Helicopter to fly X-ray device over Yellowstone, map out underground plumbing system

FILE - In This Feb.14, 2011 file photo, a group of bison graze, just inside Yellowstone National Park near Gardiner, Mont. Yellowstone National Park proposes to kill roughly 1,000 wild bison this winter, mostly calves and females, as officials seek to reduce the animals’ annual migration into Montana. Park officials are scheduled to meet Thursday, Nov. 19, 2015,  with representatives of American Indian tribes, the state and other federal agencies to decide on the plan.   (AP Photo/Ted S. Warren, File)
FILE - In This Feb.14, 2011 file photo, a group of bison graze, just inside Yellowstone National Park near Gardiner, Mont. Yellowstone National Park proposes to kill roughly 1,000 wild bison this winter, mostly calves and females, as officials seek to reduce the animals’ annual migration into Montana. Park officials are scheduled to meet Thursday, Nov. 19, 2015, with representatives of American Indian tribes, the state and other federal agencies to decide on the plan. (AP Photo/Ted S. Warren, File)

BILLINGS, Mont. (AP) – Scientists from the United States and Denmark are launching a study to map out the underground plumbing system responsible for Old Faithful and other blasting geysers and boiling hot springs of Yellowstone National Park.

Throughout November the research team will fly over the park with a helicopter that will hoist a giant, hoop-shaped electromagnetic device that acts like an X-ray.

They want to peer beneath the earth’s surface to determine where and how water flows among geysers.

Lead scientist Carol Finn with the U.S. Geological Survey says the team also hopes to gain insights into the infrequent but sometimes massive hydrothermal explosions that occur in the park. A crater left by one of those explosions is several kilometers across.

Finn says similar work elsewhere in the U.S. has helped reveal hazards from volcanoes.

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