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Observing and Modeling the Spectrum of a Slow Slip Event [PDF]
Journal of Geophysical Research: Solid Earth, 2018 AbstractWe estimate and model the normalized moment rate power spectrum of large slow slip events in Cascadia. We estimate the spectrum using data from GPS‐derived slip inversions, borehole strain records, and beamforming‐based tremor amplitudes. The normalized power spectrum initially decreases with frequency but then may flatten at periods of 1 to 10
Jessica C Hawthorne, N M Bartlow
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Slow Earthquakes Coincident with Episodic Tremors and Slow Slip Events
Science, 2007We report on the very-low-frequency earthquakes occurring in the transition zone of the subducting plate interface along the Nankai subduction zone in southwest Japan. Seismic waves generated by very-low-frequency earthquakes with seismic moment magnitudes of 3.1 to 3.5 predominantly show a long period of about 20 seconds.
Yoshihiro, Ito +4 more
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Ultralow frictional healing explains recurring slow slip events
Science, 2023Plate motion on shallow subduction megathrusts is accommodated by a spectrum of tectonic slip modes. However, the frictional properties and conditions that sustain these diverse slip behaviors remain enigmatic. Frictional healing is one such property, which describes the degree of fault restrengthening between earthquakes.
Srisharan Shreedharan +3 more
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Slow Slip Events in New Zealand
Annual Review of Earth and Planetary Sciences, 2020Continuously operating global positioning system sites in the North Island of New Zealand have revealed a diverse range of slow motion earthquakes on the Hikurangi subduction zone. These slow slip events (SSEs) exhibit diverse characteristics, from shallow (<15 km), short (<1 month), frequent (every 1–2 years) events in the northern part of the ...
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A slow slip event triggered by teleseismic surface waves [PDF]
Geophysical Research Letters, 2011 Satoshi Itaba, Ryosuke Ando
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Slow slip events along the North Anatolian Fault
2021<p>While some faults remain locked for tens to hundreds of years, some active faults slip slowly, either continuously or episodically. The discovery of slow, generally silent, slip at the turn of the century led to a profound modification of our understanding of the mechanics of faulting, shedding light on the dynamics of fault slip. Such
Romain Jolivet +10 more
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Record by quartz veins of earthquakes and slow slip events
2020<p>Veins that form contemporaneously with deformation are the best recorders of the fluids circulating in the depths of orogenic and subduction zones. We have analyzed syn-kinematic quartz veins from accretionary prisms (Shimanto Belt in Japan, Kodiak accretionary prism in Alaska) and tectonic nappes in collisional orogens ...
Hugues Raimbourg +5 more
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The source scaling of swarm-genic slow slip events
2020<p>Slow slip events (SSEs) are slow fault ruptures that do not excite detectable seismic waves although they are often accompanied by some forms of seismic strain release, e.g., clusters of low- and very-low frequency earthquakes, and/or episodic or continuous non-volcanic tremor (i.e.
Luigi Passarelli +3 more
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Fault-valve instability: A mechanism for slow slip events
Journal of Geophysical Research: Solid EarthAbstractGeophysical and geological studies provide evidence for cyclic changes in fault‐zone pore fluid pressure that synchronize with or at least modulate slip events. A hypothesized explanation is fault valving arising from temporal changes in fault zone permeability.
So Ozawa, Yuyun Yang, Eric M Dunham
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Episodic slow slip events and rate‐and‐state friction
Journal of Geophysical Research: Solid Earth, 2008There are several ways of generating episodic slow slip events in models of rate‐and‐state friction. Here I explore the possibility that they arise on velocity‐weakening faults whose length is “tuned” in some sense. Unlike spring‐block sliders, which have a unique critical stiffness for instability, elastically deformable faults have multiple length ...
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