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Hunting for Hydrothermal Vents Along the Galapagos Spreading Center

机译:在加拉帕戈斯群岛传播中心寻找热液喷口

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摘要

In 1972, at a location in the eastern equatorial Pacific ~ 200 miles northeast of the Galapagos Islands, a young graduate student researcher was using surplus US Navy sonobuoys to listen to the portion of the global mid-ocean ridge known as the Galapagos Spreading Center (GSC) (Figure 1). The global mid-ocean ridge is a giant volcanic seam where Earth's lithospheric plates repeatedly rip apart and erupt lava to form new seafloor in a process known as seafloor spreading. Ken Macdonald was listening for the sounds of ripping and volcanic eruptions produced by seafloor spreading, and he was quite excited when he heard a swarm of such sounds (80 earthquakes per hour!) through his headphones.
机译:1972年,在赤道东太平洋至加拉帕戈斯群岛东北200英里处,一位年轻的研究生研究员正在利用多余的美国海军声纳浮标来收听全球中洋海岭被称为加拉帕戈斯传播中心( GSC)(图1)。全球海洋中脊是一个巨大的火山缝,地球岩石圈板块反复裂开并喷发熔岩,形成新的海底,这一过程被称为海底扩散。肯·麦克唐纳(Ken Macdonald)正在听海底传播所产生的撕裂声和火山喷发的声音,当他通过耳机听到大量这样的声音(每小时80次地震!)时,他感到非常兴奋。

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