Episodic tremor and slip
Episodic tremor and slip
复制标题
阵发性震颤和滑倒
DOI：
10.4095/289533
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发表时间：
2010
影响因子：
2.9
通讯作者：
Geowissenschaften
中科院分区：
文献类型：
--
作者：
Geowissenschaften
第 1 页 • w w w。地球镜。 2002 年，科学家发现太平洋西北地区的构造板块正在以神秘的方式移动：板块的某些部分每 10 到 20 个月就会轻轻移动几厘米，并释放出微弱的地震颤动。研究人员将这种现象称为“阵发性震颤和滑动”，其释放的能量相当于 7.0 级地震。但是，由于能量在一到两周的时间内释放，所以没有人感觉到板块相互滑过时的颤抖。科学家们现在正在竞相了解地壳中如何以及为何会发生地震和滑动，以及它是否与大地震有关。
pag e 1 • w w w. e a r t h s c o p e . o r g In 2002, ScIEnTISTS dIScovErEd ThaT TEcTonIc plates in the Pacific Northwest are moving in mysterious ways: Sections of the plates are gently shifting a few centimeters every 10 to 20 months and releasing a weak seismic tremor. Episodic Tremor and Slip—as the researchers dubbed the phenomenon—can release the same amount of energy as a magnitude 7.0 earthquake. But, because the energy releases over a oneto twoweek period, no one feels the quivering of plates slipping past each other. Scientists are now racing to understand how and why tremor and slip occurs in the Earth’s crust and if it is related to big earthquakes.