@article{fdi:010066241, title = {{E}ruption {S}ource {P}arameters for forecasting ash dispersion and deposition from vulcanian eruptions at {T}ungurahua volcano : insights from field data from the {J}uly 2013 eruption}, author = {{P}arra, {R}. and {B}ernard, {B}enjamin and {N}arvaez, {D}. and {L}e {P}ennec, {J}ean-{L}uc and {H}asselle, {N}. and {F}olch, {A}.}, editor = {}, language = {{ENG}}, abstract = {{T}ungurahua volcano, located in the central area of the {E}cuadorian {S}ierra, is erupting intermittently since 1999 alternating between periods of quiescence and explosive activity. {V}olcanic ash has been the most frequent and widespread hazard provoking air contamination episodes and impacts on human health, animals and crops in the surrounding area. {A}fter two months of quiescence, {T}ungurahua erupted violently on 14th {J}uly 2013 generating short-lived eruptive columns rising up to 9 km above the vent characterized as a vulcanian eruption. {T}he resulting fallout deposits were sampled daily during and after the eruptions to determine grain size distributions and perform morphological and componentry analyses. {D}ispersion and sedimentation of ash were simulated numerically coupling the meteorological {W}eather {R}esearch {F}orecasting ({WRF}) with the volcanic ash dispersion {FALL}3{D} models. {T}he combination of field and numerical studies allowed constraining the {E}ruption {S}ource {P}arameters ({ESP}) for this event, which could be used to forecast ash dispersion and deposition from future vulcanian eruptions at {T}ungurahua. {T}his set of pre-defined {ESP} was further validated using two different eruptions, as blind test, occurring on 16th {D}ecember 2012 and 1st {F}ebruary 2014.}, keywords = {{V}olcanic ash ; {ESP} ; {V}ulcanian eruptions ; {WRF} ; {FALL}3{D} ; {T}ungurahua ; {EQUATEUR} ; {TUNGURAHUA} {VOLCAN}}, booktitle = {}, journal = {{J}ournal of {V}olcanology and {G}eothermal {R}esearch}, volume = {309}, numero = {}, pages = {1--13}, ISSN = {0377-0273}, year = {2016}, DOI = {10.1016/j.jvolgeores.2015.11.001}, URL = {https://www.documentation.ird.fr/hor/fdi:010066241}, }