Results 1 to 10 of about 1,235 (207)

Feedback between megathrust earthquake cycle and plate convergence [PDF]

open access: yesScientific Reports, 2023
Over million years, convergence between the Nazca and South America tectonic plates results in Andean orogeny. Over decades/centuries, it fuels the earthquake cycle of the Andean megathrust.
Juan Martin de Blas   +3 more
doaj   +9 more sources

Structural Heterogeneity in Source Zones of the 2018 Anchorage Intraslab Earthquake and the 1964 Alaska Megathrust Earthquake

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Structural heterogeneities in subduction zones can affect slip behaviors of the megathrust faults and the generation of intraslab earthquakes. In this work we study the 3‐D seismic structures (Vp, Vs, and Poisson's ratio) in and around the source zones ...
Tao Gou, Dapeng Zhao, Zhouchuan Huang
exaly   +3 more sources

Coulomb stress change on inland faults during megathrust earthquake cycle in southwest Japan [PDF]

open access: yesEarth, Planets and Space, 2020
In the subduction zone, megathrust earthquakes may modulate the shallow crustal seismicity in the overriding plate. Historical documents indicate the frequent occurrence of large shallow crustal earthquakes in the overriding continental plate 50 years ...
Tsukasa Mitogawa, Takuya Nishimura
doaj   +2 more sources

High probability of successive occurrence of Nankai megathrust earthquakes

open access: yesScientific Reports, 2023
Great earthquakes along the Nankai megathrust in south-western Japan feature in the top priority list of Japan’s disaster management agenda. In May 2019, an alert system was incepted to issue public warnings when the probability of an earthquake ...
Yo Fukushima   +2 more
doaj   +3 more sources

Megathrust Stress Drop as Trigger of Aftershock Seismicity: Insights From the 2011 Tohoku Earthquake, Japan

open access: yesGeophysical Research Letters, 2023
Numerous normal‐faulting aftershocks in subduction forearcs commonly follow large megathrust earthquakes. Postseismic normal faulting has been explained by stress changes induced by the stress drop along the megathrust. However, details of forearc stress
Armin Dielforder   +2 more
exaly   +2 more sources

The super‐interseismic phase of the megathrust earthquake cycle in Chile [PDF]

open access: yesGeophysical 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   +2 more
exaly   +4 more sources

The Seismogenic Potential of the Southernmost Ryukyu Subduction Zone as Revealed by Historical Earthquakes and Slow Slip events

open access: yesFrontiers in Earth Science, 2022
The southernmost Ryukyu subduction zone may have a geodetically inferred Mw 7.5 to 8.7 megathrust earthquake in a shallow locked region, the Ryukyu fault.
Sean Kuanhsiang Chen   +4 more
doaj   +1 more source

DONET: A Real-Time Monitoring System for Megathrust Earthquakes and Tsunamis Around Southwestern Japan [PDF]

open access: yesOceanography, 2014
DONET (Dense Ocean floor Network for Earthquakes and Tsunamis; https://www.jamstec.go.jp/donet/e/index.html) is a cabled seafloor observatory that monitors the Nankai and Tōnankai seismogenic zones, offshore southwestern Japan, in real time. In 1944, two
Yoshiyuki Kaneda
doaj   +1 more source

Mega-earthquakes rupture flat megathrusts [PDF]

open access: yesScience, 2016
Mega-earthquakes go the flat way Megathrust faults in subduction zones cause large and damaging earthquakes. Bletery et al. argue that certain geometric features of the subduction zones relate to earthquake size. The key parameter is the curvature of the megathrust.
Bletery, Q.   +5 more
openaire   +3 more sources

Nucleation process of the 2011 northern Nagano earthquake from nearby seismic observations

open access: yesScientific Reports, 2021
The 2011 magnitude (M) 9.0 Tohoku-oki earthquake was followed by seismicity activation in inland areas throughout Japan. An outstanding case is the M6.2 Northern Nagano earthquake, central Japan, occurred 13-h after the megathrust event, approximately ...
Kengo Shimojo   +3 more
doaj   +1 more source

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