Shrub 2019/03

Start: March 8, 2019 ± 1 Days [1]

Stop: December 19, 2019 ± 58 Days [1]

Event Type: Not an eruption

Event Characteristics:
  • Fumarolic or hydrothermal activity [1]

Description: 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."

Images

References Cited

[1] 2019 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory, 2023

Orr, T.R., Cameron, C.E., Dietterich, H.R., Dixon, J.P., Enders, M.L., Grapenthin, R., Iezzi, A.M., Loewen, M.W., Power, J.A., Searcy, C., Tepp, G., Toney, L., Waythomas, C.F., and Wech, A.G., 2023, 2019 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2023-5039, 64 p., https://doi.org/10.3133/sir20235039.
Full-text PDF 14.3 MB

Complete Eruption References

2019 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory, 2023

Orr, T.R., Cameron, C.E., Dietterich, H.R., Dixon, J.P., Enders, M.L., Grapenthin, R., Iezzi, A.M., Loewen, M.W., Power, J.A., Searcy, C., Tepp, G., Toney, L., Waythomas, C.F., and Wech, A.G., 2023, 2019 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2023-5039, 64 p., https://doi.org/10.3133/sir20235039.
Full-text PDF 14.3 MB
× Instrument data