Volcano Watch: Kilauea activity update for October 12, 2017


This video clip shows typical pāhoehoe breakouts on the coastal plain, as well as a small channelized ‘a‘ā flow on the pali. Photo taken Sunday, October 8, 2017 courtesy of USGS/HVO


Time-lapse thermal image movie of Halemaumau Overlook Vent. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse movie of KÄ«lauea Caldera from Hawaiian Volcano Observatory. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. October 5-12, 2017. Images courtesy of Hawaii Volcanoes National Park

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

This past week, Kīlauea Volcano’s summit lava lake level fluctuated with summit inflation and deflation, ranging about 32–39 m (105–128 ft) below the vent rim. On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna and surface breakouts downslope of Pu‘u ‘Ō‘ō. The 61g flows do not pose an immediate threat to nearby communities.

Mauna Loa is not erupting. Rates of deformation and seismicity did not change significantly over the past week, but persist above long-term background levels. Small-magnitude earthquakes occurred beneath the summit caldera and upper Southwest Rift Zone, primarily at depths less than 5 km (3 mi), with some deeper events at depths of 5–13 km (3–8 mi). GPS measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone. No significant changes in volcanic gas emissions were measured.

No earthquakes were reported felt on the Island of Hawaiʻi during the past week.


Time-lapse movie of Pu’u ‘O’o Crater. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse movie from a camera positioned on the southeast flank of Puʻu ʻŌʻō, looking toward the active flow advancing to the southeast. The breakout point is at the left edge of the image, and the mid-field skyline at the right is roughly coincident with the top of the pali. October 5-12, 2017. Images courtesy of USGS/HVO


Time-lapse image movie from a research camera positioned on Holei Pali, looking east towards Lava Flow 61G and Kalapana. October 5-12, 2017. Images courtesy of USGS/HVO

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