No volcanic gases detected at Mt. Edgecumbe during recent survey.

The Alaska Volcano Observatory is continuing to examine Mt. Edgecumbe and the Mt. Edgecumbe Volcanic Field for further evidence of volcanic activity.

On May 19, 2022, AVO flew a reconnaissance helicopter gas measurement mission to search for evidence of volcanic gas emissions from Mt. Edgecumbe. The helicopter was instrumented with a portable "multi-GAS" (multiple Gas Analyzer System) instrument that measures water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2), and hydrogen sulfide (H2S) gases. Several passes around the Mt. Edgecumbe crater were made but no volcanic gas emissions were detected during the flight.

Field observations from the flight crew on the clear and sunny flight also note that no gas plumes or visible degassing features were seen.

The gas measurement flight was completed the day before the installation of a new seismic and GPS measurement station on nearby Crater Ridge that will help the detection of smaller earthquakes below the volcanic field, locate them more precisely, and measure deformation.

Many thanks to the US Forest Service for all their assistance with our newest seismic station. More information on Mt. Edgecumbe is always available on AVO's website.