Ключевые слова: activity, air, airborne, ash, ashfall, atmospheric, cloud, clouds, daylight, disaster, dust, earth, energy, environment, eruption, event, explosion, explosive, force, gases, geological, geology, gray, hot, landscape, low, magma, mountain, natural, nature, particles, phenomenon, plume, quality, risk, sky, smoke, terrain, visibility, volcanic, warning, weather, wilderness,