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Halemaumau Summit Lava Lake Level Drops

HVO geologist uses a laser rangefinder to measure the depth of the lava lake at the summit of Kīlauea in the Overlook crater. The lake level was about 58 m (190 ft) below the crater rim this afternoon.

Lava Lake Drops

In recent days the lake level has dropped about 35 m (115 ft) as tiltmeters at the summit have recorded a larger than usual deflationary trend. The spattering of the lava lake (middle right of photograph) was triggered by a small rockfall from the north crater wall directly above. Large rockfalls into the lake typically cause small explosions that hurl molten lava onto the rim of Halemaʻumaʻu Crater, one of the hazards of this area. The tripod in lower right supports one of the Web cams used to track activity of the lava lake.

Thermal Image taken this evening at 7:15 Hawaii Standard Time:

This image is from a temporary thermal camera located on the south rim of Halemaʻumaʻu and looking steeply toward the north at the active Halemaʻumaʻu vent.  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 minimum temperatures within the frame.  Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures.

This image is from a temporary thermal camera located on the south rim of Halemaʻumaʻu and looking steeply toward the north at the active Halemaʻumaʻu vent. 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 minimum temperatures within the frame. Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures.

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