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:
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复制
发表时间:
2016
期刊:
影响因子:
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通讯作者:
W. Phillips
中科院分区:
文献类型:
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作者:
S. Bilek;H. Rotman;W. Phillips
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.
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
影响因子:
2.8
作者:
Dinc, A. Nilay;Rabbel, Wolfgang;Taylor, Waldo
通讯作者:
Taylor, Waldo