Gas sample set up for collecting a helium sample at Shrub's summit pond.

Gas sample set up for collecting a helium sample at Shrub's summit pond.

Date: Jun 20th, 2019
Volcano(es): Klawasi Group
Photographer: Lopez, Taryn
URL: avo.alaska.edu/image/view/141341

Shrub 2019/03

From Orr and others, 2023: "During a field visit to the Klawasi group mud volcanoes in June 2019, AVO scientists found a new extrusion of mud at the base of Shrub mud volcano’s north flank. The extrusion was active during the visit and had started recently, given that evergreens partly buried by the flow were just beginning to turn orange. Satellite imagery indicates this activity probably started between March 7 and March 9. The flows, which came from vents on mud deposits dating to the late 1990s and early 2000s, extended northeast and spread into the adjacent forest to the north. Satellite data showed that the extrusive activity continued until at least October 21 before stopping sometime in the subsequent winter. The vents were inactive by the time satellite views of the area resumed in early February 2020, although new vents had opened immediately south of the old ones."

Image courtesy of the AVO/UAF-GI.
Please cite the photographer and the Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image.
Full Resolution.