Tremor along the Dead Sea Transform remotely triggered by the 2023 MW7.6 Kahramanmaraş earthquake

被引:0
|
作者
Inbal, Asaf [1 ]
机构
[1] Tel Aviv Univ, Dept Geophys, Tel Aviv, Israel
来源
COMMUNICATIONS EARTH & ENVIRONMENT | 2024年 / 5卷 / 01期
基金
以色列科学基金会;
关键词
SAN-JACINTO FAULT; NON-VOLCANIC TREMOR; SCALING LAW; SLIP; FREQUENCY; FRICTION; ANZA; INSTABILITY; STABILITY;
D O I
10.1038/s43247-024-01266-1
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Tremor signals are weak and emergent, and the physics governing their generation is not well understood. Here, I report on tremor occurring along the Dead Sea Transform (DST), and a microearthquake on the Carmel-Fari'a Fault (CFF), both remotely triggered by the 2023 M(W)7.6 Kahramanmaras earthquake. The triggered events location coincides with maxima of long-period velocity gradients, concentrated in the CFF-DST intersection and near a CFF fault-jump. Relative to other remotely triggered tremors, the DST tremor is strong and deficient in high-frequency seismic energy. Furthermore, analysis of several remotely triggered tremor episodes suggests that tremors spectral fall-off rates are not universal. I discuss the seismological attributes that may give rise to these observations in the context of two models. In the first, tremor is produced due to inertial vibrations of a frictionally-controlled oscillator, and in the second it is produced by a swarm of Low-Frequency Earthquakes.
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页数:10
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