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Remarkable NASA photos show pumice raft floating at sea after underwater eruption near Tonga 美国宇航局的照片显示，汤加附近水下火山爆发后，浮石漂浮在海面上 A large raft of pumice is floating in the Pacific after an underwater volcanic eruption near Tonga earlier this month. 本月早些时候，汤加附近的一次水下火山爆发后，一大片浮石漂浮在太平洋上。 Within a week the raft was twice the size of New York's Manhattan. 不到一个星期，这片木筏的大小就变成了纽约曼哈顿的两倍。 Volcanologist with GNS Science Brad Scott said the eruption was noticed by cruising yachties north of Tonga around August 9. GNS科学研究所的火山学家布拉德斯科特说，8月9日左右，在汤加北部巡航的游艇上发现了这次喷发。
NASA reported sailors in the area described a 'rubble slick made up of rocks from marble to basketball size such that water was not visible,' as well as a smell of sulphur. 美国国家航空航天局报告说，该地区的水手们描述了一种“碎石浮油，由大理石到篮球大小的石块组成，看不见水了”，还闻到一股硫磺味。 Dr Scott said sailors first saw rising steam plumes and then noticed the large masses of floating pumice. 斯科特博士说，水手们先是看到上升的蒸汽柱，然后注意到大量漂浮的浮石。 'Quite commonly submarine volcanic eruptions produce pumice at the surface. It'll poor out the pumice from the active vent for, you know hours, or usually in the order of hours, maybe even days in extreme circumstances. 海底火山喷发通常在地表产生浮石。它会在几个小时内，或者通常在几个小时内，甚至在极端情况下的几天内，将浮石从活动的排气口排出。 'And they often are reported or can be seen from the satellites to be covering several square kilometres, to tens of square kilometres.' “它们经常被报道或从卫星上可以看到，覆盖面积从几平方公里到几十平方公里。” |
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