@article{fdi:010072880, title = {{I}nfluence of the balance of the intertropical front on seasonal variations of the isotopic composition in rainfall at {K}isiba {M}asoko ({R}ungwe {V}olcanic {P}rovince, {SW}, {T}anzania)}, author = {{N}ivet, {F}. and {B}ergonzini, {L}. and {M}ath{\'e}, {P}.{E}. and {N}oret, {A}. and {M}onvoisin, {G}. and {M}ajule, {A}. and {W}illiamson, {D}avid}, editor = {}, language = {{ENG}}, abstract = {{T}ropical rainfall isotopic composition results from complex processes. {T}he climatological and environmental variability in {E}ast {A}frica increases this complexity. {L}ong rainfall isotope datasets are needed to fill the lack of observations in this region. {A}t {K}isiba {M}asoko, {T}anzania, rainfall and rain isotopic composition have been monitored during 6 years. {M}ean year profiles allow to analyse the seasonal variations. {T}he mean annual rainfall is 2099 mm with a rain-weighted mean composition of -3.2 per mill for {D}elta 18{O} and -11.7 per mill for {D}elta 2{H}. {T}he results are consistent with available data although they present their own specificity. {T}hus, if the local meteoric water line is {D}elta 2{H} = 8.6 {D}elta 18{O} + 14.8, two seasonal lines are observed. {T}he seasonality of the isotopic composition in rain and deuterium excess has been compared with precipitating air masses backtracking trajectories to characterize a simple scheme of vapour histories. {T}he three major oceanic sources have two moisture signatures with their own trajectory histories: one originated from the tropical {I}ndian {O}cean at the beginning of the rainy season and one from the {A}ustral {O}cean at its end. {T}he presented isotopic seasonality depends on the balance of the intertropical front and provides a useful dataset to improve the knowledge about local processes.}, keywords = {{TANZANIE}}, booktitle = {}, journal = {{I}sotopes in {E}nvironmental and {H}ealth {S}tudies}, volume = {54}, numero = {4}, pages = {352--269}, ISSN = {1025-6016}, year = {2018}, DOI = {10.1080/10256016.2018.1443923}, URL = {https://www.documentation.ird.fr/hor/fdi:010072880}, }