#summit lava lake

The Feb. 3 installment of “Volcano Watch” introduced some of the data streams that are used to monitor eruption pauses and renewals at Kīlauea’s summit, including ground tilt from borehole tiltmeters. Tilt data also provided valuable insight into the behavior of the lava lake that occupied Halemaʻumaʻu crater from 2008–2018, before the series of collapses in 2018 changed Kīlauea’s summit topography.