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机译:已知的未知数

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摘要

The Izu-Bonin-Mariana (IBM) arc-trench system in the western Pacific Ocean was created from the subduction of the Pacific plate, which began some 51 million years ago and continues today. The IBM is home to the deepest known point in the ocean, the Mariana Trench, which reaches a known depth of 10,994m (± 40m) in its famous Challenger Deep. Although recent efforts focus on marine life, early explorations of the trench concentrated on determining its depth. When on 23 January 1960 Swiss engineer Jacques Piccard and US Navy submariner Captain Don Walsh took the first manned vessel -the bathyscaphe Trieste- down the Challenger Deep to 10,911m (35,797ft), they were uncertain as to whether they would return to the surface alive (they did). What they saw down there surprised and delighted them...
机译:西太平洋的Izu-Bonin-Mariana(IBM)Arc-Trench系统是由太平洋板块的俯冲创建的,太平洋板块开始于大约5100万年前,今天持续了。 IBM是海洋中最深层的玛丽安娜(Mariana Trench)的所在地,在其著名的挑战者深处达到了已知的10,9.94亿(±40m)的深度。 尽管最近的努力集中在海洋生物上,但对沟渠的早期探索集中在确定其深度上。 1960年1月23日,瑞士工程师雅克·皮卡德(Jacques Piccard)和美国海军上尉唐·沃尔什(Don Walsh)上尉登上了第一艘载人的船只 - 挑战者的沐浴者三角船,达到1009.11亿(35,797英尺),他们是否不确定他们是否会返回地表 活着(他们做到了)。 他们在那里看到的东西使他们感到惊讶和高兴...

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