| Title: |
Experimental simulations of volcanic ash resuspension by wind under the effects of atmospheric humidity |
| Authors: |
Del Bello, Elisabetta; Taddeucci, Jacopo; Merrison, Jonathan P; Alois, Stefano; Iversen, J. J.; Scarlato, Piergiorgio |
| Contributors: |
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia; #PLACEHOLDER_PARENT_METADATA_VALUE# |
| Publication Year: |
2018 |
| Collection: |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
| Subject Terms: |
detachment thresold; volcanic ash; wind friction velocity; wind tunnel; 04.08. Volcanology; 01.01. Atmosphere |
| Description: |
Ash deposited during volcanic eruptions can be resuspended by wind and become hazardous for health and infrastructure hours to decades after an eruption. Accurate resuspension forecasting requires accurate modelling of the threshold friction velocity of the volcanic particles (Uth*), which is the key parameter controlling volcanic ash detachment by wind. Using an environmental wind tunnel facility this study provides much needed experimental data on volcanic particle resuspension, with the first systematic parameterization of Uth* for ash from the regions Campi Flegrei in Italy and also Eyjafjallajökull in Iceland. In this study atmospheric relative humidity (and related ash moisture content) was systematically varied, from 90%, which in the case of the Eyjafjallajökull fine ash ( |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
2045-2322 |
| Relation: |
Scientific reports; / 8 (2018) |
| DOI: |
10.1038/s41598-018-32807-2 |
| Availability: |
https://www.earth-prints.org/handle/2122/12272; https://www.nature.com/articles/s41598-018-32807-2; https://doi.org/10.1038/s41598-018-32807-2 |
| Rights: |
CC0 1.0 Universal ; http://creativecommons.org/publicdomain/zero/1.0/ |
| Accession Number: |
edsbas.AED0926D |
| Database: |
BASE |