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How They Blow: Secrets of Yellowstone's Geysers (LiveScience)

Lone Star Geyser in Yellowstone National Park erupts about every three hours. It is one of the park's biggest geysers. (Courtesy Shaul Hurwitz) 

Despite more than a century of scrutiny, the inner workings of Old Faithful and other Yellowstone National Park geysers remain a mystery.

Scientists still hash over the basics, such as how water and steam pressurizes underground before a geyser erupts. Now, a high-tech look at Lone Star Geyser, one of the park's most punctual bubblers, could finally solve some of these long-standing puzzles. The research may also help scientists better understand and predict volcanic eruptions.

"The signals we record in geysers may put better constraints on the sources that generate those signals in volcanoes," said Shaul Hurwitz, a co-author of the study and a research hydrologist with the U.S. Geological Survey in Menlo Park, Calif.

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