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南极冰层下再现91座火山 或成全球最大火山带

2017-08-14 13:57:57   国际在线

中新网8月14日电 据香港《文汇报》报道,英国爱丁堡大学的研究人员近期在南极洲西部的冰层下发现91座火山,连同早前已发现的47座,南极火山带或为全球最大的火山带,超过目前所知最大的东非火山脊。

据报道,在过去一世纪,南极发现47座火山,尖端均位于冰层之上。爱丁堡大学研究团队进一步勘测,在冰层下再发现91座火山,高度由100米至3850米不等,多数位于冰层以下2公里处。

研究人员称,南极洲西部可能成为未来几年活火山的热点地区。

据悉,火山带长达3500公里,从南极洲的罗斯冰架一直延伸至南极半岛。研究员怀疑罗斯冰架的海床还有更多火山,极可能是全球火山最密集的区域。

报道指出,南极冰层受全球暖化影响而融化,导致海平面上升。冰川专家宾厄姆警告,若其中一座火山爆发,将令南极冰层进一步不稳定,导致冰层融化,加快冰块流入海洋的速度。

(原标题:南极冰层下再现91座火山 或成全球最大火山带)

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