Volcano Watch: Kilauea activity update for November 29, 2012

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Time-lapse movie of Halemaumau overlook vent

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Time-lapse thermal image movie of Halemaumau overlook vent

(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 night-time glow that was visible from the Jaggar Museum overlook and via HVO’s Webcam during the past week. Since achieving an unusually high level during October, the lava lake has dropped to a deeper level within the Overlook crater. Over the past week, the lava level rose slightly and experienced a few short-lived rise-fall cycles.

On Kilauea’s east rift zone, surface lava flows are still active on the coastal plain. Lava reached the ocean on Saturday, November 24, creating a very weak ocean entry with a small, sporadic plume. The flows on the coast are straddling the far eastern boundary of Hawai`i Volcanoes National Park, and the new ocean entry is outside the Park. Within the Pu`u `O`o crater, the northeastern pit still holds a small lava lake, and occasional small flows have recently erupted from a few openings near the southeastern edge of the crater.

Two earthquakes were reported felt in the last week. A magnitude-4.3 earthquake occurred at 5:59 p.m., HST, on November 24, 2012, and was located about 7 km (4 miles) northeast of Lo`ihi seamount at a depth of 17 km (11 miles). A magnitude-3.8 quake occurred at 1:56 a.m. on November 25, 2012, and was located about 9 km (6 miles) northwest of Ka`ena Point at a depth of 9 km (6 miles).

Visit the HVO Web site (http://hvo.wr.usgs.gov) for detailed Kilauea, Mauna Loa, and Hualalai activity updates, recent volcano photos, recent earthquakes, and more; call (808) 967-8862 for a Kilauea summary; email questions to askHVO@usgs.gov.

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

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