Site 2 - Black Moshannon, Centre County

No wells were located within a 4500ft buffer around the highest methane levels (located in the lake), leading us to conclude that the methane was biogenic, not thermogenic (i.e. not from a well). Methane levels decreased as we moved downstream, since the methane was diluted. Increasing methane levels were detected in the late summer, possibly due to an increased population in agriculture or marine life.

在湖泊最高甲烷浓度区域周边4500英尺的范围内未发现任何井口，由此我们推断甲烷的生成来源为生物源而非热源（即非井口来源）。随着流向下游，甲烷浓度逐渐降低，这是因为甲烷被稀释的缘故。在夏季晚期，检测到甲烷浓度上升，这或许与农业或海洋生物数量的增加有关。