Not very exciting, but I was sitting near the banks of a lake near my house, and I saw a stream of bubbles emanating from a particular point for about 30 seconds. After a minute, they started again for another 30 seconds. I dug around for a while trying to figure out what it was. I got to the bottom of the lake, and still these bubbles were coming up out of the ground. Any idea what it was?
2007-07-19 10:17:00 · 3 answers · asked by never you mind 2 in Science & Mathematics ➔ Zoology
Methane produced from decaying plant matter is one likely cause. Another is from ground water interaction. If the lake is connected to an aquifer through a spring, water may be seeping into the lake from a pressurized aquifer below. As the water reaches the surface, gas dissolved in the water expand into larger bubbles as they reach the surface and pressure diminishes. Often times, groundwater contains high levels of dissolved carbon dioxide and nitrogen.
2007-07-19 12:33:10 · answer #1 · answered by friedlander1120 1 · 2⤊ 0⤋
probably methane from decaying vegetation. to spite the cartoons, fish don't make bubbles. only creatures that come to the surface to breath air make bubbles. It doesn't sound reasonable that an air breathing creature came to the suface, submerged and buried itself, then breathed out, all while you were sitting on the bank.
of course it could have been a farting turtle...
2007-07-19 10:22:18 · answer #2 · answered by Piglet O 6 · 5⤊ 0⤋
Farting turtles.
2007-07-19 10:21:27 · answer #3 · answered by jjsocrates 4 · 1⤊ 0⤋