Deep Long‐Period Earthquakes Beneath Mount St. Helens: Their Relationship to Tidal Stress, Episodic Tremor and Slip, and Regular Earthquakes

2018 ◽  
Vol 45 (5) ◽  
pp. 2241-2247 ◽  
Author(s):  
Jiangang Han ◽  
John E. Vidale ◽  
Heidi Houston ◽  
David A. Schmidt ◽  
Kenneth C. Creager
Keyword(s):  
Long Period ◽  
Tidal Stress ◽  
Episodic Tremor And Slip ◽  
Episodic Tremor ◽  
Mount St Helens

scholarly journals Slab morphology in the Cascadia fore arc and its relation to episodic tremor and slip

2010 ◽  
Vol 115 ◽  
Author(s):  
Pascal Audet ◽  
Michael G. Bostock ◽  
Devin C. Boyarko ◽  
Michael R. Brudzinski ◽  
Richard M. Allen
Keyword(s):  
Episodic Tremor And Slip ◽  
Episodic Tremor

scholarly journals The source of infrasound associated with long‐period events at Mount St. Helens

2009 ◽  
Vol 114 (B4) ◽  
Author(s):  
Robin S. Matoza ◽  
Milton A. Garcés ◽  
Bernard A. Chouet ◽  
Luca D'Auria ◽  
Michael A. H. Hedlin ◽  
...  
Keyword(s):  
Long Period ◽  
Mount St Helens

scholarly journals Detection of Deep Low-frequency Earthquakes in the Nankai Subduction Zoneover 11 Years Usingamatched Filter Technique

2020 ◽  
Author(s):  
Aitaro Kato ◽  
Shigeki Nakagawa
Keyword(s):  
Matched Filter ◽  
Low Frequency ◽  
Slow Slip ◽  
Slow Slip Events ◽  
Filter Technique ◽  
Strike Direction ◽  
Episodic Tremor And Slip ◽  
Spatio Temporal ◽  
Episodic Tremor

Abstract To improve our understanding of the long-term behavior of low-frequency earthquakes (LFEs) along the tremor belt of the Nankai subduction zone, we applied a matched filter technique to continuous seismic data recorded by a dense and highly sensitive seismic network over an 11year window, April 2004 to August 2015. We detected a total of ~510,000 LFEs, or ~23× the number of LFEs in the JMA catalog for the same period. During long-term slow slip events (SSEs) in the Bungo Channel, a series of migrating LFEbursts intermittently occurred along the fault-strike direction, with slow hypocenter propagation. Elastic energy released by long-term SSEs appears to control the extent of LFE activity. We identify slowlymigrating fronts of LFEs during major episodic tremor and slip (ETS)events, which extend over distances of up to 100 km and follow diffusion-like patterns of spatial evolution with a diffusion coefficient of ~104 m2/s. This migration pattern closely matches the spatio-temporal evolution of tectonictremors reported by previous studies. At shorter distances, up to 15 km, we discovered rapid diffusion-like migrationof LFEs with a coefficient of ~105 m2/s. We also recognize that rapid migration of LFEs occurred intermittently in many streaks during major ETS episodes. These observations suggest that slow slip transients contain a multitude of smaller, temporally clustered fault slip events whose evolution is controlled by a diffusional process.

DO SMALL FAULTS IN THE BARABOO SYNCLINE PRESERVE EVIDENCE OF EPISODIC TREMOR AND SLIP (ETS)?

2018 ◽  
Author(s):  
Allison D. Jones ◽  
◽  
Laurel B. Goodwin ◽  
Philip E. Brown
Keyword(s):  
Episodic Tremor And Slip ◽  
Episodic Tremor
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