Low stress drop earthquakes in the rupture zone of the 1992 Nicaragua tsunami earthquake

Low stress drop earthquakes in the rupture zone of the 1992 Nicaragua tsunami earthquake
复制标题

1992年尼加拉瓜海啸地震破裂带的低应力降地震

DOI:
--
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
W. Phillips
W. Phillips
中科院分区:
--
文献类型:
--
作者:
S. Bilek;H. Rotman;W. Phillips

文献摘要

参考文献

被引文献

相似文献

海啸地震是产生比预期海啸更大且缺乏高频地震辐射的事件,虽然罕见,但对沿海人口有害。这些事件的一种模型是低强度材料的浅层破裂。我们计算了 1992 年尼加拉瓜海啸地震破裂带内外的 216 次地震(2.1 < Mw < 4.7,2005 年 11 月至 2006 年 6 月)的地震矩、角频率和应力降,以检验以下假设:断层带特性的差异定义了 1992 年海啸破裂带的极限,并继续产生震源特性的空间变化。破裂区内事件的平均应力降为 1.2MPa,破裂区外事件的平均应力降为 5.5MPa,每组地震震级相似。我们的结果证明了过去海啸地震地区微震活动的不同震源参数特征。
Tsunami earthquakes, events that generate larger than expected tsunami and are deficient in high‐frequency seismic radiation, are rare but hazardous to coastal populations. One model for these events is shallow rupture through low‐strength materials. We calculate seismic moment, corner frequency, and stress drop for 216 earthquakes (2.1 < Mw < 4.7, November 2005 to June 2006) within and external to the 1992 Nicaragua tsunami earthquake rupture zone to test the hypothesis that differences in fault zone properties defined the limits of the 1992 tsunami rupture zone and continue to produce spatial variations in earthquake source properties. Mean stress drop of events within the rupture area is 1.2 MPa, and 5.5 MPa for events just outside of the rupture zone, with similar magnitude earthquakes in each group. Our results demonstrate different source parameter characteristics for microseismicity in the region of a past tsunami earthquake.
DOI: 10.1093/gji/ggt309
发表时间: 2013-11
影响因子: 2.8
作者:
N. Harmon;M. S. D. L. Cruz;C. Rychert;G. Abers;K. Fischer
通讯作者: N. Harmon;M. S. D. L. Cruz;C. Rychert;G. Abers;K. Fischer
DOI: 10.1111/j.1365-246x.2011.05041.x
发表时间: 2011-07-01
影响因子: 2.8
作者:
Dinc, A. Nilay;Rabbel, Wolfgang;Taylor, Waldo
通讯作者: Taylor, Waldo