主题:关于汶川地震的MIT说法:2000年至万年一遇的怪地震 -- thacaos
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刚看到的《联合早报》的新闻。
美国地球科学家:汶川大地震是万年一遇“地震学怪事”
这20多年来,麻省理工学院研究队伍一直都在考察四川省周围地区,不过却从未发现任何大地震可能发生的迹象。因此,该研究队伍认为,今年5月12日在四川省发生的里氏7.9级地震(中国方面测定为8级地震)是意料之外的。
Google一下,英文版应是
China Earthquake Rare And Unexpected, Says New Study
A new analysis of the setting for last month's devastating earthquake in China by a team of geoscientists at MIT shows that the quake resulted from faults with little seismic activity, and that similar events in that area occur only once in every 2,000 to 10,000 years, on average.
Clark Burchfiel, Schlumberger Professor of Geology, and Leigh Royden, professor of geology and geophysics in the Department of Earth, Atmospheric and Planetary Sciences at MIT, have been doing extensive research in that region of China and the Tibetan plateau for more than two decades, but had found no hints that suggested such a large earthquake might strike the area.
The team operated an array of 25 broadband seismograph stations in this region of western Sichuan for more than a year. "Nobody was thinking there would be a major seismological event" in that area, Royden says. "This earthquake was quite unusual," and may have involved a simultaneous rupture of two separate but contiguous faults, she continued.
关键词(Tags): #汶川地震(喜欢),
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查查这个人就知道了
Nikola Tesla
复 难道真是地震武器
据说那地方地震多发区,历史上多次发生地震,好像前段时间“地震武器”这说法都被驳倒了吧,现在改头换面变成英文版又冒出来了
如果真是阴谋论,那日本地震,台湾地震又是谁发射的武器...
The team operated an array of 25 broadband seismograph stations in this region of western Sichuan for more than a year. "Nobody was thinking there would be a major seismological event" in that area, Royden says. "This earthquake was quite unusual,"
川西是个很大的范围,但原文也可以理解为小到川西的一个地质构造带上--龙门山地震带。
在离汶川相当近的距离上,30年代和70年代发生过7级以上大地震的地方叫松潘和平武,是一个紧邻龙门山地震带的另一个地震带,叫松潘地震带。松潘离北川特别近,但这次大地震它好象没什么事。
龙门山地震带有史以来最大的地震是1651年的6.5级地震,之后就未出现过6级以上地震(1965年有过一次5.3级地震,这是1651年至2008年5月12日之间地质史上的最高级数)。
川西这个地带,向北通往甘肃,向南通往云南,实际上构成中国最大、地震次数最多的一条地震带,叫南北地震带。它是包括龙门山地震带和松潘地震带在内的许多局域型地震带的总和。美国地质学家们不可能不知道这一点,因此我估计原文里的“this region”指的是龙门山区域。