Results 81 to 90 of about 6,894 (231)

Cessation of Nearby Low‐Frequency Earthquake Activity Following the December 2024 Mw 7.0 Mendocino Earthquake: The Likely Role of Pore Pressure Reductions

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Earthquakes affect surrounding fault systems through multiple mechanisms. Here, we examine a rare cessation of activity in 27 families of low‐frequency earthquakes (LFEs) that likely reflect fault creep at the southern edge of Cascadia subduction, near the Mendocino triple junction.
David R. Shelly, Kathryn Z. Materna
wiley   +1 more source

Foreshock Cavities: Direct Transmission Through the Bow Shock

Journal of Geophysical Research - Space Physics, 2021
Global hybrid code simulations predict enhanced densities and magnetic field strengths not only in foreshock compressional boundaries on the flanks of the steady‐state dayside foreshock under near‐radial IMF conditions but also on the edges of the ...
D. Sibeck, S. Lee, N. Omidi, V. Angelopoulos   +3 more
semanticscholar   +1 more source

Automatic GNSS Coordinate Time Series Analysis for Very Large Networks

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract We present a new algorithm, AutoCF, for automatically constructing coordinate functions (CFs) for continuously operating GNSS reference stations (CORSs). The iterative algorithm alternates between application of LASSO and Ridge Regression methods, with hyperparameters successively tightened with each iteration to more judiciously scrutinize ...
Richard A. Bennett, Phillip K. McFarland, Amy Whetter, Jordan Krcmaric   +3 more
wiley   +1 more source

Ionospheric Scintillation Induced by Hot Flow Anomalies via Particle Precipitation

AGU Advances, Volume 7, Issue 7, October 2026.
Abstract Ionospheric scintillation disrupts trans‐ionospheric radio signals and represents significant challenges for critical communication and navigation systems. Here we document that hot flow anomalies (HFAs), transient disturbances formed near Earth's bow shock, can contribute to scintillation near the cusp.
Jia‐Chen Zhao, Qing‐He Zhang, Zhong‐Wei Yang, Duan Zhang, Kjellmar Oksavik, Bo‐Yi Wang, Yu‐Zhang Ma, Zan‐Yang Xing, Yong Wang, Ling‐Xin Zhao, Xiang‐Yu Wang, Jin Guo, Shi‐Mou Wang, Cai‐Jun Yan, Bian‐Long Zhao, Hong‐Kai Zhang, Chang‐Yue Zhao   +16 more
wiley   +1 more source

Unusual Martian Foreshock Waves Triggered by a Solar Wind Stream Interaction Region

The Astrophysical Journal Letters, 2023
Planetary bow shocks noncollisionally dissipate the incident bulk flow energy of solar wind into some other forms. To what extent and how solar wind disturbances affect the energy dissipation processes at the bow shocks on different planets remain ...
Zhenpeng Su, Yuming Wang, Tielong Zhang, Zhiyong Wu, Long Cheng, Zhuxuan Zou, Chenglong Shen, Jingnan Guo, Sudong Xiao, Guoqiang Wang, Zonghao Pan, Kai Liu, Xinjun Hao, Yiren Li, Manming Chen, Yutian Chi, Mengjiao Xu   +16 more
doaj   +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

Statistical Mapping of ULF Wave Power in the Vicinity of Earth's Bow Shock Using Cluster Magnetic Field Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Ultra‐low frequency (ULF) waves with frequencies 10–140 s are a characteristic feature of the foreshock, playing important roles in transient formation, shock reformation, and particle acceleration. We utilize 23 years of Cluster data to map ULF wave power and compressibility in the vicinity of Earth's bow shock, combining Cluster data with ...
R. L. Atkinson, H. Hietala, T. Karlsson, D. Manzini, D. Burgess   +4 more
wiley   +1 more source

Saturn's ULF wave foreshock boundary: Cassini observations [PDF]

, 2013
Even though the solar wind is highly supersonic, intense ultra-low frequency (ULF) wave activity has been detected in regions just upstream of the bow shocks of magnetized planets.
Bertucci, Cesar, Dougherty, M., Mazelle, C., Andrés, Nahuel, Gomez, Daniel Osvaldo   +4 more
core   +1 more source

Ion distributions upstream and downstream of the Earth's bow shock: first results from Vlasiator [PDF]

Annales Geophysicae, 2013
A novel hybrid-Vlasov code, Vlasiator, is developed for global simulations of magnetospheric plasma kinetics. The code is applied to model the collisionless bow shock on scales of the Earth's magnetosphere in two spatial dimensions and three ...
D. Pokhotelov, D. Pokhotelov, S. von Alfthan, Y. Kempf, Y. Kempf, R. Vainio, H. E. J. Koskinen, H. E. J. Koskinen, M. Palmroth   +8 more
doaj   +1 more source

Microscopic, Multipoint Characterization of Foreshock Bubbles With Magnetospheric Multiscale (MMS)

Journal of Geophysical Research: Space Physics, 2020
This work presents the first detailed analysis of foreshock bubbles (FBs) using high‐resolution Magnetospheric Multiscale (MMS) data. Between October 2017 and January 2019, MMS captured 10 foreshock transient events with burst resolution data that we ...
D. Turner, T. Liu, L. Wilson, Ian J. Cohen, D. Gershman, J. Fennell, J. Blake, B. Mauk, N. Omidi, J. Burch   +9 more
semanticscholar   +1 more source