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关于2021年5月滇西漾濞MS6.4地震序列特征及成因的初步研究
Dizhen xuebao, 2021 2021年5月21日21时48分在滇西苍山西麓漾濞地区发生MS6.4 （MW6.1）强震，相关地震活动表现为一个典型的前震−主震−余震序列。本研究分别就该地震序列的构造背景、M1.0以上地震的双差定位、主要地震的矩张量反演和破裂传播方向、应力场反演及断层滑动趋势以及潮汐作用等方面进行了初步分析。矩张量反演结果表明，矩心深度为6.0 km。根据断层破裂传播方向分析结果及精定位余震分布判定，主震震源断层产状为走向137°，倾角75°，滑动角−167°，破裂沿南东向单侧扩展，右旋走滑含正断层分量 ...
Xinglin Lei +3 more
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Connection Between Foreshock Structures and the Generation of Magnetosheath Jets: Vlasiator Results
Geophysical Research Letters, 2021 Earth’s magnetosheath consists of shocked solar wind plasma that has been compressed and slowed down at the Earth’s bow shock. Magnetosheath jets are pulses of enhanced dynamic pressure in the magnetosheath. Jets have been observed by numerous spacecraft
J. Suni +15 more
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Extension of Gutenberg-Richter Distribution to Mw -1.3, No Lower Limit in Sight [PDF]
, 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
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Impact of Foreshock Transients on the Flank Magnetopause and Magnetosphere and the Ionosphere
Frontiers in Astronomy and Space Sciences, 2021 Mesoscale (on the scales of a few minutes and a few RE) magnetosheath and magnetopause perturbations driven by foreshock transients have been observed in the flank magnetotail.
Chih-Ping Wang +3 more
doaj +1 more source
Local bow shock environment during magnetosheath jet formation: results from a hybrid-Vlasov simulation [PDF]
Annales Geophysicae, 2023 Magnetosheath jets are plasma structures that are characterised by enhanced dynamic pressure and/or plasma velocity. In this study, we investigate the formation of magnetosheath jets in four two-dimensional simulation runs of the global magnetospheric ...
J. Suni +14 more
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Stabilisation of BGK modes by relativistic effects [PDF]
, 2006 Context. We examine plasma thermalisation processes in the foreshock region of astrophysical shocks within a fully kinetic and self-consistent treatment.
Coventry Cv Al +4 more
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Interplanetary shocks and foreshocks
, 2023 The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Blanco-Cano, X. +8 more
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Comparing foreshock characteristics and foreshock forecasting in observed and simulated earthquake catalogs [PDF]
Journal of Geophysical Research: Solid Earth, 2014 AbstractIn this paper, we compare the empirical results regarding foreshocks obtained from the Japan data with results for synthetic catalogs in order to clarify whether or not the corresponding results are consistent with the description of the seismicity by a superposition of background activity and epidemic‐type aftershock sequence (ETAS) models ...
Yosihiko Ogata, Koichi Katsura
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Journal of Geophysical Research: Solid EarthAbstractForeshocks are spatially clustered seismic events preceding large earthquakes. Since the dawn of seismology, their occurrence has been identified as a possible mechanism leading to further crustal destabilization, hence, to major failures. However, several cases occurred without any previous anomalous seismic activity, so that the hypothesis of
Davide Zaccagnino +4 more
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Magnetic fields and cosmic rays in GRBs. A self-similar collisionless foreshock
, 2008 Cosmic rays accelerated by a shock form a streaming distribution of outgoing particles in the foreshock region. If the ambient fields are negligible compared to the shock and cosmic ray energetics, a stronger magnetic field can be generated in the shock ...
Diamond +21 more
core +1 more source