ArticleScience advances2022
First field evidence of the electrical multipolar nature of volcanic aggregates.
Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
3 citing papers in PubMed, 6 citations in OpenAlex.
- In-situ evidence of volcanic ash aggregation during fallout from combined ground- and UAS-based observations.Scientific reports · 2026Article
- Measuring the electrical charge and settling velocity of volcanic ash with a new, cost-effective apparatus (VoltAsh) both in the laboratory and in the field.Bulletin of volcanology · 2026Article
- Electragel for Advanced Static Charge Mitigation and Energy Harvesting.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The description of the formation of ash aggregates is crucial to our understanding of tephra dispersal and, therefore, to the forecasting of volcanic ash concentration in the atmosphere. Regardless of the importance of electrostatic processes, particle and aggregate charge is of complex determination both in the field and in the laboratory. We have measured the bulk charge carried by single aggregates at Sakurajima volcano (Japan) by inverting the sedimentation trajectory across two high-voltage copper plates filmed using a high-speed camera. Some aggregates were filmed during their breakage caused by the external electric field, which revealed the presence of inner highly charged multipoles with bulk charge up to one order of magnitude larger than the bulk aggregate. This electrical multipolar nature reveals the key role played by multipoles in aggregate formation and the shielding effect of aggregation on particle charge.
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Registered trials
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