Fault strength and rupture process controlled by fault surface topography

S Xu, E Fukuyama, F Yamashita, H Kawakata… - Nature …, 2023 - nature.com
Faults are rarely completely smooth, with topographic undulations coming from the
distribution of asperities along the fault surface. Understanding the effects of fault surface …

The 2021 Mw 7.3 Madoi, China earthquake: Transient supershear ruptures on a presumed immature strike‐slip fault

C Cheng, D Wang, Q Yao, L Fang, S Xu… - Journal of …, 2023 - Wiley Online Library
We used seismic data recorded at local and teleseismic distances to analyze the May 22,
2021 Mw 7.3 Madoi, China earthquake sequence, which occurred along a low‐slip‐rate (0.3 …

[HTML][HTML] Strain rate effect on fault slip and rupture evolution: Insight from meter-scale rock friction experiments

S Xu, E Fukuyama, F Yamashita, K Mizoguchi… - Tectonophysics, 2018 - Elsevier
We conduct meter-scale rock friction experiments to study strain rate effect on fault slip and
rupture evolution. Two rock samples made of Indian metagabbro, with a nominal contact …

Laboratory earthquakes decipher control and stability of rupture speeds

P Dong, K Xia, Y Xu, D Elsworth, JP Ampuero - Nature communications, 2023 - nature.com
Earthquakes are destructive natural hazards with damage capacity dictated by rupture
speeds. Traditional dynamic rupture models predict that earthquake ruptures gradually …

Two end-member earthquake preparations illuminated by foreshock activity on a meter-scale laboratory fault

F Yamashita, E Fukuyama, S Xu, H Kawakata… - Nature …, 2021 - nature.com
The preparation process of natural earthquakes is still difficult to quantify and remains a
subject of debate even with modern observational techniques. Here, we show that foreshock …

Nucleation of stick‐slip instability within a large‐scale experimental fault: Effects of stress heterogeneities due to loading and gouge layer compaction

L Buijze, Y Guo, AR Niemeijer, S Ma… - Journal of Geophysical …, 2020 - Wiley Online Library
Geodetic observations and large‐scale laboratory experiments show that seismic instability
is preceded by slow slip within a finite nucleation zone. In laboratory experiments rupture …

Theoretical constraints on dynamic pulverization of fault zone rocks

S Xu, Y Ben-Zion - Geophysical Journal International, 2017 - academic.oup.com
We discuss dynamic rupture results aiming to elucidate the generation mechanism of
pulverized fault zone rocks (PFZR) observed in 100–200 m wide belts distributed …

Dynamic fault weakening during earthquakes: Rupture or friction?

X Chen, SS Chitta, X Zu, Z Reches - Earth and Planetary Science Letters, 2021 - Elsevier
An earthquake is an event of dynamic, unstable slip that releases elastic energy stored in
the earth's crust. This abrupt energy release requires the weakening of the slipping fault that …

Mechanisms of rockburst triggered by slip and fracture of coal–parting–coal structure discontinuities

CP Lu, GJ Liu, Y Liu, H Zhang - Rock Mechanics and Rock Engineering, 2019 - Springer
The existence of parting in coal can contribute to unstable slip and shear failure, and even
rockburst of mining faces and sidewalls. In this work, the rockburst triggered by the slip and …

Fracture energy estimates from large-scale laboratory earthquakes

DS Kammer, GC McLaskey - Earth and Planetary Science Letters, 2019 - Elsevier
The dynamics of fault ruptures in natural and laboratory earthquakes is governed by a
balance of released elastic energy and dissipated local fracture energy. The latter is the …