Results 41 to 50 of about 6,894 (231)
Strain rate and temperature dependence of Omori law scaling constants of AE data: Implications for earthquake foreshock-aftershock sequences [PDF]
, 2004 Little is known about the temperature and strain rate dependence of acoustic emission AE activity (AE). Hence, we carried out a preliminary series of flow-through triaxial compression tests on porous sandstones at different temperatures and strain rates.
Ira O. Ojala +3 more
core +1 more source
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020 The paper presents the first results of integrated research of the strong seismic event (Uglovoye Podnyatiye earthquake (UPE) with a magnitude of Mw=7.3) that occurred on December 20, 2018 in the junction zone between the Kuril-Kamchatka and Aleutian ...
Чебров Д.В. +9 more
doaj +1 more source
Ultra‐low Frequency Foreshock Waves and Ion Dynamics at Mars
Journal of Geophysical Research - Space Physics, 2022 We study the solar wind interaction with Mars in a global three‐dimensional hybrid model. A well‐developed, vast ion foreshock forms under a strongly flow‐aligned interplanetary magnetic field (IMF) configuration but otherwise nominal solar wind and ...
R. Jarvinen, E. Kallio, T. Pulkkinen
semanticscholar +1 more source
Journal of Geophysical Research - Space Physics, 2022 Foreshock transients can result in significant dynamic pressure perturbations downstream, causing the magnetopause to move locally outward and inward. These near‐magnetopause phenomena in turn generate magnetospheric field‐aligned currents (FACs).
T. Liu +6 more
semanticscholar +1 more source
Magnetopause Reconnection and Indents Induced by Foreshock Turbulence [PDF]
Geophysical Research Letters, 2021 Based on global hybrid simulation results, we predict that foreshock turbulence can reach the magnetopause and lead to reconnection as well as Earth‐sized indents. Both the interplanetary magnetic field (IMF) and solar wind are constant in our simulation,
Li-Jen Chen +3 more
semanticscholar +1 more source
Eastern Approaches: Interball in the International Solar‐Terrestrial Program
Perspectives of Earth and Space Scientists, 2022 Progress in space plasma physics, or Heliophysics, necessarily requires the combined efforts of scientists in many nations employing observations from many spacecraft and ground‐based observatories.
D. G. Sibeck
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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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Foreshock Activity Promoted by Locally Elevated Loading Rate on a 4‐m‐Long Laboratory Fault
Journal of Geophysical Research - Solid Earth, 2022 We report laboratory experimental results to reveal the factors that control the occurrence and magnitude of foreshocks. We conducted rock friction experiments using an apparatus that can shear 4‐m‐long rock specimens. We observed many stick‐slip events,
F. Yamashita, E. Fukuyama, S. Xu
semanticscholar +1 more source
Observational Evidence of Magnetic Reconnection in the Terrestrial Foreshock Region [PDF]
Astrophysical Journal, 2021 Electron heating/acceleration in the foreshock, by which electrons may be energized beyond thermal energies prior to encountering the bow shock, is very important for the bow shock dynamics.
K. Jiang +12 more
semanticscholar +1 more source
Characteristics of the foreshock occurrence for Mj3.0 to 7.2 shallow onshore earthquakes in Japan
Earth, Planets and Space, 2022 We use the Japan Meteorological Agency (JMA) earthquake catalogue from January, 2001 to February, 2021 to investigate the spatiotemporal foreshock occurrence for shallow (within 30 km depth) onshore earthquakes (M j 3.0 to 7.2).
H. Peng, James J. Mori
semanticscholar +1 more source