FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation
Eruption source parameters (ESP) characterizing volcanic eruption plumes are crucial inputs for atmospheric tephra dispersal models, used for hazard assessment and risk mitigation.We present FPLUME-1.0, a steady-state 1-D (one-dimensional) cross-section-averaged eruption column model based on the bu...
Published in: | Geoscientific Model Development |
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Online Access: | http://hdl.handle.net/2122/10283 https://doi.org/10.5194/gmd-9-431-2016 |
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ftingv:oai:www.earth-prints.org:2122/10283 2023-05-15T16:09:39+02:00 FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation Folch, A. Costa, A. Macedonio, G. Folch, A.; CASE Department, Barcelona Supercomputing Center, Barcelona, Spain Costa, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia Macedonio, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia CASE Department, Barcelona Supercomputing Center, Barcelona, Spain Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia 2016 http://hdl.handle.net/2122/10283 https://doi.org/10.5194/gmd-9-431-2016 en eng Copernicus Gesellschaft GMBH Geoscientific Model Development /9 (2016) 1991-959X 1991-9603 http://hdl.handle.net/2122/10283 doi:10.5194/gmd-9-431-2016 open eruption column volcanic modeling 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous article 2016 ftingv https://doi.org/10.5194/gmd-9-431-2016 2022-07-29T06:07:02Z Eruption source parameters (ESP) characterizing volcanic eruption plumes are crucial inputs for atmospheric tephra dispersal models, used for hazard assessment and risk mitigation.We present FPLUME-1.0, a steady-state 1-D (one-dimensional) cross-section-averaged eruption column model based on the buoyant plume theory (BPT). The model accounts for plume bending by wind, entrainment of ambient moisture, effects of water phase changes, particle fallout and re-entrainment, a new parameterization for the air entrainment coefficients and a model for wet aggregation of ash particles in the presence of liquid water or ice. In the occurrence of wet aggregation, the model predicts an effective grain size distribution depleted in fines with respect to that erupted at the vent. Given a wind profile, the model can be used to determine the column height from the eruption mass flow rate or vice versa. The ultimate goal is to improve ash cloud dispersal forecasts by better constraining the ESP (column height, eruption rate and vertical distribution of mass) and the effective particle grain size distribution resulting from eventual wet aggregation within the plume. As test cases we apply the model to the eruptive phase-B of the 4 April 1982 El Chichón volcano eruption (México) and the 6 May 2010 Eyjafjallajökull eruption phase (Iceland). The modular structure of the code facilitates the implementation in the future code versions of more quantitative ash aggregation parameterization as further observations and experiment data will be available for better constraining ash aggregation processes. This work was partially supported by the MED-SUV Project funded by the European Union (FP7 grant agreement no. 308665). Published 431-450 3V. Dinamiche e scenari eruttivi JCR Journal open Article in Journal/Newspaper Eyjafjallajökull Iceland Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Geoscientific Model Development 9 1 431 450 |
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Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
eruption column volcanic modeling 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous |
spellingShingle |
eruption column volcanic modeling 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous Folch, A. Costa, A. Macedonio, G. FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
topic_facet |
eruption column volcanic modeling 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous |
description |
Eruption source parameters (ESP) characterizing volcanic eruption plumes are crucial inputs for atmospheric tephra dispersal models, used for hazard assessment and risk mitigation.We present FPLUME-1.0, a steady-state 1-D (one-dimensional) cross-section-averaged eruption column model based on the buoyant plume theory (BPT). The model accounts for plume bending by wind, entrainment of ambient moisture, effects of water phase changes, particle fallout and re-entrainment, a new parameterization for the air entrainment coefficients and a model for wet aggregation of ash particles in the presence of liquid water or ice. In the occurrence of wet aggregation, the model predicts an effective grain size distribution depleted in fines with respect to that erupted at the vent. Given a wind profile, the model can be used to determine the column height from the eruption mass flow rate or vice versa. The ultimate goal is to improve ash cloud dispersal forecasts by better constraining the ESP (column height, eruption rate and vertical distribution of mass) and the effective particle grain size distribution resulting from eventual wet aggregation within the plume. As test cases we apply the model to the eruptive phase-B of the 4 April 1982 El Chichón volcano eruption (México) and the 6 May 2010 Eyjafjallajökull eruption phase (Iceland). The modular structure of the code facilitates the implementation in the future code versions of more quantitative ash aggregation parameterization as further observations and experiment data will be available for better constraining ash aggregation processes. This work was partially supported by the MED-SUV Project funded by the European Union (FP7 grant agreement no. 308665). Published 431-450 3V. Dinamiche e scenari eruttivi JCR Journal open |
author2 |
Folch, A.; CASE Department, Barcelona Supercomputing Center, Barcelona, Spain Costa, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia Macedonio, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia CASE Department, Barcelona Supercomputing Center, Barcelona, Spain Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia |
format |
Article in Journal/Newspaper |
author |
Folch, A. Costa, A. Macedonio, G. |
author_facet |
Folch, A. Costa, A. Macedonio, G. |
author_sort |
Folch, A. |
title |
FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
title_short |
FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
title_full |
FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
title_fullStr |
FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
title_full_unstemmed |
FPLUME-1.0: An integrated volcanic plume model accounting for ash aggregation |
title_sort |
fplume-1.0: an integrated volcanic plume model accounting for ash aggregation |
publisher |
Copernicus Gesellschaft GMBH |
publishDate |
2016 |
url |
http://hdl.handle.net/2122/10283 https://doi.org/10.5194/gmd-9-431-2016 |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_relation |
Geoscientific Model Development /9 (2016) 1991-959X 1991-9603 http://hdl.handle.net/2122/10283 doi:10.5194/gmd-9-431-2016 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/gmd-9-431-2016 |
container_title |
Geoscientific Model Development |
container_volume |
9 |
container_issue |
1 |
container_start_page |
431 |
op_container_end_page |
450 |
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1766405502571380736 |