Results 41 to 50 of about 5,765 (201)

Structural heterogeneity in the megathrust zone and mechanism of the 2011 Tohoku-oki earthquake (Mw 9.0) [PDF]

open access: yes, 2011
The great 2011 Tohoku-oki earthquake (Mw 9.0) and its 339 foreshocks and 5,609 aftershocks (9–27 March 2011) were relocated using a three-dimensional seismic velocity model and local P and S wave arrival times.
Hasegawa, Akira   +4 more
core   +1 more source

Extension of Gutenberg-Richter Distribution to Mw -1.3, No Lower Limit in Sight [PDF]

open access: yes, 2009
With twelve years of seismic data from TauTona Gold Mine, South Africa, we show that mining-induced earthquakes follow the Gutenberg-Richter relation with no scale break down to the completeness level of the catalog, at moment magnitude MW −1.3.
Boettcher, Margaret S   +2 more
core   +3 more sources

Planetary foreshock radio emissions [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2005
The electron foreshock regions upstream of Earth's bow shock and upstream of traveling interplanetary shocks are known to be propitious sites for a variety of energetic particle and plasma wave phenomena, including radio emissions. A quantitative theoretical model has been developed for radio emissions associated with the terrestrial foreshock and for ...
Zdenka Kuncic, Iver H. Cairns
openaire   +1 more source

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

open access: yesThe 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   +16 more
doaj   +1 more source

Characteristics of Foreshock Subsolar Compressive Structures

open access: yesJournal of Geophysical Research: Space Physics, 2023
AbstractThe turbulent foreshock region upstream of the quasi‐parallel bow shock is dominated by waves and reflected particles that interact with each other and create a large number of different foreshock transients. The structures with the enhanced magnetic field, Short Large Amplitude Magnetic Structures, and density spikes named plasmoids are ...
Niki Xirogiannopoulou   +3 more
openaire   +1 more source

Oblique propagation and temperature effects on the resonant right-hand ion beam instability

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The resonant right-hand instability (RHI) is often the dominant mode driven by reflected ions upstream of Earth’s quasi-parallel bow shock. In the tradition of Peter Gary, this paper further explores the right-hand instability using numerical solutions ...
Ari Le   +4 more
doaj   +1 more source

Relativistic electrons generated at Earth's quasi-parallel bow shock. [PDF]

open access: yes, 2019
Plasma shocks are the primary means of accelerating electrons in planetary and astrophysical settings throughout the universe. Which category of shocks, quasi-perpendicular or quasi-parallel, accelerates electrons more efficiently is debated.
Angelopoulos, Vassilis   +2 more
core   +1 more source

Large Scale Earth's Bow Shock with Northern IMF as simulated by PIC code in parallel with MHD model

open access: yes, 2016
In this paper, we propose a 3D kinetic model (Particle-in-Cell PIC ) for the description of the large scale Earth's bow shock. The proposed version is stable and does not require huge or extensive computer resources.
Baraka, Suleiman M
core   +3 more sources

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

open access: yesGeophysical 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   +8 more
wiley   +1 more source

Seismogenic structure behaviour revealed by spatial clustering of seismicity in the Umbria-Marche Region (Central Italy)

open access: yesAnnals of Geophysics, 1998
Time variations in the spatial distribution of earthquake epicentres are analyzed by application of the fractal correlation dimension method. The zone under investigation is located in Central Italy, bounded in longitude by 12.0 and 14.4 degrees east and
P. Tosi
doaj   +1 more source

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