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

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Time-lapse thermal-image 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 about 30 m (100 ft) below the floor of Halema`uma`u.

On Kilauea’s east rift zone, surface lava flows remain active about a kilometer (0.6 miles) out from the base of the pali, as well as near the coast. Weak ocean entries scattered along the sea cliff remain active on both sides of the Hawai`i Volcanoes National Park boundary. At Pu`u `O`o, lava erupting from a complex of spatter cones on the northeast side of the crater floor — the former site of a small lava lake — travels down the northeastern flank of the Pu`u `O`o cone via an incipient lava tube. This lava is feeding a slow-moving pahoehoe flow spreading at the northern base of the cone. Also, a patch of surface flows was active about 5 km (about 3 km) southeast of Pu`u `O`o, above the pali.

There was one felt earthquake in the past week on the Island of Hawai`i. A magnitude-3.1 earthquake occurred at 6:44 p.m., HST, on Sunday, February 5, 2013, and was located 10 km (6 mi) southeast of Ho`okena at a depth of 28 km (18 mi).

Visit the HVO Web site (http://hvo.wr.usgs.gov) for Volcano Awareness Month details and 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.

Lava from the tiny lava pond flows directly into a tube on its north side. In this photo, the tube starts at the left edge of the pond and heads toward the heavy fume at the left edge of the photo. This tube carries the lava downslope where it is feeding a slow-moving pāhoehoe flow spreading across a nearly flat-lying plain of ʻaʻā flows at the northern base of Puʻu ʻŌʻō. Photo courtesy of USGS/HVO

A small lava lake, which has been present on the northeast side of PuÊ»u ʻŌʻō’s crater floor for nearly a year, has evolved into a tiny pond perched several meters (yards) above the surrounding crater floor, as pictured here. The pond sits near the top of a mound of lava composed of spatter cones and lava pond overflows. Flows from the pond and other nearby spatter cones have inundated the east rim of the crater, which would normally be visible in the background just behind spatter cone complex shown here. Photo courtesy of USGS/HVO

Since the beginning of the year, lava erupting from several openings in PuÊ»u ʻŌʻō’s crater have filled the crater to overflowing. The two eastern-most openings, topped by spatter cones, can be seen in this photo. The one in the background holds the small lava pond shown in the photos above and feeding the northern lava flow. The east rim of the crater, which wraps around from the rim in the foreground (the south rim) to the rim in the background near the upper left side of the photo (the north rim), has been completely buried. Photo courtesy of USGS/HVO

This photo, captured fortuitously, shows a lava flow seconds after it burst from the side of a low tumulus. While initially relatively fast-moving, the flow slowed to a crawl within a few minutes, matching the very slow advancement rate seen elsewhere along the front of the flow. Photo courtesy of USGS/HVO

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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 the Peace Day Flow area