About 0.6 kilograms of methane emerge each second in the summer, Mumma said, which is comparable to the emissions from a natural oil seep near Santa Barbara, California.

• 穆马称，夏季每秒钟散发出的甲烷为大约0.；6千克，相当于加州圣塔芭芭拉附近天然油渗漏处的散发量。