. Patrick.

Color photograph of volcanic lake
September 18, 2020

Color variations at Kīlauea's summit water lake - 09/18/2020

Color variations are common at Kīlauea's summit water lake, and are usually dominated by tan and brown hues. Today, the interaction between different color zones produced a large swirl in the center of the lake.

Color map of camera network coverage
September 17, 2020

Map of the USGS Hawaiian Volcano Observatory’s current camera network

Map of the USGS Hawaiian Volcano Observatory’s current camera network coverage.   Lava-flow hazard zone 1 is outlined in yellow.   Color-shaded areas are visible to at least one camera in the current network.  We would like to expand the network so that it covers the grey-shaded areas in zone 1 as well.  If your property has a good view of unshaded areas in zone 1, and you

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Last 24 Hours - Live Panorama of Mokuʻāweoweo Caldera Thermal [MTcam]
September 9, 2020

Last 24 Hours - Live Panorama of Mokuʻāweoweo Caldera Thermal [MTcam]

Last 24 Hours - Live Panorama of Mokuʻāweoweo Caldera Thermal from the Northwest Rim [MTcam]

This image is from a temporary thermal camera located on the north rim of Mauna Loa's summit caldera. The temperature scale is in degrees Celsius up to a maximum of 500 degrees (932 degrees Fahrenheit) for this camera model, and scales automatically based on the maximum and

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Last 24 Hours - Live thermal image of Halemaʻumaʻu and the water lakefrom the west rim of the new summit collapse features
September 9, 2020

Last 24 Hours - [F1cam]

Last 24 Hours - Live thermal image of Halemaʻumaʻu and the water lakefrom the west rim of the new summit collapse features [F1cam]

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At

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Last 24 Hours - Live Panorama of Kīlauea Caldera from HVO Observation
September 9, 2020

Last 24 Hours - Live Panorama of Kīlauea Caldera from HVO [KIcam]

Last 24 Hours - Live Panorama of Kīlauea Caldera from HVO Observation.

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At times, clouds and rain obscure visibility. The cameras are

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Live image of Halemaʻumaʻu from the west rim of Kīlauea [K3cam]
September 9, 2020

Last 24 Hours - Live image of Halemaʻumaʻu from the west rim [K3cam]

Last 24 Hours - Live image of Halemaʻumaʻu from the west rim of Kīlauea Caldera [K3cam].

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At times, clouds and rain obscure visibility.

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 Last 24 Hours - Live Panorama of Halemaʻumaʻu, water lake [KWcam]
September 9, 2020

Last 24 Hours - Live Panorama of Halemaʻumaʻu, water lake [KWcam]

Last 24 Hours - Live Panorama of Halemaʻumaʻu, water lake, and down-dropped caldera floor from the west rim of the new summit collapse features [KWcam].

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views

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