Results 171 to 180 of about 231,836 (205)

Subslab heterogeneity and giant megathrust earthquakes

Nature Geoscience, 2021
The nucleation and rupture processes of giant megathrust earthquakes (M ≥ 9.0) in subduction zones are still controversial. Most previous studies have focused on the subducting plate interface, and the structure beneath the subducting slab and its influence on earthquake generation remain unclear.
Jianke Fan, Dapeng Zhao
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Silent Heralds of Megathrust Earthquakes?

Science, 2004
D uring an earthquake, rupture propagates along the fault plane within a few tens of seconds. Much slower rupture, lasting for weeks or months, has recently been observed in slip transients or slow earthquakes ([1][1], [2][2]).
Alfred Hirn, Mireille Laigle
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The super‐interseismic phase of the megathrust earthquake cycle in Chile [PDF]

Geophysical Research Letters, 2017
AbstractAlong a subduction zone, great megathrust earthquakes recur either after long seismic gaps lasting several decades to centuries or over much shorter periods lasting hours to a few years when cascading successions of earthquakes rupture nearby segments of the fault.
Daniel Melnick, Shaoyang Li, Javier Quinteros   +2 more
exaly   +4 more sources

Alaska megathrust 1: Seismicity 43 years after the great 1964 Alaska megathrust earthquake [PDF]

Journal of Geophysical Research: Solid Earth, 2013
AbstractThe largest moment release during the 1964 Mw 9.2 Alaska earthquake was on the portion of the megathrust under the eastern Kenai Peninsula and the Prince William Sound. The area is currently locked geodetically and corresponds to where the Yakutat terrane is subducting.
Younghee Kim, Geoffrey Abers
exaly   +2 more sources

Simple Physical Model for the Probability of a Subduction‐ Zone Earthquake Following Slow Slip Events and Earthquakes: Application to the Hikurangi Megathrust, New Zealand

Geophysical Research Letters, 2018
Slow slip events (SSEs) have been documented in subduction zones worldwide, yet their implications for future earthquake occurrence are not well understood.
Laura Wallace, Yoshihiro Kaneko, Ian Hamling   +2 more
exaly   +2 more sources

Triggering of earthquake swarms following the 2011 Tohoku megathrust earthquake

Journal of Geophysical Research: Solid Earth, 2015
AbstractEarthquake swarms, often interpreted to result from fluids invading the brittle seismogenic zone, have seismicity patterns that are significantly different from an aftershock sequence. Following the Mw 9.0 Tohoku‐Oki earthquake, an unusual, shallow normal‐faulting swarm sequence occurred near the Pacific coast in the southeast Tohoku district ...
Koji Umeda, Koichi Asamori, Ayumu Makuuchi, Kazuo Kobori, Yuki Hama   +4 more
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Structural heterogeneity and megathrust earthquakes in Southwest Japan

Physics of the Earth and Planetary Interiors, 2020
Abstract Large interplate megathrust earthquakes occurred in the Nankai subduction zone off Southwest Japan with an interval of ~100 to 150 years. Because of a fast convergence rate (4–6 cm/yr) and a young buoyant lithosphere, the subducting Philippine Sea plate and the overriding Eurasian plate are strongly coupled in the forearc region along the ...
Xiongwei Niu, Dapeng Zhao, Yukio Isozaki, Yukihisa Nishizono, Hirohito Inakura   +4 more
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A Spatial and Economic Analysis of Megathrust Earthquakes

2017
The Great East Japan Earthquake, which struck on March 11, 2011, had a massive economic impact, primarily on the affected areas in Japan. The Indian Ocean Tsunami hit Aceh and Nias, Indonesia, on December 26, 2004 and destroyed life and infrastructure within 10 km of the coastline in north and western Aceh.
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Moment tensors for rapid characterization of megathrust earthquakes

2013
The rapid detection and characterization of megathrust earthquakes is a difficult task given their large rupture zone and duration. These events produce very strong ground vibrations in the near field that can cause weak motion instruments to clip, and they are also capable of generating large-scale tsunamis.
Guilhem, Aurélie, Dreger, Douglas S., Tsuruoka, Hiroshi, Kawakatsu, Hitoshi   +3 more
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An NEG Analysis of Megathrust Earthquakes in Japan

2017
This chapter investigates the impact of megathrust earthquakes on Japanese regional structure. Even after the Great East Japan Earthquake in 2011, there are serious concerns about predicted earthquakes in the near future; for instance, Tokyo Metropolitan Area (M.
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