直升机如何帮助我们确定南极洲海洋的健康状况?

Yoshihiro Nakayama, Pat Wongpan, J. Greenbaum, Kaihe Yamazaki, Shigeru Aoki
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摘要

在南极洲东部,温暖的海水流向托滕冰架。这些水使冰架融化变薄,加快了冰入海的速度,导致海平面上升。科学家们经常登上名为 "破冰船 "的船只,研究这些地区的冰和水。然而,海冰和冰山是航行和科学作业的主要障碍。例如,美国、澳大利亚和日本的破冰船尝试过,但只能观察到海冰比较破碎的一小块区域。因此,我们在一次研究考察中使用直升机测量海洋。直升机比破冰船飞得更快。它们可以飞越海冰和冰山,训练有素的工作人员可以将传感器投放到冰层的小缝隙中。在 6 天内,我们在 67 个地点观测了海洋温度,覆盖了以前无法研究的大片区域。我们发现了温水流向托滕冰架的广泛路径。
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How Can Helicopters Help Us Determine the Health of Antarctica’s Oceans?
In East Antarctica, warm ocean water travels toward the Totten Ice Shelf. This water melts and thins the ice shelf, and speeds up the rate at which ice moves into the sea, leading to sea-level rise. Scientists often get on board ships called icebreakers to study the ice and water in these regions. However, sea ice and icebergs are major obstacles to navigation and scientific operations. For example, American, Australian, and Japanese icebreakers tried but could only observe a small area where sea ice was more broken up. So, we used a helicopter to measure the ocean during one of our research expeditions. Helicopters can travel faster than icebreakers. They can fly over sea ice and icebergs, and trained workers can drop sensors into small gaps in the ice. In 6 days, we observed ocean temperatures at 67 sites, covering a large area that could not be studied before. We identified wide pathways of warm water flowing toward the Totten Ice Shelf.
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