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Volcano Watch: Kilauea activity update for November 7, 2013

Active pāhoehoe breakouts are scattered across portions of the Kahaualeʻa 2 flow. This photo shows a nice example of ropy pāhoehoe active near the flow margin. Photo courtesy of USGS/HVO

Active pāhoehoe breakouts are scattered across portions of the Kahaualeʻa 2 flow. This photo shows a nice example of ropy pāhoehoe active near the flow margin. Photo courtesy of USGS/HVO


(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 via HVO’s Webcam during the past week. A single deflation-inflation cycle (DI event) occurred during the week (as of Thursday, November 7), and the lava lake level fell, then correspondingly rose again.

On Kīlauea’s East Rift Zone, a breakout from the Peace Day tube above the pali was active early in the week, but no activity was observed on Thursday, November 7. The Peace Day flow, which started on September 21, 2011, is no longer active. The Kahauale‘a 2 flow, fed from a spatter cone on the northeast edge of the Pu‘u ‘Ō‘ō crater, is now the only active flow. The Kahauale`a 2 flow continues to advance slowly across old flows and into the forest. Its tip was 6.4 km (4.0 miles) northeast of Pu‘u ‘Ō‘ō when mapped on November 7.

No earthquakes were reported felt on the Island of Hawai‘i during the past week.

Small-scale map showing Kīlauea’s east rift zone flow field as of November 7, 2013. The Peace Day flow (light orange), which began September 21, 2011, is no longer active. All east rift zone eruptive activity is now focused into the Kahaualeʻa 2 flow, which is advancing slowly toward the northeast from Puʻu ʻŌʻō. The Kahaualeʻa 2 flow as of October 21 is shown in pink, while advancement of the flow as of November 7 is shown in red. Older lava flows are labeled with the years in which they were active: episodes 1–48b flows (1983–1986) are shown in gray; episodes 48c–49 flows (1986–1992) are pale yellow; episodes 50–55 flows (1992–2007) are tan; and episodes 58–60 flows (2007–2011) are pale orange. The active lava tube is shown with a yellow line.

Small-scale map showing Kīlauea’s east rift zone flow field as of November 7, 2013. The Peace Day flow (light orange), which began September 21, 2011, is no longer active. All east rift zone eruptive activity is now focused into the Kahaualeʻa 2 flow, which is advancing slowly toward the northeast from Puʻu ʻŌʻō. The Kahaualeʻa 2 flow as of October 21 is shown in pink, while advancement of the flow as of November 7 is shown in red. Older lava flows are labeled with the years in which they were active: episodes 1–48b flows (1983–1986) are shown in gray; episodes 48c–49 flows (1986–1992) are pale yellow; episodes 50–55 flows (1992–2007) are tan; and episodes 58–60 flows (2007–2011) are pale orange. The active lava tube is shown with a yellow line.

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