Methane in underground air in Gibraltar karst
Methane in underground air in Gibraltar karst
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DOI：
10.1016/j.epsl.2013.05.011
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发表时间：
2013-07-15
影响因子：
5.3
通讯作者：
Fairchild, I. J.
中科院分区：
文献类型：
--
作者：
Mattey, D. P.;Fisher, R.;Fairchild, I. J.
岩溶区非饱和带中甲烷气体的丰度及其地球化学行为目前还知之甚少。报告了直布罗陀圣迈克尔斯洞穴在4年期间每月收集的背景大气、土壤空气和洞穴空气中甲烷的浓度和C-13增量，该洞穴的区域气候、地表和洞穴过程都有很好的记录。在直布罗陀土壤中测得的甲烷浓度低于当地背景大气平均值1868 ppb，
Little is known about the abundance and geochemical behaviour of gaseous methane in the unsaturated zone of karst terrains. The concentrations and delta C-13 of methane in background atmosphere, soil air and cave air collected at monthly intervals over a 4 yr period are reported for St. Michaels Cave, Gibraltar, where the regional climate, surface and cave processes are well documented. Methane concentrations measured in Gibraltar soil are lower than the local background atmosphere average of 1868 ppb and fall to