Kilauea, Hawaii, USA

HVO reported that during 6 and 9-12 August lava flowed SE through a lava tube system from underneath Kilauea’s Thanksgiving Eve Breakout (TEB) and rootless shield complex to the Waikupanaha ocean entry. Occasional explosions and surface lava flows were noted near the ocean entry. A small fountain in a lava pond at the top of one of the rootless shields was observed on 10 August. The sulfur dioxide emission rate at Pu’u ‘O’o was 1,700 and 2,400 tonnes per day on 8 and 9 August, respectively; the average background rate is about 2,000 tonnes per day.

During the reporting period, Kilauea earthquakes were variously located beneath Halema’uma’u crater, along the Koa’e fault system, SE and W of the caldera, along the S-flank faults, and along the E and SW rift zones. Beneath Halema’uma’u crater, up to 100 small earthquakes per day (background is 20-40) also occurred but were too small to be located more precisely. The vent in Halema’uma’u crater continued to produce a mainly white plume with minor ash content that drifted SW. The plume was occasionally tinged brown. Night-time incandescence was seen at the base of the plume rock-clattering sounds were heard in the vicinity of the crater. The sulfur dioxide emission rate was high at 900 tonnes per day on 7 August. The pre-2008 background rate was 150-200 tonnes per day.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

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