Results 71 to 80 of about 5,647 (190)

Oxygen foreshock of Mars

Planetary and Space Science, 2015
AbstractMars Express (MEX) has operated for more than 10 years in the environment of Mars, providing solar wind ion observations from the Analyzer of Space Plasmas and Energetic Atoms experiment's Ion Mass Analyser (IMA). On 21 September 2008, MEX/IMA detected foreshock-like discrete distributions of oxygen ions at around 1keV in the solar wind ...
Yamauchi, M., Lundin, R., Frahm, R.A., Sauvaud, J.-A., Holmström, M., Barabash, S.   +5 more
openaire   +1 more source

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

The East Aegean Sea strong earthquake sequence of October–November 2005: lessons learned for earthquake prediction from foreshocks [PDF]

Natural Hazards and Earth System Sciences, 2006
The seismic sequence of October–November 2005 in the Samos area, East Aegean Sea, was studied with the aim to show how it is possible to establish criteria for (a) the rapid recognition of both the ongoing foreshock activity and the mainshock, and (
G. A. Papadopoulos, I. Latoussakis, E. Daskalaki, G. Diakogianni, A. Fokaefs, M. Kolligri, K. Liadopoulou, K. Orfanogiannaki, A. Pirentis   +8 more
doaj  

Nonlinear Waves in the Terrestrial Quasiparallel Foreshock [PDF]

Physical Review Letters, 2016
We study the applicability of the derivative nonlinear Schr dinger (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 ...
Hnat, B., Kolotkov, D. Y., O'Connell, D., Nakariakov, V. M., Rowlands, G.   +4 more
openaire   +3 more sources

Advancing Probabilistic Seismic Hazard Assessment for Northeastern Brazil: Toward a Comprehensive Treatment of Epistemic Uncertainties

Earthquake Spectra, Volume 42, Issue 1, February 2026.
This study presents an updated probabilistic seismic hazard analysis model for Northeastern Brazil, a stable continental region, taking into account more comprehensive epistemic uncertainties compared to previous studies, which is critical for robust decision making related to earthquake risk management.
Eduardo Marques Vieira Pereira, Marcelo Sousa de Assumpção, Katsuichiro Goda, Gustavo Henrique Siqueira   +3 more
wiley   +1 more source

Active current sheets and hot flow anomalies in Mercury's bow shock [PDF]

, 2013
Hot flow anomalies (HFAs) represent a subset of solar wind discontinuities interacting with collisionless bow shocks. They are typically formed when the normal component of motional (convective) electric field points toward the embedded current sheet on ...
Anderson, B. J., Boardsen, S. A., Collinson, G., Gershman, D. J., Khazanov, G. V., Korth, H., Raines, J. M., Sibeck, D., Slavin, J. A., Sundberg, T., Uritsky, V. M.   +10 more
core   +1 more source

Testing Audio Compression Autoencoders for Seismology: Moving Toward Foundation Models

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Efforts to develop foundation models (FMs) for seismic waveform analysis are beginning to advance with progress still needed for geophysics applications. FMs learn a generalized representation of the data using a self‐supervised approach, thus allowing several downstream tasks to be performed in a unified framework.
Laura Laurenti, Christopher W. Johnson, Daniele Trappolini, Elisa Tinti, Fabio Galasso, Chris Marone   +5 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

Forecasting the Rate of Induced Seismicity as a Neural Temporal Point Process

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Forecasting is an essential part of risk mitigation, where the mitigation efficacy depends strongly on the quality of forecasts. We explore the neural temporal point process as a deep learning framework to forecast induced earthquakes. We train our deep learning model using numerous enhanced geothermal systems and hydraulic fracturing test ...
Ryan Schultz, Stefan Wiemer
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