Water column chemistry above several seep sites, Gulf of Mexico, September 2012 - June 2013

The Gulf of Mexico (GOM) hosts an abundance of hydrocarbon seeps, which influences water column chemistry and the labile carbon in the aphotic GOM. The aphotic zone receives direct injection of seep methane (CH4), but CH4 from an unknown source has been reported at supersaturated concentrations relative to the atmosphere in the GOM photic zone. These data were collected at several seep sites in the Gulf of Mexico from September 2012 to June 2013.墨西哥湾（Gulf of Mexico, GOM）蕴藏着丰富的烃类渗漏（hydrocarbon seeps）活动，此类活动会对海湾水柱的化学组成以及无光带（aphotic zone）内的不稳定碳库产生影响。尽管无光带会直接接收渗漏甲烷（CH4）的输入，但已有研究报道，墨西哥湾透光带（photic zone）内存在浓度相对于大气过饱和的未知来源甲烷（CH4）。本数据集采集于2012年9月至2013年6月期间，覆盖墨西哥湾内的多处烃类渗漏点位。