Results 1 to 10 of about 731 (132)

Feedback between megathrust earthquake cycle and plate convergence [PDF]

Scientific 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, Giampiero Iaffaldano, Andrés Tassara, Daniel Melnick   +3 more
doaj   +2 more sources

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

Geophysical 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
Kilian B Kemna, Gian Maria Bocchini, Armin Dielforder   +2 more
exaly   +2 more sources

Seismic rate variations prior to the 2010 Maule, Chile MW 8.8 giant megathrust earthquake [PDF]

Scientific Reports, 2021
The MW 8.8 Maule earthquake is the largest well-recorded megathrust earthquake reported in South America. It is known to have had very few foreshocks due to its locking degree, and a strong aftershock activity.
Benoit Derode, Raúl Madariaga, Jaime Campos   +2 more
doaj   +2 more sources

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

Geochemistry, 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 ...
Dapeng Zhao, Tao Gou, Zhouchuan Huang
exaly   +2 more sources

Electromagnetic imaging reveals insufficient fluids to explain shallow megathrust creep at the Shumagin Gap [PDF]

Nature Communications
The Shumagin Gap, a creeping segment of the Alaska subduction zone characterized by tsunamigenic structures, experienced a deep rupture during the July 2020 M7.8 earthquake.
Yinchu Li, Samer Naif, Kerry Key, Steven Constable, Rob L. Evans, Donna J. Shillington, Anne Bécel, Darcy Cordell   +7 more
doaj   +2 more sources

Evidence of megathrust earthquakes and seismic supercycles in subtropical Japan from millennia-old coral microatolls [PDF]

Nature Communications
Megathrust earthquakes in subduction zones often go unreported because they are rare and the historical record is short. On the Ryukyu subduction zone of southwestern Japan, unlike neighboring Nankai Trough, the history and future potential of great ...
Sophie Debaecker, Nathalie Feuillet, Kenji Satake, Kohki Sowa, Masaki Yamada, Tetsuro Sato, Mamoru Nakamura, Atsushi Watanabe, Ayaka Saiki, Jean-Marie Saurel, Giovanni Occhipinti, Tsai-Luen Yu, Chuan-Chou Shen   +12 more
doaj   +2 more sources

Structural barriers control the spatial extent of slow earthquake slip [PDF]

Nature Communications
Recent seismological and geodetic observations have revealed shallow slow earthquakes on subduction megathrusts, offering an opportunity to explore the factors controlling megathrust slip.
Takeshi Akuhara, Kazuya Shiraishi, Takeshi Tsuji, Yusuke Yamashita, Hiroko Sugioka, Atikul Haque Farazi, Shukei Ohyanagi, Yoshihiro Ito, Ryuta Arai, Eiichiro Araki, Gou Fujie, Yasuyuki Nakamura, Takashi Tonegawa, Ryosuke Azuma, Ryota Hino, Kimihiro Mochizuki, Shunsuke Takemura, Tomoaki Yamada, Masanao Shinohara   +18 more
doaj   +2 more sources

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

Frontiers 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, Yih-Min Wu, Yih-Min Wu, Yih-Min Wu, Yu-Chang Chan   +4 more
doaj   +1 more source

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

Oceanography, 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

High probability of successive occurrence of Nankai megathrust earthquakes

Scientific 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, Tomoaki Nishikawa, Yasuyuki Kano   +2 more
doaj   +1 more source