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Advances in Space Research, 1995
Plasma waves observed in the VLF range upstream of planetary bow shocks not only modify the particle distributions, but also provide important information about the acceleration processes that occur at the bow shock. Electron plasma oscillations observed near the tangent field line in the electron foreshock are generated by electrons reflected at the ...
E.W Greenstadt, G Le, R.J Strangeway
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Plasma waves observed in the VLF range upstream of planetary bow shocks not only modify the particle distributions, but also provide important information about the acceleration processes that occur at the bow shock. Electron plasma oscillations observed near the tangent field line in the electron foreshock are generated by electrons reflected at the ...
E.W Greenstadt, G Le, R.J Strangeway
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Finding foreshocks in the damage zone
Science, 2017Geophysics![Figure][1] Damage done by a 2005 earthquake in Balakot, Pakistan PHOTO: AGENCJA FOTOGRAFICZNA CARO/ALAMY STOCK PHOTO Foreshocks are small earthquakes that precede much larger and more damaging earthquakes.
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Foreshocks and earthquake prediction
Tectonophysics, 1972Abstract If a group of foreshocks can be distinguished from ordinary seismic activities, it would contribute to earthquake prediction. In the case of two Japanese earthquakes, which were preceded by immediate foreshocks, the coefficient “b” in the magnitude versus frequency equation was significantly smaller than that of the aftershocks or of the ...
Shigeji Suyehiro, Hiroshi Sekiya
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Solar wind deceleration in the foreshock as the source of the foreshock compressive structures
The foreshock is a turbulent region located upstream of the quasi parallel bow shock. It is dominated by waves and reflected back-streaming particles that interact with each other and result in the creation of different foreshock phenomena. Xirogiannopoulou et al.Niki Xirogiannopoulou +3 more
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Two Foreshock Sequences Post Gulia and Wiemer (2019)
, 2020Recognizing earthquakes as foreshocks in real time would provide a valuable forecasting capability. In a recent study, Gulia and Wiemer (2019) proposed a traffic-light system that relies on abrupt changes in b-values relative to background values.
K. Dascher-Cousineau, T. Lay, E. Brodsky
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Foreshocks and earthquake prediction
Tectonophysics, 1975Abstract Results of a statistical investigation of the magnitude and time distributions of foreshocks in the area of Greece are reported. Further evidence is presented that the parameter b , in the frequency—magnitude relation, has a smaller value before than after the main shock, and that the time distribution of foreshocks follows a statistical ...
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Foreshock Transients and Their Geoeffects
2020<p>Foreshock transients are frequently observed upstream from the bow shock (such as Hot Flow&#160;Anomalies, foreshock cavities, and foreshock bubbles). They play a significant role in the mass, energy&#160;and momentum transport from the solar wind into the magnetosphere and impact the whole&#160 ...
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Formation of cavities in the foreshock
AIP Conference Proceedings, 2007Results from electromagnetic hybrid simulations (kinetic ions, fluid electrons) of the magnetosphere during radial IMF are discussed with focus on the structure of the ion foreshock and the associated ULF waves. In particular, we show that this region is populated with numerous structures that are associated with large (∼50%) drops in solar wind ...
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