Results 31 to 40 of about 2,082 (203)
A global view of Pc3 wave activity in near-Earth space: Results from hybrid-Vlasov simulations
Frontiers in Astronomy and Space Sciences, 2022 Ultra-low frequency (ULF) waves in the Pc3 range, with periods between 10–45 s, are routinely observed in Earth’s dayside magnetosphere. They are thought to originate in the foreshock, which extends upstream of the quasi-parallel bow shock and is ...
Lucile Turc +18 more
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Cluster-based foreshock discrimination model with flexible time horizon and mainshock magnitudes
Progress in Earth and Planetary Science, 2023 Foreshock detection before mainshock occurrence is an important challenge limiting the short-term forecasts of large earthquakes. Various models for predicting mainshocks based on discrimination of foreshocks activity have been proposed, but many of them
Shunichi Nomura, Yosihiko Ogata
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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
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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
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Characterization of Foreshock Plasma Populations at Mercury
, 2023 Observations of foreshock plasma populations at Mercury are presented utilizing measurements from the Fast Imaging Plasma Spectrometer aboard the Mercury Surface, Space Environment, Geochemistry, and Ranging spacecraft.
Xianzhe Jia +11 more
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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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Upper crust anisotropy of the 2020 Jiashi MS 6.4 earthquake
Frontiers in Earth Science, 2023 The 2020 Jiashi MS 6.4 earthquake occurred north of the 1997–1998 Jiashi earthquake swarm. Because of its complex tectonic environment and frequent strong earthquake occurrence, scholars have paid extensive attention to this area.
Jin Li +4 more
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Properties and formation mechanisms of foreshock transients [PDF]
, 2022 Dissertation (Ph.D.) University of Alaska Fairbanks, 2022Interactions between bow shock-reflected (foreshock) ions with solar wind particles can lead to the formation of foreshock transients, frequently observed upstream of the bow shock.
Vu, Andrew
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