@article{fdi:010055653, title = {{F}irst estimate of volcanic {SO}2 budget for {V}anuatu island arc}, author = {{B}ani, {P}hilipson and {O}ppenheimer, {C}. and {A}llard, {P}. and {S}hinohara, {H}. and {T}sanev, {V}. and {C}arn, {S}. and {L}ardy, {M}ichel and {G}araebiti, {E}.}, editor = {}, language = {{ENG}}, abstract = {{T}he spatial and temporal coverage of measurements of volcanic gas emissions remains patchy. {H}owever, over the last decade, emissions inventories have improved thanks to new measurements of some of the lesserknown volcanic areas. {W}e report on one such region-the {V}anuatu island arc, in the {S}outhwest {P}acific for which we now have sufficient systematic observations to offer a systematic emissions inventory. {O}ur new estimate is based on {SO}2 flux measurements made in the period 2004-2009 with ultraviolet spectroscopy techniques for the following volcanoes: {Y}asur. {L}opevi, {A}mbrym, {A}mbae, {G}aua and {V}anua {L}ava (from south to north). {T}hese are the first ever measurements for {L}opevi, {G}aua and {V}anua {L}ava. {T}he results reveal the {V}anuatu arc as one of {E}arth's prominent sources of volcanic degassing with a characteristic annual emission to the atmosphere of -3 {T}g of {SO}2 (representing about 20% of hitherto published global estimates). {O}ur new dataset highlights the sustained prodigious degassing of {A}mbrym volcano, whose 5 {G}g day(-1) mean flux of {SO}2 represents nearly two-thirds of the total budget for the {V}anuatu arc. {T}his confirms {A}mbrym as one of the largest volcanic sources worldwide comparable to {E}tna, often considered as the most vigorous source of volcanic emission on {E}arth. {W}e also report a high degassing for {A}mbae of -2 {G}g day(-1) {SO}2, representing more than 28% of the {V}anuatu arc budget. {T}hus, 90% of the {SO}2 output from {V}anuatu is focused in the central part of the arc (from {A}mbrym and {A}mbae) where magmas originate from enriched {I}ndian-type mantle and where peculiar tectonic conditions could favor high magma production rates.}, keywords = {{VANUATU}}, booktitle = {}, journal = {{J}ournal of {V}olcanology and {G}eothermal {R}esearch}, volume = {211}, numero = {}, pages = {36--46}, ISSN = {0377-0273}, year = {2012}, DOI = {10.1016/j.jvolgeores.2011.10.005}, URL = {https://www.documentation.ird.fr/hor/fdi:010055653}, }