page_title: Volcanic ash aggregation
hierarchical_section_title: Volcanic ash aggregation
caption_attribution_description: English: Ash aggregates in ignimbrite from the Oruanui eruption of Taupo volcano, New Zealand
context_page_description: Volcanic ash aggregation occurs when particles of volcanic ash collide and stick together during transport. This process modifies the size distribution of airborne particles, which affects both atmospheric dispersal and fallout patterns on the ground. Aggregation also impacts the dynamics of volcanic plumes, pyroclastic density currents, and their associated hazards.
context_section_description: Volcanic ash aggregation occurs when particles of volcanic ash collide and stick together during transport. This process modifies the size distribution of airborne particles, which affects both atmospheric dispersal and fallout patterns on the ground. Aggregation also impacts the dynamics of volcanic plumes, pyroclastic density currents, and their associated hazards.
caption: Volcanic ash aggregates (accretionary lapilli) in ignimbrite from the Oruanui eruption of Taupo volcano, New Zealand.
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