Monthly Archives: March 2008

Rabaul, Papua New Guinea

RVO reported that ash plumes from Rabaul caldera’s Tavurvur cone rose to altitudes of 2.7-3.2 km (8,900-10,500 ft) a.s.l. and drifted N, NW, W, SW, and S during 12-19 March. Ashfall was reported in areas downwind, including Rabaul Town (3-5 … Continue reading

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Popocatépetl, Mexico

CENAPRED reported that emissions of steam and gas from Popocatépetl were visible during 12-18 March. The plumes occasionally contained slight amounts of ash. Ash plumes on 17 March rose to altitudes of 7.4-7.9 km (24,300-26,000 ft) a.s.l. and drifted NE. … Continue reading

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Ol Doinyo Lengai, Tanzania

Based on a pilot observation, the Toulouse VAAC reported that an ash plume rose to an altitude of 12.2 km (40,000 ft) a.s.l. on 13 March. The plume was not confirmed using satellite imagery. A plume at an altitude of … Continue reading

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Colima, Mexico

Multiple steam plumes from Colima were observed rising to altitudes of 3.9-4.6 km (12,800-15,100 ft) a.s.l. during 12-18 March. Gray plumes rose to altitudes of 4-4.8 km (13,100-15,700 ft) a.s.l. on 14 and 18 March. Plumes drifted multiple directions. Source: … Continue reading

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Anatahan, Mariana Islands, United States

The USGS reported that elevated seismicity at Anatahan continued during 12-13 March, then dropped to near background levels on 14 and 15 March. Based on observations of satellite imagery, the Washington VAAC reported that an ash plume was spotted around … Continue reading

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Kilauea, Hawaii, USA

Based on visual observations from HVO and National Park Service (NPS) crews as well as web camera views, HVO reported that during 12-18 March lava flow activity from Kilauea’s Thanksgiving Eve Breakout (TEB) shield was concentrated at rootless satellitic shields … Continue reading

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Karymsky, Russia

KVERT reported that seismic activity at Karymsky was slightly above background levels during 7-14 March. Observations of satellite imagery revealed that a weak thermal anomaly was present in the crater on 9 and 12 March. On 13 March, an ash … Continue reading

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How fast does lava flow?

The answer to your question depends on the composition of the lava and the slope it is going down.   Pahoehoe, the smooth form of basalt usually travels very slowly–at speeds of only a few meters per hour, averaged over the … Continue reading

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How quickly can you walk across lava? Would it burn through your shoe?

If you needed to walk across lava, it is possible.  If it is pahoehoe lava (the smooth glassy type) it will support your weight after only 5-10 minutes once it stops moving. It will still be pretty hot and uncomfortable, … Continue reading

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Is there any clothing to protect you from spray or splash contact of lava?

Just the radiant heat from a big lava flow is enough to burn you badly–you don’t even have to touch it.  Radiant heat is heat that you feel from a distance. For example, if your oven is on and you … Continue reading

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