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Volcano Watch: Kilauea activity update for February 21, 2013

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Time-lapse movie of Halemaumau overlook vent

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Time-lapse thermal image movie of Halemaumau overlook vent

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Time-lapse movie of Pu‘u ‘O‘o Crater

(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

A lava lake within the Halema`uma`u Overlook vent produced nighttime glow that was visible from the Jaggar Museum overlook and via HVO’s Webcam during the past week. The lake level fluctuated slightly in response to summit DI events but was generally between about 25 and 35 m (80–115 ft) below the floor of Halema`uma`u.

On Kilauea’s east rift zone, breakouts from the Peace Day tube remain active above the pali and on the coastal plain, and small ocean entries are active on both sides of the Hawai`i Volcanoes National Park boundary. In addition, the Kahauale`a flow, fed directly from a spatter cone on the northeastern edge of Pu`u `O`o’s crater floor, continues to advance slowly toward the northeast across a plain of 1980’s-era `a`a flows. This spatter cone is also the source of short lava flows repeatedly spilling down Pu`u `O`o’s entire eastern flank over the past several days.

There were no felt earthquakes in the past week on the Island of Hawai`i.

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Time-lapse infrared image movie of Pu‘u ‘O‘o Crater

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Time-lapse movie of the Peace Day Flow area

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