Results 41 to 50 of about 1,496 (195)

The Role of Disorder in Foreshock Activity

Geosciences
Foreshocks, observed before some large earthquakes, remain debated in terms of their origins and predictive value. While aftershocks fit well within bottom-up triggering models like ETAS, foreshocks may arise from distinct preparatory processes ...
Giuseppe Petrillo
doaj   +1 more source

Substorm Effects on Chorus Emissions Modulated by ULF Waves

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Although cross‐scale wave‐particle interactions play a critical role in energy transfer in the magnetosphere, the influence of geomagnetic activity on the physical mechanisms involved remains unclear. In this study, we investigate this question by analyzing Van Allen Probes‐A observations of an event occurring on 25 July 2016.
Xing‐Yu Li, Qiu‐Gang Zong, Shan Wang, Xu‐Zhi Zhou, Chao Yue, Robert Rankin, Li Li, Yong‐Fu Wang, Yi‐Xin Sun, Hua‐Yun Shen, Bin He, Yong Wu   +11 more
wiley   +1 more source

Prediction probabilities from foreshocks [PDF]

, 1991
When any earthquake occurs, the possibility that it might be a foreshock increases the probability that a larger earthquake will occur nearby within the next few days.
Jones, Lucile M., Agnew, Duncan Carr
core  

Transmission of an ICME Sheath Into the Earth’s Magnetosheath and the Occurrence of Traveling Foreshocks [PDF]

, 2021
The transmission of a sheath region driven by an interplanetary coronal mass ejection into the Earth’s magnetosheath is studied by investigating in situ magnetic field measurements upstream and downstream of the bow shock during an ICME sheath passage on
Simon W. Good, Yordanova, Emiliya,, Turc, Lucile,, Lucile Turc, Turc, Lucile, Good, Simon W., Pulkkinen, Tuija I.,, Good, Simon W.,, Ala-Lahti, Matti, Dimmock, Andrew P., Yordanova, Emilya, University, Aalto, Dimmock, Andrew P.,, Kilpua, Emilia K. J.,, Andrew P. Dimmock, Emilya Yordanova, Ala-Lahti, Matti,, Pulkkinen, Tuija I., Kilpua, Emilia K. J., Matti Ala‐Lahti, Kilpua, Emilia K.J., Tuija I. Pulkkinen, Emilia K. J. Kilpua   +22 more
core   +1 more source

Nucleation and Cascade Features of Earthquake Mainshock Statistically Explored from Foreshock Seismicity

Entropy, 2019
The relation between the size of an earthquake mainshock preparation zone and the magnitude of the forthcoming mainshock is different between nucleation and domino-like cascade models.
Masashi Kamogawa, Kazuyoshi Z. Nanjo, Jun Izutsu, Yoshiaki Orihara, Toshiyasu Nagao, Seiya Uyeda   +5 more
doaj   +1 more source

Synchronization and desynchronization in the Olami-Feder-Christensen earthquake model and potential implications for real seismicity [PDF]

Nonlinear Processes in Geophysics, 2011
The Olami-Feder-Christensen model is probably the most studied model in the context of self-organized criticality and reproduces several statistical properties of real earthquakes.
S. Hergarten, R. Krenn
doaj   +1 more source

The 2025 Kamchatka Earthquake and Tsunami: Cascading Impacts and Risks to Japan

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 11, Page 2837-2854, September 2026.
ABSTRACT On July 29th, 2025, a large earthquake (Mw 8.8) occurred near the Kamchatka Peninsula. This event caused a tsunami that reached Japan's Pacific coast, even though the source was far away. In this study, we analyze the characteristics of earthquakes and tsunamis and discuss how they relate to the recurrence possibility and risk in Japan.
Ampan Laosunthara, An‐Chi Cheng, Yo Fukushima, Yoshinori Shigihara, Natt Leelawat, Anawat Suppasri, Fumihiko Imamura   +6 more
wiley   +1 more source

Characteristics of foreshock activity inferred from the JMA earthquake catalog

Earth, Planets and Space, 2018
We investigated the foreshock activity characteristics using the Japan Meteorological Agency Unified Earthquake Catalog for the last 20 years. Using the nearest-neighbor distance approach, we systematically and objectively classified the earthquakes into
Koji Tamaribuchi, Yuji Yagi, Bogdan Enescu, Shiro Hirano   +3 more
doaj   +1 more source

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 11, Page 2855-2879, September 2026.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

Spatially Consistent Small‐Scale Stress Heterogeneity Revealed by the 2008 Mogul, Nevada, Earthquakes

The Seismic Record, 2023
We compute and analyze stress drops for 4175 earthquakes (M_L 0–5) in the 2008 Mogul, Nevada, swarm–mainshock sequence using a spectral decomposition approach that uses depth‐dependent path corrections.
Christine J. Ruhl, Rachel E. Abercrombie, Peter M. Shearer   +2 more
doaj   +1 more source