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岩石学报 2011
Greenhouse gases flux estimation of hot springs in Changbaishan volcanic field,NE China
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Abstract:
Hot springs, which belong to the direct manifestations of deep-derived magma activities, are ample and intensive in Changbaishan volcanic field, NE China. Greenhouse gases emitting from hot springs take up an important part of the total flux contributed by the whole volcanic field. However, there remains no research on greenhouse gases flux estimation of hot springs in volcanic fields of China. A new apparatus named GL-103B digital bubble/liquid flowmeter is used to measure the gas fluxes of the Lake shoreline hot spring belt, Julong hot spring area, Jinjiang hot springs and 18daogou hot springs in changbaishan volcanic field. Combining with the previous studies on gas compositions, the total flux of greenhouse gases emitting from hot springs in Changbaishan volcanic field has been estimated. The results of greenhouse gases flux in this area, 6.9×104 t·a-1 for CO2 and 428.44t·a-1 for CH4, could be compared to that of Pantelleria Island volcano in Sicily, Italy. As is revealed by this study, the digital bubble/liquid flowmeter could be considered as a suitable choice for greenhouse gases flux estimation of hot springs in volcanic fields.
