Academic
Publications
An integrated perspective of the continuum between earthquakes and slow-slip phenomena

An integrated perspective of the continuum between earthquakes and slow-slip phenomena,10.1038/ngeo940,Nature Geoscience,Zhigang Peng,Joan Gomberg

An integrated perspective of the continuum between earthquakes and slow-slip phenomena   (Citations: 16)
BibTex | RIS | RefWorks Download
The discovery of slow-slip phenomena has revolutionized our understanding of how faults accommodate relative plate motions. Faults were previously thought to relieve stress either through continuous aseismic sliding, or as earthquakes resulting from instantaneous failure of locked faults. In contrast, slow-slip events proceed so slowly that slip is limited and only low-frequency (or no) seismic waves radiate. We find that slow-slip phenomena are not unique to the depths (tens of kilometres) of subduction zone plate interfaces. They occur on faults in many settings, at numerous scales and owing to various loading processes, including landslides and glaciers. Taken together, the observations indicate that slowly slipping fault surfaces relax most of the accrued stresses through aseismic slip. Aseismic motion can trigger more rapid slip elsewhere on the fault that is sufficiently fast to generate seismic waves. The resulting radiation has characteristics ranging from those indicative of slow but seismic slip, to those typical of earthquakes. The mode of seismic slip depends on the inherent characteristics of the fault, such as the frictional properties. Slow-slip events have previously been classified as a distinct mode of fault slip compared with that seen in earthquakes. We conclude that instead, slip modes span a continuum and are of common occurrence.
Journal: Nature Geoscience - NAT GEOSCI , vol. 3, no. 9, pp. 599-607, 2010
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...[2] Recent studies have shown that large earthquakes are capable of triggering microearthquakes and deep non‐ volcanic tremor at distances up to thousands of kilometers [Hill and Prejean, 2007; Peng and Gomberg, 2010, and references therein]...

    Zhigang Penget al. Delayed triggering of microearthquakes by multiple surface waves circl...

    • ...The spectral characteristics of NVT contain important information about the physical fault processes controlling episodic tremor and slip (ETS) and shed light on the manifestations of seismic slip from slow events to mega earthquakes [Peng and Gomberg, 2010; Beroza and Ide, 2011]...

    Jian Zhanget al. Cascadia tremor spectra: Low corner frequencies and earthquake-like hi...

    • ...In order to reveal the source physics of various interplate slip phenomena, it is important to understand the relationship among members of slow earthquakes [e.g., Peng and Gomberg, 2010; Obara, 2010]...

    Takeshi Kimuraet al. Automated detection of slow slip events within the Nankai subduction z...

    • ...[2] Episodic tremor and slip (ETS) [Dragert et al., 2001; Obara, 2002], which is marked by tremor, and also by observable slow slip when the episode is sufficiently long lived, displays slip with a broad spectrum of time scales [e.g., Ghosh et al., 2010a, 2010b] accommodating low‐stress, slow slip on many major faults [Peng and Gomberg, 2010]...
    • ...Earthquakes trigger earthquakes, both by static stressing [e.g., Cochran et al., 2004; Stein, 1999] and dynamic stressing from seismicwaves[e.g.,HillandPrejean,2007].Studiesalso document that seismic waves trigger tremor [Peng and Gomberg, 2010; Rubinstein et al., 2009]...
    • ...Alternatively, the slow slip event engenders slab pull on the updip region, which would encourage normal faulting, which is the dominant focal mechanism of intraslab activity [GreenandHouston,1995].Athirdfactoris that slow slip tends to concentrate at shallower depths than tremor for ETS episodes, so perhaps the earthquakes are really centered around the slow slip [Peng and Gomberg, 2010]...

    John E. Vidaleet al. Tiny intraplate earthquakes triggered by nearby episodic tremor and sl...

    • ... Fault creep has been shown to trigger earthquake...

    Zhigang Penget al. Triggered creep as a possible mechanism for delayed dynamic triggering...

Sort by: