Article
Multidisciplinary Sciences
Robert T. O'Malley, Ayush Choudhury, Yue Zhang
Summary: Recent research has shown that large earthquakes can trigger other large earthquakes at remote locations, indicating that fault systems may be reaching the end of their seismic cycles. A new method has been developed to assess the susceptibility of a given area to such remote triggering based on local earthquake history. The method was applied to all plate boundaries, revealing that only 14% of global tectonic boundaries are not susceptible to remote triggering, while 86% show varying degrees of susceptibility. The most highly susceptible locations exhibit triggering at lower magnitude earthquakes, depending on the type of plate boundary. Intriguingly, different patterns of susceptibility to remote triggering were observed around individual plates, with the Cocos Plate showing particularly high susceptibility that aligns with its natural frequencies.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Geological
Babak Mahmoodi, Aaron P. Gallant, H. Benjamin Mason
Summary: Tsunamis are a significant coastal hazard that can induce liquefaction and erosion, threatening the stability of natural and built infrastructure. The pressure of pore water is influenced by the mechanical action of soil and seepage of tsunami water. Previous research often overlooked the presence of air in sediment and the interaction between saturated sediment and entrained air.
Article
Energy & Fuels
Kyungjae Im, Jean-Philippe Avouac
Summary: Surface deformation and earthquake swarms are correlated in space and time with operations at the Brawley geothermal field in southern California. The seismicity, culminating in a M5.4 earthquake in 2012, may have been triggered by aseismic slip on a normal fault near the reservoir.
Article
Multidisciplinary Sciences
Andrew F. Bell, Stephen Hernandez, John McCloskey, Mario Ruiz, Peter C. LaFemina, Christopher J. Bean, Martin Moellhoff
Summary: The intensity of dynamically triggered earthquakes at Sierra Negra volcano increased as inflation of a magma reservoir elevated the stress state, but no longer triggered seismicity following rapid coeruptive subsidence. These findings provide direct constraints on the primary controls on dynamic triggering and suggest that the response to dynamic stresses may help constrain the evolution of volcanic unrest.
Article
Geosciences, Multidisciplinary
A. Inbal, A. Ziv, I. Lior, R. N. Nof, A. S. Eisermann
Summary: Most aftershocks occur in areas with large co-seismic stress changes, but some occur long after the mainshock in remote regions with small stress changes. The triggering mechanism of these remote delayed aftershocks is not well understood. This study investigates the triggering mechanism of delayed aftershocks in the Dead Sea region following the 2023 Mw7.8 and Mw7.6 Kahramanmaras earthquakes.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Fangxue Zhang, Ruijia Wang, Yunfeng Chen, Yangkang Chen
Summary: This study utilized dense arrays to enhance understanding of injection-induced seismicity near HF wells, revealing high-resolution earthquake sequences and previously unmapped faults/fractures.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Chenyu Li, Zhigang Peng, Julien A. Chaput, Jacob Walter, Richard C. Aster
Summary: Recent studies have shown that remote large earthquakes can trigger microseismic activity around Mount Erebus, with most events occurring during the passage of shorter-period Rayleigh waves. The triggered events are likely shallow icequakes triggered by dilatational stress perturbations from teleseismic surface waves, with higher peak dynamic stress changes in teleseismic earthquakes being more capable of triggering icequakes at the site.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Naidan Yun, Hongfeng Yang, Shiyong Zhou
Summary: DynTriPy is a robust Python package that automatically detects dynamic triggering signals, aiming to better understand earthquake interaction mechanisms and assess seismic hazards. It efficiently implements an algorithm suitable for processing big data and suppressing noise and background seismic activity changes. By processing data from multiple stations in parallel, it enables global monitoring of earthquake triggering.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Uma Anuradha Madugula, Rajesh Rekapalli, K. Sudheer, P. Jagadeesh, H. V. S. Satyanarayana
Summary: Koyna, located near the West Coast of India, is a prime example of artificial water reservoir-induced seismicity. Monitoring and experiments have shown a correlation between the unloading of the reservoir and the triggered earthquakes in the Koyna area from 2015 to 2018. Deep drilling experiments have demonstrated a significant impact on seismic activity in the region.
