How a seal and a robot helped uncover a potential climate change disaster
point of them all, about the depth of two Grand Canyons, or two miles below sea level. If water, rather than ice, were to someday fill this valley, Denman Glacier could raise global sea levels by nearly 5 feet.something else: Denman was reeling. The region of its “grounding line,” where the glacier touches both the seafloor and the ocean, had retreated backward more than three miles toward the center of Antarctica since 1996, bringing the sea to edge of the newly discovered canyon.
The robot was a little more thorough in its explorations than the seal. It also measured water that was even warmer at very, very close to zero degrees Celsius. Thanks to these measurements, the scientists were able to determine just how much of this warm water is flowing toward Denman Glacier. It was massive.There are “about eight Mississippi Rivers going into the cavity,” according to Rintoul.
While East Antarctica has so far not been losing much, if any, ice, it has much more to potentially give than any other Antarctic region. Like these West Antarctic glaciers,
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