VIDEO: New footage captures “cyclic fluctuations” at Halema‘uma‘u lava fissure

This USGS video shows “cyclic fluctuations” in eruptive vigor that were present Jan. 22-23, 2021, at the western fissure in Halema‘uma‘u crater at the summit of Kilauea volcano. The cycles lasted 5-6 minutes.

Peaks in the cycles resulted in high flow rates in the channel and spattering at the vents. During troughs in the cycles, the fissure became nearly inactive. These variations may be due to oscillations in the height of the lava column in the vent, according to USGS. The video is shown at 90X speed.


Leave a Reply

Your email address will not be published. Required fields are marked *


By participating in online discussions you acknowledge that you have agreed to the Star-Advertiser's TERMS OF SERVICE. An insightful discussion of ideas and viewpoints is encouraged, but comments must be civil and in good taste, with no personal attacks. If your comments are inappropriate, you may be banned from posting. To report comments that you believe do not follow our guidelines, email