We present the first large dataset of dissolved silicon isotopes signatures(δ<sup>30</sup>Si)in different tropical rivers,including the Amazon and the Congo,the two largest silicon suppliers to the world ...We present the first large dataset of dissolved silicon isotopes signatures(δ<sup>30</sup>Si)in different tropical rivers,including the Amazon and the Congo,the two largest silicon suppliers to the world ocean.A two-year long monthly series was obtained in the Congo River upstream of the Kinshasa/Brazzaville urban zone.Spatial and temporal variations in the Amazon River and its main tributaries were studied for one year.Both the Congo and Amazon rivers convey similar meanδ<sup>30</sup>Si signatures to the ocean （close to +0.8‰）,in the range of the few previously published data for those rivers.The Congo River exhibits limited seasonal variations,with the exception of some largeδ<sup>30</sup>Si variations that展开更多
文摘We present the first large dataset of dissolved silicon isotopes signatures(δ<sup>30</sup>Si)in different tropical rivers,including the Amazon and the Congo,the two largest silicon suppliers to the world ocean.A two-year long monthly series was obtained in the Congo River upstream of the Kinshasa/Brazzaville urban zone.Spatial and temporal variations in the Amazon River and its main tributaries were studied for one year.Both the Congo and Amazon rivers convey similar meanδ<sup>30</sup>Si signatures to the ocean （close to +0.8‰）,in the range of the few previously published data for those rivers.The Congo River exhibits limited seasonal variations,with the exception of some largeδ<sup>30</sup>Si variations that
