本帖最后由 人与自然 于 2012-6-2 00:15 编辑
来源:http://www.boston.com/bigpicture/2009/03/undersea_eruptions_near_tonga.html
据新西兰媒体2009年3月19日报道,南太平洋岛国汤加海域一海底火山爆发,海域上空弥漫着大量硝烟和蒸汽,火山灰直冲高空。新西兰气象局发出警告,要求途经该海域上空的航班小心谨慎,避免发生事故。新西兰航空公司发言人说,火山灰及烟雾已迫使该公司航班绕开此区域。据悉,由于无法被飞机气象雷达检测到,火山灰容易引起发动机故障。当地government称,该火山爆发没有给居民带来威胁。但尚不清楚对鱼类和其它动物是否有影响。该火山位于汤加主岛汤加塔布岛西南海岸约10公里处,从16日开始爆发。该海域是火山聚集区,海底火山多达36个。
汤加王国位置
汤加王国在澳洲东边
Scientists sailed out to have a closer look at the eruptions of an undersea volcano off the coast of Tonga in the South Pacific Ocean today. Tonga's head geologist, Kelepi Mafi, said there was no apparent danger to residents of Nuku'alofa and others living on the main island of Tongatapu. Officials also said it may be related to a quake with a magnitude of 4.4 which struck last March 13 around 35 kilometers from the capital at a depth of nearly 150 kilometres. (I know this is an off-day posting, but really, thought the images were worth it - 12 photos total)
科学家们驾船靠近仔细观察南太平洋岛国汤加的海底火山。汤加首席地质科学家Kelepi Mafi说,没有明显的迹象表明,火山将给的首都努库阿洛法和其他生活在主岛汤加塔布岛的居民带来危险。
该火山位于汤加主岛汤加塔布岛(Tongatapu)海岸外约10公里处。火山自星期一就已经开始爆发,但努库阿洛法的居民是在两天前才发现火山所冒出的滚滚浓烟。当局表示,火山爆发可能是和上周五的地震有关联。当天的4.4级地震在距离首都35公里、约150公里深的地底下发生。
据了解,海底火山爆发的地方曾在2002年形成一个小岛。但该小岛在几周后就消失了。地质学家表示,这次的火山爆发,其规模比2002年的还要大。他们也发现,该火山似乎有两个不同的火山口,但这还有待确定。
An undersea volcano erupts off the coast of Tonga, sending plumes of steam, ash and smoke up to 100 meters into the air, on March 18, 2009, off the coast of Nuku'Alofa, Tonga. (Dana Stephenson/Getty Images)
汤加海岸边的海底火山,蒸汽和火山灰等喷射到100米高度。
2
An undersea volcano erupts off the coast of Tonga, tossing clouds of smoke, steam and ash thousands of meters into the sky above the South Pacific ocean, Tuesday, March 17, 2009. The eruption was at sea about 10 kilometers from the southwest coast of the main island of Tongatapu, an area where up to 36 undersea volcanoes are clustered. (AP Photo/Trevor Gregory) #
海底火山爆发,把火山灰、蒸汽、烟雾抛入数千米高空
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