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Ash aggregation during the 11 February 2010 partial dome collapse of the Soufrière Hills Volcano, Montserrat
| Content Provider | Semantic Scholar |
|---|---|
| Author | Burns, Fiona Anne Bonadonna, Costanza Pioli, Laura Cole, Paul D. Stinton, Adam J. |
| Copyright Year | 2017 |
| Abstract | Abstract On 11 February 2010, Soufriere Hills Volcano, Montserrat, underwent a partial dome collapse (~ 50 × 106 m3) and a short-lived Vulcanian explosion towards the end. Three main pyroclastic units were identified N and NE of the volcano: dome-collapse pyroclastic density current (PDC) deposits, fountain-collapse PDC deposits formed by the Vulcanian explosion, and tephra-fallout deposits associated with elutriation from the dome-collapse and fountain-collapse PDCs (i.e. co-PDC fallout deposit). The fallout associated with the Vulcanian explosion was mostly dispersed E and SE by high altitude winds. All units N and NE of the volcano contain variable amounts and types of particle aggregates, although the co-PDC fallout deposit is associated with the largest abundance (i.e. up to 24 wt%). The size of aggregates found in the co-PDC fallout deposit increases with distance from the volcano and proximity to the sea, reaching a maximum diameter of 12 mm about 500 m from the coast. The internal grain size of all aggregates have nearly identical distributions (with Mdϕ ≈ 4–5), with particles in the size categories > 3 ϕ (i.e. |
| Starting Page | 92 |
| Ending Page | 112 |
| Page Count | 21 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jvolgeores.2017.01.024 |
| Alternate Webpage(s) | https://pearl.plymouth.ac.uk/bitstream/handle/10026.1/8676/Burns-etal_Accepted%20manuscript.pdf?isAllowed=y&sequence=2 |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jvolgeores.2017.01.024 |
| Volume Number | 335 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
