Results 71 to 80 of about 2,082 (203)

Ultra-low Frequency Foreshock Waves and Ion Dynamics at Mars

, 2022
We study the solar wind interaction with Mars in a global three-dimensional hybrid model. A well-developed, vast ion foreshock forms under a strongly flow-aligned interplanetary magnetic field (IMF) configuration but otherwise nominal solar wind and ...
R. Jarvinen, T. I. Pulkkinen, Pulkkinen, T. I., Pulkkinen, Tuija, Kallio, E., Kallio, Esa, E. Kallio, Jarvinen, R., Järvinen, Riku   +8 more
core   +1 more source

Seismic Precursors to the Blatten, Switzerland Landslide Revealed by Unsupervised Machine Learning

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The transition from stable to unstable states in geological systems, such as landslides and fault zones, remains poorly understood. Seismic precursors and foreshocks related to the transition, if present, are often difficult to observe, and their interpretation remains challenging.
Reza Esfahani, Michel Campillo, Léonard Seydoux, Kiwamu Nishida, Guillaume Favre‐Bulle   +4 more
wiley   +1 more source

Simultaneous observations of MHD hot flow anomaly and kinetic foreshock bubble and their impacts

Frontiers in Physics
Hot flow anomalies (HFAs) and foreshock bubbles (FBs) are two types of transient phenomena characterized by flow deflected and hot cores bounded by one or two compressional boundaries in the foreshock.
Xi Lu, Xi Lu, Terry Liu, Xingran Chen, Antonius Otto, Hui Zhang   +5 more
doaj   +1 more source

Dynamic Coupling Between Faulting, Rifting and Magmatism During 2021‐2025 Unrest on Reykjanes Peninsula, Iceland

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Interactions among faulting, earthquakes, and eruptions are fundamental to plate tectonics and hazard forecasting yet rarely observed along mid‐ocean ridges. On Iceland's Reykjanes Peninsula, seismotectonic–volcanic unrest resumed after nearly 800‐year hiatus, providing an opportunity to observe these interactions during 2021–2025 activity. By
Tomáš J. Fischer, Pavla Hrubcová, Josef Vlček, Gregory P. De Pascale, Thorvaldur Thordarson, Halldór Geirsson, Anthony Lomax, Robert Skoumal   +7 more
wiley   +1 more source

Nonlinear Waves in the Terrestrial Quasiparallel Foreshock [PDF]

Physical Review Letters, 2016
We study the applicability of the derivative nonlinear Schrödinger (DNLS) equation, for the evolution of high frequency nonlinear waves, observed at the foreshock region of the terrestrial quasi-parallel bow shock. The use of a pseudo-potential is elucidated and, in particular, the importance of canonical representation in the correct interpretation of
Hnat, B., Kolotkov, D. Y., O'Connell, D., Nakariakov, V. M., Rowlands, G.   +4 more
openaire   +3 more sources

Interseismic, Coseismic, and Early Postseismic Slip Associated With the 2025 Mw 8.8 Kamchatka Earthquake

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Unraveling the surface deformation and fault kinematics during the seismic cycle is crucial for understanding earthquake physics. Herein, we use geodetic and seismic observations to quantify the interseismic coupling, coseismic rupture, and postseismic afterslip associated with the 2025 Mw 8.8 Kamchatka earthquake.
Yang Xiao, Jingqi Wang, Yijun Zhang, Wenting Zhang, Jiangcun Zhou, Heping Sun, Yabo Zhao, Anas Osman, Rumeng Guo   +8 more
wiley   +1 more source

Physical mechanisms of earthquake nucleation and foreshocks: Cascade triggering, aseismic slip, or fluid flows?

Earthquake Research Advances
Earthquakes are caused by the rapid slip along seismogenic faults. Whether large or small, there is inevitably a certain nucleation process involved before the dynamic rupture.
Zhigang Peng, Xinglin Lei
doaj   +1 more source

Statistical behavior of foreshock Langmuir waves observed by the Cluster wideband data plasma wave receiver [PDF]

Annales Geophysicae, 2004
We present the statistics of Langmuir wave amplitudes in the Earth's foreshock using Cluster Wideband Data (WBD) Plasma Wave Receiver electric field waveforms from spacecraft 2, 3 and 4 on 26 March 2002.
K. Sigsbee, C. A. Kletzing, D. A. Gurnett, J. S. Pickett, A. Balogh, E. Lucek   +5 more
doaj   +1 more source

Large‐Scale Magnetosheath Jets Formed by Shock‐Discontinuity Interactions: A Three‐Dimensional Global Hybrid Simulation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Magnetosheath high‐speed jets with enhanced dynamic pressure are common in Earth's magnetosheath and can impinge on the magnetopause, driving pronounced boundary deformation. Recent observations indicate that shock–discontinuity interactions (SDIs) can generate magnetosheath jets, but the formation mechanism is still unclear.
Jin Guo, San Lu, Quanming Lu, Yufei Zhou, Boyi Wang, Tianran Sun, Yihong Guo, Zhongwei Yang, Shimou Wang, Junyi Ren, Jiuqi Ma, Chao Shen, Xinliang Gao, Rongsheng Wang   +13 more
wiley   +1 more source

Large Earthquakes Along the Mendocino Oceanic Transform Fault Hardly Have Any Foreshocks

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Compared to continental strike‐slip faults, oceanic transform faults (OTFs) are thought to mainly slip aseismically and host significantly more foreshocks triggered by precursory aseismic slip which enhance the mainshocks' short‐term predictability. However, long‐term high‐resolution observational constraints remain limited.
Hui Liu, Min Liu, Yen Joe Tan
wiley   +1 more source