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目前已钻600多米 人类将首次打穿地球地壳 - 站长搜索
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目前已钻600多米 人类将首次打穿地球地壳

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2016-01-18 11:18:22 转载来源: 网络整理/侵权必删

16日夜晚,美国、英国、中国等12国科学家参加的大洋钻探旨在打穿地球壳幔边界,过程十分艰难。进入400米后,随着钻孔越钻越深,钻孔故障频发,已损坏了3个钻头

16日夜晚,美国、英国、中国等12国科学家参加的大洋钻探旨在打穿地球壳幔边界,过程十分艰难。进入400米后,随着钻孔越钻越深,钻孔故障频发,已损坏了3个钻头。为了尽快越过故障多发地带,“决心”号采用了力量更大的三牙轮钻头连续向下钻进而不取芯。目前钻孔深度已突破600米,并恢复了正常取芯。

人类将首次打穿地球地壳:目前已钻600多米

去年12月初,美国、英国、中国等12个国家的30名科学家已登上美国“决心”号钻探船,准备在西南印度洋开展打穿地球壳幔边界的第一次大洋钻探。打超深钻井,钻穿地壳,直接“触摸”到地壳与地幔的边界,这是全世界地球科学家的理想。

这是国际大洋发现计划的第360航次,也是名为“SloMo”计划的第一个航次。“SloMo”是“慢速扩张脊下地壳和莫霍面的性质”缩写。该计划致力于在人类历史上首次钻穿壳幔边界,以检验“在慢速、超慢速扩张脊下方的莫霍面代表了地幔的蚀变边界”的假说。中国科学院地质与地球物理研究所刘传周研究员、同济大学海洋地质国家重点实验室周怀阳教授、课题组成员马强博士等人全程参加。

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