AVO studies resuspended volcanic ash from the Katmai region to Kodiak Island, Alaska

Air quality instrument to measure particulate matter
Alaska Volcano Observatory scientists are re-deploying instruments in two locations on Kodiak Island to monitor air quality during high wind events that transport reworked, 100-year-old volcanic ash from the Katmai region to Shelikof Strait, Kodiak Island, and the Gulf of Alaska. These clouds, easily visible on satellite images, contain volcanic ash shards that are a known hazard to aviation. Scientists are studying other effects of the remobilized ash fallout on the ground and whether there is a public health hazard. This phenomenon is not the result of new volcanic activity, but occurs seasonally in the spring and fall during times of high winds and dry, snow-free conditions in the Katmai area and in other young volcanic areas of Alaska. The USGS and AVO work closely with the National Weather Service, who has the responsibility to issue forecasts and statements of resuspended volcanic ash.

More information on resuspended volcanic ash from the Katmai region can be found by clicking here.

SEM image of resuspended volcanic ash