Article
Geochemistry & Geophysics
Omid Khajehdehi, Jorn Davidsen
Summary: Fluid-induced earthquakes have negative impacts on industrial operations. Recent studies have found similarities between fluid-induced seismicity and tectonic seismicity, including event-event triggering or aftershocks. This study uses modeling to investigate the potential causes of these observations. The results show that the model successfully reproduces realistic aftershock behavior and statistical properties, unaffected by the fluid injection rate. The spatial distribution of fluid-induced events and their dependence on the permeability field also remain largely unchanged. However, detecting aftershocks and recovering their characteristics depend on the accessibility of the internal stress dynamics.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Tomoaki Nishikawa, Takuya Nishimura
Summary: Research has found that slow slip events (SSEs) at subduction zone plate boundaries can trigger earthquake swarms and megathrust earthquakes. The current statistical models do not explicitly consider the seismicity-triggering effect of SSEs, resulting in failed earthquake predictions. In this study, a new statistical model named the SSE-modulated ETAS model was constructed by incorporating SSE moment rates into the original ETAS model. Application of this new model to SSEs and M 2.5 or greater earthquakes in the Hikurangi Trench, New Zealand showed significant improvement compared to the original model.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Thermodynamics
Haidong Liu, Wei Liu, Peigang Yan, Deqi Chen, Kejian Dong, Jiang Qin, Hanzhou Liu
Summary: This article reveals the physical mechanism of critical heat flux (CHF) triggering in subcooled flow boiling through photographic observations. The study proposes the role mechanism for CHF triggering and presents a new correlation for predicting critical heat flux temperature.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Geosciences, Multidisciplinary
Kamran Karimi, Jorn Davidsen
Summary: Through the study of seismic catalogs, it was found that the dynamics of aftershocks differ when fluids are involved. Different scenarios all show significant aftershock behavior, highlighting the importance of event-event triggering processes. The size of aftershock zones increases with main shock magnitude, and the decay rate of aftershocks varies in different scenarios.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Tom Kettlety, James P. Verdon
Summary: The research found that the pore pressure increase caused by injection during hydraulic fracturing is generally considered to be the primary driver of induced seismicity, while in very tight reservoir rocks, unless a fracture network exists to act as a hydraulic conduit, the rate of diffusion may be too low to explain some microseismic sequences spatio-temporal evolution. Additionally, the study revealed that the fault triggering mechanisms during the PNR-1z and PNR-2 operations were different, with each operation activating faults with different orientations.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
Sungho Lee, Jeong-Ung Woo, Junkee Rhie
Summary: The 2017 M-w 5.5 Pohang earthquake near an enhanced geothermal system site generated numerous aftershocks, including a M-w 4.6 earthquake occurring 87 days later. This study utilized poroelastic modeling to evaluate the contribution of pore pressure variations on the spatiotemporal distribution of aftershocks. The results highlight the importance of pore pressure in triggering and influencing the decay of aftershocks.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Energy & Fuels
Alexander Y. Rozhko
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2016)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko, Andreas Bauer
GEOPHYSICAL PROSPECTING
(2019)
Editorial Material
Geochemistry & Geophysics
Alexander Y. Rozhko
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2012)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2008)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko
GEOPHYSICAL PROSPECTING
(2019)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko
GEOPHYSICAL PROSPECTING
(2020)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2020)
Article
Geochemistry & Geophysics
Alexander Y. Rozhko
Summary: Researchers argue that low-frequency shadows are not simply attenuation phenomena, but rather the result of energy being added or amplified by certain physical or numerical processes. The hysteresis of liquid bridges inside cracks leads to nonlinear energy exchange between frequencies, explaining the boost in wave energy at lower frequencies.
Article
Energy & Fuels
Alexander Y. Rozhko, Serhii Lozovyi, Marcel Naumann, Fredrik Hansteen, Matteo Ravasi
Summary: This study presents a model that describes how low-frequency vibrations can induce changes in relative permeabilities in dual-porosity dual-permeability rocks. The model considers the effects of wave-induced two-phase fluid flow and contact angle hysteresis. The research demonstrates that pulse-like vibrations are more effective in altering relative permeabilities than sinusoidal-shaped vibrations, and vibrations with different polarities can have opposite effects on relative permeabilities.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
A. Y. Rozhko, Y. Y. Podladchikov, F. Renard
GEOPHYSICAL RESEARCH LETTERS
(2007)