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Lake Abraham’s methane bubbles are produced by bacteria on the lake bed feeding on dead plant matter. In the summer, the gas rises to the surface and escapes, but when the lake freezes over, the bubbles are trapped in the ice. Methane is a greenhouse gas, which traps heat in the atmosphere and contrib
Bubbling under
suspended in ice. These beautiful bubbles
photographer’s dream. But beneath the
the Canadian Rocky Mountains is a
frozen waters lie towers of bubbles,
On the surface, Lake Abraham in
methane gas. hide an ugly secret—they contain harmful Lake Abraham is an artificial lake, created in 1972 by damming the North Saskatchewan River. Stacks of methane bubbles pile up, as if a bubble-making machine has stopped in mid-flow.
US_076-077_309600_Bubbling_under.indd 76 19/12/17 12:56 pm
